Entries |
Document | Title | Date |
20080278262 | ZIG-ZAG ARRAY RESONATORS FOR RELATIVELY HIGH-POWER HTS APPLICATIONS - A narrowband filter comprises an input terminal, an output terminal, and an array of basic resonator structures coupled between the terminals to form a single resonator having a resonant frequency. The resonator array may be arranged in a plurality of columns of basic resonator structures, with each column of basic resonator structures having at least two basic resonator structures. The basic resonator structures in each column may be coupled between the terminals in parallel or in cascade. Two or more resonator arrays may be coupled to generate multi-resonator filter functions. | 11-13-2008 |
20080290967 | Offset footprint of a connector on a printed board - The present invention relates to a board receiving at least one connector, said board being constituted by a dielectric substrate comprising, on a first face, a first ground plane and on a second face, at least two transmission lines between which the connector and a footprint are mounted, characterized in that the footprint comprises a first element positioned between the two transmission lines under the connector, said first element forming with the first ground plane, a capacitive element and, at each extremity of the first element, second elements forming with the first element, a self-inductive and capacitive element, said second elements each extending by a second ground plane, the second ground planes being connected to the first ground plane. | 11-27-2008 |
20080303610 | TUNED FILTERS WITH ENHANCED HIGH FREQUENCY RESPONSE - A tuned filter having enhanced high frequency response includes a circuit board having first and second opposed major surfaces and first and second opposing sides. The opposed major surfaces are substantially parallel to a single plane and are bisected by a longitudinal axis. The first and second opposing sides are substantially parallel to the longitudinal axis. An input terminal and an output terminal are connected to the single circuit board. A filter section is associated with the first major surface. At least two ground paths are associated with the second major surface. One of the ground paths extends along a portion of the first side, and another one of the ground paths extends along a portion of the second opposing side. An isolation region separates the at least two ground paths, and extends along the longitudinal axis. | 12-11-2008 |
20090015350 | BAND-STOP FILTERS - Multiple tank elements disposed along a common axis and multiple conductive pads disposed along opposing sides of the tank elements define a serpentine transmission path. The tank elements, each having a capacitor and an inductor in parallel communication, define respective portions of the serpentine transmission path that cross the common axis. In a circuit element having multiple tank elements defining a transmission path in which each tank element is preceded or followed by a next neighbor tank element, inductors of next neighbor tank elements are structured to generate directionally opposing magnetic fields upon passage of electrical current progressing along the transmission path. | 01-15-2009 |
20090045889 | High-speed router with backplane using muli-diameter drilled thru-holes and vias - A high-speed router backplane is disclosed. The router backplane uses differential signal pairs on multiple signal layers, each sandwiched between a pair of digital ground layers. Thru-holes are used to connect the differential signal pairs to external components. To reduce routing complexity, at least some of the differential signal pairs route through a via pair, somewhere along their path, to a different signal layer. At least some of the thru-holes and vias are drilled to reduce an electrically conductive stub length portion of the hole. The drilled portion of a hole includes a transition from a first profile to a second profile to reduce radio frequency reflections from the end of the drilled hole. | 02-19-2009 |
20090079516 | FILTER - Disclosed is a filter comprising an unbalanced input terminal and two balanced output terminals (a first balanced output terminal and a second balanced output terminal. A capacitor is connected between the first balanced output terminal and the GND, another capacitor is connected between the second balanced output terminal and the GND, and a first coil is connected between the first balanced output terminal and the second balanced output terminal. | 03-26-2009 |
20090108958 | NOISE FILTER ARRAY - A noise filter array includes filter elements, each of which includes an LC parallel resonant circuit having a coil and a capacitor and an LC series resonant circuit having a coil and a capacitor, are arranged substantially parallel to one another in an array and integrally provided. Grounding capacitors that define the filter elements are arranged so that a common ground-side electrode faces signal-side electrodes and is connected to an inductance adjusting conductor that defines the LC series resonant circuits along with the capacitors through a via hole. The lengths of the inductance adjusting conductor from a connection location within the via hole to ground terminals are substantially equal in each of the filter elements. | 04-30-2009 |
20090160578 | Filter Design Methods and Filters Based on Metamaterial Structures - Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell. | 06-25-2009 |
20090167460 | SUPERCONDUCTING TUNABLE FILTER - A superconducting tunable filter is disclosed that has a center frequency and a bandwidth able to be adjusted separately. The superconducting tunable filter includes a superconducting resonator filter pattern formed on a dielectric substrate; a dielectric or magnetic plate above the resonator filter pattern and having a through-hole; a dielectric or magnetic rod inserted in the through-hole; and a position controller which separately controls the position of the dielectric or magnetic plate and the position of the dielectric or magnetic rod relative to the resonator filter pattern. | 07-02-2009 |
20090174502 | PRINTED BOARD AND FILTER USING THE SAME - A printed board is mounted with a chip-type solid electrolytic capacitor of a four-terminal structure where a pair of positive electrode terminals are disposed at opposite positions and a pair of negative electrode terminals are disposed at opposite positions on a mounting surface. The printed board has a pair of positive electrode patterns and a pair of negative electrode patterns to which the positive electrode terminals and negative electrode terminals of the chip-type solid electrolytic capacitor are connected, respectively. The printed board further has an inductor section that is insulated from the negative electrode patterns, and electrically connects the positive electrode patterns. | 07-09-2009 |
20090184781 | RESONATOR - A resonator that can alleviate restrictions in usage and design due to the bias voltage dependency and for which usage and design conditions can be easily determined. The resonator comprises a fixed electrode, a movable electrode opposite and sandwiching the fixed electrode, and an extension of the fixed electrode or the movable electrode that extends along a plane crossing the opposite surfaces of the fixed electrode and the movable electrode. With being displaced vertically relative to the fixed electrode, the movable electrode is vibrated. | 07-23-2009 |
20090256648 | DC and/or AF Output From an Rf Path - An improved DC and/or audio-frequency output for RF paths has the following features: an earth connection is provided, in particular in the form of an electrically conductive housing ( | 10-15-2009 |
20090267704 | CAPACITOR DEVICES WITH A FILTER STRUCTURE - A capacitor device is provided. The capacitor device includes at least one capacitor. The capacitor device also includes a first capacitor and a first filter coupling the first capacitor and a conductive region, wherein the first capacitor has a first resonance frequency and the first filter is configured to operate at a first frequency band covering the first resonance frequency. | 10-29-2009 |
20090267705 | TUNABLE MATCHING NETWORK CIRCUIT TOPOLOGY SELECTION - Tunable matching network topologies are disclosed. A network in accordance with the present invention comprises at least one inductor, and at least one tunable capacitor, in parallel with the inductor, wherein the at least one tunable capacitor tunes the at least one inductor self-resonant frequency. | 10-29-2009 |
20090284328 | Configuration Having an RF Component and a Method for Compensation of Linking Inductance - In a configuration with at least one RF component disposed in a signal path and including a ground connection to an external circuit environment, a coupling element is provided which electromagnetically couples to at least part of the ground connection and at the same time decouples a coupling current. By suitably feeding this coupling current back into the signal path of the component, the negative influence of the inductance of the ground connection on the signal path is thus compensated for. | 11-19-2009 |
20090289744 | ELECTRONICALLY TUNABLE, ABSORPTIVE, LOW-LOSS NOTCH FILTER - An electronically tuned, absorptive, low-loss notch filter with high RF power handling capability is obtained using a four-port quadrature hybrid coupler connected to a matched pair of band pass resonator devices and resistive terminations. The notch filter design uses series-only tuning elements for the band pass resonator devices to raise the RF power handling of the band pass resonators far above conventional techniques while also being tunable at high speeds. The notch filter architecture and method can be used for interference cancellation in a wide range of wireless technologies, such as cellular phone, wireless routers, hand-held radios, satellite communications, and any other environments where there are a number of wireless technologies in close signal proximity. | 11-26-2009 |
20090302972 | PACKAGING MATERIAL WITH ELECTROMAGNETIC COUPLING MODULE - A packaging material includes an electromagnetic coupling module for an RFID system, in which a radio IC chip is protected from external shock and environmental change without affecting the planarity of the packaging material, the assembly including an electromagnetic coupling module is facilitated, and the radiation characteristics are satisfactory. A packaging material includes a liner and a wave-shaped core material, wherein an electromagnetic coupling module is arranged inside of the packaging material. The electromagnetic coupling module includes a radio IC chip and a feeder circuit board, on which the radio IC chip is mounted, the feeder circuit board including a resonant circuit that includes an inductance element. The packaging material is made of a dielectric, wherein the dielectric and the electromagnetic coupling module are electromagnetically coupled to transmit/receive high frequency signals. | 12-10-2009 |
20100007436 | TWO-DIMENSIONAL LEFT-HANDED METAMATERIAL - The present invention provides a two-dimensional left-handed metamaterial that functions as a two-dimensional electromagnetic wave propagation medium in which the equivalent permittivity and permeability of the medium are both negative, exhibits superior low-loss, broadband characteristics as a left-handed material, and has a simple constitution, enabling low-cost manufacture. | 01-14-2010 |
20100007437 | LC COMPOSITE COMPONENT - An LC composite component capable of reducing an overall size while keeping a Q-value of a resonator at a high level and increasing coupling flexibility of resonators includes two capacitor electrodes and two input/output terminal electrodes extending therefrom provided on a first dielectric layer. A ground electrode and another capacitor electrode are provided on second and sixth dielectric layers, respectively. Two substantially linear line electrodes are provided on a third dielectric layer. Two substantially U-shaped line electrodes are provided on a fourth dielectric layer. Two substantially crank-shaped line electrodes are provided on a fifth dielectric layer. Six via electrodes arranged to connect ends of respective line electrodes are provided on the third, fourth, and fifth dielectric layers. These via electrodes and line electrodes constitute electrodes of a double helix structure. | 01-14-2010 |
20100026419 | FILTER, BRANCHING FILTER AND COMMUNICATION APPARATUS - A filter includes: a converter circuit, provided with a single-type common terminal and two balanced terminals, for performing conversion between a balanced line and an unbalanced line; two filter units coupled to each of the balanced terminals of the converter circuit and allowing passage of a signal in a pass band; and a bridging capacitor arranged to extend across the converter circuit and one of the filter units in a bridging manner, wherein the inductance of an opposite-side line of one of the filter units relative to the converter circuit is electromagnetically coupled to the inductance of a line coupling the other filter unit and the converter circuit. | 02-04-2010 |
20100052817 | Integrated Circuit Inductor with Transverse Interfaces - An integrated circuit (IC) inductor structure is provided with transverse electrical interfaces. The inductor structure is formed on at least one IC circuit layer and has a first axis planar to a circuit layer surface, bisecting the inductor into opposite first and second sides. An input interface is formed on the circuit layer and connected to the inductor first side, parallel to a second axis, which is perpendicular to the first axis. An output interface is formed on the circuit layer and connected to the inductor second side, parallel to the second axis. In one aspect, the inductor has a center tap electrical interface parallel to the axis. In another aspect, the inductor includes a three-dimensional (3D) loop formed over a plurality of the circuit layers. | 03-04-2010 |
20100060382 | METHOD AND DEVICE FOR OPTIMISING THE ADJUSTMENT TIME OF AN ADJUSTABLE FILTER - A device associated with the control of a tractable filter, including: an induction coil having an inductance Ls, and a resistance Rs; a series resistance r | 03-11-2010 |
20100109805 | FILTER DESIGN METHODS AND FILTERS BASED ON METAMATERIAL STRUCTURES - Filter design techniques and filters based on metamaterial structures including an extended composite left and right handed (E-CRLH) metamaterial unit cell. | 05-06-2010 |
20100134204 | HARMONIC FILTER - A Passive harmonic filter (F) has an input node (B) for connection to a power supply ( | 06-03-2010 |
20100134205 | TUNABLE MULTI FREQUENCY BANDS FILTER DEVICE - The present invention relates to a tunable filter device for providing a tunable band pass characteristics for the receive path of a multi-band front-end module. According to the invention is proposed, a distributed, wide-band amplifier with a low-frequency cut-off and a high-frequency cut-off in combination with a LCR network, of which wide-band amplifier the DC blocking capacitors define the low-frequency cut-off of the filter device, whilst the high-frequency cut-off is determined by the cut-off frequency of the artificial input and output transmission lines of the LCR network. In one embodiment, additional capacitors are coupled in parallel to the DC blocking capacitors of the LCR network, switchable by MOS transistors as switching elements. Accordingly, in a certain embodiment it is proposed to allow tuning of the low- and the high-frequency cut-off by programming with a digital control command. | 06-03-2010 |
20100156563 | WIRELESS IC DEVICE AND COMPONENT FOR WIRELESS IC DEVICE - A wireless IC device includes a wireless IC chip, a power supply circuit board upon which the wireless IC chip is mounted, and in which a power supply circuit is provided, the power supply circuit includes a resonant circuit having a predetermined resonant frequency, and a radiation pattern, which is adhered to the underside of the power supply circuit board, for radiating a transmission signal supplied from the power supply circuit, and for receiving a reception signal to supply this to the power supply circuit. The resonant circuit is an LC resonant circuit including an inductance device and capacitance devices. The power supply circuit board is a multilayer rigid board or a single-layer rigid board, and between the wireless IC chip and the radiation pattern is connected by DC connection, magnetic coupling, or capacitive coupling. | 06-24-2010 |
20100182099 | FILTER ADAPTED TO DSL LOOP CUSTOMER SERVICE END - A filter adapted to DSL loop customer service end includes filter circuit, transistor control circuit, and a capacitor connected in parallel to a line, the transistor control circuit and the capacitor respectively connected to the filter circuit; the transistor control circuit is electrically connected to the capacitor; the transistor control circuit controls on and off of telecommunication signals; whereas there is no current flows through a telephone line when the telephone set is in on-hook status, the transistor control circuit is not conducted through under on-hook status so to stop the telecommunication signals from flowing through, thus to warrant that the telecommunication signals in the talking line will not shunt to a line in hook-on status for upgrading signal quality in talking mode. | 07-22-2010 |
20100188169 | Reactance Varying Device - A reactance varying device comprises a voltage-controlled variable-capacitance circuit, a biasing circuit and an impedance transformer. The biasing circuit has a virtual AC ground node, which acts as a gateway to supply a bias voltage to the variable-capacitance circuit. The impedance transformer separates the variable-capacitance circuit from the AC ground node, as well as provides an inductive element to form a reactance varying LC tank. | 07-29-2010 |
20100188170 | TRANSMITTER WITH ADJUSTABLE TRANSMIT LEVEL FOR MAGNETIC LINK - A device, e.g., a hearing aid, has an electronic circuit for wireless communication of a digital signal. The circuit has a driver driving an RLC tank. The driver has a plurality of inverters whose outputs are coupled to a node of the coil via a respective one of multiple capacitors in the tank. The circuit has a controller that selectively drives one or more of the inverters with the digital signal and connects the inputs of the other inverters to a supply voltage or ground. The tank has a further plurality of series arrangements of a further capacitor and a high-voltage switch connected between the node and ground. The controller is configured for controlling the high-voltage switches. | 07-29-2010 |
20100188171 | INDUCTIVE COUPLING IN TRANSVERSE ELECTROMAGNETIC MODE - Among other things, a circuit includes a first and a second electromagnetic resonator, each configured to operate in a transverse electromagnetic mode, and a coupling device configured to operate in the transverse electromagnetic mode, wherein the coupling device is connected to the first and second electromagnetic resonators and inductively couples the first and second electromagnetic resonators. | 07-29-2010 |
20100219909 | HARMONIC SUPPRESSING CIRCUIT - There are included an LPF ( | 09-02-2010 |
20100231327 | CAPACITOR AND INDUCTOR ELEMENTS PHYSICALLY DISPOSED IN SERIES WHOSE LUMPED PARAMETERS ARE ELECTRICALLY CONNECTED IN PARALLEL TO FORM A BANDSTOP FILTER - One or more inductors and one or more capacitors are physically disposed relative to one another in series and are electrically connected to one another in parallel to form a bandstop filter. Chip inductors and chip capacitors having spaced apart conductive terminals are physically arranged in end-to-end abutting relation to minimize electrical potential between adjacent conductive terminals. The bandstop filter may be hermetically sealed within a biocompatible container for use with an implantable lead or electrode of a medical device. The values of the inductors and the capacitors are selected such that the bandstop filter is resonant at one or more selected frequencies, such as an MRI pulsed frequency. | 09-16-2010 |
20100244984 | Resonator and filter - A resonator includes: a dielectric block; first and second ground electrodes provided on or in the dielectric block, and disposed to oppose each other; a first via conductor provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the first ground electrode and an open end extending toward the second ground electrode; a second via conductor interdigitally-coupled with the first via conductor, and provided in the dielectric block orthogonally to the first and second ground electrodes, and having a short-circuit end connected to the second ground electrode and an open end extending toward the first ground electrode; a first capacitor electrode provided in the dielectric block, and connected to the first via conductor; and a second capacitor electrode provided in the dielectric block, and connected to the second via conductor. | 09-30-2010 |
20100244985 | RF Switch with High Isolation Performance - Provided is a RF switch for switching a path of a RF signal using a semiconductor transistor such as a field effect transistor (FET). The RF switch includes a plurality of resonators connected to a RF transmission line, and at least one of switching elements connected in shunt or in series between the plural of resonators. The plurality of resonators resonate by interacting with the switching elements when the switching elements are shorted or open. | 09-30-2010 |
20100277254 | COMMON-MODE FILTER - A common-mode filter including two input terminals and two output terminals and, in series between each input or output terminal and the ground, a capacitive element and a first inductive element. | 11-04-2010 |
20100277255 | LC COMPOSITE COMPONENT - An LC composite component has a unique structure that makes it easy to set frequency characteristics while reducing a circuit area and the number of layers. The LC composite component includes a laminated body including a plurality of dielectric layers. The laminated body is produced by forming input and output electrodes and an LC resonant circuit therein. The LC composite component includes a capacitor, which includes an elongated electrode portion having an elongated shape. The elongated electrode portion faces a flat electrode portion having a flat shape, with one of the dielectric layers interposed therebetween. At the same time, the elongated electrode portion constitutes an open stub that is open at a tip end. | 11-04-2010 |
20110032052 | HARMONIC SUPPRESSION DEVICE - A harmonic suppression device includes a multilayer printed circuit board (PCB). The multilayer PCB includes a first layer, a second layer, and a third layer. The third layer is connected to the ground. The first layer is configured with a power amplifier, an input microstrip, a voltage divider microstrip, and an output microstrip. The power amplifier is operable to amplify radio frequency (RF) signals input using the input microstrip and to output the amplified RF signals using the output microstrip. The second layer is configured with a first microstrip and a second microstrip. One end of each of the first and second microstrips is connected to an alternative one of the first layer and the third layer by vias, and the other ends of the first and second microstrips are unattached so as to suppress harmonics on the power amplifier. | 02-10-2011 |
20110043302 | RADIO FREQUENCY FILTER AND FILTERING UNIT THEREOF - Parameters of a radio frequency filter can be changed by changing structure of each component of the filter. Material of each component, diameters of each of magnetic cylinders, density of each of conductive coils, thickness of a dielectric layer, and thickness of an insulation tube can be changed. When any component needs to be replaced, each cover is rotated, with connection partitions moving to two slots of an insulation portion, to detach the filter. | 02-24-2011 |
20110050363 | ACTIVE LOW PASS FILTER - The invention relates to a selective active low-pass filter and to a method for improving the selectivity of such a filter. The method consists in centring, in the centre of the network, the resonant element whose frequency is closest to the cut-off frequency of the filter and in inserting in series with this element a negative resistance of higher value than the parasitic resistance of the filter. | 03-03-2011 |
20110057747 | Multi-Layered Component - A multi-layered component is disclosed, including at least one inductive region, wherein the inductive region includes a ferrite ceramic. The inductive region has electrode structures that form at least one inductance. The multi-layered component has at least one capacitive region, wherein at least one capacitive region includes a varistor ceramic. The capacitive region forms at least one capacitance. At least one inductive region and at least one capacitive region form at least one LC filter. | 03-10-2011 |
20110074523 | Electronic device - An electronic device includes a semiconductor device; and a mounting substrate mounted with the semiconductor device and connected with predetermined voltages. The semiconductor device includes a filter circuit section configured to output a harmonic component of an input signal other than a desired frequency component to the mounting substrate and output the desired frequency component to an output node of the filter circuit section. The filter circuit section includes an inductor which is larger than a parasitic inductance component in the mounting substrate. | 03-31-2011 |
20110074524 | VEHICLE-MOUNTED NOISE FILTER - A vehicle-mounted noise filter which suppresses electric field coupling between input and output terminals in the FM radio band, thereby allowing noise attenuation performance, which should originally be provided to a noise filter circuit, to be exhibited even in the FM radio band. The vehicle-mounted noise filter comprises a coil ( | 03-31-2011 |
20110095846 | Filter for Switched Mode Power Supply - There is provided a filter for receiving a rectangular or stepped source voltage to be filtered and for providing an output voltage, the filter including means arranged to determine the output voltage in dependence on the frequency components of the source voltage within the filter passband, and independent of output current drawn. | 04-28-2011 |
20110095847 | Chip filter and the related supplementary tool - A chip filter and supplementary tool combination is disclosed. The chip filter includes a insulative holder base having two arrays of wire grooves arranged along two opposing sidewalls thereof and soldering zones defined in a finished surface on each sidewall corresponding to the wire grooves, connection terminals each having a base portion respectively embedded in the soldering zones in the sidewalls of the insulative holder base and a soldering surface respectively kept in flush with the top edge of the associating sidewall, and filter elements having lead wires thereof respectively extending out of the insulative holder base through the wire grooves and respectively rested on the soldering surfaces of the connection terminals and held down in position by the supplementary tool for soldering by an automatic soldering machine. | 04-28-2011 |
20110102103 | RADIO FREQUENCY FILTER - Parameters of a radio frequency filter can be changed by changing structure of each component of the filter. Material of each component, diameters of each of magnetic cylinders, density of each of conductive coils, and thickness of each of dielectric layers can be changed. When any component needs to be replaced, the filter can be detached as needed. | 05-05-2011 |
20110102104 | Integrated Channel Filter and Method of Operation - A system includes a filter and a tuner formed on an integrated circuit. The filter receives an input signal comprising a first number of channels and communicates an intermediate output signal comprising a second number of channels less than the first number of channels. The tuner is coupled to the filter and receives the intermediate output signal and communicates an output signal comprising a third number of channels less than the second number of channels. | 05-05-2011 |
20110133853 | SEMICONDUCTOR DEVICE WITH FILTER CIRCUIT - A filter circuit formed on a semiconductor chip, includes an input node provided to input an input signal; an output bonding pad provided to output an output signal; a ground bonding pad provided to be connected a ground through a bonding wire; a parallel resonant circuit provided between the input node and the output bonding pad and having one end connected to the output bonding pad; and a serial resonant circuit having one end which is provided between the input node and the other end of the parallel resonant circuit and the other end connected with the ground bonding pad. The serial resonant circuit includes a capacitor and an inductor which are connected in serial, and the parallel resonant circuit includes a capacitor and an inductor which are connected in parallel. | 06-09-2011 |
20110163826 | Metamaterial - A unit of a metamaterial includes an uppermost part electrode, a lowermost part electrode, a first internal electrode, a second internal electrode, a third internal electrode, a fourth internal electrode, and a transmission line. The transmission line connects a section of the uppermost part electrode which extends in the −z direction to a section of the lowermost part electrode which extends in the +z direction. The length of the transmission line is set to substantially ½ of a resonant wavelength. The first internal electrode and the fourth internal electrode are respectively placed so as to be opposed to the uppermost part electrode and the lowermost part electrode. The first internal electrode and the fourth internal electrode are not electrically connected directly to each other. | 07-07-2011 |
20110169591 | FILTER CUT-OFF FREQUENCY CORRECTION CIRCUIT - A filter cut-off frequency correction circuit, inputted with a step function increasing from a first voltage to a second voltage, comprises a linear passive filter, for integrating the step function to obtain a third voltage; a first comparator, outputting a first high-level signal when the third voltage is greater than a first predetermined reference voltage; a second comparator, outputting a second high-level signal in a first period from the time that the second voltage is applied to the time that the first comparator outputs the first high-level signal; a counter, for counting a number of clock pulses of a reference clock inputted in the first period; a digital block, for calculating a variation rate of time constant according to the number of clock pulses of the reference clock, and generating a correction code; and a filter, for correcting the cut-off frequency according to the correction code. The correction circuit can improve the speed of cut-off frequency adjustment. | 07-14-2011 |
20110187481 | MULTIPATH MITIGATION CIRCUIT FOR HOME NETWORK - A filter circuit is provided having multipath interference mitigation. The filter includes a signal path extending from an input to an output. The signal path includes a conductive path and a ground. A pass band filter is disposed along the signal path between the input and the output. The pass band filter passes a first frequency spectrum in a provider bandwidth, and attenuates a second frequency spectrum in a home network bandwidth. The filter circuit further includes a multipath interference mitigation leg operatively branched from the signal path. The multipath interference mitigation leg increases a return loss of the home network bandwidth. A frequency response of the filter circuit is characterized by an insertion loss characteristic between the input and the output being less than 3 dB in the provider bandwidth, and more than 20 dB in the home network bandwidth. The frequency response is further characterized by a return loss characteristic at the output being more than 10 dB in the provider bandwidth and home network bandwidth. | 08-04-2011 |
20110234337 | Filter circuit for differential communication - In a filter circuit, first and second coils are connected to first and second communication lines, respectively. At a secondary side of the first and second coils, first and second capacitors are connected in series between the first and second communication lines. At a primary side of the first and second coils, third and fourth capacitors are connected in series between the first and second communication lines. A connection node between the first and second capacitors is grounded. A connection node between the third and fourth capacitors is grounded. The first and second coils are adjacently arranged in order to have a reversed polarity to each other. The filter circuit having the above structure works as a n-type filter capable of eliminate both common mode noise and normal mode noise. The filter circuit can eliminate noise caused by the first and second coils. | 09-29-2011 |
20110241798 | RESONATOR FOR COMMUNICATION SYSTEM AND FILTER USING THE SAME - Provided are a resonator and a filter performing a filtering operation by using the resonator. The filter includes a first resonation unit connected in series to an input terminal and having a first resonant frequency, a filtering unit connected in series to the first resonation unit to filter a signal inputted through the input terminal, a second resonation unit connected in series between the filtering unit and an output terminal and having a second resonant frequency, a first zero-order resonation unit connected in parallel to a connection terminal between the input terminal and the first resonation unit and having a first zero-order resonant frequency equal to the first resonant frequency, and a second zero-order resonation unit connected in parallel to a connection terminal between the output terminal and the second resonation unit and having a second zero-order resonant frequency equal to the second resonant frequency. | 10-06-2011 |
20110279196 | LOW-PASS FILTER WITH ADJUSTABLE CUT-OFF FREQUENCY - A low-pass filter includes an integrator having an adjustable unity frequency. The integrator includes a first input, first output and feedback loop between the first input and output of the integrator. The first input is connected to a branch that includes a first impedance, to which is applied a first input voltage of the low-pass filter. The feedback loop includes a second impedance and the first output of the integrator is the first output of the low-pass filter. | 11-17-2011 |
20110298562 | HIGH-FREQUENCY CIRCUIT - A high-frequency circuit according to one embodiment of the present invention includes a plurality of transistors, a plurality of input matching circuits, a plurality of output matching circuits, a plurality of resistors, and low-frequency oscillation suppressing circuits. The transistors are arranged on a substrate in parallel. The input matching circuits and output matching circuits are arranged on insulating substrates and connected to the transistors. The oscillation suppressing circuits are a circuit configured by a filter circuit having a desired transmission band and a resistor, and are connected to gate terminals of transistors located on both sides of the transistors, respectively. Each of resistors is formed to include a position closest to the transistor between the input matching circuits and between the output matching circuits. Furthermore, each of resistors has a length at which the oscillation suppressing circuit can suppress oscillation at the lowest frequency in the transmission band. | 12-08-2011 |
20110304410 | Filter Circuit, and Wireless Communication Module and Wireless Communication Device That Uses the Same - A filter circuit having two pass bands includes first and second bandpass filters which are connected in parallel with each other. Each of the bandpass filters includes at least a resonator group composed of a plurality of resonators arranged in orderly sequence so as to be coupled to each other to form a pass band, an input terminal coupled to a resonator on an input stage, and an output terminal coupled to a resonator on an output stage. The resonator group is composed of at least one of one or more quarter-wavelength resonators and one or more half-wavelength resonators. The resonator group of at least one of the first bandpass filter and the second bandpass filter includes both one or more quarter-wavelength resonators and one or more half-wavelength resonators. | 12-15-2011 |
20120098620 | FILTER AND LAYOUT STRUCTURE THEREOF - A filter and a layout structure of the filter are provided. The filter includes a substrate, three capacitors, and three inductors. The three capacitors and the first and second inductors are disposed on a top surface of the substrate. The third inductor is disposed on a lateral surface of the substrate. First electrodes of the first and third capacitors and a first terminal of the first inductor are connected to a first I/O terminal of the filter. A first electrode of the second capacitor, a second electrode of the third capacitor and a first terminal of the second inductor are connected to a second I/O terminal of the filter. A first terminal of the third inductor is connected to second electrodes of the first and second capacitors. | 04-26-2012 |
20120098621 | PATTERNED CAPACITOR GROUND SHIELD FOR INDUCTOR IN AN INTEGRATED CIRCUIT - Integrated circuits are disclosed including at least one inductor-capacitor component, where each of the inductor-capacitor components includes an inductor and a capacitor constructed between the inductor and a substrate. The inductor includes at least one metal loop over a shield pattern forming a first capacitor terminal over patterned oxide layer with a second capacitor layer between the patterned oxide layer and the substrate. | 04-26-2012 |
20120139663 | Susceptance - Mode Inductor - A Susceptance-Mode Inductor with infinite order resonance cavity which includes an inductor section is formed by a physical inductor coil wound about a permanent magnetic materials, with both ends of the coil connecting to a electric damper and a capacitor of the infinite order resonance cavity; thereby that power is coupled into the incoming end of the infinite order resonance cavity through a radio frequency (RF) radiation electric field and the outgoing end thereof is electrically connected to a set of resonance power storage section, or alternatively the incoming end is connected to electric charge and the outgoing end is connected to the load; accordingly, the resonance of the infinite order resonance cavity, thus allowing to convert the current or electron flow at the magnetic field end into charge output by means of Lorenz force. | 06-07-2012 |
20120161901 | METHOD OF TUNING BANDSTOP FILTERS FOR IMPLANTABLE MEDICAL LEADS - A TANK filter is provided for a lead wire of an active medical device (AMD). The TANK filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the TANK filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the TANK filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the TANK filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 06-28-2012 |
20120188027 | Band Stop Filter Employing a Capacitor and an Inductor Tank Circuit to Enhance MRI Compatibility of Active Medical Devices - A band stop filter is provided for a lead wire of an active medical device (AMD). The band stop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the lead wire of the AMD, wherein values of capacitance and inductance are selected such that the band stop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the band stop filter to attenuate current flow through the lead wire along a range of selected frequencies. In a preferred form, the band stop filter is integrated into a TIP and/or RING electrode for an active implantable medical device. | 07-26-2012 |
20120223788 | SEAL RING INDUCTOR AND METHOD OF FORMING THE SAME - Apparatuses and methods for providing inductance are disclosed. In one embodiment, a method for providing an inductor includes forming an electrical circuit on a substrate, forming a seal ring around the perimeter of the electrical circuit, providing a break in at least one layer of the seal ring, and electrically connecting the seal ring such that the seal ring operates as an inductor. | 09-06-2012 |
20120280765 | Low AC resistance conductor designs - Described herein are improved configurations for providing a stranded printed circuit board trace comprising, a plurality of conductor layers, a plurality of individual conductor traces on each of the said conductor layers, and a plurality of vias for connecting individual conductor traces on different said conductor layers, the vias located on the outside edges of the stranded trace. The individual conductor traces of each layer may be routed from vias on one side of the stranded printed circuit board trace to vias on the other side in a substantially diagonal direction with respect to the axis of the stranded printed circuit board trace. In embodiments, the stranded printed circuit board trace configuration may be applied to a wireless power transfer system. | 11-08-2012 |
20120299666 | MULTILAYER RESONATOR AND MULTILAYER FILTER - A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit. | 11-29-2012 |
20130141187 | CROSS-COUPLED BANDPASS FILTER - A cross-coupled bandpass filter includes first, second and third resonators such that a positive mutual inductance is generated between the first and third resonators and mutual inductance generated between the first and second resonators and mutual inductance generated between the second and third resonators have the same polarity, thereby generating a transmission zero in a high frequency rejection band. | 06-06-2013 |
20130200961 | ELECTRICAL DOUBLE FILTER STRUCTURE - An electrical filter structure includes a first filter core structure and a second filter core structure. The first filter core structure includes a plurality of shunt impedance elements. Similarly, the second filter core structure includes a plurality of shunt impedance elements. Shunt impedance elements of the first filter core structure are arranged in different conducting layers of a multi-layer structure, and shunt impedance elements of the second filter core structure are arranged in different layers of the multi-layer structure. Transmission lines used to implement the shunt impedance elements are interleaved. | 08-08-2013 |
20130207744 | MULTI-LAYER-MULTI-TURN HIGH EFFICIENCY INDUCTORS FOR ELECTRICAL CIRCUITS - A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater. | 08-15-2013 |
20130241672 | MULTILAYER BANDPASS FILTER - A multilayer bandpass filter includes a first capacitor electrode of a first stage LC parallel resonator, a second capacitor electrode of a second stage LC parallel resonator, and a third capacitor electrode of a third stage LC parallel resonator. Via electrodes and a line electrode define an inductor electrode of the first stage LC parallel resonator. Via electrodes and a line electrode define an inductor electrode of the second stage LC parallel resonator. Via electrodes and a line electrode define an inductor electrode of the third stage LC parallel resonator. The inductor electrodes of the three LC parallel resonators are arranged so loop planes thereof are disposed about a center axis extending in a stacking direction of dielectric layers. This permits setting of electromagnetic coupling between the LC parallel resonators of an input and an output stage, and allows a filter's attenuation characteristics to be freely set. | 09-19-2013 |
20130249645 | NON-MAGNETIC COMPOSITION FOR CERAMIC ELECTRONIC COMPONENT, CERAMIC ELECTRONIC COMPONENT USING THE SAME, AND METHOD OF MANUFACTURING THE SAME - There are provided a non-magnetic composition for a ceramic electronic component, a ceramic electronic component using the same, and a method of manufacturing the same. The non-magnetic composition includes a compound represented by Chemical Formula Zn | 09-26-2013 |
20130271240 | THROUGH-HOLE VIA INDUCTOR IN A HIGH-FREQUENCY DEVICE - The invention discloses a high-frequency device having a through-hole via inductor in a substrate. The through-hole via inductor has an integral body. The inductance of the through-hole via inductor is greater than that of the horizontal inductor. The through-hole via inductor comprises at least two materials, wherein one of said at least two materials is a conductive material. The present invention also discloses a method for manufacturing the structure of the high-frequency device, wherein the method mainly includes via-drilling and via-filling in the substrate, and lithography process on the substrate. | 10-17-2013 |
20130271241 | BALANCE FILTER - The invention discloses a balance filter formed from a combination of a first circuit and a second circuit, wherein both the first circuit and the second circuit have at least one through-hole via inductor. The balance filter is connected to an IC through a first terminal and a second terminal, wherein a power trace is disposed between the first circuit and the second circuit to deliver the power to the IC. | 10-17-2013 |
20130278353 | MULTIPATH MITIGATION CIRCUIT FOR HOME NETWORK - A filter circuit is provided having multipath interference mitigation. The filter includes a signal path extending from an input to an output. The signal path includes a conductive path and a ground. A pass band filter is disposed along the signal path between the input and the output. The pass band filter passes a first frequency spectrum in a provider bandwidth, and attenuates a second frequency spectrum in a home network bandwidth. The filter circuit further includes a multipath interference mitigation leg operatively branched from the signal path. The multipath interference mitigation leg increases a return loss of the home network bandwidth. A frequency response of the filter circuit is characterized by an insertion loss characteristic between the input and the output being less than 3 dB in the provider bandwidth, and more than 20 dB in the home network bandwidth. | 10-24-2013 |
20130293318 | BANDPASS FILTER OF RF COMMUNICATION SYSTEM - The present invention relates to the bandpass filter of an RF communication system. The bandpass filter embodies a dual band characteristic by combining an equilibrium zero-order resonator and a non-equilibrium zero-order resonator, provides transmission zero using a cross-coupling structure near a pass band, and also has a neighboring signal blocking characteristic. | 11-07-2013 |
20140002210 | PLANAR CONSTANT-RESISTANCE HYBRID FILTER | 01-02-2014 |
20140203890 | FILTER CIRCUIT - A filter circuit includes an antenna-side circuit, a transmission-side circuit, a reception-side circuit, and an external connection capacitor. The antenna-side circuit is connected to an antenna-side terminal. The transmission-side circuit is connected to a transmission-side terminal and the antenna-side circuit. The reception-side circuit is connected to a reception-side terminal, the antenna-side circuit, and ground. The external connection capacitor is connected between an external control terminal and a connection point between the antenna-side circuit and the reception-side circuit. The antenna-side circuit and the transmission-side circuit constitute a low pass filter. The antenna-side circuit and the reception-side circuit constitute a band pass filter. The reception-side circuit includes an LC parallel resonant circuit. | 07-24-2014 |
20140232485 | Discharge Capacitor - A discharge capacitor for use in electronic circuits is described. The discharge capacitor has first internal electrodes in electrical contact with a first external termination and second internal electrodes parallel to and interleaved with the first internal electrodes wherein the second internal electrodes are in electrical contact with a second external termination. A dielectric is between the first internal electrodes and adjacent second internal electrodes. A first discharge gap is between at least one first internal electrode of said first internal electrodes and said second external termination. | 08-21-2014 |
20140240060 | EMI FILTER EMPLOYING A SELF-RESONANT INDUCTOR BANDSTOP FILTER HAVING OPTIMUM INDUCTANCE AND CAPACITANCE VALUES - A bandstop filter having optimum component values is provided for a lead of an active implantable medical device (AIMD). The bandstop filter includes a capacitor in parallel with an inductor. The parallel capacitor and inductor are placed in series with the implantable lead of the AIMD, wherein values of capacitance and inductance are selected such that the bandstop filter is resonant at a selected frequency. The Q of the inductor may be relatively maximized and the Q of the capacitor may be relatively minimized to reduce the overall Q of the bandstop filter to attenuate current flow through the implantable lead along a range of selected frequencies. | 08-28-2014 |
20140266505 | DEVICE FOR EMC FILTERING ON A PRINTED CIRCUIT - An EMC filtering device comprises a printed circuit comprising at least two parallel layers of a high-permittivity material, which are positioned between two layers of an insulating material that are parallel to one another and to the high-permittivity material layers. A core made of a magnetic material comprises three cylindrical arms passing perpendicularly through the high-permittivity and insulating material layers. At least two windings winding around the first arm of the magnetic material core, the windings and the first arm forming a first coil. At least two windings winding around the second arm of the magnetic material core, the windings and the second arm forming a second coil. The two coils being coupled coils. | 09-18-2014 |
20140292443 | MULTILAYER RESONATOR AND MULTILAYER FILTER - A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit. | 10-02-2014 |
20140333393 | Ultra-Wideband Assembly System And Method - An ultra-wideband assembly is provided. The assembly includes a non-conductive tapered core having a conductive wire wound on an outer surface of the non-conductive tapered core, a low-frequency inductor coupled to the non-conductive tapered core via the distal end of the conductive wire and configured to allow mounting of the non-conductive tapered core at an angle with respect to the circuit board. The low frequency inductor is being disposed on a dielectric board configured to be coupled to the circuit board. The assembly includes an ultra-wideband capacitor coupled to the non-conductive tapered core via the proximate end of the conductive wire, the ultra-wideband capacitor being also coupled to the transmission line on the dielectric board. | 11-13-2014 |
20150048901 | MICROELECTROMECHANICAL SYSTEMS COMPRISING DIFFERENTIAL INDUCTORS AND METHODS FOR MAKING THE SAME - An integrated Microelectromechanical Systems (“MEMS”) device ( | 02-19-2015 |
20150303888 | SEMICONDUCTOR DEVICE WITH INDUCTOR-CAPACITOR RESONANT CIRCUIT - A semiconductor device with an inductor-capacitor (LC) resonant circuit includes a first insulation layer, an inductor component, and a capacitor component. The inductor component includes a coil-conductor segment and two extension-conductor segments. The coil-conductor segment and the extension-conductor segments are located on a same surface of the first insulation layer, and the extension-conductor segments are coupled to two ends of the coil-conductor segment, respectively. The extension-conductor segments are arranged at an interval, and extend outwards relative to the coil-conductor segment. A first region is defined by the extension-conductor segments and the coil-conductor segment, and the capacitor component is arranged corresponding to the first region in an embedded manner on the other surface, opposite to the inductor component, of the first insulation layer. | 10-22-2015 |
20150318593 | RESONATOR AND BAND PASS FILTER - A resonator includes a multilayer body including a plurality of dielectric layers. An electrode is disposed on each of the plurality of dielectric layers. The resonator includes ground electrodes disposed on any of the dielectric layers, capacitor electrodes disposed on any of the dielectric layers, and inductor electrodes. The inductor electrodes are located in portions which start from nodes between the inductor electrodes and the capacitor electrodes as start points, pass through line electrodes disposed on dielectric layers different from the dielectric layers on which the capacitor electrodes are disposed and the dielectric layers on which the ground electrodes are disposed, and reach nodes between the inductor electrodes and the ground electrode as end points. The line electrode have a ring-shaped configuration, as viewed in a stacking direction of the dielectric layers. | 11-05-2015 |
20150381135 | LC tank capable of reducing electromagnetic radiation by itself and manufacturing method thereof - The present invention discloses an LC tank capable of reducing electromagnetic radiation by itself and the manufacturing method of the same. An embodiment of said LC tank comprises: a first tank area whose boundary is defined by a first part of an inductance; a second tank area whose boundary is defined by a second part of the inductance in which the second part includes a gap; a cross-interconnection structure operable to electrically connect the first and second parts of the inductance and distinguish the first tank area from the second tank area; and at least one capacitance formed inside at least one of the first and second tank areas, wherein the area ratio of the first tank area to the second tank area is between 20% and 80%. | 12-31-2015 |
20160065163 | GAIN PEAKING TECHNIQUES IN HIGH-FREQUENCY PASSIVE LOW PASS FILTERS - Techniques to maintain gain flatness in the frequency response of a passband signal over a circuit chain. The techniques may be employed in the receive chain of a millimeter wave band wireless receiver, in the transmit chain of a millimeter wave band wireless transmitter, or in both the receive chain and the transmit chain of a millimeter wave band wireless transceiver. The techniques include mismatching the input and output impedance of a passive low pass filter used in the chain to peak the gain of the passband signal at or near the cutoff frequency (Fc) of the filter. | 03-03-2016 |
20160087598 | INPUT/OUTPUT SYSTEMS AND DEVICES FOR USE WITH SUPERCONDUCTING DEVICES - Systems and devices for providing differential input/output communication with a superconducting device are described. Each differential I/O communication is electrically filtered using a respective tubular filter structure incorporating superconducting lumped element devices and high frequency dissipation by metal powder epoxy. A plurality of such tubular filter structures is arranged in a cryogenic, multi-tiered assembly further including structural/thermalization supports and a device sample holder assembly for securing a device sample, for example a superconducting quantum processor. The interface between the cryogenic tubular filter assembly and room temperature electronics is achieved using hermetically sealed vacuum feed-through structures designed to receive flexible printed circuit board cable. | 03-24-2016 |
20160173054 | MULTIPATH MITIGATION CIRCUIT FOR HOME NETWORK | 06-16-2016 |
20160204755 | RESONATOR DEVICE AND HIGH FREQUENCY FILTER | 07-14-2016 |