公开(公告)号：US20220066012A1

公开(公告)日：2022-03-03

申请号：US17006503

申请日：2020-08-28

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Francesco Laghezza ,  Saif Alhasson

IPC: G01S13/34 ,  H04B1/38 ,  H04B1/00 ,  H04B1/18 ,  G01S13/931

Abstract: In imaging radar, examples are directed to uses of multiple sets of transmit antenna included with transceiver circuitry, for transmitting in a plurality of modes. Transmissions may involve having at least one transmit antenna, from each of at least two of the multiple sets, to transmit continuous-wave energy concurrently (simultaneously) in one or more of the plurality of different modes. Transceiver circuitry may include multiple receive antennas which may be receiving reflections of the continuous-wave energy from various targets. Signals from the multiple receive antennas may route to signal processing circuitry. The signal processing circuitry may respond to the received reflections of the continuous-wave energy by assessing differences in antenna gain and/or phase due to transmit antenna position associated with the received reflections. This signal processing assessment may mitigate or resolve at least one spatial ambiguity in at least one direction of arrival dimension associated with the received reflections.

公开(公告)号：US11204410B2

公开(公告)日：2021-12-21

申请号：US16272083

申请日：2019-02-11

Applicant: NXP B.V.

Inventor： Feike Guus Jansen ,  Francesco Laghezza ,  Franz Lampel

IPC: G01S7/35 ,  G01S13/34 ,  G01S13/931 ,  G01S13/87 ,  G01S7/02

Abstract: Aspects of the present disclosure are directed to a method and/or apparatus involving frequency modulated continuous wave (FMCW) radar signals. As my be implemented in accordance with one or more embodiments, receiver circuitry is configured and arranged to receive a FMCW radar signal having an information signal embedded into a radar waveform, and to indicate a relationship in the FMCW radar signal between beat frequency magnitude and time delay. A filter processing circuit is configured and arranged to filter the information signal in the FMCW radar signal by applying a group delay function based on the relationship between beat frequency magnitude and time delay. Signal processing circuitry is configured and arranged to detect a remote object by using the filtered FMCW radar signal.