For Providing Frequency Separation Patents (Class 333/132)
  • Patent number: 11470278
    Abstract: A system includes an input and a plurality of outputs. The system also includes an in-home network adapter configured to connect to and be positioned between the input and the plurality of outputs. The system also includes a splitter configured to connect to and be positioned between the in-home network adapter and the plurality of outputs. The input is configured to receive signals in a cable television (CATV) bandwidth and signals in a multimedia over coax alliance (MoCA) bandwidth. The in-home network adapter is configured to allow the signals in the MoCA bandwidth to pass from the input to the plurality of outputs and from the plurality of outputs to the input. The in-home network adapter is configured to attenuate or prevent the signals in the CATV bandwidth from passing from the input to the plurality of outputs, from the plurality of outputs to the input, or both.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: October 11, 2022
    Assignee: PPC BROADBAND, INC.
    Inventor: Paul Bailey
  • Patent number: 11437694
    Abstract: A coaxial tap in a hybrid fiber coaxial cable distribution system serves subscribers with an RF signal while passing the RF signal and an equipment supply voltage to devices downstream of the tap.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: September 6, 2022
    Assignee: Holland Electronics, LLC
    Inventors: Michael Holland, George Goebel
  • Patent number: 11418224
    Abstract: An antenna switch of a radio frequency module selectively switches at least between connection between a first connection terminal and a common terminal and connection between a second connection terminal and the common terminal. A first connection terminal receives a signal in a first communication band. A second connection terminal receives a signal in a second communication band. When the second connection terminal and the common terminal are in connection with each other, a variable capacitor (C1, C2) of a filter circuit shifts the attenuation band of the filter circuit to a higher band than that when the first connection terminal and the common terminal are in connection with each other.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: August 16, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Reiji Nakajima
  • Patent number: 11394472
    Abstract: A double-antenna radio frequency power detection circuit comprises a radio frequency transceiver, a switching module, a first power detection module, a second power detection module, a first antenna, and a second antenna. The switching module outputs a radio frequency signal received from the radio frequency transceiver, to the first power detection module or the second power detection module according to a switching signal. The first power detection module or the second power detection module respectively detects the transmit power of the radio frequency signal passing through the first antenna or the second antenna, and gives a feedback to the radio frequency transceiver.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: July 19, 2022
    Assignee: JRD Communication (Shenzhen) LTD.
    Inventors: Xu Feng, Zhaosheng Zhang, Fan Huang, Tao Mao, Bifeng Hu
  • Patent number: 11355844
    Abstract: An antenna device configured to be attached to a vehicle includes: an antenna of a resonance type; and a matching circuit connected to the antenna, wherein the matching circuit includes a first matching circuit connected to a feeding portion of the antenna and a second matching circuit connected to a subsequent stage of the first matching circuit, wherein the first matching circuit reduces an impedance in a frequency band that is away to a higher-frequency range or a lower-frequency range from a resonance point of the antenna such that the impedance is lower than before connection of the first matching circuit, and the second matching circuit increases an impedance in a vicinity of the resonance point of the antenna such that the impedance is higher than before connection of the second matching circuit.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 7, 2022
    Assignee: YOKOWO CO., LTD.
    Inventor: Yusuke Yokota
  • Patent number: 11336252
    Abstract: A filter (10) includes two capacitors (C1a and C1b) that are connected in series on a path connecting an input terminal (101a) and an output terminal (102a), an inductor (L2) that is connected in parallel with a series circuit including the two capacitors (C1a and C1b), and a parallel-arm resonator (P1) that is connected between the ground and a node (N) between the two capacitors (C1a and C1b) on the path.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: May 17, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hirotsugu Mori
  • Patent number: 11296664
    Abstract: A front-end module of a wireless device can replace a passive duplexer with an active duplexer that uses metamaterial matching circuits. The active duplexer can be formed from a power amplifier circuit and a low noise amplifier circuit that each include a metamaterial matching circuit. The combination of a power amplifier circuit and a low noise amplifier circuit that each utilize metamaterials to form the associated matching circuit can provide the functionality of a duplexer without including the additional circuitry of a stand-alone or passive duplexer. Thus, in certain cases, the front-end module can provide duplexer functionality without including a separate duplexer. Advantageously, in certain cases, the size of the front-end module can be reduced by eliminating the passive duplexer. Further, the loss introduced into the signal path by the passive duplexer is eliminated improving the performance of the communication system that includes the active duplexer.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: April 5, 2022
    Assignee: Skyworks Solutions, Inc.
    Inventor: Hanseung Lee
  • Patent number: 11264971
    Abstract: A multiplexer includes a filter (10) arranged between a common terminal and an input/output terminal (110) and configured to pass a radio frequency signal in a first frequency band, and a filter (20) arranged between the common terminal and an input/output terminal (120) and configured to pass a radio frequency signal in a second frequency band. The filter includes series arm circuits (31 and 32) connected in series, a series arm circuit (33) connected in parallel to the series arm circuit (32), and a parallel arm circuit. The series arm circuit (32) includes a series arm resonator that is an acoustic wave resonator. The series arm circuit (33) includes a switch arranged on a second path connecting nodes. In a CA mode, the switch is OFF. In a non-CA mode, the switch is ON.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 1, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hirotsugu Mori
  • Patent number: 11190160
    Abstract: Provided is a frequency multiplexer. The frequency multiplexer includes a stacked structure. The stacked structure includes at least one insulating layer and a plurality of metal layers arranged alternately along a stacked direction. The stacked structure forms at least one first inductive element and at least one capacitive element. At least two of the plurality of metal layers are provided with respective first patterned metal structures. The first patterned metal structures in the at least two of the plurality of metal layers are electrically connected to form a first multilayer planar spiral coil structure. The first multilayer planar spiral coil structure constitutes the first inductive element.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 30, 2021
    Assignee: ANHUI ANUKI TECHNOLOGIES CO., LTD.
    Inventors: Xiaodong Wang, Chengjie Zuo, Jun He
  • Patent number: 11159144
    Abstract: Disclosed is a radio frequency multiplexer having an M number of multiplexer branches each having an outer port terminal coupled to a common outer node, wherein M is a positive counting number. Each of the M number of multiplexer branches comprises a multi-bandpass filter configured to filter an N number of bands multiplexed by the radio frequency multiplexer to pass an individual group of N/M bands, wherein N is a positive counting number greater than one and equal to a total number of bands to be multiplexed. Each of the M number of multiplexer branches further includes an N/M number of resonator branches each having a band port terminal configured to pass a single band and an inner branch terminal coupled to an inner port terminal of the multi-bandpass filter at a common inner node.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: October 26, 2021
    Assignee: Qorvo US, Inc.
    Inventor: Nadim Khlat
  • Patent number: 11082014
    Abstract: A logarithmic detector amplifying (LDA) system is provided for use as a high sensitivity receive booster or replacement for a low noise amplifier in a receive chain of a communication device. The LDA system includes an amplifying circuit configured to receive an input signal having a first frequency and generate an oscillation based on the input signal, a sampling circuit coupled to the amplifying circuit and configured to terminate the oscillation based on a predetermined threshold to periodically clamp and restart the oscillation to generate a series of pulses modulated by the oscillation and by the input signal, and one or more metamaterial (“MTM”) resonant circuits coupled in shunt with an RF path that couples the amplifying circuit in series and configured to establish a frequency of operation and a phase response to output a signal having RF frequencies with a ultra-wide bandwidth.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 3, 2021
    Inventors: Alexandre Dupuy, Forrest James Brown, Richard Olesco, Grant Kumataka
  • Patent number: 11005442
    Abstract: An electrical circuit can be formed at least in part using lumped or discrete circuit elements to provide an artificial transmission line structure that can mimic the electrical properties of a corresponding actual transmission line structure. Such an artificial transmission line structure can generally consume less area than an actual transmission line structure lacking such lumped or discrete elements. Such an artificial transmission line structure can be formed using two or more “unit cells” such as by cascading such cells as shown and described herein. The present inventors have recognized, among other things, that a unit cell of an artificial transmission line structure can include a t-coil section comprising magnetically-coupled inductors. Such an artificial transmission line structure can be used for applications such as phase shifting or to provide a delay line having a substantially constant group delay, among other applications.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 11, 2021
    Assignee: Analog Devices International Unlimited Company
    Inventors: Xudong Wang, Michael W. Bagwell, William B. Beckwith, Thomas E. Schiltz
  • Patent number: 10998630
    Abstract: An antenna module includes a dielectric substrate having a multilayer structure, a power supply element and a ground electrode (GND) disposed in or on the dielectric substrate, a parasitic element, a power supply wiring line, and first and second stubs to be connected to the power supply wiring line. The parasitic element is disposed in a layer between the power supply element and the ground electrode (GND). The power supply wiring line passes through the parasitic element and supplies radio frequency power to the power supply element. The first stub is connected to a position different from a connection position of the second stub in the power supply wiring line.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: May 4, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kaoru Sudo, Kengo Onaka, Hirotsugu Mori
  • Patent number: 10985725
    Abstract: According to some embodiments, an on-chip diplexer circuit is disclosed. The on-chip diplexer circuit includes a LC resonator module, the LC resonator module further comprises a first port, a first LC resonator unit and a second LC resonator unit; a first filter unit, the first filter unit is electrically connected to the first LC resonator unit in the LC resonator module, and the first filter unit is electrically connected to a second port; and a second filter unit, the second filter unit is electrically connected to the second LC resonator unit in the LC resonator module, and the second filter unit is electrically connected to a third port.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: April 20, 2021
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Ming-Hsien Tsai
  • Patent number: 10985733
    Abstract: Radio-frequency core circuitry includes a first switch arm associated with a first signal band and coupled to a common node, a second switch arm associated with a second signal band and coupled to the common node, a first shunt arm connected to a first shunt node in the first switch arm, and a first transmission line disposed in the first switch arm between the common node and the shunt node and having a length configured present an open circuit at a fundamental frequency associated with the second signal band and to present a short circuit at a harmonic of the fundamental frequency associated with the second signal band.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: April 20, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 10931261
    Abstract: A filter includes a resonant circuit defining at least a portion of a signal path connected between a first terminal and a second terminal, an elastic wave resonator including one end that is grounded, a first inductor including one end connected to one end of the resonant circuit and another end connected to another end of the elastic wave resonator, and a second inductor including one end connected to another end of the resonant circuit and another end connected to the other end of the elastic wave resonator. The resonant circuit is an LC series resonant circuit in which a third inductor and first and second capacitors are connected in series with each other.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: February 23, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Kato, Minoru Iwanaga, Hiroshi Matsubara
  • Patent number: 10931263
    Abstract: Filter circuits having a resonator-based filter and a magnetically-coupled filter are disclosed. A filter circuit is deployed with a resonator-based passband filter connected to a magnetically-coupled filter which mitigates or reduces flyback of the resonator-based filter. The magnetically-coupled filter can be a passband filter with a relatively low insertion loss. The magnetically-coupled filter can be designed to mitigate flyback of the resonator-based filter by attenuating frequency response at selected frequency ranges.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 23, 2021
    Assignee: Qorvo US, Inc.
    Inventors: Jeffrey D. Galipeau, Lawrence A. Carastro, Jeff Dekosky
  • Patent number: 10911024
    Abstract: A SAW filter includes a piezoelectric substrate, a serial arm and a parallel resonance portion. The serial arm includes one or more serial resonance portions. The parallel resonance portion is located on the piezoelectric substrate and configures a ladder-type filter together with the serial arm. The parallel resonance portion includes a parallel resonator and a capacity element. The parallel resonator includes an IDT electrodes on the piezoelectric substrate and a pair of reflectors on the two sides thereof. The capacity element is connected in parallel with the parallel resonator. A capacitance of the capacity element is 0.8 time or more of a capacitance of the IDT electrode in the parallel resonator. A difference between an anti-resonance frequency and a resonance frequency of the first parallel resonance portion is smaller than a difference between an anti-resonance frequency and a resonance frequency of the first parallel resonator.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 2, 2021
    Assignee: KYOCERA Corporation
    Inventor: Motoki Ito
  • Patent number: 10897280
    Abstract: A communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT) are provided. The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The electronic device includes a first antenna module including a first amplifier configured to amplify a signal received from a communication circuit, a second antenna module including a second amplifier configured to amplify a signal received from the communication circuit, and an impedance matching circuit disposed between an output terminal of the first amplifier and an output terminal of the second amplifier.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: January 19, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeongho Lee, Yunsung Cho, Daehyun Kang, Byungjoon Park, Hyunchul Park, Juho Son
  • Patent number: 10847306
    Abstract: A front-end circuit (1), which is a high-frequency module, includes an input-output terminal (4); a duplexer (14) electrically connected to the input-output terminal (4); an LNA (171) electrically connected to the duplexer (14); a PA (161) electrically connected to the duplexer (14); a matching network (23) provided between the input-output terminal (4) and the duplexer (14) and including an inductor (231); and a matching network provided between the duplexer (14) and the PA (161) and including an inductor (162). The matching network including the inductor (162) is an output matching network configured to perform impedance matching between an output terminal of the PA (161) and the duplexer (14), and the inductor (231) includes a plurality of inductors (231a and 231b) connected in series.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: November 24, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Dai Nakagawa
  • Patent number: 10833651
    Abstract: A multiplexer includes a common terminal, a first terminal, a second terminal, and a third terminal, a first filter, a second filter, and a third filter. With a frequency f3 being defined as M×f1±N×f2 or M×f2±N×f1, M and N being natural numbers, f1 being a frequency included in a first passband of the first filter and f2 being a frequency included in a second passband of the second filter, at least a part of a range of frequency f3 overlaps a third passband of the third filter. No acoustic wave resonator is connected between the common terminal and a first parallel arm resonance circuit. A combined capacitance of the first parallel arm resonance circuit is higher than a minimum value of a combined capacitance of each of at least one first serial arm resonance circuit.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 10, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 10833647
    Abstract: Various embodiments of the invention relate to a high performance analog bandpass filter (BPF) with improved performance in suppressing parasitic passband. The BPF comprises a first loss-pass filter (LPF) coupled to a first RF port, a second LPF coupled to a second RF port, and at least one high-pass module coupled in series between the first LPF and the second LPF for band-pass tuning. A resonant circuit is composed by a shunt capacitor from the LPF, a shunt inductor from the high-pass module and a series inductor from the LPF coupled in between. Such layout empowers the LPFs triple functions: to function as a low-pass filter, to participate in resonant circuit for center frequency tuning of the BPF, and to suppress parasitic resonance. Such a triple-function of the LPFs gives the BPF an improvement in a compact but effective topology.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 10, 2020
    Assignee: Chengdu Sicore Semiconductor Corp. Ltd.
    Inventors: Cemin Zhang, Qiling Zheng, Rong Zhang
  • Patent number: 10819312
    Abstract: A multiplexer includes a common terminal, a first terminal, a second terminal, and a third terminal, a first filter, a second filter, and a third filter. With a frequency f3 being defined as M×f1±N×f2 or M×f2±N×f1, M and N being natural numbers, f1 being a frequency included in a first passband of the first filter and f2 being a frequency included in a second passband of the second filter, at least a part of a range of frequency f3 overlaps a third passband of the third filter. No acoustic wave resonator is connected between the common terminal and a first parallel arm resonance circuit. A fractional bandwidth of the first parallel arm resonance circuit is smaller than a maximum value of a fractional bandwidth of each of at least one serial arm resonance circuit.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 27, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 10796838
    Abstract: A network transformer module includes a first magnetic element and a second magnetic element. The first magnetic element includes a first iron core and a first coil winding. The first coil winding is composed of a first wire and a second wire, and is wrapped 7 to 14 turns around the first iron core. The second magnetic element includes a second iron core and a second coil winding. The second coil winding is composed of a third wire and a fourth wire, and is wrapped 2 to 5 turns around the second iron core.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: October 6, 2020
    Assignee: Delta Electronics, Inc.
    Inventors: Chin-Hsin Lai, Li-O Lee, Chia-Kai Weng
  • Patent number: 10700658
    Abstract: A flexible multi-path RF adaptive tuning network switch architecture that counteracts impedance mismatch conditions arising from various combinations of coupled RF band filters, particularly in a Carrier Aggregation-based (CA) radio system. In one version, a digitally-controlled tunable matching network is coupled to a multi-path RF switch in order to provide adaptive impedance matching for various combinations of RF band filters. Optionally, some or all RF band filters include an associated digitally-controlled filter pre-match network to further improve impedance matching. In a second version, some or all RF band filters coupled to a multi-path RF switch include a digitally-controlled phase matching network to provide necessary per-band impedance matching. Optionally, a digitally-controlled tunable matching network may be included on the common port of the multi-path RF switch to provide additional impedance matching capability.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: June 30, 2020
    Assignee: pSemi Corporation
    Inventors: Emre Ayranci, Miles Sanner, Ke Li, James Francis McElwee, Tero Tapio Ranta, Kevin Roberts, Chih-Chieh Cheng
  • Patent number: 10693529
    Abstract: A single cable interface for operably coupling a radio to an antenna may include a radio interface operably coupled to the radio, an antenna interface operably coupled to the antenna, and a single RF coaxial cable extending between the radio interface and the antenna interface. The radio interface and the antenna interface may each be configured to multiplex and de-multiplex multiple RF signals communicated from the radio to the antenna or from the antenna to the radio such that each of the multiple RF signals is communicated over the single RF coaxial cable. The multiple RF signals include a first RF signal and a second RF signal, the first and second RF signals having a same carrier frequency, phase and modulation type.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: June 23, 2020
    Assignee: AeroAntenna Technology, Inc.
    Inventors: Alex Sissoev, Joseph Klein
  • Patent number: 10680304
    Abstract: Embodiments of this disclosure provide a combiner, which includes an external conductor and an internal conductor, the external conductor and the internal conductor form at least two band-stop filters, and the at least two band-stop filters form at least two passbands; the at least two passbands include a first target combined passband and a second target combined passband, and a frequency of the first target combined passband is lower than a frequency of the second target combined passband; and a signal channel is included between a signal input end and a signal output end of a band-stop filter to which the second target combined passband belongs, the signal channel is formed by the internal conductor, and the internal conductor forming the signal channel includes a capacitor. Implementing the present invention can shorten a length of a main transmission line of the signal channel, and reduce a volume of the combiner.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: June 9, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Dantao Cai
  • Patent number: 10680303
    Abstract: A combiner with a common port and a dually layered cavity includes a cavity, a clapboard used for dividing the cavity into an upper cavity and a lower cavity, a common port, a number of signal posts, and a first coupling disc, said common port and said number of signal ports being disposed at two sides of the cavity respectively. The upper cavity and the lower cavity are each provided with a number of filter paths, and an upper common harmonic post and a lower common harmonic post are disposed at a location close to the common port; a first coupling hole is defined in the clapboard at a location close to the common port, and the first coupling disc is disposed in the first coupling hole and connected with the common port.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: June 9, 2020
    Assignee: Comba Telecom Technology (Guangzhou) Limited
    Inventors: Bihui Meng, Zhenxiong Xie, Guoming Zhou, Jingqiang Wu, Yunxi Jin, Jinchao Xia
  • Patent number: 10622963
    Abstract: According to some embodiments, an on-chip diplexer circuit is disclosed. The on-chip diplexer circuit includes a LC resonator module, the LC resonator module further comprises a first port, a first LC resonator unit and a second LC resonator unit; a first filter unit, the first filter unit is electrically connected to the first LC resonator unit in the LC resonator module, and the first filter unit is electrically connected to a second port; and a second filter unit, the second filter unit is electrically connected to the second LC resonator unit in the LC resonator module, and the second filter unit is electrically connected to a third port.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: April 14, 2020
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventor: Ming-Hsien Tsai
  • Patent number: 10616053
    Abstract: A reconfigurable triplexer that can support more frequency bands than a traditional triplexer is disclosed. For example, the reconfigurable triplexer can handle frequencies of several hundred megahertz up to 10 gigahertz. Further, certain implementations of the reconfigurable multiplexer can reduce or eliminate frequency dead zones that exist with traditional multiplexers. The reconfigurable triplexer includes a multi-stage filter bank capable of supporting a number of frequency bands and a bypass circuit that enables the triplexer to support a variety of sets of frequencies. For instance, unlike traditional triplexers, the reconfigurable triplexer can support both frequency bands with relatively narrow spacing and frequency bands with relatively wide spacing. Further, the inclusion of the bypass circuit enables the reduction or elimination of dead zones between supported frequencies.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: April 7, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: Yang Hou, Reza Kasnavi, Jianxing Ni, Shanshan Zhao
  • Patent number: 10547336
    Abstract: Radio frequency (RF) circuitry is configured to separately route RF transmit signals in different RF frequency bands through one or more non-linear elements, such as switches, in order to avoid intermodulation of the RF transmit signals. One or more filters may be arranged to provide different switching paths in RF front end circuitry to ensure that RF transmit signals are not routed together through a non-linear element, thereby improving the performance of the circuitry.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: January 28, 2020
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Marcus Granger-Jones
  • Patent number: 10541713
    Abstract: Multiplexers having hybrid circuits with resonators. In some embodiments, a multiplexer for processing radio-frequency signals can include a plurality of nodes, a common node, and a signal path implemented between each of the plurality of nodes and the common node. Each signal path can include a filter, and each of at least some of the signal paths can further include a resonator coupled with the corresponding filter. A signal path with the resonator provides a sharper notch profile for a radio-frequency signal than a signal path without the resonator.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: January 21, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: Jianxing Ni, Joshua James Caron, Srivatsan Jayaraman, Reza Kasnavi, John G. Freed
  • Patent number: 10530336
    Abstract: A transmission filter includes five series resonators that include functional electrodes provided on a piezoelectric substrate, and connected in series with each other between a transmission input terminal and an antenna terminal, and parallel resonators. Frequency differences between the anti-resonant frequencies and the resonant frequencies of the series resonators other than the series resonator connected so as to be closest to the transmission input terminal and the series resonator connected so as to be closest to the antenna terminal are smaller than frequency differences of the series resonators, and anti-resonant frequencies of the series resonators are lower than the anti-resonant frequencies of the series resonators.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: January 7, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yuichi Takamine
  • Patent number: 10389310
    Abstract: A radio-frequency signal amplifier circuit that is used in a front-end circuit and that propagates a radio-frequency transmission signal and a radio-frequency reception signal is described. The amplifier circuit has an amplifier transistor, a bias circuit, a resistor, and an LC series resonance circuit. The LC series resonant circuit has one end that is connected to a node between the resistor and a signal input terminal, and has another end that is connected to a grounding terminal. A resonant frequency of the LC series resonance circuit is included in a difference frequency band between the frequencies of the transmission signal and the reception signal.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: August 20, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Reiji Nakajima, Hidenori Obiya
  • Patent number: 10389330
    Abstract: An electronic component a multilayer body including insulation layers stacked in a stacking direction, a mounting surface that opposes a circuit board when the electronic component is mounted on the circuit board, first and second input/output terminals provided on the mounting surface and adjacent to each other, a ground terminal, a first filter circuit, in the multilayer body, electrically connected between the first input/output terminal and the second input/output terminal, and a ground conductor layer, provided between the first filter circuit and the mounting surface in the stacking direction, that overlaps with the first input/output terminal and the second input/output terminal when viewed in plan view from the stacking direction, and that is connected to the ground terminal.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 20, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Yusuke Mukai
  • Patent number: 10379500
    Abstract: Systems and methods for detecting the failure of a precision time source using an independent time source are disclosed. Additionally, detecting the failure of a GNSS based precision time source based on a calculated location of a GNSS receiver is disclosed. Moreover, the system may be further configured to distribute a time derived from the precision time source as a precision time reference to time dependent devices. In the event of a failure of the precision time source, the system may be configured to distribute a time derived from a second precision time source as the precision time signal during a holdover period.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: August 13, 2019
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Shankar V. Achanta, David E. Whitehead, Henry Loehner
  • Patent number: 10367475
    Abstract: Aspects of this disclosure relate to a multiplexer, such as a duplexer, a quadplexer, a hexaplexer, or the like. The multiplexer includes acoustic wave filters coupled to a common node. At least one of the acoustic wave filters includes surface acoustic wave resonators and a series bulk acoustic wave resonator coupled between the surface acoustic wave resonators and the common node.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: July 30, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventor: Joshua James Caron
  • Patent number: 10355667
    Abstract: A ladder filter defines a transmission filter and has a structure such that a resonator located closest to an input terminal is a parallel-arm resonator, and the parallel-arm resonator located closest to the input terminal includes a plurality of division resonators connected in parallel. At least one division resonator has a resonant frequency and an anti-resonant frequency that are located outside a passband of the ladder filter, and the remaining division resonators and parallel-arm resonators each have an anti-resonant frequency located within the passband.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: July 16, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Toshiaki Takata
  • Patent number: 10348265
    Abstract: A transformer-type phase shifter or a phase-shift circuit includes a first coil and a second coil that is magnetically coupled to the first coil with a coupling coefficient of less than 1, a transformer including a parallel inductance component and a series inductance component, and an impedance adjustment circuit including a reactance element that performs impedance adjustment for the transformer, thus being advantageous in reducing the size, loss, and frequency dependency of the phase-shift amount.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: July 9, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Kenichi Ishizuka, Hiroshi Nishida
  • Patent number: 10256794
    Abstract: A radio-frequency module includes a switching device having first and second switch arms and a common pole node connected to both the first and second switch arms, a first shunt arm connected to the first switch arm, and a first transmission line disposed in the first switch arm between the common pole node and the first shunt arm, the first transmission line being configured to present a substantially open circuit looking into the first switch arm from the common pole node at a fundamental frequency of a signal transmitting on the second switch arm when the first switch arm is in an OFF-state and the first shunt arm is in an ON-state.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 9, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 10236862
    Abstract: A problem is improved in which a plurality of duplexers has to be used if at least one of a transmission band and reception band for a handheld terminal partially overlaps a frequency band used in another communication system. A duplexer device includes a duplexer configured to include an antenna terminal, a transmission terminal and a reception terminal and to have a specific transmission band and reception band and a band-stop filter connected to at least one of the antenna terminal, the transmission terminal and the reception terminal via a switch and configured to suppress some of at least one of the specific transmission band and reception band in response to the switching of the switch.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: March 19, 2019
    Assignee: WISOL JAPAN CO, LTD.
    Inventors: Takahiro Sato, Kensei Uehara, Motoyuki Tajima
  • Patent number: 10148249
    Abstract: A high frequency circuit includes a first demultiplexing circuit including a first high pass filter and a low pass filter and a second demultiplexing circuit including a band elimination filter and a band pass filter, the second demultiplexing circuit being connected in series with the first demultiplexing circuit. At least one of the band elimination filter and the band pass filter includes an elastic wave resonator. An attenuation band of the band elimination filter and a pass band of the band pass filter is located between a pass band of the first high pass filter and a pass band of the low pass filter.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 4, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoshihiro Yoshimura, Masanori Kato
  • Patent number: 10116283
    Abstract: Multi-band filters, communications devices, and methods of designing multi-band filters are disclosed. A multi-band filter has a lower pass-band and an upper pass-band separated by an intervening stop-band. The multi-band filter includes a first ladder network and a second ladder network coupled in series. The first ladder network provides transmission zeros at frequencies below a lower edge of the lower pass-band and transmission zeros at frequencies above an upper edge of the upper pass-band. The second ladder network provides transmission zeros at frequencies within the intervening stop-band.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: October 30, 2018
    Assignee: Resonant Inc.
    Inventor: Gregory L. Hey-Shipton
  • Patent number: 10103704
    Abstract: A diplexer module includes substrates, an external connection terminal, a first diplexer including a first transmission filter and a first reception filter, a second diplexer including a second transmission filter and a second reception filter, and a switch. The external connection terminal is connected to the switch, the switch is connected to the first diplexer and the second diplexer, and the first transmission filter, the second transmission filter, the second reception filter, and the first reception filter are aligned in this order when the substrates are seen in plan view from above.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 16, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masato Yoshida, Tadashi Washimori
  • Patent number: 10062629
    Abstract: Antenna aperture tuning circuitry includes a first signal path and a second signal path coupled in parallel between an antenna radiating element and ground. A first LC resonator and a second LC resonator are each coupled between the first signal path and ground. The first LC resonator and the second LC resonator are electromagnetically coupled such that a coupling factor between the first LC resonator and the second LC resonator is between about 1.0% and 40.0%. A third LC resonator and a fourth LC resonator are each coupled between the second signal path and ground. The third LC resonator and the fourth LC resonator are electromagnetically coupled such that a coupling factor between the third LC resonator and the fourth LC resonator is between about 1.0% and 40.0%.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: August 28, 2018
    Assignee: Qorvo US, Inc.
    Inventors: George Maxim, Dirk Robert Walter Leipold, Marcus Granger-Jones, Baker Scott
  • Patent number: 10027307
    Abstract: An extensible filter structure is disclosed allowing realizable effective filtering over many decades in frequency. Multiple devices operating with mismatched frequency ranges can be multiplexed together with or without switching.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: July 17, 2018
    Inventor: Roger W. Dickerson
  • Patent number: 9979378
    Abstract: Mechanical resonators including doped piezoelectric active layers are described. The piezoelectric active layer(s) of the mechanical resonator may be doped with a dopant type and concentration suitable to increase the electromechanical coupling coefficient of the active layer. The increase in electromechanical coupling coefficient may all for improved performance and smaller size mechanical resonators than feasible without using the doping.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: May 22, 2018
    Assignee: Analog Devices, Inc.
    Inventor: Florian Thalmayr
  • Patent number: 9960749
    Abstract: Embodiments of the present application provide an intra-band combiner-divider and a multisystem combining platform, and the intra-band combiner-divider includes: a first-level duplexer, an intra-band combination unit, an intra-band division unit, and a second-level duplexer. In the embodiments of the present application, two ends of the intra-band combiner-divider are connected to the first-level duplexer and the second-level duplexer, so that the intra-band combiner-divider can separately process uplink and downlink signals, thereby reducing PIM of a communication system and improving receiver sensitivity of a base station.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: May 1, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Lanping Gong, Zhen Yuan
  • Patent number: 9948278
    Abstract: In a filter device, a first filter and a second filter are connected to a common connection point by a filter connection conductor line including a first conductor line portion, and a parallel connection area with an electrical length shorter than that in a single conductor line is provided in the first conductor line portion.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: April 17, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Tetsuro Okuda
  • Patent number: 9877061
    Abstract: An apparatus and method for processing satellite signals is provided. A switch receives an input signal having a predetermined frequency range, the predetermined frequency range including at least two frequency sub-bands. A first diplexer is connected to a first output of the switch and generates a first filtered signal including a first frequency sub-band and a second frequency sub-band and a second filtered signal including a third frequency sub-band. A second diplexer is connected to a second output of the switch and generates a third filtered signal including the first frequency sub-band and a fourth filtered signal including the second frequency sub-band. A controller activates the switch to operate between a first mode and a second mode.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 23, 2018
    Assignee: THOMSON Licensing
    Inventor: Lincheng Xiu