Patent application number | Description | Published |
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 |
20100039189 | LAMINATED BAND-PASS FILTER - In a laminated band-pass filter, a capacitance is formed between a ground electrode of a ground electrode formation layer and each of capacitor electrodes of capacitor electrode formation layers. An even number of LC parallel resonators is arranged such that via electrodes and line electrodes define a plurality of inductor electrodes and, when viewed in a direction in which the inductor electrodes are arranged, the surfaces of the loops of the inductor electrodes overlap each other at least partially. The loops defined by the inductor electrodes of neighboring LC parallel resonators have opposite directions. The capacitor electrodes have a shape and distribution or arrangement having point symmetry in plan view. | 02-18-2010 |
20100171568 | LAMINATED BAND PASS FILTER - A small low-loss laminated band pass filter attains steep attenuation from a pass band to out-of pass band and reduced ripple in the band. Capacitances are generated between a ground electrode on a ground electrode forming layer and capacitor electrodes on a capacitor electrode forming layer, a plurality of inductor electrodes are defined by via electrodes and the line electrodes, and portions of respective loop surfaces of the inductor electrodes overlap with one another when viewed from a direction of arrangement of the inductor electrodes. Furthermore, a line electrode is arranged on a first line electrode forming layer and line electrodes are arranged on a second line electrode forming layer. | 07-08-2010 |
20100283557 | MULTILAYER BANDPASS FILTER - A multilayer bandpass filter that is capable of preventing variations in filter characteristics caused by variations in electrode formation, etc., is easily reduced in size, and performs predetermined impedance conversion between an input and an output, includes a first common electrode and a second common electrode disposed on a dielectric layer, and capacitor electrodes are disposed on a dielectric layer. An input/output terminal lead-out electrode is disposed on a dielectric layer, input/output terminal lead-out electrodes are disposed on a dielectric layer, and line electrodes are disposed on a dielectric layer. Via electrodes are formed to establish conduction in the layering direction between individual electrode patterns disposed on the plural dielectric layers. Three LC parallel resonators are constructed with such an arrangement, and respective line lengths of the line electrodes are gradually changed in order to convert the impedance between the input and the output. | 11-11-2010 |
20110074526 | MULTILAYER BANDPASS FILTER - In a multilayer bandpass filter, a first capacitor is defined between a first capacitor electrode and a ground electrode. A second capacitor is defined between a second capacitor electrode and the ground electrode. A first inductor is defined by first and second via electrodes and a first inductor electrode. A second inductor is defined by third and fourth via electrodes and a second inductor electrode. Two LC parallel resonators, one of which includes the first inductor and the first capacitor and the other one of which includes the second inductor and the second capacitor, are provided. The second via electrode included in one of the LC parallel resonators and the fourth via electrode included in the other one of the LC parallel resonators are electrically connected to each other by a via coupling electrode. | 03-31-2011 |
20110169586 | MULTILAYER BALANCED FILTER - A multilayer balanced filter includes a first coil including a first straight line electrode and via electrodes. A first capacitor, a second capacitor, and a third capacitor are provided respectively between a ground electrode and a first capacitor electrode, between the ground electrode and a second capacitor electrode, and between the ground electrode and a third capacitor electrode. The first coil and the first capacitor constitute an LC resonator. A second straight line electrode is arranged in parallel or substantially in parallel with the first straight line electrode, and a second coil and a third coil, each having a loop plane perpendicular or substantially perpendicular to the loop plane of the first coil, are provided. A second capacitor and a third capacitor are respectively connected between balanced output terminals and the ground. | 07-14-2011 |
Patent application number | Description | Published |
20110140806 | LAMINATED BALANCE FILTER - A laminated balance filter includes a first capacitor electrode and a ground electrode that are disposed opposite to each other to define a capacitor at an unbalanced side. An unbalanced side coil is provided in a dielectric layer. Three balanced side coils are provided in three dielectric layers. The three balanced side coils preferably have a substantially helical shape and are wound in the same winding directions. The coil located in the center of the three balanced side coils is disposed near the unbalanced side coil so as to be electromagnetic-field-coupled to the unbalanced side coil. | 06-16-2011 |
20110267166 | ELECTRONIC COMPONENT AND METHOD FOR MAKING THE SAME - An electronic component that reduces resistance and prevents occurrence of an edge effect, includes a laminated body formed by stacking insulator layers. Conductor layers are linear conductors, and define coils included in the laminated body. The conductor layers face each other, with the insulator layer interposed therebetween, and allow signals of substantially the same phase to pass therethrough. The conductor layers define regions, each having a shape which decreases in thickness in the z-axis direction with increasing distance from a center thereof in a line width direction. | 11-03-2011 |
20120098622 | MULTILAYER FILTER - A multilayer filter includes a laminate including a plurality of dielectric layers stacked on each other. Inner layer electrodes and outer terminals are provided in the laminate. First and second balanced-side capacitors connected in series between first and second balanced terminals are defined by the inner layer electrodes. An inner-layer plate electrode not connected to any outer terminals is provided on the first dielectric layer. A first plate electrode connected to the first balanced terminal and a second plate electrode connected to the second balanced terminal are provided on the second dielectric layer in opposing relation to the inner-layer plate electrode. The inner-layer plate electrode and the first plate electrode and the first dielectric layer constitute the first balanced-side capacitor, and the inner-layer plate electrode and the second plate electrode and the first dielectric layer constitute the second balanced-side capacitor. | 04-26-2012 |
20120098623 | MULTILAYER FILTER - A multilayer filter includes a laminate including a plurality of dielectric layers stacked on each other. Inner layer electrodes and outer terminals are provided in the laminate. A second coil electrode constituting a balanced-side inductor is defined by one of the inner layer electrodes. The second coil electrode has a coiled shape, and includes a first end connected to a first coil electrode through a via electrode and a second end connected to a third coil electrode through a via electrode. The second coil electrode is connected at a predetermined position along the winding direction thereof to a ground terminal, as one of the outer terminals, through an electrode for connection to a ground. The position where the ground connection electrode is connected to the second coil electrode is determined based on a balance characteristic in the balanced terminal side. | 04-26-2012 |
20120119852 | MULTILAYER BAND-PASS FILTER - In a multilayer band-pass filter, each of first-stage to third-stage LC parallel resonators includes capacitor electrodes, via electrodes, and a line electrode. Jump-coupling capacitor electrodes face the capacitor electrodes of the first-stage and third-stage LC parallel resonators. The direction in which the inductor electrode extends from the capacitor electrodes of each of the first-stage and third-stage LC parallel resonators is opposite to the direction in which the inductor electrode extends from the capacitor electrodes of the second-stage LC parallel resonator. | 05-17-2012 |
20120319801 | HIGH-FREQUENCY LAMINATED COMPONENT AND LAMINATED HIGH-FREQUENCY FILTER - A laminate defining a high-frequency laminated component includes a ground electrode on a bottom surface of a lowermost insulating layer. A second insulating layer includes an inner-layer ground electrode arranged over substantially the entire surface thereof. A portion from a third insulating layer to a fifth insulating layer is provided with a capacitor electrode defining a series capacitor of a ground impedance adjustment circuit and capacitor electrodes defining a first parallel capacitor and a second parallel capacitor. A sixth insulating layer has an inner-layer ground electrode provided over substantially the entire surface thereof. The inner-layer ground electrodes are arranged in electrical continuity with the ground electrode by via holes. | 12-20-2012 |
20130154768 | LAMINATED BALANCED FILTER - A laminated balanced filter includes one unbalanced terminal, two balanced terminals, a ground terminal, an unbalanced-side LC parallel resonator, an intermediate LC parallel resonator, and a balanced-side inductor. The inductor electrode pattern of the balanced-side inductor includes a first portion extending from one end portion to a connection portion and a second portion extending from the other end portion to the connection portion. A direction of a current flowing through the first portion is opposite to a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. A direction of a current flowing through the second portion of the balanced-side inductor is the same as a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. The laminated balanced filter further includes a coupling capacitor connected between a balanced terminal connected to the first portion and an unbalanced terminal. | 06-20-2013 |
20130307643 | BALANCE FILTER - A balance filter includes an unbalanced terminal, a first balanced terminal, a second balanced terminal, a ground terminal, an unbalanced-side coupling coil, a balanced-side coupling coil electromagnetically coupled to the unbalanced-side coupling coil, and an unbalanced-side capacitor. The unbalanced-side capacitor, the unbalanced-side coupling coil, and a portion of the balanced-side coupling coil define an LC parallel resonant circuit. A first end of the balanced-side coupling coil is a terminal having the same polarity as that of a first end of the unbalanced-side coupling coil. A second end of the unbalanced-side coupling coil is connected to the first end of the balanced-side coupling coil. | 11-21-2013 |
20130335159 | ELECTRONIC COMPONENT - An electronic component includes a laminate including a plurality of insulator layers and a mounting surface. The mounting surface is defined by the outer edges of the plurality of insulator layers that are continuously joined together. An LC parallel resonator is embedded in the laminate, and includes a coil and a capacitor. An unbalanced signal is inputted to the LC parallel resonator. A coil is embedded in the laminate. The coil is electromagnetically coupled to the coil, and outputs balanced signals. Outer electrodes are provided on the mounting surface, and are grounded. A ground conductor layer of the capacitor is connected to an outer electrode by extending to the mounting surface. | 12-19-2013 |
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 |
20150109069 | DIRECTIONAL COUPLER - A directional coupler includes a multilayer body including a plurality of stacked dielectric layers, a main line including a first main line portion and a second main line portion which are connected in series to each other in this order and that is provided in the multilayer body, and a sub-line including a first sub-line portion and a second sub-line portion which are connected in series to each other in this order, the first sub-line portion being electromagnetically coupled to the first main line portion, the second sub-line portion being electromagnetically coupled to the second main line portion, and the sub-line being provided on one side in a stacking direction with respect to the main line in the multilayer body. The second main line portion is provided on a dielectric layer that is different from a dielectric layer on which the first main line portion is provided and/or the second sub-line portion is provided on a dielectric layer that is different from a dielectric layer on which the first sub-line portion is provided. | 04-23-2015 |
20150162888 | VARIABLE-FREQUENCY RESONANCE CIRCUIT AND VARIABLE-FREQUENCY FILTER - A variable-frequency resonance circuit includes first and second input/output terminals and a resonance circuit portion. The resonance circuit portion includes a first inductor and first and second LC series circuits. The resonance circuit portion is connected between a ground and a transmission line that connects the first and second input/output terminals. The first LC series circuit includes a second inductor and a variable capacitor connected in series with each other. The second LC series circuit includes a third inductor and a fixed capacitor connected in series with each other. The first and second LC series circuits are connected in parallel between the first inductor and a ground. The first and second inductors are configured such that positive-coupling mutual inductance is produced therebetween. | 06-11-2015 |
20150303890 | COMPOSITE LC RESONATOR AND BAND PASS FILTER - A composite LC resonator includes a ground electrode adjacent to a first principal surface of a multilayer body, a first capacitor electrode farther inward than the ground electrode and defining a first capacitor together with the ground electrode, a first electrode of a second capacitor, a second electrode of the second capacitor defining a second capacitor together with the first electrode of the second capacitor, a first via-electrode defining a first inductor, a first end of the first via-electrode electrically connected to the first capacitor electrode and a second end of the first via-electrode electrically connected to the first electrode of the second capacitor, and a second via-electrode defining a second inductor, a first end of the second via-electrode electrically connected to the second electrode of the second capacitor and a second end of the second via-electrode being electrically connected to the ground electrode. | 10-22-2015 |