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公开(公告)号：US20230273297A1
公开(公告)日：2023-08-31
申请号：US18083497
申请日：2022-12-17
发明人： Jian Bai , Nader Rohani
IPC分类号： G01S7/35 , G01S13/931 , G01S13/32
CPC分类号： G01S7/35 , G01S13/931 , G01S13/325
摘要： An automotive radar system includes multiple radar antennas and a radar front end chip. The front end chip includes a plurality of phase rotators coupled to a local oscillator, wherein each phase rotator of the plurality of phase rotators is coupled to multiple digital phase modulators; a plurality of switches that couple selectable ones of the multiple digital phase modulators to respective amplifiers, each amplifier coupled to a respective antenna output; and a controller which provides digital control signals to the plurality of phase rotators, the multiple digital phase modulators, and the plurality of switches to synthesize transmit signals for each of the multiple radar antennas.
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公开(公告)号：US20230221431A1
公开(公告)日：2023-07-13
申请号：US17971573
申请日：2022-10-22
发明人： Jian Bai , Nader Rohani
IPC分类号： G01S13/931 , G01S7/02 , G01S13/34 , G01S7/35
CPC分类号： G01S13/931 , G01S7/023 , G01S13/34 , G01S7/35
摘要： A radar system that can block false echoes includes: a local oscillator configured to generate a chirp signal comprising a plurality of chirps, each having a corresponding envelope; a transmitter configured to transmit a signal corresponding to the chirp signal; and a modulation circuit configured to modulate the transmitted signal by regulating a magnitude of one or more portions of the chirp envelopes in a predetermined pattern such that the radar system can discern false echoes which do not match the pattern.
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