Class / Patent application number | Description | Number of patent applications / Date published |
333188000 | With means for varying response | 23 |
20090039981 | System and Method for Controlling Resonance Frequency of Film Bulk Acoustic Resonator Devices - Disclosed is a system and method for controlling a resonance frequency of a Film Bulk Acoustic Resonator (FBAR) device. The system includes at least one switching capacitor coupled to the FBAR device and a modulator. The at least one switching capacitor includes at least one capacitor and a switch configuration disposed in series with the FBAR device and the at least one capacitor, which is switch configuration capable of opening and closing connection of the at least one capacitor with the FBAR device. The modulator is coupled to the switch configuration, which generates a switching condition signal based on the manufacturing variation in the FBAR device and the environmental effects on the FBAR device. The switch configuration performs opening and closing of the connection of the at least one capacitor and the FBAR device based on the switching condition signal. | 02-12-2009 |
20090072925 | FREQUENCY TUNING CIRCUIT FOR LATTICE FILTER - A lattice tunable filtering circuit includes a first input and a second input, and a first output and a second output. The circuit includes two series branches and two parallel branches. The first and second series branches include a Tunable Resonator Component (TRC) which presents a first series resonance frequency whereas the third and fourth parallel branches present a second series resonance frequency which has a value being lower than that of the first series resonance frequency. The first and second series resonance frequencies are tunable by one analog control quantity. The filtering circuit further includes a feedback control loop for the control of the analog quantity, which feedback is based on a criterion of equality between the modulus of impedances Zs and Zp. | 03-19-2009 |
20090115553 | TUNABLE RESONATOR USING FILM BULK ACOUSTIC RESONATOR (FBAR) - A tunable resonator is provided. The tunable resonator includes a film bulk acoustic resonator (FBAR) for performing a resonance, and at least one driver which is arranged at a side of the FBAR and is deformed and brought into contact with the FBAR by an external signal, thereby changing a resonance frequency of the FBAR. Accordingly, a multiband integration and a one-chip manufacture can be implemented simply using a micro electro mechanical system (MEMS) technology and a mass production is possible. | 05-07-2009 |
20090273416 | FREQUENCY-VARIABLE ACOUSTIC THIN FILM RESONATOR, FILTER AND COMMUNICATION APPARATUS USING THE SAME - An acoustic thin film resonator including: a first piezoelectric thin film | 11-05-2009 |
20100007442 | TUNING ELEMENT AND TUNABLE RESONATOR - A resonator is provided with a tuning element based on piezoelectricity. The piezoelectric basic element includes at least one piezoelectric layer and a metal layer. Such a basic element is first coated with a thin insulating layer and then with a good conductor. The thickness of the conductive coating is greater than the skin depth of a field corresponding to the operating frequency of the structure in the conductor. The tuning element formed in this manner is fastened on, e.g., some inner surface of the resonator cavity and acts to change the natural frequency of the resonator by electric control. When using the tuning element, no mechanical arrangement is required for moving the tuning element. Furthermore, the tuning element does not cause considerable dielectric losses nor intermodulation when being in a radiofrequency electromagnetic field, because the field cannot significantly penetrate through said conductive coating into the piezoelectric material. | 01-14-2010 |
20100007443 | Nano electromechanical integrated-circuit filter - A nano electromechanical integrated circuit filter and method of making. The filter comprises a silicon substrate; a sacrificial layer; a device layer including at least one resonator, wherein the resonator includes sub-micron excitable elements and wherein the at least one resonator possess a fundamental mode frequency as well as a collective mode frequency and wherein the collective mode frequency of the at least one resonator is determined by the fundamental frequency of the sub-micron elements. | 01-14-2010 |
20100019865 | Module With Frequency-Tunable Function - The invention relates to an electronic package comprising a substrate, a frequency tunable function at the surface of the said substrate, a dielectric material having variable permittivity with an electrical excitation in contact with the said function and a support secured to the substrate so as to define the package, characterized in that the substrate comprises a membrane, the said membrane lying between an upper cavity and a lower cavity of the package, at least one cavity being filled with the dielectric material that can be a liquid crystal. The presence of two cavities, at least one of which is filled with variable-permittivity dielectric material, makes it possible to increase the operating frequency range of the function. | 01-28-2010 |
20110068880 | MICROMECHANICAL NETWORK - An electrical network and method of manufacturing thereof. A substrate containing an acoustic resonator enclosed in a cavity. An apparatus includes a substrate with a cavity and a network. The network has a resonator formed on a substrate, the resonator being enclosed within the resonator cavity. A capacitive device is formed on the same substrate and connected in series with the resonator. The capacitive device has a conductive film and a solid-dielectric film. The conductive film has high absorption to a select laser wavelength. The network has at least two open-ended electrical contacts on the substrate for an off-substrate electrical connection. | 03-24-2011 |
20110241800 | ELASTIC WAVE DEVICE AND METHOD FOR MANUFACTURING THE SAME - A method of manufacturing an elastic wave device is provided with a lamination step of forming, on a substrate ( | 10-06-2011 |
20120286900 | TUNABLE FILTER - A tunable filter that is capable of magnifying a pass band width or increasing a frequency variable amount includes a resonator circuit portion provided in at least one of a series arm connecting an input terminal and an output terminal to each other and a parallel arm connecting the series arm and a ground potential to each other, a first variable capacitor is connected in series to the resonator circuit portion and a second variable capacitor is connected in parallel to the resonator circuit portion. The resonator circuit portion includes a piezoelectric substrate including LiNbO | 11-15-2012 |
20120313731 | Method, System, and Apparatus for Resonator Circuits and Modulating Resonators - Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed. | 12-13-2012 |
20120326807 | ACOUSTIC RESONATOR STRUCTURE HAVING AN ELECTRODE WITH A CANTILEVERED PORTION - An acoustic resonator comprises (a) a substrate having atop surface and a bottom surface, a first end portion and an opposite, second end portion, and a body portion defined therebetween; (b) an acoustic mirror having a top surface and a bottom surface, a first end portion and an opposite, second end portion, and a body portion defined therebetween, wherein the bottom surface is formed on the top surface of the substrate; (c) a first electrode having a top surface and a bottom surface, a first end portion and an opposite, second end portion, and a body portion defined therebetween, wherein the bottom surface is formed on the top surface of the acoustic mirror; (d) a piezoelectric layer having a top surface and a bottom surface, a first end portion and an opposite, second end portion, and a body portion defined therebetween, wherein the bottom surface is formed on the top surface of the first electrode; and (e) a second electrode having a top surface and a bottom surface, a first end portion and an opposite, second end portion, and a body portion defined therebetween. The bottom surface is formed on the top surface of the piezoelectric layer, wherein the overlapped area of body portions of the substrate, the acoustic mirror, the first electrode, the piezoelectric layer and the second electrode is defined as an active area A. | 12-27-2012 |
20130033340 | BULK ACOUSTIC WAVE RESONATOR - Provided is a bulk acoustic wave resonator (BAWR). The BAWR may include a bulk acoustic wave resonance unit and an anti-resonant frequency modifying unit to modify an anti-resonant frequency generated from the bulk acoustic wave resonance unit. | 02-07-2013 |
20130113577 | TUNABLE FILTER STRUCTURES AND DESIGN STRUCTURES - Tunable filter structures, methods of manufacture and design structures are disclosed. The method of forming a filter structure includes forming a piezoelectric resonance filter over a cavity structure. The forming of the piezoelectric resonance filter includes: forming an upper electrode on one side of a piezoelectric material; and forming a lower electrode on an opposing side of the piezoelectric material. The method further includes forming a micro-electro-mechanical structure (MEMS) cantilever beam at a location in which, upon actuation, makes contact with the piezoelectric resonance filter. | 05-09-2013 |
20130194057 | TEMPERATURE CONTROLLED ACOUSTIC RESONATOR - An acoustic resonator device includes an annular acoustic resonator, a heater coil and a heat sensor. The annular acoustic resonator is positioned over a trench formed in a substrate of the acoustic resonator device. The heater coil is disposed around a perimeter of the annular acoustic resonator, the heater coil including a resistor configured to receive a heater current. The heat sensor is configured to adjust the heater current in response to a temperature of the heater coil. | 08-01-2013 |
20130321101 | TEMPERATURE-CONTROLLED INTEGRATED PIEZOELECTRIC RESONATOR APPARATUS - An integrated resonator apparatus comprises a piezoelectric resonator, an acoustic Bragg reflector coupled to the piezoelectric resonator, and a substrate on which the acoustic Bragg reflector is disposed. The apparatus also includes an active heater layer covering the piezoelectric resonator. Heat produced by the active heater layer is controllable by an amount of current provided through the heater layer. | 12-05-2013 |
20130342285 | VARIABLE CAPACITANCE ELEMENT AND TUNABLE FILTER - A variable capacitance element includes a piezoelectric substrate, a buffer layer located on the piezoelectric substrate with an orientation, a dielectric layer located on the buffer layer and having a relative dielectric constant that varies in accordance with an applied voltage, and a first electrode and a second electrode arranged to apply an electric field to the dielectric layer. | 12-26-2013 |
20140085020 | ACOUSTIC STRUCTURE COMPRISING AT LEAST ONE RESONATOR AND AT LEAST ONE COINTEGRATED CAPACITOR IN ONE AND THE SAME PIEZOELECTRIC OR FERROELECTRIC LAYER - An acoustic structure, comprising at least one acoustic resonator exhibiting at least one resonant frequency in a band of operating frequencies and an integrated capacitor, further comprises: a stack of layers, comprising at least one active layer of piezoelectric material or of ferroelectric material; the resonator being frequency tunable and being produced by a first subset of layers of the stack comprising the at least one active layer and at least two electrodes; the integrated capacitor being produced by a second subset of layers comprising the active layer and at least two electrodes; the first and second subsets of layers being distinguished by a modification of layers so as to exhibit different resonant frequencies. | 03-27-2014 |
20140125432 | SELECTIVE TUNING OF ACOUSTIC DEVICES - This disclosure provides implementations of methods, apparatus and systems for producing acoustic wave devices and for selectively modifying one or more acoustic or electromechanical characteristics of such devices. In one aspect, a method includes depositing a structural layer over a substrate. The structural layer includes a plurality of structural portions, each being positioned over a corresponding device region. The method also includes arranging a mask layer over the structural layer. The mask layer includes a plurality of mask portions, each including a number of mask openings that expose a corresponding region of the structural portion. The method also includes accelerating dopant particles toward the mask layer. The accelerated dopant particles that proceed through the mask openings are impacted into the corresponding structural portion. The impacted dopant particles modify material properties in the structural portion, which then effect a change in the acoustic or electromechanical characteristics of the acoustic wave device. | 05-08-2014 |
20140340173 | Method, System, and Apparatus for Resonator Circuits and Modulating Resonators - Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed. | 11-20-2014 |
20150381141 | TEMPERATURE CONTROLLED ACOUSTIC RESONATOR - An acoustic resonator device includes an annular acoustic resonator, a heater coil and a heat sensor. The annular acoustic resonator is positioned over a trench formed in a substrate of the acoustic resonator device. The heater coil is disposed around a perimeter of the annular acoustic resonator, the heater coil including a resistor configured to receive a heater current. The heat sensor is configured to adjust the heater current in response to a temperature of the heater coil. | 12-31-2015 |
20160020750 | Method, System, and Apparatus for Resonator Circuits and Modulating Resonators - Embodiments of resonator circuits and modulating resonators and are described generally herein. One or more acoustic wave resonators may be coupled in series or parallel to generate tunable filters. One or more acoustic wave resonances may be modulated by one or more capacitors or tunable capacitors. One or more acoustic wave modules may also be switchable in a filter. Other embodiments may be described and claimed. | 01-21-2016 |
20160204763 | RESONANT CIRCUIT AND HIGH-FREQUENCY FILTER | 07-14-2016 |