Tunable Patents (Class 333/205)
  • Patent number: 11664563
    Abstract: Embodiments provide a filtering device, to effectively simplify assembly and tuning processes. The filtering device includes: a housing, including an inner cavity; a resonant conductor, having a resonance function, and disposed inside the inner cavity; and a pressing element, having one end disposed on the housing and another end suspended, and facing a position of an open-circuit end of the resonant conductor. A distance between the pressing element and the resonant conductor is changeable when the pressing element is pressed or drawn to adjust a resonant frequency. The filtering device provided in various embodiments is applicable to a plurality of communications devices for selecting a signal frequency.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: May 30, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liangyong Deng, Dantao Cai
  • Patent number: 11641059
    Abstract: A wireless communication structure, a display panel and a wireless communication device, the wireless communication structure includes: a loop structure including a first connection end, a second connection end and a coil body, at least a part of the coil body being connected between the first connection end and the second connection end; an antenna connected to the coil body. The antenna is connected to the coil body of the loop structure, so that not only the loop structure and the antenna can be arranged in a limited space, but also a desired optical performance of the display screen can be ensured.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: May 2, 2023
    Assignee: Yungu (Gu'an) Technology Co., Ltd.
    Inventors: Huan-Chu Huang, Shuang Cui, Jie Wu
  • Patent number: 11534543
    Abstract: A method for making a fluid delivery device including a reusable portion and a disposable portion. The disposable portion is adapted to be secured to a user and includes a conduit fluidly connecting a reservoir containing a fluid and a moveable pumping member. The moveable pumping member can expand an expandable structure with the fluid. The reusable portion is selectively engageable to the disposable portion and contains a drive device for engaging the moveable pumping member of the disposable portion. The drive device has a rotatable pumping actuation member with a plurality of projections for engaging the moveable pumping member and thereby moving the fluid to expand the expandable structure.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: December 27, 2022
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Larry Brian Gray
  • Patent number: 11532889
    Abstract: An antenna device includes an antenna surface on which an antenna conductor is provided, a ground surface which is opposed to the antenna surface and on which a ground conductor is provided, and a stub configured by connecting, in series, a plurality of transmission lines in which a line width of at least a part of at least one transmission line is different from line widths of other two or more transmission lines. The at least one transmission line has straight portions and a bent portion.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: December 20, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD
    Inventor: Taichi Hamabe
  • Patent number: 11437922
    Abstract: A printed circuit board power cell having a printed circuit board including a DC bus disposed within the printed circuit board. The printed circuit board power cell includes a plurality of capacitors connected to the DC bus, a three-phase AC input disposed on the printed circuit board and a single-phase AC output disposed on the printed circuit board. The printed circuit board power cell also includes a power module connected to the DC bus, the three-phase AC input and the single-phase AC output, wherein the power module receives three phase AC input power via the three-phase AC input and responsively outputs a single-phase AC power via the single-phase AC output.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: September 6, 2022
    Assignee: Siemens Aktiengesellschaft
    Inventors: Abdelnassir Abdalla, John B. Balicki, Jr., Edward Alan Cheesman, Mukul Rastogi
  • Patent number: 11411641
    Abstract: Methods, systems, and devices for wireless communications are described in which RF-domain wireless routers may repeat, extend, or redirect beamformed wireless signals received from one or more transmitters to one or more receivers. The router may receive transmissions at a mmW frequency using a first array of antenna elements, and provide the transmissions to a beamforming network, such as a Butler matrix, that outputs one or more a signals to a switching network. The switching network may perform switching to provide the one or more signals to desired inputs of an output beamforming network that outputs beamformed transmission beams via a second array of antenna elements.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: August 9, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Raju Hormis, Navid Abedini, Junyi Li, Juergen Cezanne, Ozge Koymen
  • Patent number: 11101531
    Abstract: A tunable filter for adjustable filtering between a minimum frequency and a maximum frequency includes a transmission line designed to transmit a signal and having longitudinal axis. The tunable filter further includes a two-dimensional capacitor array including step-tunable capacitors located along the transmission line, a first dimension of the two-dimensional capacitor array being along the longitudinal axis and a second dimension of the two-dimensional capacitor array being located perpendicular to the longitudinal axis. The tunable filter further includes a controller coupled to each of the step-tunable capacitors and designed to control each of the step-tunable capacitors independently to be in a biased mode or in an unbiased mode based on a desired frequency response of the tunable filter.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: August 24, 2021
    Assignee: SMITHS INTERCONNECT, INC.
    Inventors: James Allan Wilkerson, Jr., Shawn Kalen O'Brien
  • Patent number: 10944416
    Abstract: This disclosure describes systems, methods, and apparatus for a digital-to-analog (DAC) converter, that can be part of a variable capacitor and/or a match network. The DAC can include a digital input, an analog output, N contributors (e.g., switched capacitors), and an interconnect topology connecting the N contributors, generating a sum of their contributions (e.g., sum of capacitances), and providing the sum to the analog output. The N contributors can form a sub-binary sequence when their contributions to the sum are ordered by average contribution. Also, the gap size between a maximum contribution of one contributor, and a minimum contribution of a subsequent contributor, is less than D, where D is less than or equal to two time a maximum contribution of the first or smallest of the N contributors.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: March 9, 2021
    Assignee: Advanced Energy Industries, Inc.
    Inventor: Gideon Van Zyl
  • Patent number: 10862185
    Abstract: An integrated circuit can include a first capacitor in a first end portion of the integrated circuit and including a first plate and a second plate, the first plate of the first capacitor being electrically coupled to ground and within a first metal layer of the integrated circuit, a first transmission line electrically coupled to the second plate of the first capacitor, the first transmission line being within a second metal layer of the integrated circuit, a second capacitor in a second end portion of the integrated circuit and including a first plate and a second plate, the first plate of the second capacitor being electrically coupled to ground and within the first metal layer of the integrated circuit, and a second transmission line electrically coupled to the second plate of the second capacitor, the second transmission line being in the second metal layer of the integrated circuit.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: December 8, 2020
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Kimberly Dawn Eilert
  • Patent number: 10673110
    Abstract: Systems and methods for introducing DC bias in a radio frequency (RF) signal communicated over a transmission line are provided. In one example implementation, the RF system can include a transmission line having a first port and a second port. The transmission line can be configured to communicate an RF signal between a first port and a second port. One or more DC bias resistors can be coupled to the transmission line at a location between the first port and the second port. Each DC bias resistor can provide a path for injecting DC current to the transmission line to provide DC bias for the RF signal. Each DC bias resistor can be coupled to the transmission line via a point connection.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 2, 2020
    Assignee: AVX Corporation
    Inventor: George Korony
  • Patent number: 10490341
    Abstract: An electrical device comprises a substrate, a first dielectric layer, a first die, an adjustable inductor and a second die. The substrate has a first surface. The first dielectric layer is disposed on the first surface of the substrate and has a first surface. The first die is surrounded by the first dielectric layer. The adjustable inductor is electrically connected to the first die. The adjustable inductor comprises a plurality of pillars surrounded by the first dielectric layer, a plurality of first metal strips disposed on the first surface of the first dielectric layer and electrically connected to the pillars, and a plurality of second metal strips disposed on the first surface of the first dielectric layer and electrically connected to the pillars. A width of at least one of the second metal strips is different than a width of at least one of the first metal strips. The second die is electrically connected to the adjustable inductor.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: November 26, 2019
    Assignee: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventors: Cheng-Yuan Kung, Hung-Yi Lin, Teck-Chong Lee, Sheng-Chi Hsieh, Chien-Hua Chen
  • Patent number: 10454148
    Abstract: A compact band pass filter (BPF), including a first transmission line electromagnetically coupled to a second transmission line; and an isolating surface positioned between the first transmission line and the second transmission line, wherein the isolating surface includes at least one aperture designed to produce a desired electromagnetic coupling between the first transmission line and the second transmission line wherein the coupling produces a passband such that certain frequencies within an input transmission signal are filtered out.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 22, 2019
    Assignee: Eagantu Ltd.
    Inventors: Michael Dakhiya, Eran Shaked
  • Patent number: 10293117
    Abstract: A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 21, 2019
    Assignee: DEKA Products Limited Partnership
    Inventor: Larry B. Gray
  • Patent number: 9929713
    Abstract: The present disclosure is applicable to the field of communications device technologies is directed to a duplexer and a communications system having the duplexer. The duplexer includes a body, where an input port and an output port are disposed on the body, a cavity is disposed on the body, a dielectric resonator is disposed in the cavity, the input port is connected to an input-end coupling plate disposed opposite to the dielectric resonator, the output port is connected to an output-end coupling plate disposed opposite to the dielectric resonator, a tuning screw is connected to the body, and a central axis of the dielectric resonator misaligns with a central axis of the cavity. The communications system includes the duplexer.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: March 27, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Sai-Wai Wong, Qingxin Chu, Yanzhao Zhou
  • Patent number: 9825623
    Abstract: The invention relates to a filter, for example, a switchable harmonic filter for the gigahertz range. A first line segment, which can comprise a radial stub leads away from a main line of the filter. A second line segment can be electrically connected to the first line segment. At least two electronically controllable switching elements are provided, by means of which the first and the second line segment can be connected.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 21, 2017
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventor: Simon Pippers
  • Patent number: 9786973
    Abstract: Techniques for implementing tunable lumped element filters with transmission line sections. Transmission lines sections are used to implement one or more inductive or capacitance component elements of the filter. The filter is tunable by changing the dielectric constants of the transmission lines. In particular implementations there is an individual transmission line section for each lumped element component of a filter. Different filter circuits may be combined to provide a universal tunable filter assembly.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: October 10, 2017
    Assignee: TDK Corporation
    Inventor: Bouchaib Cherif
  • Patent number: 9724461
    Abstract: A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: August 8, 2017
    Assignee: DEKA Products Limited Partnership
    Inventor: Larry B. Gray
  • Patent number: 9680197
    Abstract: A micro bandpass filter comprises a substrate, a first signal transmission member, a second signal transmission member and a resonator structure. The resonator structure includes a plurality of microstrip lines. The present invention realizes the function of a bandpass filter in a smaller area via curving the first signal transmission member, the second signal transmission member and the resonator structure.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 13, 2017
    Assignee: NATIONAL TSING HUA UNIVERSITY
    Inventors: Ta-Jen Yen, Ruei-han Jiang, Yu-Kai Wang, Tsung-Yu Huang
  • Patent number: 9673527
    Abstract: Various systems and methods are provided for folded patch antennas. In one embodiment, among others, a folded patch antenna includes a patch disposed on an outer side of a flexible substrate and a ground plane disposed on an inner side of the flexible substrate opposite the patch. The flexible substrate is folded to form an enclosed cavity defined by the inner side of the flexible substrate. The ground plane may provide electromagnetic interference (EMI) shielding of the cavity. In another embodiment, among others, a folded patch antenna platform includes a flexible substrate, a folded patch antenna, and a transceiver mounted on the flexible substrate. The folded patch antenna includes a patch communicatively coupled to the transceiver and a ground plane, which are disposed on opposite sides of the flexible substrate.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: June 6, 2017
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Yong-Kyu Yoon, Gloria Jung-a Kim, Xiaoyu Cheng
  • Patent number: 9431691
    Abstract: A suspended line resonator and a tunable filter comprising multiple suspended line resonators. A microstrip resonator and a tunable filter comprising multiple microstrip resonators. A suspended substrate resonator and a tunable filter comprising multiple suspended substrate resonators.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: August 30, 2016
    Assignee: M-TRON INDUSTRIES, INC.
    Inventors: Dexin Sun, Raleigh Benton Stelle, IV
  • Patent number: 9385785
    Abstract: A common communications device comprising an array of near-field coupled resonant elements, the elements each comprising a coupling portion comprising a loop portion with free ends, the device being provided in combination with a data transmission unit and a data reception unit, each unit having a coupling portion, the units being arranged to communicate with one another by means of the coupling portion of each unit and the common communications device, the coupling portion of the data transmission unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a first resonant element of the device, the coupling portion of the data reception unit comprising a resonant element comprising a loop portion arranged to be near-field coupled to the loop portion of a second resonant element of the device not being the first resonant element.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: July 5, 2016
    Inventors: David John Edwards, Christopher John Stevens, Laszlo Solymar, Ekaterina Shamonina
  • Patent number: 9343789
    Abstract: A method and device for a compact microstrip bandpass filter that includes an input terminal, an output terminal, a plurality of quarter-wavelength resonators, a resonant disk, a plurality of layers, and a microstrip line which connects the resonant disk to a joint point of the quarter-wavelength resonators. A method of forming two signal paths in a compact microstrip bandpass filter includes forming a first signal path between an input terminal and an output terminal of the filter with a plurality of quarter-wavelength resonators with a resonant disk and a microstrip line which connects the resonant disk to a joint point of the quarter-wavelength resonators. The method includes forming a second signal path of the quarter-wavelength resonators, the filter includes a plurality of layers.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: May 17, 2016
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Faxin Yu, Qin Zheng, Zhiyu Wang
  • Patent number: 9300273
    Abstract: The present invention relates to an active band stop filter comprising a filter input and a filter output which are linked by a transmission line LT, a resonator RE coupled to the transmission line and connectable to a load impedance. Between the resonator and the load impedance there is mounted a means of activation of the filtering function in a chosen operating band. The filter is useable in multistandard terminals.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: March 29, 2016
    Assignee: Thomson Licensing
    Inventors: Raafat Lababidi, Julien Lintignat, Dominique Lo Hine Tong, All Louzir, Bruno Barelaud, Bernard Jarry
  • Patent number: 9281283
    Abstract: Embodiments of semiconductor devices (e.g., RF devices) include a substrate, an isolation structure, an active device, a lead, and a circuit. The isolation structure is coupled to the substrate, and includes an opening. An active device area is defined by a portion of the substrate surface that is exposed through the opening. The active device is coupled to the substrate surface within the active device area. The circuit is electrically coupled between the active device and the lead. The circuit includes one or more elements positioned outside the active device area (e.g., physically coupled to the isolation structure and/or under the lead). The elements positioned outside the active device area may include elements of an envelope termination circuit and/or an impedance matching circuit. Embodiments also include method of manufacturing such semiconductor devices.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 8, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Lakshminarayan Viswanathan, Jeffrey K. Jones, Scott D. Marshall
  • Patent number: 9265879
    Abstract: A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: February 23, 2016
    Assignee: DEKA Products Limited Partnership
    Inventor: Larry B. Gray
  • Patent number: 9166640
    Abstract: An adjustable impedance matching network includes a first terminal, a second terminal, a reference potential terminal, a transmission line transformer with a first inductor path and a second inductor path. A semiconductor switching element is configured to bridge a sub-section of the first inductor path or the second inductor path to thereby adjust an inductance of the first inductor path or the second inductor path. According to an alternative embodiment, the impedance matching network includes a selector switch to selectively connect one of a plurality of inductor nodes with at least one of the first terminal and the second terminal. Further embodiments relate to an integrated circuit for adjustable impedance matching with a transmission line transformer formed by first and second inductor paths that are implemented as conductive paths at or in a substrate of the integrated circuit.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: October 20, 2015
    Assignee: Infineon Technologies AG
    Inventor: Winfried Bakalski
  • Publication number: 20150028970
    Abstract: A tunable superconducting circuit includes a first charge island, a second charge island, a third charge island, a fourth charge island, a first junction loop electrically coupled to the first and third charge islands, a second junction loop coupled to the second and third charge islands and a third junction loop coupled to the third and fourth charge islands, wherein the first, second and third junction loops are tuned in frequency to operate together as a qubit.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 29, 2015
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jerry M. Chow, Antonio D. Corcoles Gonzalez, Jay M. Gambetta, Matthias Steffen
  • Patent number: 8922294
    Abstract: An RF filter comprises a signal transmission path having an input and an output, a plurality of resonant elements disposed along the signal transmission path between the input and the output, and a plurality of non-resonant elements coupling the resonant elements together to form a stop band having a plurality of transmission zeroes corresponding to respective frequencies of the resonant elements, and at least one sub-band between the transmission zeroes. The non-resonant elements comprise at least one variable non-resonant element for selectively introducing at least one reflection zero within the stop band to create a pass band in a selected one of the sub-band(s). The RF filter further comprises an electrical controller configured for receiving an operating temperature, and adjusting the variable non-resonant element(s) based on the received operating temperature, thereby selectively moving the reflection zero(es) along the stop band to move the pass band within the selected sub-band.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 30, 2014
    Assignee: Resonant Inc.
    Inventors: Genichi Tsuzuki, Balam A. Willemsen
  • Patent number: 8922305
    Abstract: A microstrip combline bandpass filter includes an input port, an output port, and a plurality of resonators each including a microstrip line having a first end and a second end. One of the plurality of resonators is connected to the input port, and another of the plurality of resonators is connected to the output port. The filter also includes a plurality of pairs of series coupled varactors. The first end of each microstrip line is coupled to one of the pairs of varactors, and the second end of each microstrip line is coupled to ground.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 30, 2014
    Assignee: Hittite Microwave Corporation
    Inventor: Ekrem Oran
  • Patent number: 8912868
    Abstract: A bandstop filter configured to suppress a spurious resonance frequency includes a resonator and a transmission line that is coupled to the resonator at a first junction and at a second junction with a length ? of transmission line running between the two couplings. The configuration provides two signal paths so that constructive interference occurs at the spurious resonance, and destructive interference occurs at a fundamental bandstop frequency. This provides spurious suppression by effectively cancelling out resonator couplings via the constructive interference, extending the upper passband of the bandstop filter to any degree required by the application.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: December 16, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventor: Andrew C. Guyette
  • Publication number: 20140340176
    Abstract: A microstrip combline bandpass filter includes an input port, an output port, and a plurality of resonators each including a microstrip line having a first end and a second end. One of the plurality of resonators is connected to the input port, and another of the plurality of resonators is connected to the output port. The filter also includes a plurality of pairs of series coupled varactors. The first end of each microstrip line is coupled to one of the pairs of varactors, and the second end of each microstrip line is coupled to ground.
    Type: Application
    Filed: August 1, 2014
    Publication date: November 20, 2014
    Inventor: Ekrem Oran
  • Patent number: 8797120
    Abstract: A tunable RF filter comprises a signal transmission path having an input and output, a plurality of resonant elements disposed along the signal transmission path between the input and output, and a set of non-resonant elements coupling the resonant elements together to form a stop band having a plurality of transmission zeroes corresponding to respective frequencies of the resonant elements, and at least one sub-band between the transmission zeroes. The set of non-resonant elements comprises a first plurality of non-resonant elements respectively coupled in parallel with the resonant elements, and a second plurality of non-resonant elements respectively coupled in series with the resonant elements. The first plurality of non-resonant elements comprises at least one variable non-resonant element for selectively introducing at least one reflection zero within the stop band to create a pass band in one of the one sub-band(s) without varying any of the second plurality of non-resonant elements.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: August 5, 2014
    Assignee: Resonant LLC
    Inventors: Genichi Tsuzuki, Balam A. Willemsen
  • Patent number: 8773223
    Abstract: A switch is replaced with a parallel resonant circuit 4. More specifically, a variable resonator includes a line part 1 that includes one or more lines and has an annular shape, at least two parallel resonant circuits 4 capable of changing a characteristic, and at least three variable reactance blocks 2 capable of changing a reactance value, in which the parallel resonant circuits 4 are electrically connected to the line part 1 at one end thereof at different positions on the line part 1, and the variable reactance blocks 2 are electrically connected to the line part 1 at predetermined intervals based on an electrical length at a resonance frequency.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: July 8, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Patent number: 8766739
    Abstract: A microwave frequency tunable filtering balun is provided. The microwave frequency tunable filtering balun comprises a first microwave split ring transmission line resonator and a second microwave split ring transmission line resonator arranged in a bilaterally symmetrical manner, a fourth variable capacitor and a fifth variable capacitor of same parameters. It combines two functions of balun and tunable bandpass filter (BPF) into one circuit, resulting in a compact design. The balun characteristic and frequency-tuning mechanism are investigated, and the design equations are derived.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: July 1, 2014
    Assignee: Nantong University
    Inventors: Jian Xin Chen, Hui Tang, Li Heng Zhou, Jin Shi, Zhi Hua Bao
  • Publication number: 20140176263
    Abstract: A tunable filter comprises at least two resonator circuits placed between two matching networks characterized in that: one resonator is connected at a first of its ends to the ground plane M of the filter by metallized holes and at a second end to a MEMS network; the distance between the two resonators forms an inter-resonator inductive coupling circuit; an inter-resonator coupling capacitor is formed by two etched lines connected to the first and second resonators; the MEMS networks are distributed around the ends of the resonators; the MEMS networks are connected between the first and second resonator and the ground plane M by means of metallized holes; and the filter comprises a number of independent electrical control voltages designed to actuate the MEMS.
    Type: Application
    Filed: December 22, 2011
    Publication date: June 26, 2014
    Applicant: THALES
    Inventors: Michel Giraudo, Marie-Pierre Dussauvy, Gilles Neveu
  • Patent number: 8760243
    Abstract: Tunable bandpass filters are provided. In one embodiment, the invention relates to a tunable bandpass filter including a dielectric substrate having a first surface opposite to a second surface, a conductive ground plane disposed on the first surface, a microstrip conductive trace pattern disposed on the second surface, the trace pattern defining a phase velocity compensation transmission line section including a series of spaced alternating T-shaped conductor portions, at least one varactor diode coupled to a first T-shaped conductor portion of the series of T-shaped conductor portions and to the conductive ground plane, and bias control circuitry coupled to the first T-shaped conductor portion, wherein the bias control circuitry is configured to control the at least one varactor diode.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: June 24, 2014
    Assignee: Raytheon Company
    Inventor: Tamrat Akale
  • Patent number: 8760244
    Abstract: A variable resonator includes a first transmission line 101, a second transmission line 102 and a plurality of switch circuits 150. The electrical length of the first transmission line 101 is equal to the electrical length of the second transmission line 102. The characteristic impedance for the even mode of the first transmission line 101 is equal to the characteristic impedance for the even mode of the second transmission line 102. The characteristic impedance for the odd mode of the first transmission line 101 is equal to the characteristic impedance for the odd mode of the second transmission line 102. Each switch circuit 150 is connected to any of the first transmission line 101 and the second transmission line 102, and one of the switch circuits 150 is turned on.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: June 24, 2014
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Patent number: 8749323
    Abstract: Provided are a band stop filter of a CRLH structure and a manufacturing method thereof. A band stop filter of a CRLH structure according to an exemplary embodiment of the present invention includes a microstrip transmission line formed on a substrate; a right handed material (RHM) region including a first stub and a first capacitor connected to the microstrip transmission line in parallel and stopping a signal of a first frequency band passing through the microstrip transmission line; and a left handed material (LHM) region further provided between the first stub and the first capacitor to block a signal of a second frequency band passing through the microstrip transmission line.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: June 10, 2014
    Assignees: Electronics and Telecommunications Research Institute, Soongsil University Research Consortium Techno-Park
    Inventors: Seung Back Jung, Seung In Yang
  • Publication number: 20140097915
    Abstract: A filter includes a substrate; a signal line formed on the substrate and including an input terminal and an output terminal at either end of the signal line; and a first pair of resonant lines connected between the signal line and a ground portion, wherein the first pair of resonant lines are connected to the signal line at the same point.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 10, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Xiaoyu Mi, Satoshi Ueda, Osamu Toyoda
  • Patent number: 8674792
    Abstract: A metamaterial comprises a support medium, such as a planar dielectric substrate and a plurality of resonant circuits supported thereby. At least one resonant circuit is a tunable resonant circuit including a conducting pattern and a tunable material, so that an electromagnetic parameter (such as resonance frequency) may be adjusted using an electrical control signal applied to the tunable material.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: March 18, 2014
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Serdar H. Yonak, Frederick W. Mau, II, Vinh N. Nguyen
  • Publication number: 20140062620
    Abstract: A suspended line resonator and a tunable filter comprising multiple suspended line resonators. A microstrip resonator and a tunable filter comprising multiple microstrip resonators. A suspended substrate resonator and a tunable filter comprising multiple suspended substrate resonators.
    Type: Application
    Filed: May 20, 2011
    Publication date: March 6, 2014
    Applicant: TRILITHIC, INC.
    Inventors: Dexin Sun, Raleigh Benton Stelle, IV
  • Patent number: 8665040
    Abstract: A field programmable filter array with high spectral isolation and reconfigurability. A bank of resonators can be programmed at will and on the fly to give any type of filtering response. The order, type and bandwidth of the filter are electronically reconfigured. Each subset of resonators can switch between bandstop and bandpass configurations and form custom filter shapes consisting of combinations of bandstop and bandpass filters. The filter can include a unit cell of a resonator with a series of switches to enable coupling to any of its nearest neighbors. The path in which the flow of energy takes through the array of resonators is dynamic, and the filtering function which is created is dialable on demand.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 4, 2014
    Assignee: Purdue Research Foundation
    Inventors: William J. Chappell, Dimitrios Peroulis, JuSeop Lee, Eric J. Naglich, Hjalti H. Sigmarsson
  • Patent number: 8643450
    Abstract: A variable distributed constant line includes a substrate, a signal line that is provided on the substrate, and includes a first line portion and a second line portion facing each other, a movable electrode that is provided above the substrate, and straddles both the first line portion and the second line portion in a manner to face the first line portion and the second line portion, and a driving electrode that is provided on the substrate in a manner to face the movable electrode, attracts the movable electrode by an action of a voltage applied between the driving electrode and the movable electrode, and changes a distance between the signal line and the movable electrode.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: February 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Xiaoyu Mi, Osamu Toyoda, Satoshi Ueda
  • Patent number: 8581677
    Abstract: A variable resonator includes a ring-shaped conductor line (2) which is provided on a dielectric substrate (5) and has a circumferential length of a wavelength at a resonance frequency or an integral multiple of the wavelength, and at least two circuit switches (31, 32), wherein the circuit switches (31, 32) have one ends (31) electrically connected to the ring-shaped conductor line (2) and the other ends (32) electrically connected to a ground conductor (4) formed on the dielectric substrate (5), electrical connection/disconnection between the ground conductor (4) and ring-shaped conductor line (2) can be switched, and the one ends (31) of the circuit switches (31, 32) are connected to the ring-shaped conductor line (2) on different portions.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: November 12, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Publication number: 20130293321
    Abstract: The present invention relates to an active band stop filter comprising a filter input and a filter output which are linked by a transmission line LT, a resonator RE coupled to the transmission line and connectable to a load impedance. Between the resonator and the load impedance there is mounted a means of activation of the filtering function in a chosen operating band. The filter is useable in multistandard terminals.
    Type: Application
    Filed: March 11, 2011
    Publication date: November 7, 2013
    Applicant: Thomson Licensung
    Inventors: Raafat Lababidi, Julien Lintignat, Dominique Lo Hine Tong, All Louzir, Bruno Barelaud, Bernard Jarry
  • Patent number: 8576027
    Abstract: A filter is provided with a multilayer board incorporating a resonator formed by two ground plates opposed to each other and conductive side walls connected to the ground plates; two signal vias provided through the resonator; and two terminals connected to the signal vias to receive a pair of signals. The resonator has a first face of symmetry vertical to the ground plates. The signal vias are disposed symmetrically with respect to the first face of symmetry on a distance from the first face of symmetry.
    Type: Grant
    Filed: December 25, 2007
    Date of Patent: November 5, 2013
    Assignee: NEC Corporation
    Inventor: Taras Kushta
  • Patent number: 8564384
    Abstract: A variable resonator that comprises a loop line (902) to which two or more switches (903) are connected and N of reactance circuits (102) (N?3), in which switches (903) are severally connected to different positions on the loop line (902), the other ends of the switches are severally connected to a ground conductor, and the switches are capable of switching electrical connection/non-connection between the ground conductor and the loop line (902), the reactance circuits (102) severally have the same reactance value, the loop line (902) has a circumference corresponding to one wavelength or integral multiple thereof at a resonance frequency corresponding to each reactance value of each reactance circuit, and the reactance circuits (102) are electrically connected to the loop line (902) as branching circuits along the circumference direction of the loop line (902) at equal electrical length intervals.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: October 22, 2013
    Assignee: NTT DoCoMo, Inc.
    Inventors: Kunihiro Kawai, Hiroshi Okazaki, Shoichi Narahashi
  • Patent number: 8508318
    Abstract: A stop band or a pass band is generated in a transmission line filter by providing a plurality of dielectric bodies having a periodic structure in the length direction of the transmission line filter and causing Bragg reflection of transmission wave. A voltage is applied to some or all of the dielectric bodies and the frequency of the stop band or the pass band is changed or controlled by adjusting the voltage.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: August 13, 2013
    Assignee: NEC Corporation
    Inventor: Mizuki Iwanami
  • Publication number: 20130200962
    Abstract: A triangular patch resonator with a triangle pattern (30), two sides of the triangle symmetrical with respect to an axis being respectively associated with an input coupler and an output coupler, including slots in the form of a three-branch star, a first slot (41) extending along said axis, on either side of the centre of the triangle, the two other slots (42, 43) extending symmetrically from the base of the first slot, none of the branches opening out to the outside, an adjustable capacitor (51-53) being connected across each of the slots.
    Type: Application
    Filed: June 1, 2011
    Publication date: August 8, 2013
    Applicant: UNIVERSITE JOSEPH FOURIER
    Inventors: Ariana Serrano, Philippe Ferrari, Fatima Correra, Tân-Phu Vuong
  • Publication number: 20130200959
    Abstract: A microwave frequency tunable filtering balun is provided. The microwave frequency tunable filtering balun comprises a first microwave split ring transmission line resonator and a second microwave split ring transmission line resonator arranged in a bilaterally symmetrical manner, a fourth variable capacitor and a fifth variable capacitor of same parameters. It combines two functions of balun and tunable bandpass filter (BPF) into one circuit, resulting in a compact design. The balun characteristic and frequency-tuning mechanism are investigated, and the design equations are derived.
    Type: Application
    Filed: May 30, 2012
    Publication date: August 8, 2013
    Inventors: Jian Xin CHEN, Hui TANG, Li Heng ZHOU, Jin SHI, Zhi Hua BAO