For Providing Frequency Separation Patents (Class 333/132)
  • Patent number: 11930239
    Abstract: An apparatus for capturing video broadcasting signals comprises a plurality of capture channels, each channel producing respective video transport streams as inputs to a multi-channel virtualization module. Each channel comprises: an input interface powered by a low-noise power supply arranged to receive a respective modulated video broadcasting input signal within an input frequency band; a single input, dual output distribution amplifier arranged to produce first and second amplified input signals within a satellite broadcasting frequency band and within a cable and/or terrestrial broadcasting frequency band, respectively. A first tuner is configured to receive and downconvert the first amplified input signal to generate a first baseband signal; a second tuner is configured to receive and downconvert the second amplified input signal to generate a second baseband signal; and a demodulator is configured to receive the baseband signals as input and to generate the respective video transport stream.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: March 12, 2024
    Assignee: ATEME
    Inventor: Jean-Michel Capitan
  • Patent number: 11916530
    Abstract: Certain aspects of the present disclosure provide a filter circuit and techniques for filtering using the filter circuit. The filter circuit generally includes a first filter stage having a first acoustic wave resonator coupled in a series path between a first port of the filter circuit and a second port of the filter circuit, a first inductor-capacitor (LC) tank circuit, a first capacitor coupled between a first terminal of the first acoustic wave resonator and the first LC tank circuit, the first LC tank circuit being coupled between the first capacitor and a reference potential node, and a second capacitor coupled between a second terminal of the first acoustic wave resonator and the first LC tank circuit. In some aspects, the filter circuit includes one or more other filter stages coupled to the first filter stage.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: February 27, 2024
    Assignee: RF360 Singapore Pte. Ltd.
    Inventors: Georgiy Sevskiy, Mykola Shevelov, Bohdan Bravichev, Mathieu Pijolat, Stefan Freisleben, Patric Heide
  • Patent number: 11870422
    Abstract: A device includes a piezoelectric layer on a substrate and including a portion included in an acoustic resonator, a first conductive layer on the piezoelectric layer and including a first electrode of the acoustic resonator on a first side of resonator portion of the piezoelectric layer, and a second conductive layer on the piezoelectric layer and including a second electrode of the acoustic resonator on a second side of the resonator portion of the piezoelectric layer. An insulating layer is disposed on the second conductive layer and an interconnection metal layer is electrically connected to the second conductive layer or the first conductive layer and has a portion extending onto the insulating layer and overlapping a portion of the second conductive layer to provide a capacitor electrode of a capacitor coupled to the first electrode and/or the second electrode.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: January 9, 2024
    Assignee: Akoustis, Inc.
    Inventors: Saurabh Gupta, Zhiqiang Bi, Emad Mehdizadeh, Dae Ho Kim, Pinal Patel
  • Patent number: 11862836
    Abstract: A radio unit for unsynchronized Time Division Duplex (TDD) multi-band operation in a wireless communication system. The radio unit comprises a first resonator arrangement comprising one or more resonators tuned for operating at a first frequency band. A first terminal of the first resonator arrangement is coupled to an antenna element. The radio unit further comprises a second resonator arrangement comprising one or more resonators tuned for operating at a second frequency band. A first terminal of the second resonator arrangement is coupled to the antenna element. The radio unit further comprises a tunable resonator arrangement comprising at least four tunable resonators. The at least four tunable resonators in the tunable resonator arrangement are tuned according to different operating modes.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: January 2, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Youping Su, Jichang Liao
  • Patent number: 11861488
    Abstract: A neuron circuit, comprising first and second NDR devices biased each with opposite polarities, said first and second NDR devices being coupled to first and second grounded capacitors.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: January 2, 2024
    Assignee: HRL LABORATORIES, LLC
    Inventor: Wei Yi
  • Patent number: 11799511
    Abstract: A transceiver includes: a radio-frequency (RF) front-end circuit; a dedicated RF front-end circuit; and a switchable matching circuit, integrated in a chip. The RF front-end circuit deals with communications of a first wireless standard, and the dedicated RF front-end circuit deals with communications of a second wireless standard. The switchable matching circuit provides impedance matching between the signal port and the RF front-end circuit when the RF front-end circuit is in operation, and provides impedance matching between the signal port and the dedicated RF front-end circuit when the dedicated RF front-end circuit is in operation, and includes: a first capacitive circuit coupled to the signal port; a first switch circuit coupled between the first capacitive circuit and the dedicated RF front-end circuit; a second capacitive circuit coupled to the dedicated RF front-end circuit; and a second switch circuit coupled to a second terminal of the second capacitive circuit.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: October 24, 2023
    Assignee: MEDIATEK INC.
    Inventors: Wei-Chia Chan, Tse-Yu Chen, Hui-Hsien Liu, Jui-Lin Hsu, Chun-Wei Lin
  • Patent number: 11764746
    Abstract: A stacked composite filter device includes a stacked body having a first region and a second region that are different from each other. A first filter includes a first inductor and has a first pass band is arranged in the first region. A second filter includes a second inductor and has a second pass band on a lower frequency side than the first pass band is arranged in the second region. A first conductive structure extends in a stacking direction of the stacked body and includes one end grounded that is arranged in an area that is in the first region and adjacent to the second region. The other end of the first conductive structure is connected to the first inductor.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: September 19, 2023
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Masahiro Teramoto
  • Patent number: 11742821
    Abstract: A multiplexer includes: a multilayered body including dielectric layers stacked and having first and second surfaces; a common terminal, a first terminal, a second terminal, and a ground terminal disposed on a surface of the multilayered body; a first filter disposed in the multilayered body and electrically connected between the common terminal and the first terminal; a second filter including: a first inductor electrically connected between the common terminal and the second terminal; and a second inductor connected in series with the first inductor between the first inductor and the second terminal, the second inductor at least partially overlapping with the first inductor, a capacitance between a first end of the second inductor electrically closer to the common terminal and the ground terminal being larger than a capacitance between a first end of the first inductor electrically closer to the common terminal and the ground terminal.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: August 29, 2023
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Hirotaka Takeuchi
  • Patent number: 11700022
    Abstract: A diplexer includes a first filter circuit, and a second filter circuit. The first filter circuit is coupled to a first port for providing a first signal path for a first radio frequency (RF) signal. The second filter circuit is coupled to the first port for providing a second signal path for a second RF signal. The first filter circuit includes a first tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the first RF signal. The second filter circuit includes a second tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the second RF signal. The first frequency multiplication of the first RF signal corresponding to the first filter circuit is a fourth harmonic of the first RF signal.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: July 11, 2023
    Assignee: RichWave Technology Corp.
    Inventor: Chin-Lung Yang
  • Patent number: 11688930
    Abstract: An antenna apparatus includes two feeding parts, a filter matching network, and a radiator. The filter matching network includes a first port, a second port, and a third port. A first feeding part is electrically connected to the first port, a second feeding part is electrically connected to the second port, and the radiator is electrically connected to the third port. The first feeding part is configured to feed a low frequency signal and an intermediate frequency signal, the second feeding part is configured to feed a high frequency signal, the low frequency signal, the intermediate frequency signal, and the high frequency signal are respectively fed into the filter matching network by using the first feeding part and the second feeding part, and the filter matching network is configured to improve isolation between the low frequency signal and the intermediate frequency signal, and the high frequency signal.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: June 27, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Chih-Hua Chang, Chien-Ming Lee, Dong Yu, Hanyang Wang, Yen-Cheng Lai
  • Patent number: 11665314
    Abstract: A signal splitting device is to be installed in a CATV passive apparatus. The signal splitting device includes a circuit board that is disposed in a cover of the CATV passive apparatus, and a first connecting terminal and a second connecting terminal that are mounted to the circuit board and that are connected respectively to input and output terminals of the CATV passive apparatus. Each of the first and second connecting terminals includes a pin electrically connecting the circuit board and the corresponding one of the input and output terminals. The pin has a segment that is between the circuit board and the corresponding one of the input and output terminals and that has a length ranging from 4 to 15 mm.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 30, 2023
    Assignee: CABLE VISION ELECTRONICS CO., LTD.
    Inventors: Chien-Chung Lee, I-Sheng Ting, Min-Chi Tseng
  • Patent number: 11652468
    Abstract: Disclosed is a gallium arsenide (GaAs) enabled tunable filter for, e.g., 6 GHz Wi-Fi RF Frontend, with integrated high-performance varactors, metal-insulator-metal (MIM) capacitors, and 3D solenoid inductors. The tunable filter comprises a hyper-abrupt variable capacitor (varactor) high capacitance tuning ratio. The tunable filter also comprises a GaAs substrate in which through-GaAs-vias (TGV) are formed. The varactor along with the MIM capacitors and the 3D inductors is formed in an upper conductive structure on upper surface of the GaAs substrate. Lower conductive structure comprising lower conductors is formed on lower surface of the GaAs substrate. Electrical coupling between the lower and upper conductive structures is provided by the TGVs. The tunable filter can be integrated with radio frequency front end (RFFE) devices.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: May 16, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Je-Hsiung Lan, Jonghae Kim
  • Patent number: 11641239
    Abstract: Methods and systems capable of launching signal-carrying transverse electromagnetic waves onto a transmission line in the higher voltage region of the transmission distribution network. Such methods and systems may include a surface wave launcher located in the higher voltage region, a network unit located in a lower voltage region, and an arrester separating the surface wave launcher and the network unit, the arrester preventing voltage from arcing over from the higher voltage region to the lower voltage region where the arrester provides the signal to the surface wave launcher.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: May 2, 2023
    Assignee: ARRIS Enterprises LLC
    Inventors: David B. Bowler, Shaoting Gu, Xinfa Ma, Clarke V. Greene, David Grubb, III, Samuel Francois, Lawrence M. Hrivnak, Bruce C. Pratt, Theodore A. Colarusso, Thomas F. Kister, Robert Noonan, Vincent T. Lucarini, David F. Hubbell
  • Patent number: 11611331
    Abstract: A multiplexer includes a first filter located between a common terminal and a first terminal to pass a signal in a first passband, and a second filter located between the common terminal and a second terminal to pass a signal in a second passband. A first series arm circuit included in the first filter includes a first series arm resonator and a second series arm resonator. The first series arm circuit is connected to the common terminal not through a circuit including an elastic wave resonator and a connecting point of the circuit. The first series arm circuit has a first antiresonance frequency and a second antiresonance frequency higher than the first antiresonance frequency. The second antiresonance frequency is higher than a higher edge of the first passband. The first antiresonance frequency is at or lower than a higher edge of the second passband.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: March 21, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Koji Nosaka
  • Patent number: 11545961
    Abstract: A multiplexer includes a first transmission filter connected to a common terminal, a reception filter, a second transmission filter, and a multilayer substrate. The first transmission filter includes a first parallel-arm resonator connected to a first parallel-arm terminal and a second parallel-arm resonator connected to a second parallel-arm terminal. The second transmission filter includes a third parallel-arm resonator connected to a third parallel-arm terminal and a fourth parallel-arm resonator connected to a fourth parallel-arm terminal. The first to fourth parallel-arm resonators are surface-mounted on a main surface of the multilayer substrate. The second and third parallel-arm terminals are grounded on any dielectric layer from the main surface to an n-th dielectric layer of the multilayer substrate and the first and fourth parallel-arm terminals are isolated from each other on the dielectric layers from the main surface to the n-th dielectric layer.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: January 3, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Tomoko Taguchi
  • 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: 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: 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: 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: 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: 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