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公开(公告)号：US11061110B2
公开(公告)日：2021-07-13
申请号：US16678126
申请日：2019-11-08
申请人： Nidec Corporation , WGR Co., Ltd.
发明人： Hiroyuki Kamo , Hideki Kirino
摘要： A waveguide device includes an electrical conductor including an electrically conductive surface, a waveguide extending alongside the electrically conductive surface, and an artificial magnetic conductor extending on both sides of the waveguide. The waveguide includes a first portion extending in one direction, and at least two branches extending from one end of the first portion, the at least two branches including a second portion and a third portion that extend in mutually different directions. A waveguide defined by the electrically conductive surface, the waveguide surface, and the artificial magnetic conductor includes an enlarged gap portion at which a gap between the electrically conductive surface and the waveguide surface is locally enlarged.
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公开(公告)号：US11047951B2
公开(公告)日：2021-06-29
申请号：US16986900
申请日：2020-08-06
申请人： Waymo LLC
发明人： Adam Brown , Russell Smith , Jamal Izadian , Ben Chen
摘要： The present application discloses embodiments that relate to a radar system. The embodiments may include a plurality of radiating waveguides each having a waveguide input. The embodiments also include an attenuation component, which can be located on a circuit board. The embodiments further include a beamforming network. The beamforming network includes a beamforming network input. The beamforming network also includes a plurality of beamforming network outputs, where each beamforming network output is coupled to one of the waveguide inputs. Additionally, the beamforming network includes a coupling port, wherein the coupling port is configured to couple at least one waveguide of the system to a component external to the waveguide.
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公开(公告)号：US20210167482A1
公开(公告)日：2021-06-03
申请号：US17169878
申请日：2021-02-08
发明人： Makoto OGATA , Takuya SATO
摘要： A power distribution/coupling circuit includes a common terminal, first and second terminals, a first connection point, a first inductor connected between the first connection point and the first terminal, a second inductor connected between the first connection point and the second terminal, a first capacitor connected between an end of the first inductor closer to the first terminal and a ground, a second capacitor connected between an end of the second inductor closer to the second terminal and the ground, a third capacitor connected between the first connection point and the ground, and a resistor connected between the first terminal and the second terminal, wherein the power distribution/coupling circuit further includes a third inductor connected between the common terminal and the first connection point and a fourth capacitor connected between an end of the third inductor closer to the common terminal and the ground.
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公开(公告)号：US20210159607A1
公开(公告)日：2021-05-27
申请号：US17167583
申请日：2021-02-04
申请人： Waymo LLC
发明人： Edwin Lim , Jamal Izadian
摘要： Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes a waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.
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公开(公告)号：US10992053B2
公开(公告)日：2021-04-27
申请号：US16658287
申请日：2019-10-21
申请人： Waymo LLC
发明人： Jamal Izadian , Russell Smith
IPC分类号： H01Q21/00 , H01P5/12 , H01P5/18 , H01P11/00 , H01Q21/06 , H01Q3/24 , H01Q9/04 , H01Q1/38 , H01Q1/52 , G01S13/931 , G01S13/02
摘要： An apparatus includes a waveguide of an antenna block configured to propagate electromagnetic energy along a propagation direction. The antenna block includes a port located on a bottom surface of the antenna block and an antenna array located on a top surface of the antenna block. The antenna block further includes a set of waveguides in the antenna block configured to couple the antenna array to the port. Additionally, the antenna block includes at least one surface wave radiator, where the surface wave radiator is located on the top surface of the antenna block.
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公开(公告)号：US20210096238A1
公开(公告)日：2021-04-01
申请号：US17072523
申请日：2020-10-16
申请人： Waymo LLC
发明人： Jamal Izadian , Russell Smith , Timothy Campbell , Adam Brown
IPC分类号： G01S13/86 , G01S13/90 , G01S13/931 , H01Q21/00 , H01Q1/32 , H01Q13/06 , H01P5/12 , H01P5/18 , H01Q21/06
摘要： A radar system includes a split-block assembly unit comprising a first portion and second portion, where the first portion and the second portion form a seam. The radar system further includes a plurality of ports located on a bottom side of the second portion opposite the seam. Additionally, the radar system includes a plurality of radiating elements located on a top side of the first portion opposite the seam. The plurality of radiating elements is arranged in a plurality of arrays. The plurality of arrays includes a set of multiple-input multiple-output (MIMO) transmission arrays, a set of synthetic aperture radar (SAR) transmission arrays, and at least one reception array. Further, the radar system includes a set of waveguides configured to couple each array to a port.
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公开(公告)号：US10957959B2
公开(公告)日：2021-03-23
申请号：US16552015
申请日：2019-08-27
申请人： TDK CORPORATION
摘要： A band-pass filter includes first to sixth stage resonators. Each resonator includes a resonator conductor portion formed of a conductor line. The resonator conductor portion has a first end and a second end which are opposite ends of the conductor line. The resonator conductor portion of each of the first and sixth stage resonators includes a narrow portion, a first wide portion located between the narrow portion and the first end, and a second wide portion located between the narrow portion and the second end. Each of the first and sixth stage resonators is lower in unloaded Q than the other resonators.
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公开(公告)号：US10931030B2
公开(公告)日：2021-02-23
申请号：US16567176
申请日：2019-09-11
申请人： Waymo LLC
发明人： Edwin Lim , Jamal Izadian
摘要： Example radar systems are presented herein. A radar system may include radiating elements configured to radiate electromagnetic energy and arranged symmetrically in a linear array. The radiating elements comprise a set of radiating doublets and a set of radiating singlets. The radar system also includes waveguide configured to guide electromagnetic energy between each of the plurality of radiating elements and a waveguide feed. The waveguide feed is coupled to the second side of the waveguide at a center location between a first half of the plurality of radiating elements and a second half of the plurality of radiating elements. The waveguide feed is configured to transfer electromagnetic energy between the waveguide and a component external to the waveguides. The radar system may also include a power dividing network defined by the waveguide and configured to divide the electromagnetic energy transferred by the waveguide feed based on a taper profile.
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49.发明授权公开(公告)号：US10931020B2
公开(公告)日：2021-02-23
申请号：US16129528
申请日：2018-09-12
申请人： ViaSat, Inc.
发明人： Frederic Bongard , Stefano Vaccaro
摘要： A waveguide structure for a compact and scalable dual-polarized antenna array. In one example, a waveguide device comprises septum polarizers dividing common waveguides into first waveguides associated with a first polarization and second waveguides associated with a second polarization. The sets of septum polarizers may be inverted relative to each other to form first groups of four adjacent first waveguides for each type of waveguide. The waveguide device may also include a waveguide feed network including a first waveguide feed stage including waveguide combiner/dividers coupled between the four adjacent waveguides intermediate waveguides. The waveguide device may further include a second waveguide feed stage coupled with the first intermediate waveguides and the second intermediate waveguides, wherein the second waveguide feed stage extends in a direction perpendicular to the first waveguide feed stage.
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公开(公告)号：US10886586B2
公开(公告)日：2021-01-05
申请号：US16114890
申请日：2018-08-28
发明人： Baleegh Abdo , Patryk Gumann
摘要： A hybrid microwave attenuator is constructed by forming a circuit and a housing. The circuit has two ports, a resistive component configured to attenuate some frequencies in an input signal (transmitted signal), and a dispersive component configured to attenuate some frequencies within a frequency range. The resistive component and the dispersive component are arranged in a series configuration relative to one another between the two ports of the circuit. The housing includes a closable structure in which the circuit is positioned, the structure being formed of a material that exhibits at least a threshold level of thermal conductivity, where the threshold level of thermal conductivity is achieved at a cryogenic temperature range in which a quantum computing circuit operates. The housing further includes a pair of microwave connectors, the pair of connectors being thermally coupled to the housing.
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