Patents by Inventor Naoaki Utagawa
Naoaki Utagawa 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: 9391371Abstract: An antenna device 1 has a capacitive coupling element 10 mounted on a printed circuit board 20. Strip patterns 21 to 23 are provided in a grand clearance region 20A defined on one principal surface of the printed circuit board 20. The strip pattern 21 is connected to a feeding line 29 after extending in a first direction from the connecting point with the capacitive coupling element 10. The strip pattern 22 is connected to a feeding line 30 after extending in a second direction, that is an opposite to the first direction, from the connecting point. The strip pattern 23 is connected to a ground pattern 24 after extending in a third direction from the connecting point. The capacitive coupling element 10 is disposed with an offset toward the first direction. The strip pattern 21 is shorter in length than the strip pattern 22.Type: GrantFiled: July 29, 2014Date of Patent: July 12, 2016Assignee: TDK CORPORATIONInventors: Tetsuzo Goto, Naoaki Utagawa, Yongshuai Zheng
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Patent number: 9225057Abstract: An antenna device includes an antenna element 10 and a printed circuit board 20 on which the antenna element 10 is mounted. The antenna element 10 includes a base 11 which is made of a dielectric material and a radiation conductor formed on at least one surface of the base 11. The printed circuit board 20 includes ground clearance region 23a having substantially a rectangular shape and having one side contacting an edge of the printed circuit board and other three sides surrounded by an edge line of a ground pattern, an antenna mounting region 27 provided within the ground clearance region 23a, and at least one frequency adjusting element 30 provided within the ground clearance region 27. The frequency adjusting element 30 is provided on the far side of the antenna mounting region 27 as viewed from an edge 20e of the printed circuit board 20.Type: GrantFiled: March 30, 2011Date of Patent: December 29, 2015Assignee: TDK CORPORATIONInventors: Naoaki Utagawa, Manabu Kitami, Masaki Matsushima, Takeshi Oohashi, Yasumasa Harihara
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Publication number: 20150035713Abstract: An antenna device 1 has a capacitive coupling element 10 mounted on a printed circuit board 20. Strip patterns 21 to 23 are provided in a grand clearance region 20A defined on one principal surface of the printed circuit board 20. The strip pattern 21 is connected to a feeding line 29 after extending in a first direction from the connecting point with the capacitive coupling element 10. The strip pattern 22 is connected to a feeding line 30 after extending in a second direction, that is an opposite to the first direction, from the connecting point. The strip pattern 23 is connected to a ground pattern 24 after extending in a third direction from the connecting point. The capacitive coupling element 10 is disposed with an offset toward the first direction. The strip pattern 21 is shorter in length than the strip pattern 22.Type: ApplicationFiled: July 29, 2014Publication date: February 5, 2015Applicants: TDK Corporation, TDK Dalian CorporationInventors: Tetsuzo GOTO, Naoaki UTAGAWA, Yongshuai ZHENG
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Patent number: 8525732Abstract: A radiation electrode 132 is printed on the upper surface of the dielectric body, side surface thereof, and bottom surface thereof in a folded configuration. A feeding electrode 130 and ground electrode 134 are printed on the bottom surface of the antenna elements 124. The feeding electrode 130 and radiation electrode 132 on the upper surface are opposed to each other as parallel planes. The ground electrode 134 and radiation electrode 132 are also opposite to each other as parallel planes. No electrode is formed on one of the side surfaces of the antenna element 124 that is opposed to the side surface at the side of which the radiation electrode 132 is folded.Type: GrantFiled: December 8, 2010Date of Patent: September 3, 2013Assignee: TDK CorporationInventors: Naoaki Utagawa, Kei Suzuki, Yasumasa Harihara, Masaki Matsushima, Takeshi Ohashi
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Patent number: 8421679Abstract: An antenna device includes an antenna element and a printed circuit board on which the antenna element is mounted. The antenna element includes a base, a radiation conductor formed on an upper surface of the substrate and one end of the radiation conductor being an open end, a plurality of terminal electrodes formed on a bottom surface of the substrate, and a loop conductor of a substantially U-shape. The loop conductor is arranged to face one of the terminal electrodes via a gap having a predetermined width. An antenna mounting region is provided on a upper surface of the printed circuit board to be adjacent to an edge of a long side of the printed circuit board. A feed line is led in the antenna mounting region along the edge. One and the other end of the loop conductor are connected to the feed line and a ground pattern, respectively.Type: GrantFiled: March 2, 2010Date of Patent: April 16, 2013Assignee: TDK CorporationInventors: Kei Suzuki, Masaki Matsushima, Naoaki Utagawa, Tetsuya Shibata
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Publication number: 20130088398Abstract: An antenna device includes an antenna element 10 and a printed circuit board 20 on which the antenna element 10 is mounted. The antenna element 10 includes a base 11 which is made of a dielectric material and a radiation conductor formed on at least one surface of the base 11. The printed circuit board 20 includes ground clearance region 23a having substantially a rectangular shape and having one side contacting an edge of the printed circuit board and other three sides surrounded by an edge line of a ground pattern, an antenna mounting region 27 provided within the ground clearance region 23a, and at least one frequency adjusting element 30 provided within the ground clearance region 27. The frequency adjusting element 30 is provided on the far side of the antenna mounting region 27 as viewed from an edge 20e of the printed circuit board 20.Type: ApplicationFiled: March 30, 2011Publication date: April 11, 2013Applicant: TDK CorporationInventors: Naoaki Utagawa, Manabu Kitami, Masaki Matsushima, Takeshi Oohashi, Yasumasa Harihara
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Publication number: 20110133993Abstract: A radiation electrode 132 is printed on the upper surface of the dielectric body, side surface thereof, and bottom surface thereof in a folded configuration. A feeding electrode 130 and ground electrode 134 are printed on the bottom surface of the antenna elements 124. The feeding electrode 130 and radiation electrode 132 on the upper surface are opposed to each other as parallel planes. The ground electrode 134 and radiation electrode 132 are also opposite to each other as parallel planes. No electrode is formed on one of the side surfaces of the antenna element 124 that is opposed to the side surface at the side of which the radiation electrode 132 is folded.Type: ApplicationFiled: December 8, 2010Publication date: June 9, 2011Inventors: Naoaki UTAGAWA, Kei Suzuki, Yasumasa Harihara, Masaki Matsushima, Takeshi Ohashi
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Publication number: 20100225542Abstract: An antenna device includes an antenna element and a printed circuit board on which the antenna element is mounted. The antenna element includes a base, a radiation conductor formed on an upper surface of the substrate and one end of the radiation conductor being an open end, a plurality of terminal electrodes formed on a bottom surface of the substrate, and a loop conductor of a substantially U-shape. The loop conductor is arranged to face one of the terminal electrodes via a gap having a predetermined width. An antenna mounting region is provided on a upper surface of the printed circuit board to be adjacent to an edge of a long side of the printed circuit board. A feed line is led in the antenna mounting region along the edge. One and the other end of the loop conductor are connected to the feed line and a ground pattern, respectively.Type: ApplicationFiled: March 2, 2010Publication date: September 9, 2010Inventors: Kei SUZUKI, Masaki Matsushima, Naoaki Utagawa, Tetsuya Shibata
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Patent number: 7518567Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.Type: GrantFiled: January 22, 2007Date of Patent: April 14, 2009Assignee: Yokowo Co., Ltd.Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki
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Patent number: 7466270Abstract: A plate member is adapted to be electrically grounded. A first radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A second radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A feeding pin is connected to a center part of the first radiating electrode and a center part of the second radiating electrode. The feeding pin is adapted to feed power to the first radiating electrode and the second radiating electrode. A pair of first short-circuiting pins are electrically connecting the plate member and an outer edge of the first radiating electrode at symmetrical positions relative to the feeding pin. A pair of second short-circuiting pins are electrically connecting the plate member and both ends of the second radiating electrode. The first radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.Type: GrantFiled: June 14, 2007Date of Patent: December 16, 2008Assignee: Yokowo Co., Ltd.Inventors: Naoaki Utagawa, Takashi Nozaki, Ichiro Tsuzuku, Naoki Sotoma
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Publication number: 20070290931Abstract: A plate member is adapted to be electrically grounded. A first radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A second radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A feeding pin is connected to a center part of the first radiating electrode and a center part of the second radiating electrode. The feeding pin is adapted to feed power to the first radiating electrode and the second radiating electrode. A pair of first short-circuiting pins are electrically connecting the plate member and an outer edge of the first radiating electrode at symmetrical positions relative to the feeding pin. A pair of second short-circuiting pins are electrically connecting the plate member and both ends of the second radiating electrode. The first radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.Type: ApplicationFiled: June 14, 2007Publication date: December 20, 2007Inventors: Naoaki Utagawa, Takashi Nozaki, Ichiro Tsuzuku, Naoki Sotoma
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Publication number: 20070171132Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.Type: ApplicationFiled: January 22, 2007Publication date: July 26, 2007Inventors: Naoaki Utagawa, Katsumi Chigira, Takeshi Sampo, Takashi Nozaki
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Patent number: D592193Type: GrantFiled: February 19, 2008Date of Patent: May 12, 2009Assignee: Yokowo Co., Ltd.Inventors: Naoaki Utagawa, Minoru Arata, Hideaki Kanai, Takeshi Sampo