Patents by Inventor Syunsuke KIDO

Syunsuke KIDO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11190163
    Abstract: A filter device having a pass band and a stop band on a lower frequency side than the pass band includes a filter having a pass band including the pass band, a series arm resonator connected in series to the filter, a first inductor directly connected in series to the series arm resonator, and a parallel arm resonator connected between a node on a path connecting the filter and the series arm resonator and the ground. The parallel arm resonator constitutes a resonance circuit having a resonant frequency at which an attenuation pole corresponding to a high frequency end of the first stop band, and the series arm resonator and the inductor constitute a resonance circuit having an anti-resonant frequency on a lower frequency side than the pass band and having a sub-resonant frequency higher than a resonant frequency of the resonance circuit.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: November 30, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Keisuke Nishio, Syunsuke Kido, Masanori Kato, Hiroshi Matsubara
  • Publication number: 20210351809
    Abstract: A high frequency filter includes series arm resonators and parallel arm resonators as acoustic wave resonators and at least one inductor, wherein capacitive components of the acoustic wave resonators constitute an LPF and an HPF as hybrid filters with an inductor or with an inductor and a capacitor, and the at least one inductor includes inductors as mount component inductors.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Inventor: Syunsuke KIDO
  • Patent number: 11165409
    Abstract: An acoustic wave device includes an interdigital transducer electrode provided on a piezoelectric substrate, the interdigital transducer electrode includes first and second electrode fingers. The second electrode fingers are connected to an electric potential different from that of the first electrode fingers. A direction orthogonal or substantially orthogonal to a direction in which the first electrode fingers and the second electrode fingers extend is an acoustic wave propagation direction, the interdigital transducer electrode includes a first area centrally provided in the acoustic wave propagation direction, second areas provided on one side and another side of the first area in the acoustic wave propagation direction, and third areas each provided on a side of each of the second areas opposite to the first area in the acoustic wave propagation direction.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: November 2, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tomio Kanazawa, Hiroshi Shimizu, Syunsuke Kido, Ryo Nakagawa
  • Publication number: 20210336639
    Abstract: A radio-frequency module includes a transmission path which has one end connected to a transmission terminal and on which a transmission signal in Band A is transmitted; a reception path (62) which has one end connected to a reception terminal (120B) and on which a reception signal in Band B is transmitted; a reception path (63) which has one end connected to a reception terminal (120C) and on which a reception signal in Band C is transmitted; a switch (11) having a common terminal (11a) and selection terminals (11b and 11c); and a switch (12) having a common terminal (12a) and selection terminals (12b and 12c).
    Type: Application
    Filed: July 7, 2021
    Publication date: October 28, 2021
    Inventors: Motoji TSUDA, Yusuke NANIWA, Morio TAKEUCHI, Atsushi HORITA, Jin YOKOYAMA, Sho MATSUMOTO, Syunsuke KIDO, Yukiya YAMAGUCHI, Hiroyuki KANI
  • Patent number: 11152898
    Abstract: A radio-frequency circuit includes a first switch which includes a common terminal, a first selection terminal, and a second selection terminal, and switches between connecting the common terminal and the first selection terminal and connecting the common terminal and the second selection terminal; a first low-noise amplifier including an input terminal connected to the first selection terminal, and a second low-noise amplifier including an input terminal connected to the second selection terminal. The frequency band in which the first low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain includes the frequency band in which the second low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: October 19, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Syunsuke Kido
  • Publication number: 20210315096
    Abstract: A filter includes a first input/output electrode and the second input/output electrode, and is arranged on a first main surface of a mounting substrate. The mounting substrate includes a first land electrode, a second land electrode, a ground terminal, and a plurality of via conductors. The first land electrode is connected to the first input/output electrode. The second land electrode is connected to the second input/output electrode. The ground terminal is located closer to a second main surface side than the first main surface in a thickness direction of the mounting substrate. The plurality of via conductors is arranged between the first main surface and the second main surface, and is connected to the ground terminal. The plurality of via conductors is located between the first land electrode and the second land electrode in a plan view from the thickness direction of the mounting substrate.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 7, 2021
    Inventors: Hiroshi MATSUBARA, Masanori KATO, Yukiteru SUGAYA, Syunsuke KIDO
  • Publication number: 20210313962
    Abstract: A high-frequency module includes a mounting substrate, a filter, and a common inductor. The mounting substrate includes a first main surface and a second main surface facing each other. The filter includes series arm resonators and parallel arm resonators, and is disposed on the first main surface. The mounting substrate includes a ground terminal on the second main surface. A first end of the common inductor is connected to all of the parallel arm resonators. A second end of the common inductor is connected to the ground terminal.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 7, 2021
    Inventors: Yukiteru SUGAYA, Syunsuke KIDO, Masanori KATO, Hiroshi MATSUBARA
  • Patent number: 11101839
    Abstract: A high frequency filter includes series arm resonators and parallel arm resonators as acoustic wave resonators and at least one inductor, wherein capacitive components of the acoustic wave resonators constitute an LPF and an HPF as hybrid filters with an inductor or with an inductor and a capacitor, and the at least one inductor includes inductors as mount component inductors.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: August 24, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Syunsuke Kido
  • Publication number: 20200382160
    Abstract: A radio frequency circuit includes a first acoustic wave filter that is connected to a common terminal and includes a first acoustic wave resonator, a first LC filter that is connected to the common terminal via the first acoustic wave filter and includes at least one of an inductor or a capacitor, a second acoustic wave filter that is connected to the common terminal and includes a second acoustic wave resonator, and a second LC filter that is connected to the common terminal via the second acoustic wave filter and includes at least one of an inductor or a capacitor.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 3, 2020
    Inventors: Morio TAKEUCHI, Syunsuke KIDO
  • Publication number: 20200382081
    Abstract: A radio-frequency circuit includes a first switch which includes a common terminal, a first selection terminal, and a second selection terminal, and switches between connecting the common terminal and the first selection terminal and connecting the common terminal and the second selection terminal; a first low-noise amplifier including an input terminal connected to the first selection terminal, and a second low-noise amplifier including an input terminal connected to the second selection terminal. The frequency band in which the first low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain includes the frequency band in which the second low-noise amplifier amplifies a radio-frequency signal by at least a predetermined gain.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 3, 2020
    Inventors: Morio TAKEUCHI, Syunsuke KIDO
  • Patent number: 10804882
    Abstract: A hybrid multiplexer includes a filter configured to allow a high-frequency signal of an HB to pass therethrough, and a filter configured to allow a high-frequency signal of an MB to pass therethrough, in which the filter includes a matching circuit, a first resonance circuit defined by one of an LPF and an HPF, and a second resonance circuit defined by the other of the LPF and the HPF, the LPF includes an inductor and a parallel arm resonator, the HPF includes a serial arm resonator and an inductor, and a resonant frequency of the parallel arm resonator and an anti-resonant frequency of the serial arm resonator are both located between a frequency at a low-band end of the HB and a frequency at a high-band end of the HB.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: October 13, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroshi Matsubara, Masanori Kato, Syunsuke Kido
  • Patent number: 10727805
    Abstract: A filter includes two series arm resonators electrically connected in series between two input/output terminals, a parallel arm resonator electrically connected between a ground and a series arm between the two series arm resonators, an inductor electrically connected in parallel to the two series arm resonators, and a matching circuit electrically connected between one of the two series arm resonators and one of the input/output terminals, wherein the two series arm resonators and the parallel arm resonator define a pass band of a bandpass filter, the two series arm resonators and the inductor define an LC resonant circuit, respective anti-resonant frequencies of each of the two series arm resonators and a resonant frequency of the parallel arm resonator are located in a pass band of the LC resonant circuit, and a resonant frequency of the LC resonant circuit is lower than the resonant frequency of the parallel arm resonator.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: July 28, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Kato, Syunsuke Kido
  • Publication number: 20200228155
    Abstract: A high frequency filter includes series arm resonators and parallel arm resonators as acoustic wave resonators and at least one inductor, wherein capacitive components of the acoustic wave resonators constitute an LPF and an HPF as hybrid filters with an inductor or with an inductor and a capacitor, and the at least one inductor includes inductors as mount component inductors.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventor: Syunsuke KIDO
  • Publication number: 20200212866
    Abstract: A filter circuit that secures the steepness from a pass range to an attenuation range while maintaining a wide-band transmission characteristic and a filter device including this filter circuit are formed. A filter circuit includes a first filter and a second filter. The first filter is a filter including an LC circuit in which a first frequency band is a pass band and a frequency band not higher than the first frequency band is an attenuation band. The second filter is a filter that attenuates a second frequency band within the first frequency band by using an attenuation pole produced by a resonance or an antiresonance of an acoustic wave resonator. Further, the first filter is placed closer to an antenna terminal than the second filter.
    Type: Application
    Filed: December 26, 2019
    Publication date: July 2, 2020
    Inventors: Hiroshi MATSUBARA, Masanori KATO, Syunsuke KIDO
  • Publication number: 20200177154
    Abstract: A filter device having a pass band and a stop band on a lower frequency side than the pass band includes a filter having a pass band including the pass band, a series arm resonator connected in series to the filter, a first inductor directly connected in series to the series arm resonator, and a parallel arm resonator connected between a node on a path connecting the filter and the series arm resonator and the ground. The parallel arm resonator constitutes a resonance circuit having a resonant frequency at which an attenuation pole corresponding to a high frequency end of the first stop band, and the series arm resonator and the inductor constitute a resonance circuit having an anti-resonant frequency on a lower frequency side than the pass band and having a sub-resonant frequency higher than a resonant frequency of the resonance circuit.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: Keisuke NISHIO, Syunsuke KIDO, Masanori KATO, Hiroshi MATSUBARA
  • Patent number: 10651821
    Abstract: A multiplexer includes a first filter on a first path connecting a common terminal and a first terminal and defined by a band pass filter, a low pass filter, or a high pass filter, and a second resonator on a second path connecting the common terminal and a second terminal and defined by a band elimination filter including at least one elastic wave resonator. A pass band of the first filter and an attenuation band of the second filter overlap with each other, and a ripple of a first resonator closest to the common terminal is generated only outside pass bands of the first filter and the second filter.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: May 12, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Syunsuke Kido
  • Publication number: 20200083859
    Abstract: An elastic wave device includes a supporting substrate, a high-acoustic-velocity film stacked on the supporting substrate and in which an acoustic velocity of a bulk wave propagating therein is higher than an acoustic velocity of an elastic wave propagating in a piezoelectric film, a low-acoustic-velocity film stacked on the high-acoustic-velocity film and in which an acoustic velocity of a bulk wave propagating therein is lower than an acoustic velocity of a bulk wave propagating in the piezoelectric film, the piezoelectric film is stacked on the low-acoustic-velocity film, and an IDT electrode stacked on a surface of the piezoelectric film.
    Type: Application
    Filed: November 12, 2019
    Publication date: March 12, 2020
    Inventors: Munehisa WATANABE, Hideki IWAMOTO, Hajime KANDO, Syunsuke KIDO
  • Publication number: 20200052675
    Abstract: An acoustic wave device includes an interdigital transducer electrode provided on a piezoelectric substrate, the interdigital transducer electrode includes first and second electrode fingers. The second electrode fingers are connected to an electric potential different from that of the first electrode fingers. A direction orthogonal or substantially orthogonal to a direction in which the first electrode fingers and the second electrode fingers extend is an acoustic wave propagation direction, the interdigital transducer electrode includes a first area centrally provided in the acoustic wave propagation direction, second areas provided on one side and another side of the first area in the acoustic wave propagation direction, and third areas each provided on a side of each of the second areas opposite to the first area in the acoustic wave propagation direction.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Inventors: Tomio KANAZAWA, Hiroshi SHIMIZU, Syunsuke KIDO, Ryo NAKAGAWA
  • Publication number: 20200014370
    Abstract: A hybrid multiplexer includes a filter configured to allow a high-frequency signal of an HB to pass therethrough, and a filter configured to allow a high-frequency signal of an MB to pass therethrough, in which the filter includes a matching circuit, a first resonance circuit defined by one of an LPF and an HPF, and a second resonance circuit defined by the other of the LPF and the HPF, the LPF includes an inductor and a parallel arm resonator, the HPF includes a serial arm resonator and an inductor, and a resonant frequency of the parallel arm resonator and an anti-resonant frequency of the serial arm resonator are both located between a frequency at a low-band end of the HB and a frequency at a high-band end of the HB.
    Type: Application
    Filed: September 18, 2019
    Publication date: January 9, 2020
    Inventors: Hiroshi MATSUBARA, Masanori KATO, Syunsuke KIDO
  • Patent number: 10511279
    Abstract: An elastic wave device includes a supporting substrate, a high-acoustic-velocity film stacked on the supporting substrate and in which an acoustic velocity of a bulk wave propagating therein is higher than an acoustic velocity of an elastic wave propagating in a piezoelectric film, a low-acoustic-velocity film stacked on the high-acoustic-velocity film and in which an acoustic velocity of a bulk wave propagating therein is lower than an acoustic velocity of a bulk wave propagating in the piezoelectric film, the piezoelectric film is stacked on the low-acoustic-velocity film, and an IDT electrode stacked on a surface of the piezoelectric film.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 17, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Munehisa Watanabe, Hideki Iwamoto, Hajime Kando, Syunsuke Kido