Patents by Inventor Takayuki Tomita
Takayuki Tomita 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).
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Publication number: 20240102687Abstract: An aspect of this electrical device includes: a body controller which controls the electrical device; a voltage generator which generates a voltage supplied to the electrical device; a wiring which connects the body controller to the voltage generator; and an electrical device casing which accommodates the body controller and the voltage generator, wherein the electrical device casing includes: a wiring chamber in which the wiring is arranged; a first chamber in which the body controller is accommodated; and a second chamber in which the voltage generator is accommodated, wherein an inside of the first chamber and an inside of the second chamber are connected to each other through the inside of the wiring chamber.Type: ApplicationFiled: March 29, 2021Publication date: March 28, 2024Inventors: Takayuki SETO, Shuhei TOMITA, Takeshi KAWAMURA
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Patent number: 11387536Abstract: Provided is a mount component that is for forming a directional coupler consisting of a main line and a sub line. Out of the main line and the sub line, only the sub line is formed on or in the mount component. The main line is formed on or in a mounting substrate on which the mount component is mounted and is not formed on or in the mount component. When the mount component is mounted on the mounting substrate, the main line and the sub line electromagnetically couple with each other and as a result a directional coupler is formed.Type: GrantFiled: April 16, 2020Date of Patent: July 12, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Takayuki Tomita
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Patent number: 11362644Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: GrantFiled: February 4, 2021Date of Patent: June 14, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takayuki Tomita, Daisuke Watanabe
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Patent number: 11329630Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: GrantFiled: April 15, 2020Date of Patent: May 10, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takayuki Tomita, Daisuke Watanabe
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Patent number: 11283413Abstract: An amplification circuit includes a filter circuit, an amplifier, a capacitor, a bypass line, and a switch circuit that includes a first FET and a second FET connected in series between one end and the other end of the bypass line, a first resistance element connected in series to a gate of the first FET, and a second resistance element connected in series to a gate of the second FET. A first control signal is supplied to the gate of the first FET. A second control signal is supplied to the gate of the second FET. A product of a gate length and a gate width of the first FET and a resistance value of the first resistance element is smaller than a product of a gate length and a gate width of the second FET and a resistance value of the second resistance element.Type: GrantFiled: August 29, 2019Date of Patent: March 22, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Daisuke Watanabe, Takayuki Tomita
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Patent number: 11271534Abstract: A variable gain circuit includes: input/output terminals P1 and P2 configured to input/output a high frequency signal; a transistor having a signal terminal “a” connected to the input/output terminal P1, a signal terminal “b” connected to the input/output terminal P2, and a control terminal; bias terminals B1, B2 and B3, and a reference voltage terminal respectively set to a first variable voltage, a second variable voltage, a third variable voltage, and a fixed voltage that are independent of one another; an impedance element connected between the bias terminal B1 and the signal terminal a; an impedance element connected between the bias terminal B2 and the signal terminal b; an impedance element connected between the bias terminal B3 and the control terminal; and a first switch configured to switch between connecting and not connecting the reference voltage terminal and the control terminal.Type: GrantFiled: June 4, 2020Date of Patent: March 8, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Daisuke Watanabe, Takayuki Tomita
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Publication number: 20210159887Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: ApplicationFiled: February 4, 2021Publication date: May 27, 2021Inventors: Takayuki TOMITA, Daisuke WATANABE
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Patent number: 10944382Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: GrantFiled: April 15, 2020Date of Patent: March 9, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takayuki Tomita, Daisuke Watanabe
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Publication number: 20200389141Abstract: A variable gain circuit includes: input/output terminals P1 and P2 configured to input/output a high frequency signal; a transistor having a signal terminal “a” connected to the input/output terminal P1, a signal terminal “b” connected to the input/output terminal P2, and a control terminal; bias terminals B1, B2 and B3, and a reference voltage terminal respectively set to a first variable voltage, a second variable voltage, a third variable voltage, and a fixed voltage that are independent of one another; an impedance element connected between the bias terminal B1 and the signal terminal a; an impedance element connected between the bias terminal B2 and the signal terminal b; an impedance element connected between the bias terminal B3 and the control terminal; and a first switch configured to switch between connecting and not connecting the reference voltage terminal and the control terminal.Type: ApplicationFiled: June 4, 2020Publication date: December 10, 2020Inventors: Daisuke WATANABE, Takayuki TOMITA
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Publication number: 20200335845Abstract: Provided is a mount component that is for forming a directional coupler consisting of a main line and a sub line. Out of the main line and the sub line, only the sub line is formed on or in the mount component. The main line is formed on or in a mounting substrate on which the mount component is mounted and is not formed on or in the mount component. When the mount component is mounted on the mounting substrate, the main line and the sub line electromagnetically couple with each other and as a result a directional coupler is formed.Type: ApplicationFiled: April 16, 2020Publication date: October 22, 2020Inventor: Takayuki TOMITA
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Publication number: 20200244251Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: ApplicationFiled: April 15, 2020Publication date: July 30, 2020Inventors: Takayuki TOMITA, Daisuke WATANABE
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Publication number: 20200244250Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: ApplicationFiled: April 15, 2020Publication date: July 30, 2020Inventors: Takayuki TOMITA, Daisuke WATANABE
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Publication number: 20190386618Abstract: An amplification circuit includes a filter circuit, an amplifier, a capacitor, a bypass line, and a switch circuit that includes a first FET and a second FET connected in series between one end and the other end of the bypass line, a first resistance element connected in series to a gate of the first FET, and a second resistance element connected in series to a gate of the second FET. A first control signal is supplied to the gate of the first FET. A second control signal is supplied to the gate of the second FET. A product of a gate length and a gate width of the first FET and a resistance value of the first resistance element is smaller than a product of a gate length and a gate width of the second FET and a resistance value of the second resistance element.Type: ApplicationFiled: August 29, 2019Publication date: December 19, 2019Inventors: Daisuke WATANABE, Takayuki TOMITA
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Publication number: 20190103855Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: ApplicationFiled: December 4, 2018Publication date: April 4, 2019Inventors: Takayuki TOMITA, Daisuke WATANABE
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Patent number: 10181839Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: GrantFiled: April 21, 2017Date of Patent: January 15, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Takayuki Tomita, Daisuke Watanabe
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Publication number: 20170331458Abstract: A switch module includes a first terminal, first and second filters, and first and second switches. Impedance of the first filter for a signal in a stop band is capacitive. When the first switch is turned OFF, impedance of the first switch is capacitive, and impedance of the first filter seen from an end portion of the first switch connected to the first filter is not in a short state and impedance of the first filter seen from the first terminal is in an open state.Type: ApplicationFiled: April 21, 2017Publication date: November 16, 2017Inventors: Takayuki TOMITA, Daisuke WATANABE
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Patent number: 7014478Abstract: An electrical connection box includes a housing having a bottom plane with a recessed part at which the bottom plane is at least partially depressed; a circuit substrate accommodated into the housing to be overlapped on the bottom plane, the circuit substrate having a hole connectable to an inside of the recessed part of the housing and a space above the circuit substrate; and a potting material filled so that the circuit substrate can be buried into the housing. The hole is formed at a position corresponding to the recessed part of the housing.Type: GrantFiled: May 18, 2005Date of Patent: March 21, 2006Assignees: Autonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Kouji Yamashita, Kouzou Kimura, Takayuki Tomita, Shigeki Yamane
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Publication number: 20010048712Abstract: A spectrum spread receiver is provided which correlatively executes in synchronism with a timing determined by each of multiple paths and conducts RAKE synthesis of correlating signal of each path, and which comprises: a plurality of finger processing circuits 100 (101, 102); a memory circuit 81, which stores inverse spread data of a unit length; a timing adjustment circuit 71, which outputs a timing signal at the time when a predetermined amount of inverse spread data are stored in a memory circuit; and a RAKE synthesizer 10 for conducting RAKE synthesis by reading a predetermined length of inverse spread data from the memory circuit 81 based on the timing signal output from the timing adjustment circuit 71.Type: ApplicationFiled: May 25, 2001Publication date: December 6, 2001Applicant: NEC CORPORATIONInventors: Takayuki Tomita, Yuichi Maruyama