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公开(公告)号：US12224472B2
公开(公告)日：2025-02-11
申请号：US17922696
申请日：2022-08-08
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
Abstract: A connecting portion includes a first connection line configured to connect a signal line of a first digital phase shift circuit and a signal line of a second digital phase shift circuit, second connection lines configured to connect inner lines of the first digital phase shift circuit and inner lines of the second digital phase shift circuit, ground layers disposed above and below the first connection line and the second connection lines, and first via holes configured to connect at least the second connection lines and the ground layers.
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公开(公告)号：US20240222830A1
公开(公告)日：2024-07-04
申请号：US17922696
申请日：2022-08-08
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
Abstract: A connecting portion includes a first connection line configured to connect a signal line of a first digital phase shift circuit and a signal line of a second digital phase shift circuit, second connection lines configured to connect inner lines of the first digital phase shift circuit and inner lines of the second digital phase shift circuit, ground layers disposed above and below the first connection line and the second connection lines, and first via holes configured to connect at least the second connection lines and the ground layers.
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公开(公告)号：US20240222829A1
公开(公告)日：2024-07-04
申请号：US17922819
申请日：2022-08-08
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
IPC: H01P1/18
CPC classification number: 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：US20240030574A1
公开(公告)日：2024-01-25
申请号：US17628001
申请日：2021-05-31
Applicant: Fujikura Ltd.
Inventor： Yusuke Uemichi
Abstract: The power splitter-combiner (1) includes one combining terminal (11), two split terminals (12a, 12b), an absorption resistance (13) connected between the two split terminals, a first transmission line (14a) connected between the combining terminal and one split terminal of the two split terminals, a second transmission line (14b) connected between the combining terminal and the other split terminal of the two split terminals and having a length shorter than that of the first transmission line, and at least one first open stub (15) connected to the second transmission line.
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公开(公告)号：US11843157B2
公开(公告)日：2023-12-12
申请号：US17431457
申请日：2020-04-27
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: An aspect of the present invention is to reduce return loss in a mode converter. A mode converter (10) includes an excitation pin (through via TV) configured to carry out mutual conversion between a waveguide mode of a post-wall waveguide (PW) and a waveguide mode of a microstrip line (MS). The mode conductor includes a pair of wide walls (conductor layers 12 and 13), in which first and second anti-pads (anti-pads 12c, 13c) are formed, respectively. The first and second anti-pads each have an inner edge including the excitation pin and each have an outer size (diameter D12) that is more than 5 times and less than 6 times as large as the diameter (DT) of the excitation pin.
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Patent Agency Ranking
公开(公告)号：US20230282952A1
公开(公告)日：2023-09-07
申请号：US18019848
申请日：2021-03-22
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
IPC: H01P1/203
CPC classification number: H01P1/203
Abstract: This invention can reduce the size of a filter device as compared to a conventional filter device having the same coupling degree. A filter device (1) includes: a substrate (11); strip-shaped conductors (12a1 to 12a5); and a ground conductor layer (13), an area facing an area interposed between adjacent ones of the strip-shaped conductors (between 12a1 and 12a2 and between 12a2 and 12a3) having a first recessed portion (recessed portions 11a1 and 11a2) having a surface covered with the ground conductor layer (13).
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公开(公告)号：US11342648B2
公开(公告)日：2022-05-24
申请号：US16617341
申请日：2018-05-29
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: A transmission line in which a waveguide tube and a planar transmission path are coupled to a post-wall waveguide broadens a band in which return loss is small. A transmission line (1) includes: a PPW (filter 11) including wide walls (13, 14) and narrow walls (16); and a waveguide tube (21). The PPW (filter 11) includes a columnar conductor (pin 18) that passes through an opening (13a) which is provided in the wide wall (conductor layer 13) and that has one end portion (181) located inside the substrate (12). The waveguide tube (21) is placed such that the columnar conductor (pin 18) passes through an opening (22a) and such that another end portion (182) of the columnar conductor (pin 18) is located inside the waveguide tube (21).
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公开(公告)号：US20220029260A1
公开(公告)日：2022-01-27
申请号：US17428162
申请日：2020-03-09
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: The present invention achieves a filter that makes it possible to easily adjust a center frequency of a pass band. A filter (1) includes a post-wall waveguide (11) functioning as a resonator group consisting of a plurality of resonators (11a to 11e) that are electromagnetically coupled to each other. The post-wall waveguide (11) has a broad wall (first broad wall 112) that is provided with openings (112a to 112e) which allow opening of at least one resonator (11a to 11e) belonging to the resonator group. These openings (112a to 112e) are used to adjust a center frequency of a pass band of the filter (1).
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公开(公告)号：US11054572B2
公开(公告)日：2021-07-06
申请号：US16617400
申请日：2018-05-29
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: A filter device including a filter and waveguide tubes broadens a band in which return loss is small. A filter device (1) includes: a filter (11) including wide walls (13, 14) and narrow walls (16); and first and second waveguide tubes (21, 31). The filter 11 includes first and second columnar conductors (pins 18 and 19) each passing through an opening (13a1 or 13a2) which is provided in the wide wall (conductor layer 13) and having one end portion (181, 191) located inside the substrate (12). The first and second waveguide tubes (21, 31) are placed such that each of the first and second columnar conductors (pin 18, 19) passes through an opening (22a, 23a) and such that another end portion (182, 192) of each of the columnar conductors (pin 18, 19) is located inside the waveguide tube (21, 31).
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公开(公告)号：US20210066773A1
公开(公告)日：2021-03-04
申请号：US16982665
申请日：2019-03-27
Applicant: FUJIKURA LTD.
Inventor： Yusuke Uemichi
Abstract: Realized is a post-wall waveguide bandpass filter in which a bypass phenomenon is less likely to occur. In a post-wall waveguide bandpass filter (1) including an input part (10a) and an output part (10b), each of a first distance (distance X11), a second distance (not illustrated in FIG. 2), a third distance (distance X21), and a fourth distance (not illustrated in FIG. 2) is not more than 1.5 times a post interval (d).
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