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1.发明公开公开(公告)号：US20240111023A1
公开(公告)日：2024-04-04
申请号：US18273400
申请日：2021-01-28
发明人： Gregory S. Lee , Natalie Killeen
CPC分类号： G01S7/4086 , G01S7/032 , G01S7/354 , G01S13/931 , H01Q1/3233 , H01Q21/065
摘要： A system and method emulate an echo signal from an emulated target in response to a radar signal from a radar DUT. The system includes an antenna configured to receive the radar signal, and to direct a reflected portion of the radar signal away from an incident direction of the radar signal at a predetermined deflection angle to prevent the radar DUT from receiving the reflected portion; and a transceiver configured to provide an RF signal having an RF frequency shifted from a frequency of the radar signal in an amount indicating a distance to the emulated target, and to transmit the RF signal to the radar DUT as an emulated echo signal. An antenna pattern includes a peak beam angled away from a normal incidence of the antenna at a beam squint angle that compensates for the predetermined deflection angle to direct the peak beam toward the radar DUT.
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公开(公告)号：US11791564B2
公开(公告)日：2023-10-17
申请号：US17255479
申请日：2018-09-05
发明人： Gregory S. Lee , Dieter W. Vook
摘要： A system tests a device under test (DUT) that includes an antenna. The system includes a probe antenna, a network emulator, and a near-field antenna. The probe antenna measures beam characteristics of a beam-locked beam emitted over the air by the antenna of the DUT as the DUT is moved relative to the probe antenna during testing of the DUT. The network emulator emulates a base station of a communications network in communications with the DUT. The near-field antenna maintains a call link between the network emulator and the DUT using surface waves between the near-field antenna and the DUT as the DUT is moved relative to the probe antenna.
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公开(公告)号：US20210405153A1
公开(公告)日：2021-12-30
申请号：US17097093
申请日：2020-11-13
发明人： Gregory S. Lee
IPC分类号： G01S7/40 , G01S13/931
摘要： A system for testing vehicular radar is described. The system include a free-space polarization adapter (FSPA) configured to alter a first polarization state of electromagnetic waves from a radar device under test (DUT) to a second polarization state, which is different than the first polarization state; and a re-illuminator adapted to receive the electromagnetic waves having the second polarization state from the FSPA.
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公开(公告)号：US20210055384A1
公开(公告)日：2021-02-25
申请号：US16867804
申请日：2020-05-06
发明人： Gregory S. Lee
IPC分类号： G01S7/40 , G01S13/931
摘要： A system for testing vehicular radar is described. The system include a diffractive optical element (DOE) configured to diffract electromagnetic waves incident on a first side from a radar device under test (DUT). The system also includes a re-illumination element adapted to receive the electromagnetic waves diffracted from the DOE from a second side. The re-illumination element being adapted to transmit apparent angle of arrival (AoA) electromagnetic waves back to the DOE.
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5.发明申请公开(公告)号：US20180108966A1
公开(公告)日：2018-04-19
申请号：US15820988
申请日：2017-11-22
发明人： Gregory S. Lee , Lewis R. Dove
CPC分类号： H01P3/06 , H01P1/02 , H01P1/16 , H01P1/162 , H01P3/006 , H01P3/081 , H01P3/085 , H01P3/121 , H01P5/107 , H01Q13/08 , H03C7/02
摘要： A signal transmission line includes: a first electrical conductor; a second electrical conductor; a dielectric region between the first electrical conductor and the second electrical conductor; and an electrically thin resistive layer disposed within the dielectric region and disposed between the first electrical conductor and the second electrical conductor. A gap exists in the electrically thin resistive layer.
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6.发明授权公开(公告)号：US09893819B1
公开(公告)日：2018-02-13
申请号：US15416957
申请日：2017-01-26
CPC分类号： H04B17/102 , G01R29/10
摘要： A method determines far field EVM of a DUT using over-the-air (OTA) testing, the DUT having a transmitter/receiver and an antenna that are integrated together such that there is no connection port for interfacing a test system for directly measuring the EVM. Modulated RF signals transmitted by the DUT propagate OTA via the antenna. The method includes performing a near field scan of a bounded radiation surface, which includes measurement points at which waveforms of a repeatedly transmitted modulated RF signal are measured; downconverting the waveforms to intermediate frequency (IF), and digitizing the IF waveforms; synthesizing digital waveforms corresponding to the IF waveforms; accounting for corresponding RF propagation in the far field for the digital waveforms; providing a modulated digital IF waveform using the digital waveforms for which RF propagation has been accounted; and calculating EVM of the DUT in the far field using the modulated digital IF waveform.
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公开(公告)号：US20240332809A1
公开(公告)日：2024-10-03
申请号：US18136424
申请日：2023-04-19
发明人： Gregory S. Lee , Gregory Eng
CPC分类号： H01Q13/025 , H01Q1/22 , H01Q3/267
摘要： A variable gain horn and a system for testing an antenna with the variable gain horn is disclosed. The variable gain horn includes a horn adapted to transmit electromagnetic signals to an antenna under test. The horn is adapted to have a diverging lens attached and detached without fasteners at its distal end of the horn by a form fit. When the diverging lens is not attached, the variable gain horn transmit the electromagnetic signals at a higher directivity than when the variable gain horn with the diverging lens attached to the distal end. The system also comprises a parabolic mirror adapted to reflect the electromagnetic signals incident thereon from the variable gain horn to an antenna under test (AUT).
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8.发明公开公开(公告)号：US20240288545A1
公开(公告)日：2024-08-29
申请号：US18113848
申请日：2023-02-24
IPC分类号： G01S7/40
CPC分类号： G01S7/4095 , G01S7/4086 , G01S13/931
摘要： A system for receiving a radar signal transmitted by a radar device under test (DUT) includes: a plurality of antennae disposed in an array of rows and columns; a plurality of radar target simulators (RTS's), one or more of the plurality of RTS's being selectively connected to each of rows or columns of the plurality of antennae. The plurality of antennae are adapted to receive signals selectively from the one or more RTS's connected to the column or row, and to transmit to the signals to the DUT. The system also includes a switching matrix adapted to selectively switch between selected antennae in each of the columns or each of the rows of the plurality of antennae to connect selected respective RTS's of the plurality of RTS's to selected active antennae of the plurality of antennae in a time division manner.
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公开(公告)号：US11867832B2
公开(公告)日：2024-01-09
申请号：US17175761
申请日：2021-02-15
发明人： Gregory Douglas Vanwiggeren , Todd Steven Marshall , Gregory S. Lee , Natalie Killeen , Christian Bourde
CPC分类号： G01S7/4052 , G01R31/002 , G01S7/4008 , H01Q1/525 , G01S7/4086
摘要： A miniature radar target simulator (MRTS) and a system comprising a plurality of MRTS's are described. The MRTS and system are useful for emulating echo signals for a radar DUT with reduced interference. Illustrative radar test systems desirably generate the intended (emulated) radar targets and reduce unwanted (“ghost”) signals, which can result in “ghost targets,” and errant/ambient electromagnetic radiation that reduces the performance and reliability of known re-illuminators and systems including same.
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公开(公告)号：US11686814B2
公开(公告)日：2023-06-27
申请号：US17113465
申请日：2020-12-07
IPC分类号： G01S7/40 , G01S13/931 , G01S13/00
CPC分类号： G01S7/4056 , G01S13/931 , G01S7/4095
摘要： An apparatus is for generating an emulated radar reflection signal of a target. The apparatus includes a radar detector configured to detect a radar signal frame emitted by a device under test (DUT), an emulation transmitter configured to generate an emulated radar reflection signal of a target being emulated, and a processor configured to generate control signals which control the emulation transmitter according to at least one characteristic of the target being emulated. The processor is further configured to determine a current radar parameter among plural possible radar parameters of the radar signal frame of the DUT, and to adapt the control signals which control the emulation transmitter according to the determined current radar parameter of the radar signal frame of the DUT.
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