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公开(公告)号：US20210075112A1
公开(公告)日：2021-03-11
申请号：US17040581
申请日：2019-03-25
Applicant: FUJIKURA LTD.
Inventor： Kaushal Shailendra , Ning Guan
Abstract: A dielectric loss when a signal wave is transmitted between a feed line and an antenna element via a slot is reduced. An antenna 21 includes: a dielectric substrate 28 including a recess 28b; a conductive ground layer 27 that is bonded to the dielectric substrate 28 to cover the recess 28b, and includes slots 27a-27d arranged on an inner side relative to the recess 28b; a dielectric layer 26 bonded to the conductive ground layer 27 on a side opposite to the dielectric substrate 28 relative to the conductive ground layer 27; antenna elements 29a-29d formed on a bottom 28d of the recess 28b at positions facing the slots 27a-27d; and a feed line 24a that is formed on a side opposite to the conductive ground layer 27 relative to the dielectric layer 26, and is to be electromagnetically coupled to the antenna elements 29a-29d via the slots 27a-27d.
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公开(公告)号：US20200266543A1
公开(公告)日：2020-08-20
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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公开(公告)号：US10135136B2
公开(公告)日：2018-11-20
申请号：US15445007
申请日：2017-02-28
Applicant: FUJIKURA LTD.
Inventor： Yuta Hasegawa , Ning Guan
Abstract: The present invention provides a time delay device which allows changing, in accordance with a frequency of a local signal, a delay in a radio frequency signal supplied to an antenna element and also allows reducing a degree of dependency of the delay on a radio frequency in a band which is used. Each of (i) dispersion caused by a first dispersion imparting filter which gives a delay to a first local signal and (ii) dispersion caused by a second dispersion imparting filter which gives a delay to an intermediate frequency signal generated from the first local signal and the radio frequency signal is set to have a positive or negative sign which is opposite to the sign of the other.
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公开(公告)号：US10008780B2
公开(公告)日：2018-06-26
申请号：US15121511
申请日：2014-12-10
Applicant: FUJIKURA LTD.
Inventor： Ryohei Hosono , Ning Guan , Yusuke Nakatani
CPC classification number: H01Q13/08 , H01P1/2039 , H01P5/107 , H01Q1/38 , H01Q1/48
Abstract: An antenna (1) of the present invention includes: a dielectric substrate (11); an antenna conductor (12) including: a power feeding line (12a) that extends in a first direction; and a stub (12b); and a ground conductor (13). The antenna (1) further includes: a first parasitic element (12d) facing a first side of the stub (12b) which first side is on a side of a direction opposite to the first direction; and a second parasitic element (12e) facing a second side of the stub (12b) which second side is on the first direction side.
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公开(公告)号：US20160013554A1
公开(公告)日：2016-01-14
申请号：US14766838
申请日：2014-02-28
Applicant: FUJIKURA LTD.
Inventor： Yuichiro Yamaguchi , Hiroshi Chiba , Hiroiku Tayama , Ning Guan
CPC classification number: H01Q7/00 , H01Q1/3275 , H01Q1/52 , H01Q5/385 , H01Q21/0087 , H01Q21/06 , H01Q21/28 , H01Q21/30
Abstract: An integrated antenna (1) includes: a first loop antenna (11) having a first annular antenna element (11a); and a second loop antenna (13) having a second annular antenna element (13). The second annular antenna element (13) is arranged, on a surface identical to that where the first annular antenna element (13a) is arranged, so as to surround the first annular antenna element (13a).
Abstract translation: 集成天线（1）包括：具有第一环形天线元件（11a）的第一环形天线（11）; 和具有第二环形天线元件（13）的第二环形天线（13）。 第二环形天线元件（13）布置在与布置有第一环形天线元件（13a）的表面相同的表面上，以围绕第一环形天线元件（13a）。
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Patent Agency Ranking
公开(公告)号：US20130249748A1
公开(公告)日：2013-09-26
申请号：US13896689
申请日：2013-05-17
Applicant: FUJIKURA LTD.
Inventor： Takeshi Togura , Ning Guan , Hiroki Nitta , Yuichiro Yamaguchi , Yuki Noguchi
IPC: H01Q1/32
CPC classification number: H01Q1/32 , H01Q1/325 , H01Q1/3275 , H01Q1/36 , H01Q1/38 , H01Q1/42 , H01Q5/364 , H01Q7/00
Abstract: An antenna device includes: a plate-like antenna having an electrically conductive path arranged in a two-dimensional manner, the electrically conductive path having a meander shape which is made up of at least one return pattern; and a base member, while causing the antenna to be spaced away from an outer surface of a body containing an electrically conductive material layer of a movable body, holding the antenna in such a manner as to conform to the outer surface, the base member being made from a dielectric material.
Abstract translation: 天线装置包括：具有以二维方式布置的导电路径的板状天线，所述导电路径具有由至少一个返回图案构成的曲折形状; 以及基部构件，在使天线与包含可移动体的导电材料层的主体的外表面间隔开的同时，以与外表面一致的方式保持天线，基底构件 由介电材料制成。
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公开(公告)号：US11329393B2
公开(公告)日：2022-05-10
申请号：US16466467
申请日：2017-11-09
Applicant: FUJIKURA LTD.
Inventor： Yuta Hasegawa , Ning Guan
Abstract: The present invention provides an antenna device that has a radiation pattern whose peak direction is independent of a frequency of an electromagnetic wave emitted. The antenna device includes: a ground layer (11) made of an electric conductor; a plurality of array antennas (22) provided in a layer above the ground layer (11); and a Rotman lens (32) provided in a layer below the ground layer (11). Each array antenna (22i) includes: a power feed line (23Li) at a center of which a feedpoint (23Pi) is located; and a plurality of antenna elements (241i through 248i and 251i through 258i) connected to the power feed line (23Li), and has a point symmetric shape with respect to the feedpoint (23Pi) as a center of symmetry. Each feedpoint (23Pi) is coupled to any one output port (322i) of the Rotman lens (32) via a slot (111i) provided in the ground layer (11).
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公开(公告)号：US11223122B2
公开(公告)日：2022-01-11
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：US10978801B2
公开(公告)日：2021-04-13
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：US20190207284A1
公开(公告)日：2019-07-04
申请号：US16328050
申请日：2017-08-08
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi , Ning Guan
IPC: H01P3/12
Abstract: A transmission line includes a post-wall waveguide which includes a dielectric substrate on which a pair of post-walls is formed and a first conductor layer and a second conductor layer opposed to each other with the dielectric substrate interposed therebetween and in which a region surrounded by the pair of post-walls, the first conductor layer, and the second conductor layer is a waveguide region, a waveguide tube having a hollow rectangular shape, being connected with the first conductor layer so as to cover an opening portion formed in a side wall, and in which an inside communicates with the waveguide region through an opening formed in the first conductor layer, and a wire member which is arranged such that through the opening, a first end is located inside the dielectric substrate and a second end is located in the waveguide tube.
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