US 12,085,664 B2
Switchable FMCW/PMCW radar transceiver
Tom Heller, Karmiel (IL)
Assigned to AyDeeKay LLC, Aliso Viejo, CA (US)
Filed by AyDeeKay LLC, Aliso Viejo, CA (US)
Filed on Jun. 9, 2022, as Appl. No. 17/837,019.
Application 17/837,019 is a continuation of application No. 16/455,469, filed on Jun. 27, 2019, granted, now 11,385,322.
Claims priority of provisional application 62/839,927, filed on Apr. 29, 2019.
Prior Publication US 2022/0373675 A1, Nov. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/02 (2006.01); G01R 31/317 (2006.01); G01S 7/03 (2006.01); G01S 7/35 (2006.01); G01S 7/40 (2006.01); G01S 13/34 (2006.01); G01S 13/36 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/023 (2013.01) [G01R 31/31724 (2013.01); G01S 7/0233 (2021.05); G01S 7/0234 (2021.05); G01S 7/0235 (2021.05); G01S 7/034 (2013.01); G01S 7/352 (2013.01); G01S 7/40 (2013.01); G01S 7/4056 (2013.01); G01S 13/34 (2013.01); G01S 13/36 (2013.01); G01S 13/931 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transceiver comprising:
a signal generator configured to generate a transmit signal;
a modulator configured to derive a modulated signal from the transmit signal using phase modulation;
at least one receiver configured to mix the transmit signal with a receive signal to produce a down-converted receive signal, the receive signal comprising the modulated signal during a built-in self-test (BIST) mode of operation;
verifying operation of the receiver during the BIST mode of operation; and
selecting a frequency modulation or phase modulation transmission mode, wherein the selecting comprises:
transmitting the transmit signal, the transmit signal comprising a chirp waveform;
processing the down-converted receive signal to determine a distance to a reflector;
when the down-converted receive signal is indicative of interference, selecting the phase modulation transmission mode; and
when the down-converted receive signal is not indicative of interference, selecting the frequency modulation transmission mode.