Nonreciprocal Gyromagnetic Type (e.g., Circulators) Patents (Class 333/1.1)
  • Patent number: 10431865
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: October 1, 2019
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10431864
    Abstract: The present surface mount technology non-reciprocal circuit element (1) includes a ferromagnetic material (14) placed above a circuit board (11), and a conductor cover (13). The conductor cover (13) is composed of a main unit (12) located above the ferromagnetic material (14) and connecting members (17_1, 17_2, 17_3) for electrically connecting the main unit (12) with transmission lines (18_1, 18_2, 18_3) on the circuit board (11), respectively. The ferromagnetic material (14) and at least one of the connecting members (17_1, 17_2, 17_3) are formed so as to create, in at least one of gaps between the side surface of the ferromagnetic material (14) and each of the connecting members (17_1, 17_2, 17_3), a location where a clearance between a side surface of the ferromagnetic material (14) and the connecting member is a first clearance and a location where it is a second clearance different from the first clearance.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: October 1, 2019
    Assignee: NEC CORPORATION
    Inventor: Yusuke Kimata
  • Patent number: 10411321
    Abstract: A superconducting circulator device may be provided. The superconducting circulator device comprises more than two resonators of equal static resonance frequency chained to a ring system by strong coupling. Each of the resonators comprises an adjustable inductor built into the each one of the resonators. The device comprises also a set of ports, each one of the ports coupled to a corresponding one of the more than two resonators, a set of modulators, each one of the modulators positioned adjacently to a corresponding one of the adjustable inductor, and a set of modulation control ports. Each of the modulation control ports is connected to a corresponding modulator of the set of modulators such that each of the modulation control ports controls the related static resonance frequency of the related resonators and such that the ring system is modulatable.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: September 10, 2019
    Assignee: International Business Machines Corporation
    Inventor: Peter Mueller
  • Patent number: 10403950
    Abstract: An approach to modifying bias in a circulator to prevent higher order modes that involves the use of features positioned near the ferrite material of the circulator. The ferrite bias in the perimeter of the ferrite material is modified by the adjacent features such that higher order modes cannot be sustained. The features may include scallops that create a non-uniform magnetic field towards the perimeter of the ferrite while leaving the field near-uniform in the center where the fundamental circulator mode primarily resides. Alternatively, slots may be placed in the magnetically conductive housing bottom in the region of the edge of the ferrite material to prevent higher order modes.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 3, 2019
    Assignee: ANAREN, INC.
    Inventor: Niels Kirkeby
  • Patent number: 10392716
    Abstract: An electrochemical cell that generates hydrogen has an anode including an electrochemically oxidizable substance and an electrode designed for hydrogen generation as a cathode and an aqueous alkaline electrolyte. The anode and the cathode are designed such that the hydrogen generation begins at the cathode as soon the anode and the cathode are electrically connected to one another. At least one resistance foil is adhesively bonded to at least one outer side of the housing which, when it is connected as a load resistance between the anode and the cathode, reduces the current flow between the anode and the cathode and therefore also the gas generation rate.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 27, 2019
    Assignee: VARTA Microbattery GmbH
    Inventors: Bernd Kreidler, Bernd Schweinstetter, Uwe Voigt
  • Patent number: 10374275
    Abstract: A circulator plate for a microwave radio system is disclosed. The circulator plate includes a circulator including a first port, a second port, and a third port; a first isolator including an input port and an output port; a second isolator including an input port and an output port; and a splitter including an input port, a first output port, and a second output port. The output port of the first isolator is coupled to the first port of the circulator. The input port of the second isolator is coupled to the third port of the circulator. The input port of the splitter is coupled to the output port of the second isolator. The first output port of the splitter is configured to be coupled to a first receiver. The second output port of the splitter is configured to be coupled to a second receiver.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 6, 2019
    Assignee: ZTE CORPORATION
    Inventors: Ying Shen, Edwin Nealis, Zhiping Feng, Zhuo Li, Shawn Walsh, Thanh H. Nguyen
  • Patent number: 10364511
    Abstract: A system for incorporating ferromagnetic materials into several microwave application is described. The system employs a multi-layer substrate. A substrate for receiving microwave signals uses a base layer which has tunable elements and a nanofiber layer which uses magnetic nanotubes. The nanofibers have a high aspect ratio and the nanofiber layer is embedded in the base layer.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: July 30, 2019
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Xing Chen, Ziyao Zhou
  • Patent number: 10340081
    Abstract: A ceramic capacitor which is low in ESL and suitable for being built into a substrate includes a first external electrode, a second external electrode and a third external electrode. Each of the first, second and third external electrodes include a sputtering electrode film. Each of the outermost layers of the first, second and third external electrodes contains Cu.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yuichiro Tanaka
  • Patent number: 10333192
    Abstract: A microstrip circulator includes a carrier and a ferrite slab having a first side and a second side. The circulator further includes a first microwave epoxy positioned between the carrier and the first side of the ferrite slab. The circulator further includes a conductor having a center portion with three legs extending therefrom. The circulator further includes a second microwave epoxy positioned between the second side of the ferrite slab and the conductor. The circulator further includes an insulator and a third microwave epoxy positioned between the conductor and the insulator. The circulator further includes a magnet and a fourth epoxy positioned between the insulator and the magnet.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: June 25, 2019
    Assignee: SMITHS INTERCONNECT, INC.
    Inventors: James P. Kingston, Jose Gil, David E. Barry
  • Patent number: 10333046
    Abstract: A technique relates to a superconducting device. A gyrator includes a first mixing device coupled to a second mixing device. A lumped-element resistor is connected in parallel to the gyrator.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: June 25, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Patent number: 10320084
    Abstract: Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are complementary metamaterial elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: June 11, 2019
    Inventors: Adam Bily, Anna K. Boardman, Russell J. Hannigan, John Desmond Hunt, Nathan Kundtz, David R. Nash, Ryan Allan Stevenson, Philip A. Sullivan
  • Patent number: 10305161
    Abstract: A dual stacked stripline circulator includes multiple composite ferrite discs, each having an inner portion and an outer portion; a first substrate having an edge with a first composite ferrite disc disposed in the first substrate; a second substrate having an edge with a second composite ferrite disc disposed in the second substrate; a third substrate having an edge with a third composite ferrite disc disposed in the third substrate, the third substrate disposed adjacent the second substrate; a fourth substrate having an edge with a fourth composite ferrite disc disposed in the fourth substrate; a first pattern defining three ports of a first three-port circulator disposed between the first substrate and the second substrate; a second pattern defining three ports of a second three-port circulator disposed between the third substrate and the fourth substrate; and a metal film encircling the edge of the first, second, third and fourth substrate.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 28, 2019
    Assignee: RAYTHEON COMPANY
    Inventors: James A. Carr, Mark B. Hanna
  • Patent number: 10270149
    Abstract: There is provided a circulator device. The circulator device comprises two magnet-free circulators. Each magnet-free circulator has a forced time variance. The circulator device comprises ports. The two circulators are in the circulator device arranged to have mutually anti-phase time variance. Each of the two circulators is coupled to all of the ports. There is also presented an isolator device comprising such a circulator device. There is also presented a radio transceiver device comprising such a circulator device or isolator device.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 23, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rui Hou, Lars Ridell Virtanen
  • Patent number: 10259072
    Abstract: A method for forming a component includes providing a first layer of a mixture of first and second powders. The method includes determining the frequency of an alternating magnetic field to induce eddy currents sufficient to bulk heat only one of the first and second powders. The alternating magnetic field is applied at the determined frequency to a portion of the first layer of the mixture using a flux concentrator. Exposure to the magnetic field changes the phase of at least a portion of the first powder to liquid. A change in power transferred to the powder during a phase change in the powder is calculated to determine the quality of component formation.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: April 16, 2019
    Assignee: Grid Logic Incorporated
    Inventor: Matthew J. Holcomb
  • Patent number: 10263572
    Abstract: A radio frequency (RF) transmitter apparatus and method are provided with dual variable impedance components. Included is at least one RF transmitter with a power amplifier and a filter. Further, a first variable impedance component is in electrical communication between the filter and an antenna port. Also included is a second variable impedance component in electrical communication between the power amplifier and the filter.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: April 16, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventor: Simon Hamparian
  • Patent number: 10135476
    Abstract: An electronic device includes an antenna configured to receive a wireless transmission. The wireless transmission includes noise and data to be received. The electronic device includes a signal splitter that splits the wireless transmission into a first signal and a second signal. The electronic device includes a filter configured to filter the data to be received in the first signal. Furthermore, the electronic device includes merging circuitry configured to subtract the first signal from the second signal to reduce the noise in the second signal.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: November 20, 2018
    Assignee: APPLE INC.
    Inventors: Mohammad Reza Ghajar, Huanyu Chen, Robert S. Sorensen
  • Patent number: 10135469
    Abstract: Improved switched multiplexer architecture for supporting carrier aggregation in front-end applications. In some embodiments, an N-plexing system can include an assembly of filters configured to provide N filtered paths, and a switching circuit in communication with the assembly of filters. The switching circuit can be configured to provide a plurality of switchable paths between the assembly of filters and an antenna port to allow simultaneous operation between the N filtered paths and the antenna port. In some embodiments, N can be 4 for a quadruplexing system or 2 for a duplexing system, and such a system can be implemented in a front-end module (FEM) for wireless devices.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: November 20, 2018
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Shiaw Wen Chang, Brian Blu Duverneay, Sarah Shiui Xu, David Richard Pehlke
  • Patent number: 10116029
    Abstract: A passive circulator utilizing sequentially-switched delay lines (SSDL) in which delay line sections are sequentially turned on and off to achieve non-reciprocity to provide rejection/separations between different signals at the same/similar frequency, such as between a transmitted and received signal. The circulator is well-suited for on-chip integration and can be utilized across a wide frequency range. Various embodiments are described for separating signal waveforms.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: October 30, 2018
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventor: Yuanxun Ethan Wang
  • Patent number: 10096879
    Abstract: A circulator is provided, comprising, first second and third conductors forming three equally spaced junctions and a permanent magnet configured to apply a shaped bias magnetic field to a ferrite resonator in operable communication with the first, second, and third conductors. The permanent magnet comprises a substantially planar monolithic structure having defined thereon at least first and second substantially concentric regions having first and second respective magnetic field strength levels, wherein the second magnetic field strength level is lower than the first magnetic field strength level. The first and second magnetic field strength levels are configured to cooperate to shape an external bias magnetic field of the permanent magnet to counteract at least a portion of a demagnetizing effect resulting from of an overall shape of the ferrite resonator, to achieve a substantially uniform internal magnetic bias within at least a portion of the ferrite resonator.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: October 9, 2018
    Assignee: Raytheon Company
    Inventors: Sankerlingam Rajendran, James A. Carr, Cary C. Kyhl, Karl L. Worthen
  • Patent number: 10096882
    Abstract: A duplexer according to the present invention includes a transmission-side terminal, a reception-side terminal, a common terminal, a transmission-side circuit unit, and a reception-side circuit unit. Here, the transmission-side circuit unit is connected between the transmission-side terminal and the common terminal. The reception-side circuit unit is connected between the common terminal and the reception-side terminal. The transmission-side circuit unit includes a first transmission-side filter, a second transmission-side filter, and a transmission-side directional propagation circuit. Here, the first transmission-side filter is provided in the subsequent stage of the transmission-side terminal. The second transmission-side filter is provided in a stage subsequent to the first transmission-side filter. The transmission-side directional propagation circuit is connected between the first transmission-side filter and the second transmission-side filter.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 9, 2018
    Assignee: NEC Corporation
    Inventor: Yoji Murao
  • Patent number: 10090989
    Abstract: The present application describes a computer-implemented method for configuring a front end including receiving a first signal and a second signal containing interference; characterizing the receive channel using the first tone; processing the compensated first signal using an infinite impulse response filter based on the characterized receive channel to generate an interference cancelling signal; and coupling the interference cancelling signal to the second signal to generate an interference cancelled receive signal. The present application also describes a computer-implemented apparatus for a front end.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 2, 2018
    Assignee: LGS Innovations LLC
    Inventors: Riley Nelson Pack, Alan Scott Brannon, Benjamin Joseph Baker
  • Patent number: 10062829
    Abstract: A technique relates to a superconducting device. A gyrator includes a first mixing device coupled to a second mixing device. A lumped-element resistor is connected in parallel to the gyrator.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: August 28, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Baleegh Abdo
  • Patent number: 10056936
    Abstract: A front end circuit includes a circulator having a first port into which a transmission signal is input, a second port into/from which a transmission/reception signal is input/output, and a third port from which a reception signal is output. The impedance of the second port of the circulator is set to a value different from the impedance value of the first port and the third port. With his configuration, the narrowing of a frequency band and the increase in loss, which occur when an impedance matching circuit is additionally provided, are prevented.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 21, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kengo Onaka, Katsuhito Kuroda, Yuki Nakaike, Reiji Nakajima
  • Patent number: 10050324
    Abstract: A wide band radio frequency (RF) circulator is presented. The RF circulator includes at least one stage having four ports configured to circulate an input RF signal from a first port to a second port while isolating a third port, from the second port to the third port while isolating the first port, and from the third port to the first port while isolating the first port, wherein the fourth port is grounded; and wherein the at least one stage includes at least a pair of couplers connected via a delay line, wherein each coupler includes a main transmission line and a coupling transmission line disposed on distinct dielectric layers.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: August 14, 2018
    Assignee: Eagantu Ltd.
    Inventors: Michael Dakhiya, Eran Shaked
  • Patent number: 10033350
    Abstract: A tunable duplexer is specified is disclosed. In an embodiment, the duplexer includes a transmission port, a reception port, a common port and a core having a first inductive element and a second inductive element. The duplexer further includes a first signal path electrically connecting the transmission port to the core, a second signal path electrically connecting the reception port to the core and a third signal path electrically connecting the common port to the core. A first tunable capacitive element electrically connects the first signal path to ground and a second tunable capacitive element electrically connects the second signal path to ground, wherein the first inductive element and the second inductive element are inductively and conductively coupled to one another.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: July 24, 2018
    Assignee: SnapTrack, Inc.
    Inventor: Edgar Schmidhammer
  • Patent number: 10033079
    Abstract: In a non-reciprocal circuit element, electric power handling capability is improved, and leakage power between adjacent channels is reduced. In addition, balance is taken between reduction of noise between adjacent ports and an increase in insertion loss. A non-reciprocal circuit element includes a YIG ferrite (10) and a plurality of conductors (15) disposed on the YIG ferrite (10) and intersecting each other in an insulated state. A part of Y of the YIG ferrite (10) is substituted with at least any one element of Ho, Dy, and Gd, or a part of Fe of the YIG ferrite (10) is substituted with Co.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: July 24, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yuki Nakaike, Kenji Matsuda, Yuko Fujita
  • Patent number: 10027008
    Abstract: An irreversible circuit element includes first and second high pass isolators each including first and second center electrodes intersecting with and being insulated from each other on a ferrite to which a direct-current magnetic field is applied with a permanent magnet. One end of the first center electrode is an output port and the other end thereof is an input port, and one end of the second center electrode is another output port and the other end thereof is a ground port. A pass frequency band of the first isolator is higher than a pass frequency band of the second isolator. Respective output portions of the first and second isolators are electrically connected and defined as one output terminal, and a low pass filter LPF is inserted between the output terminal and the output port of the second isolator.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: July 17, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takaya Wada, Yoshiki Yamada
  • Patent number: 9954265
    Abstract: An antenna coupling device is disclosed. The device includes a first isolator that includes an input port and an output port and a first circulator that includes a first port, a second port, and a third port. The first port of the first circulator is coupled with the output port of the first isolator; and the second port of the first circulator is configured for coupling with a first antenna. The device also includes a second isolator that includes an input port and an output port. The input port of the second isolator is coupled with the third port of the first circulator.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: April 24, 2018
    Assignee: ZTE CORPORATION
    Inventors: Ying Shen, Edwin John Nealis, Zhuo Li, Zhiping Feng, Thanh Hung Nguyen
  • Patent number: 9954266
    Abstract: Communication device comprising a stripline circulator and at least a coupling piece. The stripline circulator comprises: magnetic assemblies comprising a first magnetic assembly and a second magnetic assembly, the first magnetic assembly and the second magnetic assembly are opposite to each other so as to generate a magnetic field; and a conductive jointing piece positioned between the first magnetic assembly and the second magnetic assembly, the conductive jointing piece comprises a center conductor which is positioned within outer peripheral edges of the magnetic assemblies and positioned in the magnetic field and at least three line connecting arms which extend outwardly from the center conductor.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: April 24, 2018
    Assignee: Molex, LLC
    Inventors: Nikolay Volobuev, Xiaoma Jiang, Wenzhe Ye
  • Patent number: 9935351
    Abstract: Disclosed are embodiments of isolator/circulator junctions that can be used for radio-frequency (RF) applications, and methods of manufacturing the junctions. The junctions can have excellent impedance matching, even as they are being miniaturized, providing significant advantages over previously used junctions. The junctions can be formed of both high and low dielectric constant material.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: April 3, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Bowie Cruickshank, Michael David Hill, Iain Alexander MacFarlane
  • Patent number: 9912028
    Abstract: A wide band radio frequency (RF) circulator is presented. The RF circulator includes at least one stage having four ports, a first end, and a second end, wherein a first port and a third port are connected at the first end of the at least one stage, wherein a second port and a fourth port are connected at the second end of the at least one stage, wherein each of the at least one stage includes a pair of couplers connected through a first delay line and a second delay line, thereby forming a network of couplers in the at least one stage.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: March 6, 2018
    Assignee: Eagantu Ltd.
    Inventors: Michael Dakhiya, Eran Shaked
  • Patent number: 9899717
    Abstract: A stacked stripline circulator includes a first ferrite disc, a second ferrite disc, a first substrate having a metalized edge with the first ferrite disc disposed in the first substrate, a second substrate having a metalized edge with the second ferrite disc disposed in the second substrate, a first metalized pattern defining ports of a circulator disposed on the first substrate, the first metalized pattern comprising copper, a second metalized pattern defining ports of a circulator disposed on the second substrate, the second metalized pattern comprising copper, and a bonding ring bonding the metalized edge of the first substrate with the metalized edge of the second substrate.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: February 20, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: John M. Bedinger, Sankerlingam Rajendran
  • Patent number: 9887684
    Abstract: An isolator includes a core isolator, a main substrate and a circuit-defining section. The main substrate includes a first wiring portion, a second wiring portion and a third wiring portion and has the core isolator and the circuit-defining section mounted thereon. An input port of the core isolator is connected to the first wiring portion. An output port of the core isolator is connected to the second wiring portion. A ground port of the core isolator is connected to the third wiring portion. In the circuit-defining section, a conductor pattern includes a capacitor that is connected in parallel with the core isolator via the first wiring portion and the second wiring portion, and an impedance element that is connected to at least either of the first wiring portion and the second wiring portion.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: February 6, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazutaka Mukaiyama, Kenji Saito, Takaya Wada, Reiji Nakajima, Shingo Yanagihara
  • Patent number: 9887713
    Abstract: Provided is an intermediate frequency (IF) filter of a repeater for a mobile communication system that enables the use of a normal cyclic prefix (CP) of 4.7 usec as much as possible by minimizing a delay caused by the IF filter of a radio frequency (RF) repeater for the mobile communication system, such as a long-term evolution (LTE) orthogonal frequency-division multiple access (OFDMA) system.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: February 6, 2018
    Assignee: KISAN TELECOM CO., LTD.
    Inventors: Gyu-Yong Kim, Young-Woan Ahn, Kyoung-Jae Lee, Duck-Ho Jin, Sung-Hyun Kim, Kyu-Ho Yang
  • Patent number: 9859602
    Abstract: Disclosed herein is a non-reciprocal circuit device includes: a first substrates including a magnetic plate having a circular surface and a dielectric ring having an annular surface, the circular surface and the annular surface being substantially coplanar; a second substrate; a center conductor provided between the first substrate and the second substrate; and a permanent magnet that applies a magnetic field to the center conductor. The center conductor includes: a main conductor portion positioned on a straight line extending from a center of the circular surface to an outer periphery of the annular surface; and a protrusion portion having a width smaller than a width of the main conductor portion, and wherein at least a part of the protruding portion is positioned on the annular surface.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: January 2, 2018
    Assignee: TDK CORPORATION
    Inventors: Hideyuki Sasaki, Minoru Sakai
  • Patent number: 9847577
    Abstract: Disclosed are a ferrite green sheet comprising a pattern formed in a top surface of the ferrite green sheet, a sintered ferrite sheet, a ferrite composite sheet comprising the same, and a conductive loop antenna module. The pattern comprises a plurality of grooves, each groove has a width W and a rounded shape bottom having a radius of curvature of R, wherein a ratio of W to R (W:R) is in the range of 1:0.1 to 1:0.5.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: December 19, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Eun-Kwang Hur, Jung-Ju Suh, Seungah Cho, Suk-Won Choi
  • Patent number: 9799955
    Abstract: A ferrite controller includes a single array of two or more ferrite control elements. The ferrite control elements each include a radio frequency (RF) path assembly that includes a RF path ferrite element and a RF path dielectric element. The ferrite control elements also include a magnetizing ferrite assembly that includes a magnetizing ferrite element; one or more structural dielectric elements; and a flexible insulated waveguide wall. The magnetizing ferrite element is attached to the one or more structural dielectric elements, wherein the flexible insulated waveguide wall surrounds the magnetizing ferrite element and the structural dielectric elements, wherein the RF path ferrite element and the magnetizing ferrite element are attached to form a ferrite toroid. The ferrite control elements also include two tapered impedance matching transformers attached to the RF path assembly and the magnetizing ferrite assembly.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: October 24, 2017
    Assignee: Honeywell International Inc.
    Inventor: Michael Koster
  • Patent number: 9793037
    Abstract: Apparatus and methods related to ferrite based circulators are disclosed. A ferrite disk used in a circulator can be configured to reduce intermodulation distortion when routing radio-frequency signals having closely spaced frequencies. Such a reduction in intermodulation distortion can be achieved by adjusting magnetization at the edge portion of the ferrite disk. By way of an example, a ferrite disk with a reduced saturation magnetization (4PiMs) edge portion can reduce intermodulation distortion. Example configurations with such a reduced 4PiMs edge portions are disclosed.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: October 17, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Bowie Cruickshank, Brian Murray
  • Patent number: 9786971
    Abstract: Systems and methods for ferrite redundancy switch networks are disclosed. In one embodiment, a redundant ferrite switch system comprises: a first plurality of circulator modules, a second plurality of circulator modules, and a plurality of components coupled to the first plurality of circulator modules and coupled to the second plurality of circulator modules, wherein the first plurality of circulator modules and the second plurality of circulator modules is able to route a path through the redundant ferrite switch system when more than two components in the plurality of components have failed. The first plurality of circulator modules and the second plurality of circulator modules each comprise, respectively: a plurality of inputs; a plurality of outputs; and a plurality of circulators connecting the plurality of inputs to the plurality of outputs.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: October 10, 2017
    Assignee: Honeywell International Inc.
    Inventor: Adam M. Kroening
  • Patent number: 9771304
    Abstract: Disclosed are embodiments of synthetic garnet materials for use in radiofrequency applications. In some embodiments, increased amounts of bismuth can be added into specific sites in the crystal structure of the synthetic garnet in order to boost certain properties, such as the dielectric constant and magnetization. Accordingly, embodiments of the disclosed materials can be used in high frequency applications, such as in base station antennas.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: September 26, 2017
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Bowie Cruickshank, Michael David Hill
  • Patent number: 9768497
    Abstract: Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: September 19, 2017
    Assignee: Gula Consulting Limited Liability Company
    Inventors: Alexandre Dupuy, Ajay Gummalla, Maha Achour
  • Patent number: 9761922
    Abstract: Input/output terminals 6a, 6b and 6c are formed within portions of cutouts 5a, 5b and 5c provided in a ground conductor 5 on the underside of a magnetic material 3; signal conductors 9a, 9b and 9c are formed within portions of cutouts 8a, 8b and 8c provided in a ground conductor 8 on the top surface of a dielectric substrate 7 at the same places as the cutouts 5a, 5b and 5c of the ground conductor; through holes 10a, 10b and 10c electrically connect a center conductor 4 to the input/output terminals 6a, 6b and 6c; metal bumps 11a, 11b and 11c electrically connect the input/output terminals 6a, 6b and 6c to the signal conductors 9a, 9b and 9c facing each other; and metal bumps 16 electrically connect the ground conductor 5 to the ground conductor 8.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: September 12, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hidenori Ishibashi, Tetsu Owada, Akihiro Ando, Hironobu Shibata
  • Patent number: 9748624
    Abstract: A non-reciprocal circuit element includes a ferrite, a first central electrode and a second central electrode that are arranged on the ferrite so as to cross each other in an insulated state, and a permanent magnet configured to apply a DC magnetic field to a portion where the first and second central electrodes cross each other. One end of the first central electrode defines an input port and the other end thereof defines an output port. One end of the second central electrode defines the input port and the other end thereof defines a ground port. A resistance element and a capacitance element which are connected in parallel with each other are connected in series between the input port and the output port. A switching capacitance unit configured to switch a capacitance is connected in parallel with the resistance element between the input port and the output port.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: August 29, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takaya Wada
  • Patent number: 9735458
    Abstract: Disclosed herein is a non-reciprocal circuit device includes: a substrates including a magnetic plate having a circular surface and a dielectric ring having an annular surface, the circular surface and the annular surface being substantially coplanar; a center conductor disposed on the substrates; and a permanent magnet that applies a magnetic field to the center conductor. The center conductor includes: a main conductor portion positioned on a straight line extending from a center of the circular surface to an outer periphery of the annular surface; and a branched conductor portion extending in a radial direction of the substrate from the center of the circular surface. The branched conductor portion includes: a wide portion disposed on the circular surface; and a narrow portion having a width smaller than that of the wide portion and disposed across a boundary between the circular surface and the annular surface.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 15, 2017
    Assignee: TDK CORPORATION
    Inventors: Hideyuki Sasaki, Minoru Sakai
  • Patent number: 9727026
    Abstract: Magnetic centring device for micromechanical applications, including a magnet and a magnetic flux conduction device arranged on the magnet, the magnetic flux conduction device including a central magnetic flux conduction disc made of a magnetic material having high magnetic permeability, and a peripheral area arranged around the central disc and separated from the central disc by a non-zero distance.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: August 8, 2017
    Assignee: Montres Breguet SA
    Inventors: Camille Tadla, Philippe Poux, Jean-Philippe Rochat, Davide Sarchi
  • Patent number: 9728831
    Abstract: Favorable isolation characteristics are obtained over a wide band in a non-reciprocal circuit element. A non-reciprocal circuit element includes: a magnetic material 10 to which a DC magnetic field is applied by a permanent magnet; and a plurality of center electrodes disposed on the magnetic material 10 so as to intersect each other in an insulated state. Of the plurality of center electrodes, a first center electrode 21 is connected at one end thereof to a first input/output port P1, and a second center electrode 22 is connected at one end thereof to a second input/output port P2. A resistance element R is connected in series between the ports P1 and P2, and a phase-shift circuit (a parallel resonant circuit composed of an inductance element L5 and a capacitance element C5) is connected in series with the resistance element R.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: August 8, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Seigo Hino
  • Patent number: 9728832
    Abstract: In one embodiment, a system comprises: a first circulator module comprising a first plurality of circulators including a first circulator; a second circulator module comprising a second plurality of circulators including a second circulator, wherein an interconnection port connects the first and second circulator modules, each circulator in the first and second plurality of circulators comprises: an internal cavity; a plurality of ports extending from the internal cavity, wherein at least one port in the plurality of ports connects the circulator to another circulator; and at least one ferrite element disposed in the internal cavity and including at least one aperture; the system further comprising: a control wire, respective portions of the control wire being disposed in the at least one aperture of the at least one ferrite element of the first circulator and the at least one aperture of the at least one ferrite element of the second circulator.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: August 8, 2017
    Assignee: Honeywell International Inc.
    Inventors: Adam M. Kroening, Sean Forney
  • Patent number: 9711834
    Abstract: An irreversible circuit element includes first and second high pass isolators each including first and second center electrodes intersecting with and being insulated from each other on a ferrite to which a direct-current magnetic field is applied with a permanent magnet. One end of the first center electrode is an output port and the other end thereof is an input port, and one end of the second center electrode is another output port and the other end thereof is a ground port. A pass frequency band of the first isolator is higher than a pass frequency band of the second isolator. Respective output portions of the first and second isolators are electrically connected and defined as one output terminal, and a low pass filter LPF is inserted between the output terminal and the output port of the second isolator.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: July 18, 2017
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takaya Wada, Yoshiki Yamada
  • Patent number: 9711836
    Abstract: A system for improving port isolation of a three port circulator device includes a power splitter having a power splitter input and two power splitter outputs. A first circulator has a first circulator first port, a first circulator second port, and a first circulator third port, and the first circulator first port is electrically coupled to the first of the two power splitter outputs. A second circulator has a second circulator first port, a second circulator second port, and a second circulator third port, and the second circulator first port is electrically coupled to the second of the two power splitter outputs. A first trimmer is electrically coupled to the first circulator third port and a second trimmer is electrically coupled to the second circulator third port.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: July 18, 2017
    Assignee: The United States of America as requested by the Secretary of the Air Force
    Inventor: Russell Vela
  • Patent number: 9705172
    Abstract: A non-reciprocal circuit element includes a ferrite, a first central electrode and a second central electrode arranged on the ferrite so as to cross each other in an insulated state, and a permanent magnet that applies a DC magnetic field to a portion where the first and second central electrodes cross each other. One end of the first central electrode defines an input port, and the other end thereof defines an output port. One end of the second central electrode defines the input port, and the other end thereof defines a ground port. A resistance element and a capacitance element, which are connected in parallel with each other, are connected in series with and between the input port and the output port. Input impedance is lowered by making inductance of the second central electrode relatively large.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: July 11, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takaya Wada, Reiji Nakajima