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公开(公告)号：US09831897B2
公开(公告)日：2017-11-28
申请号：US15187987
申请日：2016-06-21
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
CPC classification number: H04B1/0057 , H01P5/182 , H04L5/14
Abstract: A directional coupler includes rectangular waveguides each including: a pair of protruding sections which are provided on a first narrow wall or a second narrow wall, which are provided symmetrically with respect to an opening, and which protrude from one of the first and second narrow walls toward the other; and other protruding section which protrudes from the second narrow wall toward the opening.
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公开(公告)号：US20160380330A1
公开(公告)日：2016-12-29
申请号：US15187987
申请日：2016-06-21
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
CPC classification number: H04B1/0057 , H01P5/182 , H04L5/14
Abstract: A directional coupler includes rectangular waveguides each including: a pair of protruding sections which are provided on a first narrow wall or a second narrow wall, which are provided symmetrically with respect to an opening, and which protrude from one of the first and second narrow walls toward the other; and other protruding section which protrudes from the second narrow wall toward the opening.
Abstract translation: 定向耦合器包括矩形波导，每个波导包括：一对突出部分，设置在相对于开口对称设置的第一窄壁或第二窄壁上，并且从第一和第二窄壁 向另一方 以及从第二窄壁向开口突出的其他突出部。
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公开(公告)号：US20250038388A1
公开(公告)日：2025-01-30
申请号：US18717132
申请日：2022-07-29
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
IPC: H01P3/00
Abstract: To reduce return loss in a transmission line that transmits a high-frequency wave between a pair of main surfaces of a substrate, as compared with the input/output structure included in the filter device disclosed in Patent Literature 1. The transmission line (1) includes: a substrate (10); a coplanar line (20) including a signal line pattern (21) provided on a main surface (11) and a first coplanar pattern (coplanar patterns 22 and 23) provided on the main surface (11); and a two-conductor line (30) including a first through via (31) electrically connected with the signal line pattern (21) and a ground conductor (through vias 32 and 33).
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公开(公告)号：US12206147B2
公开(公告)日：2025-01-21
申请号：US17922819
申请日：2022-08-08
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H01P1/18
Abstract: A digital phase shifter of the present invention is a digital phase shifter in which digital phase shift circuits are cascade-connected, each of the digital phase shift circuits including a signal line, a pair of inner lines provided on both sides of the signal line, a pair of outer lines provided on outer sides of the inner lines, a first ground conductor connected to one ends of the inner lines and one ends of the outer lines, a second ground conductor connected to the other ends of the outer lines, and a pair of electronic switches provided between the other ends of the inner lines and the second ground conductor. The digital phase shift circuits include a multi-row structure constituted by a front row and a rear row, the front row and the rear row are adjacent to each other, and the ground pattern is connected to the front row at one point.
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公开(公告)号：US20240396530A1
公开(公告)日：2024-11-28
申请号：US18273904
申请日：2023-02-07
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H03H11/16
Abstract: A digital phase shifter includes a first row, a second row arranged to extend in parallel to the first row, and a connection unit electrically connecting one ends of the first and second rows. Each of the first and second rows is configured by connecting a plurality of digital phase shift circuits in cascade, and each digital phase shift circuit includes an outer line and the like. For the digital phase shift circuits adjacent to each other in each of the first and second rows, outer lines adjacent to each other are separated, a first ground conductor and a second ground conductor adjacent to each other are separated, and positional relationships of the outer line to a signal line are reversed. A plurality of the outer lines included in the first row are not adjacent to a plurality of the outer lines included in the second row.
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Patent Agency Ranking
公开(公告)号：US20240396193A1
公开(公告)日：2024-11-28
申请号：US18273897
申请日：2023-02-07
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H01P1/18
Abstract: A digital phase shifter (100) includes a bend-type connection unit (e.g., a connection unit (20-1)) connecting a first digital phase shift circuit (e.g., a digital phase shift circuit (10-10)) located at an end portion of a first digital phase shift circuit group and a second digital phase shift circuit (e.g., a digital phase shift circuit (10-11)) located at an end portion of a second digital phase shift circuit group, and a capacitor (50) is connected in parallel to at least one of a first connection line of the connection unit (20), a position in the vicinity of a connection position between signal lines of two adjacent digital phase shift circuits (10) constituting the first digital phase shift circuit group, and a position in the vicinity of a connection position between signal lines of two adjacent digital phase shift circuits (10) constituting the second digital phase shift circuit group.
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公开(公告)号：US20240396192A1
公开(公告)日：2024-11-28
申请号：US18273229
申请日：2022-11-14
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
Abstract: A digital phase shift circuit including a first ground conductor connected to one end of each of the two inner lines and the two outer lines, a second ground conductor connected to the other end of each of the two outer lines, and two electronic switches, one thereof being provided between the other end of one of the two inner lines and the second ground conductor, the other thereof being provided between the other end of the other of the two inner lines and the second ground conductor, the first ground conductor being configured of a plurality of conductive layers; and an output circuit including an output signal line connected to the signal line and configured to increase output impedance as compared with that of an input matching load connected to an input stage of the digital phase shift circuit.
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公开(公告)号：US12107310B2
公开(公告)日：2024-10-01
申请号：US17612135
申请日：2020-06-05
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: A mode converter which converts between a mode of a post-wall waveguide and a mode of a line in which a strip-shaped conductor is formed on another substrate different from a substrate of the post-wall waveguide, is less likely to cause a transmission failure resulting from a change in environmental temperature. A mode converter (10) includes: a post-wall waveguide (PW) in which an opening (121) is provided in a wide wall (conductor layer 12); a dielectric substrate (15) having a main surface on which a strip-shaped conductor (16) is formed; and a joining member (solder 18) joining the wide wall (conductor layer 12) and the substrate (15), wherein in a plan view, the opening (121) and the strip-shaped conductor (16) overlap each other.
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公开(公告)号：US12052007B1
公开(公告)日：2024-07-30
申请号：US18018332
申请日：2022-08-09
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H03H11/16
CPC classification number: H03H11/16
Abstract: A digital phase shifter in which a plurality of digital phase shift circuits are connected in cascade. One of the digital phase shift circuits includes at least a signal line, a pair of inner lines provided at both sides of the signal line, a pair of outer lines provided outside of the pair of inner lines, a first ground conductor connected to each first ends of the pair of inner lines and the pair of outer lines, a second ground conductor connected to each second ends of the pair of outer lines, and a pair of electronic switches provided between each of the second ends of the pair of inner lines and the second ground conductor. The pair of outer lines adjacent to each other are separated between the digital phase shift circuits adjacent to each other and the first ground conductor and the second ground conductor adjacent to each other are separated between the digital phase shift circuits adjacent to each other.
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公开(公告)号：US20240250665A1
公开(公告)日：2024-07-25
申请号：US18018147
申请日：2022-08-05
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H03H11/16
CPC classification number: H03H11/16
Abstract: A digital phase shifter includes: a plurality of digital phase shift circuits connected in a cascade manner, wherein each of the plurality of digital phase shift circuits includes a signal line, two inner lines provided on two sides of the signal line, two outer lines provided on outer sides of the inner lines, a first grounding conductor connected to one end of each of the inner lines and the outer lines, a second grounding conductor connected to other ends of the outer lines, and two electronic switches provided between other ends of the inner lines and the second grounding conductor, and is set to a low-delay mode in which return currents flow in the inner lines or a high-delay mode in which return currents flow in the outer lines, and wherein the digital phase shifter includes: a phase shift quantity moderator that moderates unevenness of a phase shift quantity of an uneven digital phase shift circuit of the plurality of digital phase shift circuits, of which the phase shift quantity is uneven with respect to those of other digital phase shift circuits of the plurality of digital phase shift circuits.
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