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公开(公告)号：US11024932B1
公开(公告)日：2021-06-01
申请号：US16520492
申请日：2019-07-24
发明人： Jonathan A. Lovseth
摘要： A tunable frequency selective limiter is disclosed. In one or more embodiments, the tunable frequency selective limiter includes a first electrically conductive path. The tunable frequency selective limiter also includes a ferrimagnetic layer disposed adjacent to the first electrically conductive path. The tunable frequency selective limiter further includes a second electrically conductive path coiled around the first electrically conductive path and the ferrimagnetic layer. An electromagnetic current transmitting through the second electrically conductive path produces a magnetic field coupled to the ferrimagnetic layer. The tunable frequency selective limiter further includes a dielectric layer, wherein the ferrimagnetic layer is disposed on the dielectric layer. The portions of the second electrically conductive path that are at the interface of the dielectric layer and the ferrimagnetic layer may be embedded into the dielectric layer or may be disposed on the surface of the dielectric layer.
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92.发明授权公开(公告)号：US11005148B2
公开(公告)日：2021-05-11
申请号：US16382502
申请日：2019-04-12
发明人： Pengju Zhang , Mingxing Liu , Hong Zhu
摘要： A liquid crystal phase shifter and a fabrication method thereof, a liquid crystal antenna and an electronic device are provided. The liquid crystal phase shifter includes a first substrate, a first substrate and a liquid crystal layer. The first substrate includes a first surface and a first electrode provided on the first surface, the second substrate includes a second surface and a second electrode provided on the second surface, the liquid crystal layer is provided between the first electrode of the first substrate and the second electrode of the second substrate, and the first substrate and the second substrate constitute a tubular structure in which the first substrate and the second substrate are stacked with one of the first substrate and the second substrate being inside the other of the first substrate and the second substrate.
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公开(公告)号：US10986739B2
公开(公告)日：2021-04-20
申请号：US15967955
申请日：2018-05-01
发明人： Ki Wook Lee
IPC分类号： H01P11/00 , H05K3/46 , H01Q1/38 , H05K1/16 , H05K3/00 , H01Q9/04 , H05K3/06 , H05K3/40 , H05K3/42
摘要： A method of making a printed circuit board structure including a closed cavity is provided. The method can include the steps of forming a cavity in a core structure of a core layer, laminating each of a top surface and a bottom surface of the core structure with an adhesive layer and a metal layer to prepare a laminate structure and cover the cavity to define a closed cavity. The method also includes forming vias through the laminate structure, and patterning the metal layers in the laminate structure.
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公开(公告)号：US20210091442A1
公开(公告)日：2021-03-25
申请号：US16603645
申请日：2018-04-06
申请人： FUJIKURA LTD.
发明人： Yusuke Uemichi
摘要： An object of the present invention is to prevent or reduce an error between a center frequency and a target center frequency in a coupled resonator band-pass filter which uses a post-wall waveguide. A band-pass filter (1) includes: a substrate (2) made of a dielectric substrate and sandwiched by a pair of conductor layers (3 and 4); and a post wall (11, 12) constituted by a plurality of conductor posts (11i, 12i) which pass through the substrate (2) and short-circuit the pair of conductor layers (3 and 4), the pair of conductor layers (3 and 4) and the post wall (11, 12) constituting a plurality of resonators (22 to 24) which are coupled, the pair of conductor layers serving as a pair of wide walls of the plurality of resonators, the post wall serving as a narrow wall of the plurality of resonator. The plurality of resonators include at least one resonator (22 to 24) which is provided with at least one recess (221 to 241) which passes through either one (the conductor layer 4) of the pair of wide walls and directly leads to inside the substrate (2).
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95.发明授权公开(公告)号：US10944148B2
公开(公告)日：2021-03-09
申请号：US15016143
申请日：2016-02-04
发明人： Don Lee , Daniel Lam , Roger Mcaleenan , Kosuke Miyao
摘要： Embodiments described herein perform incisions along the direction of the long axis of the waveguide, thereby exposing a trench structure which can be readily plated. Once divided and plated, the individual cut pieces can then be secured together to restore the original waveguide structure. In this fashion, multiple cut pieces can be secured together and used as “building blocks” to create a modular solution which can be used to provide a number of different customizable waveguide structures. Thus, embodiments described herein can perform plating procedures in a less expensive manner while achieving the benefits of ganged waveguide structures. Moreover, embodiments described herein can offer a modular approach to ganged waveguide design thereby allowing for end-user flexibility in testing.
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公开(公告)号：US10938082B2
公开(公告)日：2021-03-02
申请号：US16111830
申请日：2018-08-24
申请人： The Boeing Company
发明人： John E. Rogers
摘要： An aperture coupled microstrip-to-waveguide transition (“ACMWT”) is disclosed that includes a plurality of dielectric layers forming a dielectric structure and an inner conductor formed within the dielectric structure. The plurality of dielectric layers includes a top dielectric layer that has a top surface. The (“ACMWT”) further includes a patch antenna element (“PAE”) formed on the top surface, a bottom conductor, an antenna slot within the PAE, a coupling element (“CE”) formed above the inner conductor and below the PAE, and a waveguide. The waveguide includes at least one waveguide wall and a waveguide backend, where the waveguide backend has a waveguide backend surface that's a portion of the top surface of the top dielectric layer and where the waveguide backend surface and the at least one waveguide wall form a waveguide cavity within the waveguide. The PAE is a conductor located within the waveguide cavity at the waveguide backend surface.
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公开(公告)号：US10930987B2
公开(公告)日：2021-02-23
申请号：US16534249
申请日：2019-08-07
发明人： Vivekananda P. Adiga , Markus Brink
IPC分类号： H01P3/02 , H01L21/3205 , H01L21/768 , H05H7/20 , H01L23/482 , H01B12/06 , H01P11/00
摘要： The present invention provides a process and structure of microfabricated air bridges for planar microwave resonator circuits. In an embodiment, the invention includes depositing a superconducting film on a surface of a base material, where the superconducting film is formed with a compressive stress, where the compressive stress is higher than a critical buckling stress of a defined structure, etching an exposed area of the superconducting film, thereby creating the at least one bridge, etching the base material, thereby forming a gap between the at least one bridge and the base material, depositing the at least one metal line on at least part of the superconducting film and at least part of the base material, where the at least one metal line runs under the bridge.
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公开(公告)号：US20210036411A1
公开(公告)日：2021-02-04
申请号：US17063865
申请日：2020-10-06
申请人： Waymo LLC
发明人： Benjamin Chen , Adam Brown , Jamal Izadian
摘要： The radar system includes a split-block assembly comprising a first portion and a second portion. The first portion and the second portion form a seam, where the first portion has a top side opposite the seam and the second portion has a bottom side opposite the seam. The system includes at least one port located on a bottom side of the second portion. Additionally, the system includes radiating elements located on the top side of the first portion, wherein the radiating elements are arranged in a plurality of arrays. Yet further, the system includes a set of waveguides in the split-block assembly configured to couple each array to at least one port. Furthermore, the split-block assembly is made from a polymer and where at least the set of waveguides, the at least one port, and the plurality of radiating elements include metal on a surface of the polymer.
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公开(公告)号：US10903543B2
公开(公告)日：2021-01-26
申请号：US15370498
申请日：2016-12-06
申请人： Cray Inc.
发明人： Andy Becker
摘要： Signal transmission structures within a printed circuit are formed to have reduced loss by making specific accommodations to reduce the surface roughness of an adjacent power plane, and thereby reducing the effects of magnetically induced currents. The power plane structure will retain sufficient surface roughness to accommodate manufacturing operations, while also contributing to reduced signal transmission losses in the adjacent signal transmission structure. The transmission structures thereby being capable of more efficiently transmitting high speed signals without undesired attenuation and loss.
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公开(公告)号：US20200381793A1
公开(公告)日：2020-12-03
申请号：US16762332
申请日：2018-11-05
申请人： Sofia RAHIMINEJAD , Peter ENOKSSON , Sjoerd HAASL
发明人： Sofia RAHIMINEJAD , Peter ENOKSSON , Sjoerd HAASL
摘要： A waveguide switch for switching between an ON-state and an OFF-state for a waveguide channel, including: a moveable waveguide switch body including: an input opening for receiving an electromagnetic wave, an output opening for releasing an electromagnetic wave, wherein the waveguide switch body further includes a blocking element arranged such that in the ON state, an electromagnetic wave may pass from the input opening to the output opening, and in the OFF state the blocking element substantially impedes an electromagnetic wave traveling from the input opening to the output opening, whereby the switch from the ON state to the OFF state is a rotational or translation movement of the waveguide switch body. Also, a waveguide system employing such a switch and a method of manufacturing such a switch. Contactless switching is provided in a high-frequency system.
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