Patents by Inventor Junpei Yasuda
Junpei Yasuda 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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Patent number: 10886897Abstract: A filter device includes a substrate and first to third filters provided on the substrate and each including an input terminal and an output terminal. A center frequency of a pass band of the first filter is lower than a center frequency of a pass band of the second filter, and the center frequency of the pass band of the second filter is lower than a center frequency of a pass band of the third filter. Of the first and third filters, when the filter having the center frequency of the pass band close to the center frequency of the filter is defined as a proximity filter and the other is defined as a non-proximity filter, an input terminal and an output terminal of the proximity filter are not adjacent to an input terminal and an output terminal of the second filter.Type: GrantFiled: June 12, 2019Date of Patent: January 5, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Junpei Yasuda
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Patent number: 10793213Abstract: A saddle type vehicle includes a seat rail and a seat that is attached to the seat rail. The seat rail includes an outer edge that is placed on an outward side in a vehicle body width direction and an inner edge that is placed on an inward side in the vehicle body width direction and higher than the outer edge. On the other hand, the seat includes a sitting part. When the sitting part sits on an upper surface of the inner edge, a side part of the seat surrounds (covers) the sitting part.Type: GrantFiled: September 17, 2018Date of Patent: October 6, 2020Assignee: HONDA MOTOR CO., LTD.Inventors: Kei Mayuzumi, Kazuyuki Tachibana, Junpei Yasuda, Shota Yamasaki, Kei Fukuyama
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Publication number: 20200304100Abstract: A filter module includes a filter provided on a path connecting an input/output terminal and an input/output terminal, a filter provided on a path connecting an input/output terminal and an input/output terminal, a switch that switches between electrical connection and electrical disconnection between a wire connected to the input/output terminal and a ground, and a switch that switches between electrical connection and electrical disconnection between a wire connected to the input/output terminal and the ground. When the wire and the ground are electrically connected by the switch, the wire and the ground are electrically disconnected by the switch, and when the wire and the ground are electrically connected by the switch, the wire and the ground are electrically disconnected by the switch.Type: ApplicationFiled: June 11, 2020Publication date: September 24, 2020Inventor: Junpei YASUDA
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Publication number: 20200228097Abstract: A multiplexer includes a plurality of filters, in which one input/output terminal of each of the plurality of filters is connected to a common terminal, a first filter included in the plurality of filters is a ladder filter and includes at least one series arm resonator connected on a path connecting the common terminal and another input/output terminal of the first filter, at least one parallel arm resonator connected between a connection node provided on the path and a ground, and a switch which is connected in series to a parallel arm resonator connected most nearby to the common terminal among at least one parallel arm resonator and switches between conduction and non-conduction of a node to which the parallel arm resonator is connected and the ground.Type: ApplicationFiled: March 26, 2020Publication date: July 16, 2020Inventor: Junpei YASUDA
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Patent number: 10601395Abstract: An elastic wave device includes a first filter including an elastic wave resonator and a second filter connected to an antenna common terminal via a common node. When a first pass band of the first filter and second pass bands of the second filters are F1 and F2, respectively, F1<F2. The first filter includes at least one elastic wave resonator, and the elastic wave resonator uses Rayleigh waves propagating on a piezoelectric substrate made of LiNbO3, IDT electrodes including a Pt film on a piezoelectric layer made of LiNbO3, and a silicon oxide film covering the IDT electrodes. The thickness of the silicon oxide layer is about 33% or less of the wavelength of the IDT electrodes.Type: GrantFiled: October 15, 2018Date of Patent: March 24, 2020Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mari Saji, Junpei Yasuda
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Patent number: 10536179Abstract: A switch module includes a filter that allows a signal in a first frequency range to pass therethrough, a filter that allows a signal in a second frequency range to pass therethrough, an impedance load circuit, and an antenna switch including a common terminal connected to an antenna element, a first selection terminal connected to the filter, a second selection terminal connected to the filter, and a third selection terminal connected to the impedance load circuit. When only one frequency range is selected from among the first and second frequency ranges, the antenna switch connects the common terminal to only one of the first and second selection terminals and connects the common terminal to the third selection terminal.Type: GrantFiled: April 4, 2018Date of Patent: January 14, 2020Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Junpei Yasuda
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Publication number: 20190386634Abstract: 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: ApplicationFiled: August 27, 2019Publication date: December 19, 2019Inventors: Junpei YASUDA, Morio TAKEUCHI
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Publication number: 20190379354Abstract: An acoustic wave device includes a piezoelectric substrate, a first band pass filter that is on the piezoelectric substrate and has a first pass band, and a second band pass filter that is on the piezoelectric substrate and has a second pass band at a higher frequency than the first pass band. The first and second band pass filters include resonators that include respective IDT electrodes. When a first total average metallization ratio is defined as an average of metallization ratios of all of the IDT electrodes included in the first filter and a second total average metallization ratio is defined as an average of metallization ratios of all of the IDT electrodes included in the second filter, the first total average metallization ratio is greater than the second total average metallization ratio.Type: ApplicationFiled: August 23, 2019Publication date: December 12, 2019Inventor: Junpei YASUDA
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Publication number: 20190356302Abstract: An acoustic wave device includes an antenna terminal, a signal terminal, and a plurality of resonators that are provided on a piezoelectric substrate. The plurality of resonators include a plurality of series arm resonators on a series arm, and the duty of an IDT electrode of the series arm resonator closest to the antenna terminal among the plurality of series arm resonators is smaller than the duty of an IDT electrode of at least one series arm resonator among the other series arm resonators.Type: ApplicationFiled: July 31, 2019Publication date: November 21, 2019Inventor: Junpei YASUDA
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Patent number: 10447235Abstract: An elastic wave device includes a first band-pass filter on a piezoelectric substrate and including first IDT electrodes and a first dielectric film, and a second band-pass filter on the piezoelectric substrate and including second IDT electrodes and a second dielectric film. At least one pair among a pair of the first and second IDT electrodes and a pair of the first and second dielectric films has the same or substantially the same film thickness and is made of the same material. A relationship |Tx1?Rx1|/f1>|Tx2?Rx2|/f2 is satisfied. A weighted average of duty ratios of the first IDT electrodes is larger than a weighted average of duty ratios of the second IDT electrodes.Type: GrantFiled: February 22, 2019Date of Patent: October 15, 2019Assignee: Murata Manufacturing Co., Ltd.Inventor: Junpei Yasuda
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Patent number: 10439586Abstract: An electronic module includes a substrate, at least one first electronic component that includes a hollow portion, at least one second electronic component that includes no hollow portion, a first sealing resin, and a second sealing resin. The at least one first electronic component is sealed with the first sealing resin. The at least one second electronic component has a narrowest pitch between the electrodes that are provided on the mounting surface, and at least the mounting surface including the electrodes of the at least one second electronic component are sealed with the second sealing resin. The volume percentage of a filler that is included in the first sealing resin is larger than the volume percentage of a filler that is included in the second sealing resin.Type: GrantFiled: July 9, 2018Date of Patent: October 8, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Junpei Yasuda
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Publication number: 20190296717Abstract: A filter device includes a substrate and first to third filters provided on the substrate and each including an input terminal and an output terminal. A center frequency of a pass band of the first filter is lower than a center frequency of a pass band of the second filter, and the center frequency of the pass band of the second filter is lower than a center frequency of a pass band of the third filter. Of the first and third filters, when the filter having the center frequency of the pass band close to the center frequency of the filter is defined as a proximity filter and the other is defined as a non-proximity filter, an input terminal and an output terminal of the proximity filter are not adjacent to an input terminal and an output terminal of the second filter.Type: ApplicationFiled: June 12, 2019Publication date: September 26, 2019Inventor: Junpei YASUDA
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Publication number: 20190199325Abstract: An acoustic wave filter device includes a second filter section connected to a first filter section. The second filter section includes acoustic wave resonators in a ladder circuit configuration. Of the acoustic wave resonators in the first and second filter sections, the acoustic wave resonator having the smallest fractional bandwidth is included in the second filter section. In the second filter section, inductors are respectively connected between parallel arm resonators and a reference potential. Attenuation near a pass band in the second filter section is larger than attenuation near a pass band in the first filter section.Type: ApplicationFiled: March 4, 2019Publication date: June 27, 2019Inventor: Junpei YASUDA
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Publication number: 20190190487Abstract: An elastic wave device includes a first band-pass filter on a piezoelectric substrate and including first IDT electrodes and a first dielectric film, and a second band-pass filter on the piezoelectric substrate and including second IDT electrodes and a second dielectric film. At least one pair among a pair of the first and second IDT electrodes and a pair of the first and second dielectric films has the same or substantially the same film thickness and is made of the same material. A relationship |Tx1?Rx1|/f1>|Tx2?Rx2|/f2 is satisfied. A weighted average of duty ratios of the first IDT electrodes is larger than a weighted average of duty ratios of the second IDT electrodes.Type: ApplicationFiled: February 22, 2019Publication date: June 20, 2019Inventor: Junpei YASUDA
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Patent number: 10250221Abstract: An elastic wave device includes a piezoelectric substrate, first and second IDT electrodes on a first main surface, and electrode lands each connected to one of the first and second IDT electrodes. First and second side portions extend in a direction perpendicular or substantially perpendicular to a polarization axis direction and to a direction normal to the piezoelectric substrate. The length of the piezoelectric substrate along the polarization axis direction at the first side portion is shorter than that at the second side portion. The first IDT electrode is closer to the first side portion than the second IDT electrode. The electrode lands include a first electrode land connected to the first busbar of the first IDT electrode without having the second IDT electrode interposed therebetween, and a second electrode land being at the same potential as the first busbar of the first IDT electrode.Type: GrantFiled: June 3, 2016Date of Patent: April 2, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Junpei Yasuda
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Patent number: 10250220Abstract: An elastic wave device includes a piezoelectric substrate, an IDT electrode, wiring, a pad, an under bump metal, a first dielectric layer, and a second dielectric layer. At least a portion of the IDT electrode includes a first electrically conductive film, at least a portion of the wiring includes a multilayer body including the first electrically conductive film and a second electrically conductive film, and at least a portion of the pad includes the second electrically conductive film. The second dielectric layer covers the region other than the contact region between the second electrically conductive film and the under bump metal. Consequently, the second electrically conductive film is covered with the second dielectric layer and the under bump metal and is not exposed to air.Type: GrantFiled: February 3, 2016Date of Patent: April 2, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yuji Miwa, Hijiri Sumii, Junpei Yasuda, Taku Kikuchi, Hisashi Yamazaki
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Publication number: 20190084635Abstract: A saddle type vehicle includes a seat rail and a seat that is attached to the seat rail. The seat rail includes an outer edge that is placed on an outward side in a vehicle body width direction and an inner edge that is placed on an inward side in the vehicle body width direction and higher than the outer edge. On the other hand, the seat includes a sitting part. When the sitting part sits on an upper surface of the inner edge, a side part of the seat surrounds (covers) the sitting part.Type: ApplicationFiled: September 17, 2018Publication date: March 21, 2019Inventors: Kei Mayuzumi, Kazuyuki Tachibana, Junpei Yasuda, Shota Yamasaki, Kei Fukuyama
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Publication number: 20190052244Abstract: An elastic wave device includes a first filter including an elastic wave resonator and a second filter connected to an antenna common terminal via a common node. When a first pass band of the first filter and second pass bands of the second filters are F1 and F2, respectively, F1<F2. The first filter includes at least one elastic wave resonator, and the elastic wave resonator uses Rayleigh waves propagating on a piezoelectric substrate made of LiNbO3, IDT electrodes including a Pt film on a piezoelectric layer made of LiNbO3, and a silicon oxide film covering the IDT electrodes. The thickness of the silicon oxide layer is about 33% or less of the wavelength of the IDT electrodes.Type: ApplicationFiled: October 15, 2018Publication date: February 14, 2019Inventors: Mari SAJI, Junpei YASUDA
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Publication number: 20190028083Abstract: An electronic module includes a substrate, at least one first electronic component that includes a hollow portion, at least one second electronic component that includes no hollow portion, a first sealing resin, and a second sealing resin. The at least one first electronic component is sealed with the first sealing resin. The at least one second electronic component has a narrowest pitch between the electrodes that are provided on the mounting surface, and at least the mounting surface including the electrodes of the at least one second electronic component are sealed with the second sealing resin. The volume percentage of a filler that is included in the first sealing resin is larger than the volume percentage of a filler that is included in the second sealing resin.Type: ApplicationFiled: July 9, 2018Publication date: January 24, 2019Inventor: Junpei YASUDA
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Publication number: 20190027676Abstract: An electronic module includes a substrate that includes a first main surface and a second main surface, at least one first electronic component that includes electrodes on a mounting surface thereof on the substrate and that includes a hollow portion, at least one second electronic component that includes electrodes on a mounting surface thereof on the substrate and that includes no hollow portion, and a sealing resin. The at least one first electronic component is mounted on the first main surface of the substrate and sealed with the sealing resin. The at least one second electronic component is mounted on the second main surface of the substrate and is not sealed with the sealing resin.Type: ApplicationFiled: July 13, 2018Publication date: January 24, 2019Inventor: Junpei YASUDA