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1. 发明授权

US11387571B2 Slot antenna apparatus, communication system, and method for adjusting angle of radio waves emitted from slot antenna apparatus 有权
公开(公告)号：US11387571B2
公开(公告)日：2022-07-12
申请号：US17160176
申请日：2021-01-27
申请人： FUJITSU LIMITED
发明人： Tomonori Sato , Shigekazu Kimura , Toshio Kawasaki , Yoji Ohashi
IPC分类号： H01Q21/06 , H01Q1/24 , H01Q13/28
摘要： A slot antenna apparatus that includes a waveguide including a sidewall and having an extending direction, a slot provided on the sidewall, and a dielectric member that is attached to the waveguide and is slidable in the extending direction with respect to the slot, the dielectric member including a first section and a second section, the first section covering the slot at a first slide position, the second section covering the slot at a second slide position next to the first slide position, and the first section and the second section having different relative permittivities or different thicknesses with each other.

2. 发明申请

US20210280987A1 SLOT ANTENNA APPARATUS, COMMUNICATION SYSTEM, AND METHOD FOR ADJUSTING ANGLE OF RADIO WAVES EMITTED FROM SLOT ANTENNA APPARATUS 有权
公开(公告)号：US20210280987A1
公开(公告)日：2021-09-09
申请号：US17160176
申请日：2021-01-27
申请人： FUJITSU LIMITED
发明人： TOMONORI SATO , Shigekazu Kimura , TOSHIO KAWASAKI , Yoji Ohashi
IPC分类号： H01Q21/06 , H01Q13/28 , H01Q1/24
摘要： A slot antenna apparatus that includes a waveguide including a sidewall and having an extending direction, a slot provided on the sidewall, and a dielectric member that is attached to the waveguide and is slidable in the extending direction with respect to the slot, the dielectric member including a first section and a second section, the first section covering the slot at a first slide position, the second section covering the slot at a second slide position next to the first slide position, and the first, section and the second section having different relative permittivities or different thicknesses with each other.

3. 发明授权

US10659124B2 Multiantenna communication device and coefficient update method 有权
公开(公告)号：US10659124B2
公开(公告)日：2020-05-19
申请号：US16287767
申请日：2019-02-27
申请人： FUJITSU LIMITED
发明人： Takenori Ohshima , Yoji Ohashi , Hiroyoshi Ishikawa , Atsushi Honda , Toru Maniwa , Alexander Nikolaevich Lozhkin , Toshio Kawasaki , Yuichi Utsunomiya , Tomoya Ota
IPC分类号： H04L27/00 , H04B7/06 , H04B1/04
摘要： A multiantenna communication device forms a directional beam by adding an antenna weight to respective signals of a plurality of antenna elements. The multiantenna communication device includes: a processor that executes performing distortion compensation on a transmission signal by using a distortion compensation coefficient; a plurality of power amplifiers that are provided corresponding to the antenna elements, and that amplify the transmission signal subjected to the distortion compensation by the processor; a multiplexer that multiplexes signals output from the power amplifiers to feed back; and an analog/digital (A/D) converter that A/D converts a multiplex feedback signal that is obtained by the multiplexer, wherein the processor executes updating the distortion compensation coefficient by using the multiplex feedback signal A/D converted by the A/D converter and the transmission signal.

4. 发明授权

US09817105B2 Stacked waveguide substrate, radio communication module, and radar system 有权
公开(公告)号：US09817105B2
公开(公告)日：2017-11-14
申请号：US14755917
申请日：2015-06-30
申请人： FUJITSU LIMITED
发明人： Hiroshi Ashida , Yoji Ohashi
IPC分类号： G01S13/02 , G01S7/03 , H01P1/162 , H01P5/02 , H01P3/16
CPC分类号： G01S7/03 , G01S13/0209 , H01P1/162 , H01P3/16 , H01P5/028
摘要： A stacked-waveguide substrate includes: a body configured to include a first dielectric-substrate, a second dielectric-substrate, and a third dielectric-substrate which are stacked in this order; a first conductor-pattern configured to be formed on a bottom surface of the first dielectric-substrate; a second conductor-pattern configured to be formed on a top surface of the third dielectric-substrate in a position corresponding to the first conductor-pattern; a first conductor-film configured to be located at an interface between the first dielectric-substrate and the second dielectric-substrate, and to have a first opening which faces the first conductor-pattern; a second conductor-film configured to be located at an interface between the second dielectric-substrate and the third dielectric-substrate, and to have a second opening which faces the second conductor-pattern; a first wiring line configured to cross the first opening to the first conductor-pattern; and a second wiring line configured to cross the second opening to the second conductor-pattern.

5. 发明授权

US11990963B2 Radio communication apparatus and radio transmission method 有权
公开(公告)号：US11990963B2
公开(公告)日：2024-05-21
申请号：US17958976
申请日：2022-10-03
申请人： Fujitsu Limited
发明人： Katsuhiko Tsujihata , Kazuyuki Ozaki , Shunsuke Fujio , Kunifumi Tamachi , Kazunori Sato , Tadahiro Sato , Hiroshi Okagawa , Yoji Ohashi , Yusuke Furuumi , Shinichiro Kobayashi
IPC分类号： H04B7/06 , H04B7/0456
CPC分类号： H04B7/0617 , H04B7/0456
摘要： A radio communication apparatus includes a plurality of antennas, a radio transmission unit configured to execute radio transmission processing on data to be transmitted from the plurality of antennas, and a processor connected to the radio transmission unit. The processor executes a process including acquiring beam group specification information that specifies a beam group that is capable of being formed when the data to be transmitted is transmitted, forming at least one beam included in the beam group, and correcting an envelope of a beam group using correction factors, the beam group including the at least one beam formed, the correction factors corresponding to the beam group specification information.

6. 发明申请

US20190273541A1 MULTIANTENNA COMMUNICATION DEVICE AND COEFFICIENT UPDATE METHOD 审中-公开
公开(公告)号：US20190273541A1
公开(公告)日：2019-09-05
申请号：US16287767
申请日：2019-02-27
申请人： FUJITSU LIMITED
发明人： Takenori Ohshima , Yoji Ohashi , Hiroyoshi Ishikawa , Atsushi Honda , Toru Maniwa , Alexander Nikolaevich Lozhkin , Toshio Kawasaki , Yuichi Utsunomiya , Tomoya Ota
IPC分类号： H04B7/06 , H04B1/04
摘要： A multiantenna communication device forms a directional beam by adding an antenna weight to respective signals of a plurality of antenna elements. The multiantenna communication device includes: a processor that executes performing distortion compensation on a transmission signal by using a distortion compensation coefficient; a plurality of power amplifiers that are provided corresponding to the antenna elements, and that amplify the transmission signal subjected to the distortion compensation by the processor; a multiplexer that multiplexes signals output from the power amplifiers to feed back; and an analog/digital (A/D) converter that A/D converts a multiplex feedback signal that is obtained by the multiplexer, wherein the processor executes updating the distortion compensation coefficient by using the multiplex feedback signal A/D converted by the A/D converter and the transmission signal.

7. 发明授权

US09620851B2 Wireless communication device and electronic device 有权
公开(公告)号：US09620851B2
公开(公告)日：2017-04-11
申请号：US14746099
申请日：2015-06-22
申请人： FUJITSU LIMITED
发明人： Toshihiro Shimura , Yoji Ohashi
IPC分类号： H01Q1/24 , H01Q9/04 , H01Q1/48 , H01Q13/10 , H01Q7/00 , H04B5/00
CPC分类号： H01Q1/243 , H01Q1/48 , H01Q7/00 , H01Q9/0407 , H01Q13/106 , H04B5/00
摘要： A wireless communication device includes a first housing including a first opening part; a second housing including a second opening part facing the first opening part, the second housing being arranged to face the first housing; a first resonance device including a first resonator, the first resonance device being arranged inside the first housing such that the first resonator is facing outside from the first opening part; and a second resonance device including a second resonator, the second resonance device being arranged inside the second housing such that the second resonator is facing outside from the second opening part and is facing the first resonator.

8. 发明授权

US09575170B2 Radar device and target height calculation method 有权
标题翻译：雷达装置和目标高度计算方法
公开(公告)号：US09575170B2
公开(公告)日：2017-02-21
申请号：US14016730
申请日：2013-09-03
申请人： FUJITSU TEN LIMITED , FUJITSU LIMITED
发明人： Yasuhiro Kurono , Kazuo Shirakawa , Yoji Ohashi
IPC分类号： G01S13/93 , G01S13/88 , G01S7/35 , G01S7/40 , G01S13/42 , G01S13/58 , G01S13/46
CPC分类号： G01S13/88 , G01S7/354 , G01S7/4026 , G01S13/42 , G01S13/584 , G01S13/931 , G01S2007/4034 , G01S2007/4091 , G01S2013/462 , G01S2013/9364 , G01S2013/9367 , G01S2013/9375 , G01S2013/9378
摘要： In an in-vehicle radar device, as a vertical azimuth which is an azimuth of a target in a direction perpendicular to a ground surface, a real image vertical azimuth which is an azimuth of a real image existing above ground is calculated from a reflected wave generated when a transmission signal transmitted from a transmission antenna is reflected from the target, and a virtual image vertical azimuth which is an azimuth of a virtual image existing underground is calculated from a reflected wave generated when the transmission signal transmitted from the transmission antenna is reflected from the target and reflected again from the ground surface. Next, in the in-vehicle radar device, an angle difference between the real image vertical azimuth and the virtual image vertical azimuth is calculated, and a height of the target from the ground surface is calculated using the calculated angle difference.
摘要翻译：在车载雷达装置中，作为垂直于地面的方向的目标方位角的垂直方位角，从反射波算出作为地面上存在的实像的方位角的实像垂直方位角当从发送天线发送的发送信号从目标反射时产生，并且从当从发送天线发送的发送信号反射时产生的反射波计算出作为地下虚拟图像的方位角的虚拟图像垂直方位角从目标，再次从地面反射。接下来，在车载雷达装置中，计算真实图像垂直方位角与虚像垂直方位角之间的角度差，并使用计算出的角度差来计算目标从地面的高度。

9. 发明授权

US09570811B2 Device to reflect and transmit electromagnetic wave and antenna device 有权
标题翻译：反射和传输电磁波和天线装置的装置
公开(公告)号：US09570811B2
公开(公告)日：2017-02-14
申请号：US14340337
申请日：2014-07-24
申请人： FUJITSU LIMITED
发明人： Takenori Ohshima , Yoji Ohashi , Yukio Takeda , Kazumi Kasai
IPC分类号： H01Q21/00 , H01Q19/10 , H01Q15/00 , H01Q15/22 , H01Q15/24
CPC分类号： H01Q15/0006 , H01Q15/22 , H01Q15/242 , H01Q19/10
摘要： A device includes a dielectric, wherein a front and a back of the dielectric for reflecting and transmitting an electromagnetic wave are defined by a first surface and a second surface, the first or second surface forming a half mirror, the first surface has a height that changes in spiral as leaving from the second surface, and the second surface has a height that changes in spiral as leaving from the first surface.
摘要翻译：一种器件包括电介质，其中用于反射和透射电磁波的电介质的前部和后部由第一表面和第二表面限定，第一或第二表面形成半反射镜，第一表面的高度为随着从第二表面离开而螺旋形变化，并且第二表面具有从第一表面离开而螺旋变化的高度。

10. 发明申请

US20130214871A1 WAVEGUIDE CONVERTER 有权
标题翻译：波形转换器
公开(公告)号：US20130214871A1
公开(公告)日：2013-08-22
申请号：US13767939
申请日：2013-02-15
申请人： FUJITSU LIMITED
发明人： Satoshi NAKAMURA , Yoji Ohashi , Toshihiro Shimura , Takenori Ohshima , Keiichi Oguro
IPC分类号： H01P5/107
CPC分类号： H01P1/16 , H01P5/107
摘要： A waveguide converter includes a waveguide including a hollow section through which a signal is transmitted and a first opening formed on a cross section of the hollow section in a direction orthogonal to a transmission direction of the signal, and a circuit board including on a same surface a signal line, a conductor patch connected to the signal line, and a second opening surrounding the conductor patch. The waveguide is fixed onto the circuit board. The first opening surrounds the second opening. The conductor patch includes a rectangular section which has short sides in parallel with short sides of the first opening, and has a first long side and a second long side connected to the signal line in parallel with long sides of the first opening, and protruding portions which are provided so as to touch the short sides near both ends of the second long side, respectively.
摘要翻译：波导转换器包括波导，其包括信号传递的中空部分和沿着与信号的传输方向正交的方向形成在中空部分的横截面上的第一开口，以及电路板，包括在相同的表面上信号线，连接到信号线的导体贴片和围绕导体贴片的第二开口。波导固定在电路板上。第一个开口围绕第二个开口。导体贴片包括与第一开口的短边平行的短边的矩形部分，并且具有与第一开口的长边平行地连接到信号线的第一长边和第二长边，并且突出部其分别设置成接触第二长边的两端附近的短边。

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