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公开(公告)号：US09300037B2
公开(公告)日：2016-03-29
申请号：US14170697
申请日：2014-02-03
Applicant: Fujikura Ltd.
Inventor： Hiroiku Tayama , Ning Guan
CPC classification number: H01Q1/50 , H01Q1/38 , H01Q9/42 , H01R2201/02 , Y10T29/49018
Abstract: An antenna device (10) includes: an antenna (100) including a radiating element (101) and an internal ground (103); a coaxial cable (200) whose internal conductor (204) is connected with the radiating element (101) and whose external conductor (203) is connected with the internal ground (103); and an external ground (500) capacitive-coupled with the external conductor (203) of the coaxial cable (200).
Abstract translation: 天线装置（10）包括：天线（100），包括辐射元件（101）和内部接地（103）; 同轴电缆（200），其内部导体（204）与所述辐射元件（101）连接，并且其外部导体（203）与所述内部接地（103）连接; 以及与同轴电缆（200）的外部导体（203）电容耦合的外部接地（500）。
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42.发明授权公开(公告)号：US08542970B2
公开(公告)日：2013-09-24
申请号：US13723566
申请日：2012-12-21
Applicant: Fujikura Ltd.
Inventor： Kensuke Ogawa , Ning Guan , Ken Sakuma
IPC: G02B6/10
CPC classification number: G02B6/10 , G02B6/124 , G02B6/29325 , G02B6/29394
Abstract: There is provided a planar optical waveguide element including a core, the core including first and second portions and a gap portion that is positioned in a center of a width direction of the core between the first and second portions so as to extend in a light waveguide direction. The gap portion has a lower refractive index than that of the first and second portions, and a single mode propagated in the waveguide element has a span crossing the first and second portions.
Abstract translation: 提供了一种包括芯的平面光波导元件，所述芯包括第一和第二部分，以及间隙部分，位于第一和第二部分之间的芯的宽度方向的中心，以便在光波导 方向。 间隙部分具有比第一和第二部分的折射率低的折射率，并且在波导元件中传播的单一模式具有跨越第一和第二部分的跨度。
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公开(公告)号：US11342676B2
公开(公告)日：2022-05-24
申请号：US17040590
申请日：2019-03-25
Applicant: FUJIKURA LTD.
Inventor： Kaushal Shailendra , Ning Guan
Abstract: To improve a gain of an antenna. An antenna 1 includes a dielectric layer 6, a conductive ground layer 7 bonded to the layer 6 and including active slots 7c-7f aligned at regular intervals, aligned active elements 9c-9f formed facing the active slots 7c-7f, respectively, first passive elements 9b, 9a aligned with and extending from one end of a row of the active elements 9c-9f, second passive elements 9g, 9h aligned with and extending from the other end of the row, a feed line 4a formed on a side opposite to the layer 7 with respect to the layer 6, to be electromagnetically coupled to the active elements 9c-9f via the active slots 7c-7f. The second passive elements 9g, 9h are arranged in line symmetry with the first passive elements 9b, 9a with respect to a line 9z passing through the center of the row and perpendicular to the row.
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公开(公告)号：US20220029294A1
公开(公告)日：2022-01-27
申请号：US17430811
申请日：2020-07-08
Applicant: FUJIKURA LTD.
Inventor： Shailendra Kaushal , Ning Guan , Asahi Kan
Abstract: An antenna includes a dielectric layer, a conductive ground layer formed on a first main surface of the dielectric layer, and radiation elements formed on a second main surface of the dielectric layer and are conductive. The first radiation element includes a first non-uniform width part that has a width in a direction parallel to a first side in a linear shape opposed to a first vertex, and the width of the first non-uniform width part gradually decreases in a direction from the first side to the first vertex. The second radiation element includes a second non-uniform width part that has a width in a direction parallel to a second side in a linear shape opposed to a second vertex, and the width of the second non-uniform width part gradually decreases in a direction from the second side to the second vertex.
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公开(公告)号：US11223132B2
公开(公告)日：2022-01-11
申请号：US16647947
申请日：2018-09-13
Applicant: Fujikura Ltd.
Inventor： Shailendra Kaushal , Ning Guan
Abstract: An antenna device includes line-shaped feeding conductors arranged so as to face each patch antenna array and performing electromagnetic coupling feeding on each of the patch antennas, from a wiring-side feeding portions formed at a position intersecting a slot when viewed from the normal direction of a first surface. The patch antennas include an electrode which is arranged so as to face the wiring-side feeding portion, between two radiation elements arranged apart in the first direction, and is electromagnetically coupled from the wiring-side feeding portion. The electrode and each of the two radiation elements are electrically coupled in the first direction.
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Patent Agency Ranking
公开(公告)号：US10862208B2
公开(公告)日：2020-12-08
申请号：US15771546
申请日：2016-09-23
Applicant: FUJIKURA LTD.
Inventor： Yuta Hasegawa , Ning Guan
Abstract: Provided is a phased array antenna in which a delay time of a radio frequency signal supplied to each antenna element is not dependent on frequency. Each feeding circuit (Fi) of the phased array antenna (1) includes: a time delay element (TDi) configured to impart a time delay Δti to a sum signal VIF+LO(t) which is obtained by adding an intermediate frequency signal VIF(t) and a local signal VLO(t); a demultiplexer (DPi) configured to demultiplex a resulting delayed sum signal VIF+LO(t−Δti) so as to provide a delayed intermediate frequency signal VIF(t−Δti) and a delayed local signal VLO(t−Δti); and a transmission mixer (TMXi) configured to multiply the delayed intermediate frequency signal VIF(t−Δti) by the delayed local signal VLO(t−Δti) so as to provide a delayed radio frequency signal VRF(t−Δti), each feeding circuit Fi being configured to supply the delayed radio frequency signal VRF(t−Δti) to a corresponding antenna element (Ai).
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公开(公告)号：US20200335860A1
公开(公告)日：2020-10-22
申请号：US16954616
申请日：2018-10-05
Applicant: FUJIKURA LTD.
Inventor： Yuta Hasegawa , Ning Guan
Abstract: To stabilize radiation characteristics of a radiation element by reducing bending deformation of the radiation element and widen a band of an antenna. An antenna includes: a first flexible dielectric layer; a conductive pattern layer formed on a surface of the first dielectric layer; a second flexible dielectric layer joined to the first dielectric layer on a side opposite to the conductive pattern layer with respect to the first dielectric layer; a conductive ground layer formed between the first dielectric layer and the second dielectric layer; a rigid dielectric substrate joined to the second dielectric layer on a side opposite to the conductive ground layer with respect to the second dielectric layer; and an antenna pattern layer formed between the second dielectric layer and the dielectric substrate and including one or more radiation elements, the conductive pattern layer including a feed line for supplying electric power to the radiation elements.
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公开(公告)号：US20200259255A1
公开(公告)日：2020-08-13
申请号：US15776274
申请日：2016-09-13
Applicant: FUJIKURA LTD.
Inventor： Yuta Hasegawa , Ning Guan
IPC: H01Q3/26 , H04B10/2575
Abstract: Provided is a phased array antenna which can be used in the millimeter wave band and whose cost is lower than that of a conventional phased array antenna. The phased array antenna (1) includes: an optical modulator (OM) configured to generate a signal light beam SL by carrying out intensity modulation on a carrier light beam CL by use of a sum signal VIF+LO(t), the sum signal VIF+LO(t) being obtained by adding an intermediate frequency signal VIF(t) and a local signal VLO(t); and a time delay device (TD) configured to generate delayed signal light beams SL′1, SL′2, . . . and SL′n by imparting time delays Δt1, Δt2, . . . and Δtn to the signal light beam SL. Each feeding circuit (Fi) generates, from a corresponding delayed signal light beam SL′i, a delayed radio frequency signal VRF(t−Δti) to be supplied to an antenna element (Ai).
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公开(公告)号：US10686515B2
公开(公告)日：2020-06-16
申请号：US16486206
申请日：2017-12-18
Applicant: Fujikura Ltd.
Inventor： Kiyoshi Kobayashi , Ning Guan
IPC: H04B7/08 , H04B1/00 , H01Q21/29 , H04B7/06 , H04B7/0404
Abstract: A wireless communication system includes a plurality of wireless stations. Each of at least two of the plurality of wireless stations includes, a first antenna transmitting a radio wave in a first frequency band, a second antenna transmitting a radio wave in a second frequency band lower in frequency than the first frequency band, a first transceiver transmitting and receiving a main signal in the first frequency band, and a second transceiver transmitting and receiving a control signal in the second frequency band. At least one of the at least two wireless stations includes, a variable beam antenna making a beam direction variable as the first antenna, a wide angle antenna having a radiation range equal to or wider than a variable range of the beam direction as the second antenna, and a controller controlling the beam direction of the variable beam antenna according to the control signal.
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公开(公告)号：US20200059291A1
公开(公告)日：2020-02-20
申请号：US16486206
申请日：2017-12-18
Applicant: Fujikura Ltd.
Inventor： Kiyoshi Kobayashi , Ning Guan
IPC: H04B7/08 , H04B1/00 , H04B7/0404 , H04B7/06 , H01Q21/29
Abstract: A wireless communication system includes a plurality of wireless stations. Each of at least two of the plurality of wireless stations includes, a first antenna transmitting a radio wave in a first frequency band, a second antenna transmitting a radio wave in a second frequency band lower in frequency than the first frequency band, a first transceiver transmitting and receiving a main signal in the first frequency band, and a second transceiver transmitting and receiving a control signal in the second frequency band. At least one of the at least two wireless stations includes, a variable beam antenna making a beam direction variable as the first antenna, a wide angle antenna having a radiation range equal to or wider than a variable range of the beam direction as the second antenna, and a controller controlling the beam direction of the variable beam antenna according to the control signal.
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