Patents by Inventor Morio TAKEUCHI

Morio TAKEUCHI 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).

  • Publication number: 20190386634
    Abstract: A composite filter device includes bandpass filters whose respective one ends are electrically connected in common. A first bandpass filter of the bandpass filters includes a first filter, a switch, a second filter, and an impedance element that is electrically connected to the switch and having an impedance value larger than the input impedance value of the second filter. The switch is configured to be switched between a first state in which the first filter and the second filter are electrically connected and a second state in which the first filter and the impedance element are electrically connected.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Junpei YASUDA, Morio TAKEUCHI
  • Publication number: 20190296708
    Abstract: A radio-frequency module utilizing carrier aggregation includes a switch circuit that includes one input terminal and three or more output terminals and that simultaneously connects the input terminal and each of two or more output terminals selected from the output terminals, signal paths that propagate signals of corresponding frequency bands, band pass filters in the signal paths, and variable matching circuits in the signal paths. The circuit states of the variable matching circuits are changed in accordance with a combination of two or more signal paths simultaneously connected to the input terminal.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventor: Morio Takeuchi
  • Patent number: 10396749
    Abstract: A radio-frequency module utilizing carrier aggregation includes a switch circuit that includes one input terminal and three or more output terminals and that simultaneously connects the input terminal and each of two or more output terminals selected from the output terminals, signal paths that propagate signals of corresponding frequency bands, band pass filters in the signal paths, and variable matching circuits in the signal paths. The circuit states of the variable matching circuits are changed in accordance with a combination of two or more signal paths simultaneously connected to the input terminal.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 27, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Morio Takeuchi
  • Publication number: 20190222236
    Abstract: A radio-frequency front-end circuit includes first and second filters, and first and second band elimination filters. The first filter is connected between an antenna common terminal and a first input-output terminal, and has a first frequency band as a pass band. The second filter is connected between the antenna common terminal and a second input-output terminal, and has a second frequency band as a pass band. The first band elimination filter is connected between the antenna common terminal and a third input-output terminal, and has the first frequency band as a stop band. The second band elimination filter is connected in series with the first band elimination filter between the antenna common terminal and the third input-output terminal, and has the second frequency band as a stop band.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: Daisuke MIYAZAKI, Morio TAKEUCHI
  • Patent number: 10340887
    Abstract: In a band pass filter, a first elastic wave resonator includes a first base board type and a first electrode configuration significantly improved or optimal for frequency characteristics of the first elastic wave resonator, and a second elastic wave resonator includes a second base board type and a second electrode configuration significantly improved or optimal for frequency characteristics of the second elastic wave resonator. A first attenuation pole provided by the first elastic wave resonator and a second attenuation pole provided by the second elastic wave resonator is steeper than if the first elastic wave resonator and the second elastic wave resonator that have different frequency characteristics include electrodes having the same configuration on the same types of base boards.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: July 2, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Koji Nosaka
  • Patent number: 10128816
    Abstract: In a high frequency module, in addition to a main transmission path in which a high-frequency signal propagates in first filter elements, a sub transmission path is defined by inductive coupling or capacitive coupling between a first inductor and a matching element or by inductive coupling between the first inductor and a second inductor. The sub transmission path has different amplitude characteristics and phase characteristics from those of the main transmission path depending on a degree of the inductive coupling or capacitive coupling, and transmission characteristics as a high-frequency module are adjustable by adjusting the amplitude characteristics and the phase characteristics of the sub transmission path.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: November 13, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Koichiro Kawasaki, Yohei Konaka
  • Patent number: 10075160
    Abstract: A switch circuit includes first and second switches. The first switch includes a first common terminal and at least two first selection terminals selectively connected to the first common terminal. The second switch includes at least one second common terminal and at least one second selection terminal selectively connected to the at least one second common terminal. One of the at least two first selection terminals and the at least one second common terminal are connected to each other via a path passing through a first multiplexer. Another one of the at least two first selection terminals and the at least one second common terminal are connected to each other via a bypass path bypassing the first multiplexer.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: September 11, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Teruaki Oshita, Daisuke Miyazaki, Morio Takeuchi
  • Patent number: 9998097
    Abstract: A radio-frequency front-end circuit includes a first filter that has a first pass band and is connected to an antenna common terminal, a second filter that has a second pass band and is connected to the antenna common terminal, a switch that includes a common terminal and selection terminals, the common terminal being connected to the first filter, and a third filter that is connected to one of the selection terminals and is disposed between the switch and an input/output terminal. A reflection coefficient of the first filter alone in the second pass band viewed from the antenna common terminal is larger than a reflection coefficient of the third filter alone in the second pass band viewed from the antenna common terminal.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: June 12, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Daisuke Miyazaki, Tetsuro Okuda
  • Publication number: 20180152172
    Abstract: A radio frequency front-end circuit includes a multiplexer including filters with different pass bands and including a first acoustic wave filter and a first terminal of each of the filters being connected in common, a second acoustic wave filter including a pass band within the pass band of the first acoustic wave filter, and a switch including a common terminal connected to a second terminal of the first acoustic wave filter and selective terminals including a selective terminal connected to the second acoustic wave filter. Each of an acoustic wave resonator of the first acoustic wave filter located closest to the switch and an acoustic wave resonator of the second acoustic wave filter located closest to the switch, is a serial arm resonator.
    Type: Application
    Filed: November 22, 2017
    Publication date: May 31, 2018
    Inventor: Morio TAKEUCHI
  • Patent number: 9979379
    Abstract: A multiplexer includes a n number (n is an integer equal to three or more) of filters that are individually provided in the n number of paths commonly connected at a common junction point, and that have different pass bands from one another. In the multiplexer, (n?1) filters among the n number of filters except for the first filter have impedances of which imaginary components cancel each other at a pass band frequency of the first filter when viewed from the common junction point in a state of the n number of paths being not commonly connected.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: May 22, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Junpei Yasuda, Morio Takeuchi
  • Publication number: 20180123549
    Abstract: A radio-frequency module utilizing carrier aggregation includes a switch circuit that includes one input terminal and three or more output terminals and that simultaneously connects the input terminal and each of two or more output terminals selected from the output terminals, signal paths that propagate signals of corresponding frequency bands, band pass filters in the signal paths, and variable matching circuits in the signal paths. The circuit states of the variable matching circuits are changed in accordance with a combination of two or more signal paths simultaneously connected to the input terminal.
    Type: Application
    Filed: January 3, 2018
    Publication date: May 3, 2018
    Inventor: Morio TAKEUCHI
  • Patent number: 9935613
    Abstract: A filter unit of a high-frequency module includes a plurality of SAW resonators connected in series between a first series connection terminal and a second series connection terminal, first shunt connection terminals, a second shunt connection terminal, and a plurality of SAW resonators. A connection line interconnecting the SAW resonators is connected to the first shunt connection terminal through one of the SAW resonators. The first shunt connection terminal is connected to a ground through an inductor. A matching circuit is connected between the second series connection terminal and a second external connection terminal. The matching circuit is inductively or capacitively coupled to the inductor.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: April 3, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Morio Takeuchi, Shinya Mizoguchi
  • Patent number: 9929719
    Abstract: A high-frequency module includes a connection line that interconnects a first SAW resonator and a second SAW resonator, and is connected to a second shunt connection terminal through a third SAW resonator. A connection line interconnecting a fourth SAW resonator and a second series connection terminal is connected to the second shunt connection terminal through a fifth SAW resonator. The second shunt connection terminal is connected to a ground through an inductor. A matching circuit is connected between a first series connection terminal and a first external connection terminal. The matching circuit is inductively or capacitively coupled to the inductor.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: March 27, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Hideki Muto, Masanori Kato
  • Patent number: 9917569
    Abstract: A high frequency module includes a first external connection terminal, a second external connection terminal, a filter unit, a first matching circuit, and a second matching circuit. The filter unit is connected between the first external connection terminal and the second external connection terminal. The first matching circuit is connected between the first external connection terminal and the filter unit. The second matching circuit is connected between the second external connection terminal and the filter unit. The first matching circuit and the second matching circuit are inductively or capacitively coupled to each other.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: March 13, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Morio Takeuchi
  • Publication number: 20180048308
    Abstract: A switch circuit includes first and second switches. The first switch includes a first common terminal and at least two first selection terminals selectively connected to the first common terminal. The second switch includes at least one second common terminal and at least one second selection terminal selectively connected to the at least one second common terminal. One of the at least two first selection terminals and the at least one second common terminal are connected to each other via a path passing through a first multiplexer. Another one of the at least two first selection terminals and the at least one second common terminal are connected to each other via a bypass path bypassing the first multiplexer.
    Type: Application
    Filed: August 9, 2017
    Publication date: February 15, 2018
    Inventors: Teruaki OSHITA, Daisuke MIYAZAKI, Morio TAKEUCHI
  • Publication number: 20180019509
    Abstract: A multiplexer includes a n number (n is an integer equal to three or more) of filters that are individually provided in the n number of paths commonly connected at a common junction point, and that have different pass bands from one another. In the multiplexer, (n?1) filters among the n number of filters except for the first filter have impedances of which imaginary components cancel each other at a pass band frequency of the first filter when viewed from the common junction point in a state of the n number of paths being not commonly connected.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 18, 2018
    Inventors: Junpei YASUDA, Morio TAKEUCHI
  • Publication number: 20180019730
    Abstract: A radio-frequency front-end circuit includes a first filter that has a first pass band and is connected to an antenna common terminal, a second filter that has a second pass band and is connected to the antenna common terminal, a switch that includes a common terminal and selection terminals, the common terminal being connected to the first filter, and a third filter that is connected to one of the selection terminals and is disposed between the switch and an input/output terminal. A reflection coefficient of the first filter alone in the second pass band viewed from the antenna common terminal is larger than a reflection coefficient of the third filter alone in the second pass band viewed from the antenna common terminal.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Inventors: Morio TAKEUCHI, Daisuke MIYAZAKI, Tetsuro OKUDA
  • Publication number: 20170134005
    Abstract: In a band pass filter, a first elastic wave resonator includes a first base board type and a first electrode configuration significantly improved or optimal for frequency characteristics of the first elastic wave resonator, and a second elastic wave resonator includes a second base board type and a second electrode configuration significantly improved or optimal for frequency characteristics of the second elastic wave resonator. A first attenuation pole provided by the first elastic wave resonator and a second attenuation pole provided by the second elastic wave resonator is steeper than if the first elastic wave resonator and the second elastic wave resonator that have different frequency characteristics include electrodes having the same configuration on the same types of base boards.
    Type: Application
    Filed: January 19, 2017
    Publication date: May 11, 2017
    Inventors: Morio TAKEUCHI, Koji NOSAKA
  • Patent number: 9602078
    Abstract: A high-frequency module includes a filter unit and first and second external connection terminals. The filter unit includes first and second terminals and a plurality of SAW resonators. The plurality of SAW resonators are connected to one another by connection conductors. A matching element is connected between the first terminal and the first external connection terminal, and a matching element is connected between the second terminal and the second external connection terminal. At least one of the matching elements is inductively coupled or capacitively coupled to at least one of the connection conductors located at a position such that at least one of the SAW resonators is interposed between the matching element and the connection conductor.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 21, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Morio Takeuchi
  • Patent number: 9503051
    Abstract: A filter unit of a high-frequency module includes SAW resonators connected in series with first and second series connection terminals therebetween, first and second shunt connection terminals, and additional SAW resonators. One end of one SAW resonator is connected to a connection node of other SAW resonators via a connection conductor, and the other end of the one SAW resonator is connected to the first shunt connection terminal via a connection conductor. The first shunt connection terminal is connected to ground via an inductor. A matching element is connected between the second series connection terminal and the second external connection terminal. The matching element is inductively coupled or capacitively coupled to the connection conductor.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: November 22, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Morio Takeuchi