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公开(公告)号：US20220209385A1
公开(公告)日：2022-06-30
申请号：US17135268
申请日：2020-12-28
Applicant: Waymo LLC
Inventor： Edwin Lim , Tegan Argo , Marvin Weinstein
Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.
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公开(公告)号：US11726174B1
公开(公告)日：2023-08-15
申请号：US17134793
申请日：2020-12-28
Applicant: Waymo LLC
Inventor： Timothy Campbell , Edwin Lim
IPC: G01S7/40 , G01S13/931 , G01S7/35
CPC classification number: G01S7/4008 , G01S7/354 , G01S7/40 , G01S13/931
Abstract: Example embodiments described herein involve techniques for removing transmit phase noise. A system may cause a printed circuit board (PCB) to supply a signal enabling the transmission line to couple the signal to the radar unit and the delay line to couple the signal to the quadrature coupler. The radar unit may use the signal to transmit a radar signal on a radio channel having a centered radio frequency while the quadrature coupler uses the signal to produce an output from the quadrature coupler. The system may estimate phase noise relative to the radio channel having the centered RF based on the output from the quadrature coupler, receive, from the radar unit, a radar reflection corresponding to the radar signal, and determine information representative of one or more objects in an environment based on the radar reflection and the phase noise.
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公开(公告)号：US11482792B2
公开(公告)日：2022-10-25
申请号：US17167583
申请日：2021-02-04
Applicant: Waymo LLC
Inventor： Edwin Lim , Jamal Izadian
Abstract: 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：US20220209415A1
公开(公告)日：2022-06-30
申请号：US17136393
申请日：2020-12-29
Applicant: Waymo LLC
Inventor： Edwin Lim , Timothy Campbell , Matthew Markel
Abstract: Example embodiments relate to low elevation side lobe antennas with fan-shaped beams. An example radar unit may include a radiating plate having a first side and a second side with an illuminator, a waveguide horn, a waveguide opening, and a radiating sleeve extending into the first side of the radiating plate. The waveguide opening is positioned on the first end of the first side and the radiating sleeve is positioned on the second end of the first side. The radar unit also includes a metallic cover coupled to the first side of the radiating plate such that the metallic cover and the radiating plate form waveguide structures. The waveguide horn is configured to receive, from an external source, electromagnetic energy provided through the waveguide opening via a first waveguide and provide a portion of the electromagnetic energy to the illuminator via a second waveguide such that the portion of the electromagnetic energy radiates off the illuminator and through the radiating sleeve into an environment of the radar unit as one or more radar signals.
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公开(公告)号：US11309636B2
公开(公告)日：2022-04-19
申请号：US16718689
申请日：2019-12-18
Applicant: Waymo LLC
Inventor： Edwin Lim , Matt Markel
IPC: H01Q21/00 , G01S7/28 , H01Q3/26 , G01S13/931
Abstract: An example radar system includes a transmission array and a reception array, each aligned as a linear array. The radar system also includes a transmitter configured to cause transmission of radar signals having a center frequency by the transmission array. The radar system also includes a receiver configured to receive radar signals having the center frequency that are received by the reception array. The radar system also includes a processor configured to process received radar signals from the receiver, and adjust the center frequency from a first center frequency to a second center frequency. The adjusting of the center frequency from the first center frequency to the second center frequency causes the frequency-dependent transmission radiation pattern of the transmission array to tilt in a first direction and the frequency-dependent reception radiation pattern of the reception array to tilt in an opposite direction from the first direction.
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Patent Agency Ranking
公开(公告)号：US20210194150A1
公开(公告)日：2021-06-24
申请号：US16718689
申请日：2019-12-18
Applicant: Waymo LLC
Inventor： Edwin Lim , Matt Markel
IPC: H01Q21/00 , G01S13/931 , H01Q3/26 , G01S7/28
Abstract: An example radar system includes a transmission array and a reception array, each aligned as a linear array. The radar system also includes a transmitter configured to cause transmission of radar signals having a center frequency by the transmission array. The radar system also includes a receiver configured to receive radar signals having the center frequency that are received by the reception array. The radar system also includes a processor configured to process received radar signals from the receiver, and adjust the center frequency from a first center frequency to a second center frequency. The adjusting of the center frequency from the first center frequency to the second center frequency causes the frequency-dependent transmission radiation pattern of the transmission array to tilt in a first direction and the frequency-dependent reception radiation pattern of the reception array to tilt in an opposite direction from the first direction.
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7.发明公开公开(公告)号：US20240250448A1
公开(公告)日：2024-07-25
申请号：US18597231
申请日：2024-03-06
Applicant: Waymo LLC
Inventor： Edwin Lim , Marvin Weinstein
CPC classification number: H01Q21/0006 , H01P3/121 , H01P3/16 , H01Q1/50 , H01Q21/24
Abstract: Example embodiments relate to a substrate integrated waveguide (SIW) with dual circular polarizations. An example SIW may include a dielectric substrate and a first metallic layer coupled to a top surface of the dielectric substrate with a through-hole extending through the dielectric substrate and the first metallic layer. The SIW also includes a dielectric layer coupled to a top surface of the first metallic layer. A second metallic layer is coupled to a top surface of the dielectric layer. The second metallic layer includes a non-conductive opening, a plurality of feeds with a first end in the non-conductive opening and a second end including a single-ended termination, and an impedance transformer. The SIW also includes a third metallic layer coupled to a bottom of the dielectric substrate, and a set of metallic via-holes proximate the non-conductive opening and coupling the second metallic layer to the third metallic layer.
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公开(公告)号：US11894595B2
公开(公告)日：2024-02-06
申请号：US18059655
申请日：2022-11-29
Applicant: Waymo LLC
Inventor： Edwin Lim , Tegan Argo , Marvin Weinstein
CPC classification number: H01P5/107 , H01P3/082 , H01P3/121 , H05K1/024 , H05K2201/0195
Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.
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公开(公告)号：US11539107B2
公开(公告)日：2022-12-27
申请号：US17135268
申请日：2020-12-28
Applicant: Waymo LLC
Inventor： Edwin Lim , Tegan Argo , Marvin Weinstein
Abstract: Example embodiments relate to substrate integrated waveguide (SIW) transitions. An example SIW may include a dielectric substrate having a top surface and a bottom surface and a first metallic layer portion coupled to the top surface of the dielectric substrate that includes a single-ended termination, an impedance transformer, and a metallic rectangular patch located within an open portion in the first metallic layer portion such that the open portion forms a non-conductive loop around the metallic rectangular patch. The SIW also includes a second metallic layer portion coupled to the bottom surface of the dielectric substrate and metallic via-holes electrically coupling the first metallic layer to the second metallic layer. The SIW may be implemented in a radar unit to couple antennas to a printed circuit board (PCB). In some examples, the SIW may be implemented with only a non-conductive opening that lacks the metallic rectangular patch.
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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
Applicant: Waymo LLC
Inventor： Edwin Lim , Jamal Izadian
Abstract: 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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