Patents by Inventor Kouji Soekawa
Kouji Soekawa 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: 9276322Abstract: There is provided an antenna device that includes a substrate, a slot provided in the substrate so that the slot includes a cut opening that is close to an edge of the substrate and the slot includes a crooked portion, a conductor section configured to include a slit in an area of the substrate, the area being sandwiched by the slot in the crooked portion, and an antenna that is placed close to the conductor section and is side by side with a surface of the substrate.Type: GrantFiled: August 30, 2012Date of Patent: March 1, 2016Assignee: FUJITSU LIMITEDInventors: Yasumitsu Ban, Takashi Yamagajo, Kouji Soekawa
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Patent number: 9124352Abstract: A data communication terminal apparatus is disclosed that includes a printed circuit board, a ground plane formed in the printed circuit board, a connector disposed on an end portion of the printed circuit board, and an antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane.Type: GrantFiled: December 14, 2012Date of Patent: September 1, 2015Assignee: FUJITSU LIMITEDInventor: Kouji Soekawa
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Patent number: 9124007Abstract: An antenna apparatus including: a first and second antenna elements which transmit or receive radio signal; a ground pattern; and a wiring pattern which is provided on a line segment connecting the first and second antenna elements, and directly connected to the ground pattern, wherein a circumventing path is formed by the wiring pattern and a part of the ground pattern.Type: GrantFiled: December 7, 2010Date of Patent: September 1, 2015Assignee: FUJITSU LIMITEDInventors: Takashi Yamagajo, Yasumitsu Ban, Shinsuke Shimahashi, Kouji Soekawa
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Patent number: 9054426Abstract: There is provided a radio apparatus which includes an antenna device and a housing to which the antenna device is attached. The antenna device includes a substrate includes an electrically conductive layer with a slit. The slit is formed at an end of the electrically conductive layer so that the slit includes an opening end. The antenna element is electrically coupled with the electrically conductive layer across the opening end via a matching circuit, and receives an electric power through one end of the antenna element.Type: GrantFiled: September 22, 2011Date of Patent: June 9, 2015Assignee: FUJITSU LIMITEDInventor: Kouji Soekawa
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Patent number: 8843185Abstract: A slide-type wireless terminal apparatus includes a first casing and a second casing slidable relative to the first casing. The wireless terminal apparatus includes a first circuit board which is provided in the first casing, an antenna which is provided in the first casing, a second circuit board which is provided in the second casing, a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board, and a guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member.Type: GrantFiled: September 22, 2011Date of Patent: September 23, 2014Assignee: Fujitsu LimitedInventors: Masaru Kanazawa, Zhao Liu, Kouji Soekawa
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Patent number: 8692724Abstract: A communication apparatus includes: a wiring group to couple wiring on a first board to wiring on a second board; antenna wiring including one end coupled to a feeding unit on the first board and the other end coupled to one end of a capacitor, the other end of the capacitor being coupled to a ground conductor of the second board; and ground conductor wiring for an antenna, disposed between the antenna wiring and the wiring group, including one end coupled to a ground conductor of the first board and the other end coupled to the ground conductor of the second board.Type: GrantFiled: April 10, 2012Date of Patent: April 8, 2014Assignee: Fujitsu LimitedInventor: Kouji Soekawa
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Publication number: 20140094230Abstract: There is provided a portable communication apparatus which includes a main antenna including a first element and a second element to be capable of being resonant at a first and a third frequencies, respectively, the third frequency being one between the first frequency and a second frequency higher than the first frequency, a switch provided between the main antenna and a high-frequency circuit, a capacitor disposed in parallel to the switch, the capacitor being connected between the main antenna and the high-frequency circuit, and a control circuit configured to control the switch to turn on and off such that when the switch is in an ON state, the first element is resonant at the first frequency, while when the switch is in an OFF state, the main antenna is coupled to the high-frequency circuit via the capacitor, and the second element is resonant at the second frequency.Type: ApplicationFiled: August 23, 2013Publication date: April 3, 2014Applicant: FUJITSU LIMITEDInventors: Kouji SOEKAWA, Shinya TACHIBANA
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Patent number: 8686915Abstract: An antenna device includes a board made of dielectric material, having first and second power feed parts; a first antenna element connected to the first power feed part, using a first wavelength; a second antenna element connected to the second power feed part, using a second wavelength; a ground formed on the board, having a first side and a second side respectively having different lengths and extending in different directions, the length of the first side, compared with the length of second side, which is approximate to a ¼ length of the first wavelength and a ¼ length of the second wavelength; and a parasitic element connected to the ground, which is not parallel to the first side of the ground, a length of the parasitic element is approximate to ¼ length of the second wavelength and an interval of the parasitic element and the second power feed part is less than equals the ¼ length of the second wavelength.Type: GrantFiled: April 25, 2011Date of Patent: April 1, 2014Assignee: Fujitsu LimitedInventors: Masaru Kanazawa, Kouji Soekawa
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Publication number: 20130244596Abstract: A data communication terminal apparatus is disclosed that includes a printed circuit board, a ground plane formed in the printed circuit board, a connector disposed on an end portion of the printed circuit board, and an antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane.Type: ApplicationFiled: December 14, 2012Publication date: September 19, 2013Inventor: Kouji SOEKAWA
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Publication number: 20130063313Abstract: There is provided an antenna device that includes a substrate, a slot provided in the substrate so that the slot includes a cut opening that is close to an edge of the substrate and the slot includes a crooked portion, a conductor section configured to include a slit in an area of the substrate, the area being sandwiched by the slot in the crooked portion, and an antenna that is placed close to the conductor section and is side by side with a surface of the substrate.Type: ApplicationFiled: August 30, 2012Publication date: March 14, 2013Applicant: FUJITSU LIMITEDInventors: Yasumitsu BAN, Takashi YAMAGAJO, Kouji SOEKAWA
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Publication number: 20130021210Abstract: A wireless communication apparatus performs a communication using high-frequency wave having a wavelength of ?. The apparatus includes a circuit board including a feeder point and a ground, an antenna element connected to the feeder point, and a wiring element including a first end portion and a second end portion different from the first end portion, the first end portion being connected to one of the feeder point and the antenna element, the second end portion being connected to the ground, wherein the antenna element has a length of ?/4, and the wiring element has a length of 3?/4.Type: ApplicationFiled: May 24, 2012Publication date: January 24, 2013Applicant: FUJITSU LIMITEDInventor: Kouji SOEKAWA
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Publication number: 20120287010Abstract: A communication apparatus includes: a wiring group to couple wiring on a first board to wiring on a second board; antenna wiring including one end coupled to a feeding unit on the first board and the other end coupled to one end of a capacitor, the other end of the capacitor being coupled to a ground conductor of the second board; and ground conductor wiring for an antenna, disposed between the antenna wiring and the wiring group, including one end coupled to a ground conductor of the first board and the other end coupled to the ground conductor of the second board.Type: ApplicationFiled: April 10, 2012Publication date: November 15, 2012Applicant: FUJITSU LIMITEDInventor: Kouji SOEKAWA
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Publication number: 20120119963Abstract: There is provided a radio apparatus which includes an antenna device and a housing to which the antenna device is attached. The antenna device includes a substrate includes an electrically conductive layer with a slit. The slit is formed at an end of the electrically conductive layer so that the slit includes an opening end. The antenna element is electrically coupled with the electrically conductive layer across the opening end via a matching circuit, and receives an electric power through one end of the antenna element.Type: ApplicationFiled: September 22, 2011Publication date: May 17, 2012Applicant: FUJITSU LIMITEDInventor: Kouji SOEKAWA
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Publication number: 20120115336Abstract: A slide-type wireless terminal apparatus includes a first casing and a second casing slidable relative to the first casing. The wireless terminal apparatus includes a first circuit board which is provided in the first casing, an antenna which is provided in the first casing, a second circuit board which is provided in the second casing, a sliding member which is disposed between the first circuit board and the second circuit board, the sliding member including a portion which faces the antenna, the sliding member having electrical conductivity and being electrically connected to the first circuit board, and a guide member which is provided in the second casing, the guide member being for guiding the sliding member such that the sliding member slides relative to the guiding member.Type: ApplicationFiled: September 22, 2011Publication date: May 10, 2012Applicant: FUJITSU LIMITEDInventors: Masaru Kanazawa, Zhao Liu, Kouji Soekawa
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Publication number: 20120050129Abstract: An antenna device includes a board made of dielectric material, having first and second power feed parts; a first antenna element connected to the first power feed part, using a first wavelength; a second antenna element connected to the second power feed part, using a second wavelength; a ground formed on the board, having a first side and a second side respectively having different lengths and extending in different directions, the length of the first side, compared with the length of second side, which is approximate to a ¼ length of the first wavelength and a ¼ length of the second wavelength; and a parasitic element connected to the ground, which is not parallel to the first side of the ground, a length of the parasitic element is approximate to ¼ length of the second wavelength and an interval of the parasitic element and the second power feed part is less than equals the ¼ length of the second wavelength.Type: ApplicationFiled: April 25, 2011Publication date: March 1, 2012Applicant: FUJITSU LIMITEDInventors: Masaru Kanazawa, Kouji Soekawa
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Publication number: 20110140973Abstract: An antenna apparatus including: a first and second antenna elements which transmit or receive radio signal; a ground pattern; and a wiring pattern which is provided on a line segment connecting the first and second antenna elements, and directly connected to the ground pattern, wherein a circumventing path is formed by the wiring pattern and a part of the ground pattern.Type: ApplicationFiled: December 7, 2010Publication date: June 16, 2011Applicant: FUJITSU LIMITEDInventors: Takashi Yamagajo, Yasumitsu Ban, Shinsuke Shimahashi, Kouji Soekawa
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Patent number: 7940219Abstract: An antenna adaptable to a plurality of frequencies is comprised of a first element that is connected to a feeding point (feeding portion) for operation and a second element that is connected to a grounding point (grounding portion) in proximity to the first element to be operated by coupling feeding with the first element and is configured to be operated at either or both of a first frequency and a second frequency higher than the first frequency.Type: GrantFiled: March 20, 2006Date of Patent: May 10, 2011Assignee: Fujitsu LimitedInventors: Kouji Soekawa, Masaru Kanazawa
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Publication number: 20100295740Abstract: An antenna device for use in a wireless communication device includes: a linear antenna element; a feeding portion including first and second feed terminals arranged apart face-to-face; a linear branch element which branches off from the linear antenna element at an intermediate position of the linear antenna element; and a ground conductor connected to an end of the linear branch element. The first feed terminal is connected to an end of the linear antenna element, and the second feed terminal is connected to a power supply unit. Alternatively, the antenna device may be provided with a capacitor which connects an end of the linear antenna element and a connection line connected to the power supply unit.Type: ApplicationFiled: May 13, 2010Publication date: November 25, 2010Applicant: FUJITSU LIMITEDInventor: Kouji SOEKAWA
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Patent number: 7830315Abstract: The present invention relates to an antenna apparatus capable of multifrequency resonance and realizes downsizing and multifrequency resonance. The present invention relates to an antenna apparatus capable of multifrequency resonance or a radio communicating apparatus (e.g., portable phone) including the antenna apparatus; toward a feed element connected to and supplied with electricity from a feeding unit of a circuit substrate (printed circuit substrate), a non-feed element is disposed with over the circuit substrate or outside the circuit substrate; and the feed side or the open side of the feed element is electromagnetically coupled to the non-feed element to enable resonance in the frequency band of the non-feed element in addition to resonance in the frequency band of the feed element.Type: GrantFiled: September 28, 2007Date of Patent: November 9, 2010Assignee: Fujitsu LimitedInventors: Yuuichi Sugiyama, Kouji Soekawa
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Publication number: 20080150810Abstract: The present invention relates to an antenna apparatus capable of multifrequency resonance and realizes downsizing and multifrequency resonance. The present invention relates to an antenna apparatus capable of multifrequency resonance or a radio communicating apparatus (e.g., portable phone) including the antenna apparatus; toward a feed element connected to and supplied with electricity from a feeding unit of a circuit substrate (printed circuit substrate), a non-feed element is disposed with over the circuit substrate or outside the circuit substrate; and the feed side or the open side of the feed element is electromagnetically coupled to the non-feed element to enable resonance in the frequency band of the non-feed element in addition to resonance in the frequency band of the feed element.Type: ApplicationFiled: September 28, 2007Publication date: June 26, 2008Applicant: FUJITSU LIMITEDInventors: Yuuichi SUGIYAMA, Kouji SOEKAWA