Patents by Inventor Yuji Kaminishi
Yuji Kaminishi 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: 20220131516Abstract: A diplexer includes a low-band band pass filter between a common input/output terminal and a low-band input/output terminal and a high-band band pass filter between the common input/output terminal and a high-band input/output terminal, wherein the low-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the low-band input/output terminal, the high-band band pass filter includes LC resonators including a first-stage LC resonator to a final-stage LC resonator in order from the common input/output terminal toward the high-band input/output terminal, a matching capacitor is between the common input/output terminal and the low-band band pass filter, and the capacitance of a capacitor of the first-stage LC resonator of the low-band band pass filter is smaller than the capacitance of a capacitor of the final-stage LC resonator.Type: ApplicationFiled: January 7, 2022Publication date: April 28, 2022Inventors: Yuutarou YAMAZAKI, Hiroto MOTOYAMA, Tetsuo TANIGUCHI, Yuji KAMINISHI
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Patent number: 10236856Abstract: A diplexer includes a first filter circuit including a first loop inductor defining a first loop plane and a second loop inductor defining a second loop plane, a second filter circuit adjacent to the first filter circuit, and a first via hole conductor that electrically connects an input/output terminal, the first filter circuit and the second filter circuit to each other. The first loop plane faces the second loop plane while protruding beyond the second loop plane in a first direction. The first via hole conductor is provided relative to the first loop inductor in a second direction from the first loop plane toward the second loop plane, and is superposed with a portion of the first loop plane that protrudes beyond the second loop plane when viewed in the second direction.Type: GrantFiled: September 19, 2017Date of Patent: March 19, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventor: Yuji Kaminishi
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Publication number: 20180006625Abstract: A diplexer includes a first filter circuit including a first loop inductor defining a first loop plane and a second loop inductor defining a second loop plane, a second filter circuit adjacent to the first filter circuit, and a first via hole conductor that electrically connects an input/output terminal, the first filter circuit and the second filter circuit to each other. The first loop plane faces the second loop plane while protruding beyond the second loop plane in a first direction. The first via hole conductor is provided relative to the first loop inductor in a second direction from the first loop plane toward the second loop plane, and is superposed with a portion of the first loop plane that protrudes beyond the second loop plane when viewed in the second direction.Type: ApplicationFiled: September 19, 2017Publication date: January 4, 2018Inventor: Yuji KAMINISHI
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Patent number: 9780441Abstract: This disclosure provides an antenna and a wireless communication device that includes the antenna in which a high-order mode can be controlled while maintaining good radiation characteristics in both the fundamental mode and high-order mode. The antenna has a radiation electrode provided on a surface of a dielectric substrate and a branch electrode portion that branches from the radiation electrode portion at a branch point near the feeding port toward a vicinity of a position of the radiation electrode at which a maximum voltage of a high-order mode is generated.Type: GrantFiled: August 13, 2012Date of Patent: October 3, 2017Assignee: Murata Manufacturing Co., Ltd.Inventors: Kunihiro Komaki, Masayuki Atokawa, Masahiro Izawa, Yuji Kaminishi, Tsuyoshi Mukai
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Patent number: 8791866Abstract: A non-feeding element is provided with a proximity-providing gap from a feeding element, and a resonant state is generated there by capacitive coupling. The non-feeding element resonates at a frequency different from a resonant frequency of the feeding element. The feeding element and the non-feeding element have alongside-ground-terminal extending portions spaced from an edge surface at one end of a ground surface formed on the circuit board and to extend in a direction along the edge surface at the one end of the ground surface. The feeding element and/or the non-feeding element is formed three-dimensionally with a plurality of bending portions so that at least parts of the alongside-ground-terminal extending portion of the feeding element and the ground-terminal extending portion of the non-feeding element have substantially the same amount of spacing from the ground surface.Type: GrantFiled: April 20, 2012Date of Patent: July 29, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Takashi Ishihara, Jin Sato, Yuji Kaminishi, Shigekazu Ito
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Publication number: 20130141302Abstract: A non-feeding element is provided with a proximity-providing gap from a feeding element, and a resonant state is generated there by capacitive coupling. The non-feeding element resonates at a frequency different from a resonant frequency of the feeding element. The feeding element and the non-feeding element have alongside-ground-terminal extending portions spaced from an edge surface at one end of a ground surface formed on the circuit board and to extend in a direction along the edge surface at the one end of the ground surface. The feeding element and/or the non-feeding element is formed three-dimensionally with a plurality of bending portions so that at least parts of the alongside-ground-terminal extending portion of the feeding element and the ground-terminal extending portion of the non-feeding element have substantially the same amount of spacing from the ground surface.Type: ApplicationFiled: April 20, 2012Publication date: June 6, 2013Applicant: Murata Manufacturing Co., Ltd.Inventors: Takashi ISHIHARA, Jin SATO, Yuji KAMINISHI, Shigekazu ITO
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Patent number: 8378909Abstract: In an antenna, a first type radiation electrode and a second type radiation electrode are provided on the surface of a dielectric base, which has a predetermined external shape, or embedded in the dielectric base. The first type radiation electrode is provided with an open terminal at one end thereof and a feeding terminal at the other end thereof so as to constitute a monopole type antenna. The second type radiation electrode is provided with a capacitive-coupling feeding electrode at one end thereof and a ground connection terminal at the other end thereof so as to constitute a capacitive feed antenna. The one end of the first type radiation electrode is located opposite to the feeding electrode of the second type radiation electrode when viewed in the direction of the length of the dielectric base.Type: GrantFiled: August 27, 2009Date of Patent: February 19, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Jin Sato, Yuji Kaminishi
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Publication number: 20120306703Abstract: This disclosure provides an antenna and a wireless communication device that includes the antenna in which a high-order mode can be controlled while maintaining good radiation characteristics in both the fundamental mode and high-order mode. The antenna has a radiation electrode provided on a surface of a dielectric substrate and a branch electrode portion that branches from the radiation electrode portion at a branch point near the feeding port toward a vicinity of a position of the radiation electrode at which a maximum voltage of a high-order mode is generated.Type: ApplicationFiled: August 13, 2012Publication date: December 6, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Kunihiro KOMAKI, Masayuki ATOKAWA, Masahiro IZAWA, Yuji KAMINISHI, Tsuyoshi MUKAI
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Patent number: 8314737Abstract: A non-feeding element is provided with a proximity-providing gap from a feeding element that receives RF power from a feeding point on a circuit board, and a resonant state is generated there by capacitive coupling. The non-feeding element is formed so as to resonate at a frequency different from a resonant frequency of the feeding element. The feeding element and the non-feeding element have alongside-ground-terminal extending portions formed so as to be spaced from an edge surface (a ground terminal) at one end of a ground surface formed on the circuit board and to extend in a direction along the edge surface at the one end of the ground surface.Type: GrantFiled: November 6, 2008Date of Patent: November 20, 2012Assignee: Murata Manufacturing Co., Ltd.Inventors: Takashi Ishihara, Jin Sato, Yuji Kaminishi, Shigekazu Ito
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Publication number: 20090303140Abstract: In an antenna, a first type radiation electrode and a second type radiation electrode are provided on the surface of a dielectric base, which has a predetermined external shape, or embedded in the dielectric base. The first type radiation electrode is provided with an open terminal at one end thereof and a feeding terminal at the other end thereof so as to constitute a monopole type antenna. The second type radiation electrode is provided with a capacitive-coupling feeding electrode at one end thereof and a ground connection terminal at the other end thereof so as to constitute a capacitive feed antenna. The one end of the first type radiation electrode is located opposite to the feeding electrode of the second type radiation electrode when viewed in the direction of the length of the dielectric base.Type: ApplicationFiled: August 27, 2009Publication date: December 10, 2009Applicant: Murata Manufacturing Co., Ltd.Inventors: Jin SATO, Yuji KAMINISHI
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Publication number: 20090115671Abstract: A non-feeding element is provided with a proximity-providing gap from a feeding element that receives RF power from a feeding point on a circuit board, and a resonant state is generated there by capacitive coupling. The non-feeding element is formed so as to resonate at a frequency different from a resonant frequency of the feeding element. The feeding element and the non-feeding element have alongside-ground-terminal extending portions formed so as to be spaced from an edge surface (a ground terminal) at one end of a ground surface formed on the circuit board and to extend in a direction along the edge surface at the one end of the ground surface.Type: ApplicationFiled: November 6, 2008Publication date: May 7, 2009Inventors: Takashi Ishihara, Jin Sato, Yuji Kaminishi, Shigekazu Ito