Patents by Inventor Hiromichi Yoshikawa
Hiromichi Yoshikawa 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: 11970242Abstract: A brake lever and a transmission with a novel antenna are provided. The brake lever is attachable to the handlebar. The brake lever includes a long portion configured as including an electrically conductive material and an antenna located on the long portion. The antenna includes a first conductor, a second conductor facing the first conductor in a first direction, a third conductor, a fourth conductor, and a power supply line configured to be electromagnetically connected to the third conductor. The third conductor is located between the first conductor and the second conductor, is configured to capacitively connect the first conductor and the second conductor, and extends in the first direction. The fourth conductor is connected to the first conductor and the second conductor and extends in the first direction. The fourth conductor faces the long portion.Type: GrantFiled: July 17, 2020Date of Patent: April 30, 2024Assignee: KYOCERA CORPORATIONInventors: Hikaru Nekozuka, Nobuki Hiramatsu, Hiromichi Yoshikawa, Sunao Hashimoto
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Patent number: 11955736Abstract: An antenna includes a housing, a first conductor group, and a power supply line. The housing includes a first surface including at least three first corner portions, a second surface including at least three second corner portions and facing the first surface, and a side surface connecting the first and second surfaces. A housing portion is surrounded by the first, second and side surfaces. The first conductor group includes a first conductor extending along the first surface, at least three second conductors separated from one another, and a second conductor group. The second conductors extend along the side surface from the first corner portions to the second corner portions and are electrically connected to the first conductor. The second conductor group extends along the second surface and capacitively couples the at least three second conductors. The power supply line is connected to any one portion of the second conductor group.Type: GrantFiled: June 23, 2020Date of Patent: April 9, 2024Assignee: KYOCERA CORPORATIONInventors: Hiromichi Yoshikawa, Nobuki Hiramatsu, Masamichi Yonehara
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Publication number: 20240113434Abstract: An antenna includes a first resonator extending in a first plane direction; a second resonator spaced apart from the first resonator in a first direction and extending in the first plane direction; a third resonator positioned between the first resonator and the second resonator in the first direction and magnetically or capacitively connected to or electrically connected to each of the first resonator and the second resonator; a reference conductor extending in the first plane direction, positioned between the first resonator and the second resonator in the first direction, and serving as a potential reference of the first resonator and the second resonator; and a feeder line connected to the first resonator. The reference conductor surrounds at least a part of the third resonator in the first plane direction.Type: ApplicationFiled: December 9, 2021Publication date: April 4, 2024Inventor: Hiromichi YOSHIKAWA
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Patent number: 11942691Abstract: The present disclosure provides a novel antenna. An antenna according to an example of a plurality of embodiments of the present disclosure includes a radiation conductor, a ground conductor, a first feeding line, a second feeding line, and a connecting conductor. The first feeding line is electromagnetically connected to the radiation conductor and configured to excite the radiation conductor in a first direction. The second feeding line is electromagnetically connected to the radiation conductor and configured to excite the radiation conductor in a second direction. The connecting conductor is positioned apart from the center of the radiation conductor. The connecting conductor is spaced apart from the first feeding line by a first distance. The connecting conductor is spaced apart from the second feeding line by a second distance. The first distance is substantially equal to the second distance.Type: GrantFiled: October 29, 2019Date of Patent: March 26, 2024Assignee: KYOCERA CORPORATIONInventors: Hiromichi Yoshikawa, Nobuki Hiramatsu, Masamichi Yonehara
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Publication number: 20240090050Abstract: A communication control method used in a mobile communication system including a gNB 200 and a UE performing wireless communication with the gNB 200, the communication control method including: establishing, by an RIS-UE 100B, a wireless connection with the gNB 200, the RIS-UE 100B controlling an RIS device 500 that changes a propagation direction of a radio wave incident from the gNB 200; and transmitting, by the RIS-UE 100B to the gNB 200 through wireless communication, RIS device information indicating at least one of a capability of the RIS device 500 and a control state of the RIS device 500.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: KYOCERA CORPORATIONInventors: Masato FUJISHIRO, Hiromichi YOSHIKAWA, Chiharu YAMAZAKI, Nobuki HIRAMATSU
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Publication number: 20240089744Abstract: A communication control method used in a mobile communication system including a gNB and a UE performing wireless communication with the gNB, the communication control method including: establishing, by an RIS-UE, a wireless connection with the gNB, the RIS-UE controlling an RIS device that changes a propagation direction of a radio wave incident from the gNB; and transmitting, by the gNB to the RIS-UE through the wireless communication, one or more pieces of RIS control information used to control the RIS device.Type: ApplicationFiled: November 22, 2023Publication date: March 14, 2024Applicant: KYOCERA CorporationInventors: Masato FUJISHIRO, Hiromichi YOSHIKAWA, Chiharu YAMAZAKI, Nobuki HIRAMATSU
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Patent number: 11921365Abstract: An isolator includes a first core, a second core, a nonreciprocal member, and a magnetic body. The first core and the second core extend in a first direction and are positioned side by side with a cladding therebetween in a second direction that intersects the first direction. The nonreciprocal member is in contact with at least a part of the second core while being positioned side by side with the second core in the second direction. In a magnetic field generated by the magnetic body in a portion where the nonreciprocal member is positioned, a component in a third direction perpendicular to the first direction and the second direction is greater than any component other than the component in the third direction.Type: GrantFiled: July 20, 2020Date of Patent: March 5, 2024Assignee: KYOCERA CorporationInventors: Hiromichi Yoshikawa, Naoki Matsui, Tomoya Sugita
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Patent number: 11916294Abstract: In an antenna, a first antenna element includes a first radiation conductor and a first feeder line. A second antenna element includes a second radiation conductor and a second feeder line. A second feeder line is coupled to the first feeder line such that a first component, which is a capacitance component or an inductance component, is dominant. A first coupler couples the first and second feeder lines such that a second component different from the first component is dominant. The first and second radiation conductors are arranged at interval of ½ or less of resonance wavelength. The second feeder line is coupled to the first radiation conductor such that a third component, which is the capacitance component or the inductance component, is dominant. The first coupling portion couples the first radiation conductor and the second feeder line such that a fourth component different from the third component is dominant.Type: GrantFiled: October 25, 2019Date of Patent: February 27, 2024Assignee: KYOCERA CORPORATIONInventor: Hiromichi Yoshikawa
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Patent number: 11909131Abstract: A resonance structure includes a first conductor; a second conductor that faces the first conductor in a first direction; one or more third conductors that are positioned between the first conductor and the second conductor, and that extend along a first plane including the first direction; and a fourth conductor that is connected to the first conductor and the second conductor, and that extends along the first plane. The first conductor and the second conductor extend along a second direction that intersects with the first plane. The first conductor and the second conductor are configured to be capacitively coupled via the one or more third conductors. The one or more third conductors have asymmetry with respect to a third direction that intersects with the first direction in the first plane.Type: GrantFiled: August 27, 2019Date of Patent: February 20, 2024Assignee: KYOCERA CORPORATIONInventors: Hiromichi Yoshikawa, Nobuki Hiramatsu, Hiroshi Uchimura
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Patent number: 11888231Abstract: An antenna includes a housing of a resin, a first conductor group, and a power supply line. The housing includes first and second surfaces opposite in a first direction, third and fourth surfaces opposite in a second direction, and a housing portion surrounded by the first-fourth surfaces. The third surface connects the first and second surfaces. The first conductor group includes a first conductor, a second conductor, a second conductor group, and a third conductor. The first conductor is closer to the first surface than the second surface. The second conductor is closer to the second surface than the first surface. The second conductor group extends along the third surface and capacitively couples the first and second conductors. The third conductor extends along the fourth surface and electrically connects the first and second conductors. The power supply line is connected to any one portion of the second conductor group.Type: GrantFiled: June 23, 2020Date of Patent: January 30, 2024Assignee: KYOCERA CORPORATIONInventors: Hiromichi Yoshikawa, Nobuki Hiramatsu, Masamichi Yonehara
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Patent number: 11862878Abstract: An antenna includes a radiation conductor, a ground conductor, first-fourth feeding lines, a first feeding circuit, and a second feeding circuit. The first feeding line to the fourth feeding line are configured to be electromagnetically connected to the radiation conductor. The first feeding circuit is configured to feed reversed-phased signals, which have mutually opposite phases, to the first feeding line and the third feeding line. The second feeding circuit is configured to feed reversed-phased signals, which have mutually opposite phases, to the second feeding line and the fourth feeding line. The radiation conductor is configured to be excited in a first direction due to the feed from the first feeding line and the third feeding line. The radiation conductor is configured to be excited in a second direction due to the feed from the second feeding line and the fourth feeding line.Type: GrantFiled: October 29, 2019Date of Patent: January 2, 2024Assignee: KYOCERA CORPORATIONInventors: Hiromichi Yoshikawa, Nobuki Hiramatsu, Masamichi Yonehara
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Publication number: 20230411848Abstract: An antenna includes a base, a patch conductor, a peripheral conductor surrounding the patch conductor, a first predetermined number of coupling conductors capacitively connecting the patch conductor and the peripheral conductor, the first predetermined number being at least three, and a first power feed line connected to the patch conductor. Among the first predetermined number of coupling conductors, any two form a first coupling pair composing a part of a first coupling group aligned in a first direction along a first plane, and any two form a second coupling pair composing a part of a second coupling group arranged in a second direction intersecting the first direction along the first plane. The antenna is configured to resonate in a first frequency band along a first electrical current path, and is configured to resonate in a second frequency band along a second electrical current path.Type: ApplicationFiled: July 26, 2021Publication date: December 21, 2023Inventor: Hiromichi YOSHIKAWA
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Patent number: 11831076Abstract: An antenna includes first and second antenna elements and first and second couplers. The first antenna element includes a first radiation conductor and a first feeder line. The second antenna element includes a second radiation conductor and a second feeder line. The second feeder line is coupled to the first feeder line such that a first component, which is a capacitance component or an inductance component, is dominant. The first coupler couples the first and second feeder lines such that a second component is dominant. The first radiation conductor and the second radiation conductor are arranged at an interval of ½ or less of a resonance wavelength. The second radiation conductor is coupled to the first radiation conductor with a first coupling method in which a capacitive coupling or a magnetic field coupling is dominant. The second coupler couples the first and second radiation conductors with a second coupling method.Type: GrantFiled: October 25, 2019Date of Patent: November 28, 2023Assignee: KYOCERA CORPORATIONInventor: Hiromichi Yoshikawa
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Patent number: 11831082Abstract: A structure includes: a first conductor that extends in a second direction; a second conductor that faces the first conductor in a first direction and that extends along the second direction; a third conductor configured to capacitively connect the first conductor and the second conductor; a fourth conductor that is electrically connected to the first conductor and the second conductor, and that extends along a first plane; and a first resist layer that covers the fourth conductor. The fourth conductor includes a plurality of first areas exposed to outside via a plurality of through holes of the first resist layer. Each of the first conductor and the second conductor includes one or more second areas. The first resist layer extends on the first conductor and the second conductor to cover the fourth conductor, excluding the second areas. The first areas and the second areas are arranged along the first plane.Type: GrantFiled: August 21, 2019Date of Patent: November 28, 2023Assignee: KYOCERA CORPORATIONInventors: Nobuki Hiramatsu, Hiroshi Uchimura, Hiromichi Yoshikawa, Sunao Hashimoto
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Publication number: 20230327334Abstract: A radio wave refracting plate includes a plurality of unit structures arrayed in a first plane direction and a reference conductor serving as a reference potential of the plurality of unit structures. The plurality of unit structures is represented by an equivalent circuit including three or more resonant circuits.Type: ApplicationFiled: April 10, 2023Publication date: October 12, 2023Inventors: Nobuki HIRAMATSU, Hiromichi YOSHIKAWA
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Patent number: 11782219Abstract: The optical switch 10 comprises a first waveguide 11, a second waveguide 12, and an exchanger 13. The first waveguide 11 comprises a first end E1 and a second end E2. The second waveguide 12 comprises a third end E3 and a fourth end E4, respectively located on the first end E1 side and the second end E2 side as viewed from the center of the first waveguide 11. The exchanger 13 comprises: a first waveguide section 21 configuring a directional coupler together with the first waveguide 11 and including a phase changing material 23; and a second waveguide section 22 configuring a directional coupler together with the second waveguide 12 and including a phase change material 24. The exchanger 13 inputs electromagnetic waves, input from the first end E1 and output from the first waveguide section 21, to the third end E3 side of the second waveguide section 22.Type: GrantFiled: November 5, 2019Date of Patent: October 10, 2023Assignee: KYOCERA CorporationInventors: Naoki Matsui, Tomoya Sugita, Hiromichi Yoshikawa
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Patent number: 11784402Abstract: An antenna includes a first antenna element, a second antenna element, and a first coupler. The first antenna element includes a first radiation conductor and a first feeder line and resonates in a first frequency band. The second antenna element includes a second radiation conductor and a second feeder line and resonates in a second frequency band. The second feeder line is coupled to the first feeder line such that a first component, which is one of a capacitance component and an inductance component, is dominant. The first coupler couples the first and second feeder lines such that a second component different from the first component is dominant. The first and second radiation conductors are arranged at an interval of ½ or less of a resonance wavelength in a first direction. The first and second radiation conductors are arranged to be shifted in a second direction intersecting the first direction.Type: GrantFiled: October 25, 2019Date of Patent: October 10, 2023Assignee: KYOCERA CORPORATIONInventor: Hiromichi Yoshikawa
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Publication number: 20230269863Abstract: A supply device includes a resonator and a supply target line, and the supply target line includes a first signal line, a first reference line, and a second reference line. The first reference line surrounds the first signal line. The second reference line is located away from the first reference line and surrounds the first signal line. The resonator is located between the first reference line and the second reference line and surrounds the first signal line. The resonator includes an open portion forming capacitive connection and includes a second signal line electrically or magnetically connected to the resonator.Type: ApplicationFiled: July 27, 2021Publication date: August 24, 2023Inventor: Hiromichi YOSHIKAWA
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Publication number: 20230128565Abstract: It is an object to provide an antenna that improves wireless communication with a plurality of communication devices disposed at different locations. The antenna includes an antenna body, a case including a bottom surface and side surfaces disposed around the bottom surface, the case supporting the antenna body on the bottom surface, the case being formed of metal, and a ceiling portion disposed in such a manner to face the bottom surface of the case, the ceiling portion being in contact with the side surfaces, the ceiling portion being formed of a dielectric body, and a distance between the ceiling portion and the antenna body is shorter than a half of a wavelength of a predetermined frequency serving as a frequency to be used.Type: ApplicationFiled: February 19, 2021Publication date: April 27, 2023Inventors: Hiromichi YOSHIKAWA, Satoshi ISHIKAWA
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Publication number: 20230104169Abstract: A communication module includes an antenna, a transmission circuit, a reception circuit, and a controller. The antenna includes a first antenna element at a transmission side and a second antenna element at a reception side and has an isolation characteristic between the first antenna element and the second antenna element. The transmission circuit is connected to the first antenna element. The reception circuit is connected to the second antenna element. The antenna includes a first variable phase unit configured to vary a phase of a transmission wave to be transmitted from the first antenna element and a second variable phase unit configured to vary a phase of a reception wave to be received by the second antenna element. The controller controls at least one of the first variable phase unit or the second variable phase unit to control an isolation of the antenna.Type: ApplicationFiled: March 11, 2021Publication date: April 6, 2023Inventors: Shinji ISOYAMA, Hiromichi YOSHIKAWA, Nobuki HIRAMATSU, Noriyoshi FUKUTA, Tomonao YUZAWA