US 11,668,793 B2
Radar system
Gustavo Adolfo Guarin Aristizabal, Munich (DE); Arnaud Sion, Munich (DE); and Ryan Haoyun Wu, San Jose, CA (US)
Assigned to NXP USA, INC., Austin, TX (US)
Filed by NXP USA, INC., Austin, TX (US)
Filed on Dec. 8, 2020, as Appl. No. 17/114,601.
Claims priority of application No. 20152111 (EP), filed on Jan. 16, 2020.
Prior Publication US 2021/0223361 A1, Jul. 22, 2021
Int. Cl. G01S 7/40 (2006.01); G01S 7/35 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/40 (2013.01) [G01S 7/352 (2013.01); G01S 7/4017 (2013.01); G01S 7/4021 (2013.01); G01S 13/931 (2013.01); G01S 7/356 (2021.05); G01S 2013/93271 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A radar system comprising:
a plurality of radar transceiver units, each configured to operate according to a low frequency clock signal, and configured to generate an intermediate frequency signal and a modulated high frequency signal for transmitting and receiving radar signals; and
a microcontroller unit configured to provide control signals to each transceiver unit to synchronize operation thereof,
wherein each radar transceiver unit is configured to provide received radar data and a monitoring signal to the microcontroller unit, the monitoring signal derived by frequency dividing and combining the modulated high frequency signal and intermediate frequency signal, and
wherein the microcontroller unit is configured to derive and compensate for phase and frequency differences between the received radar data from each transceiver unit based on the monitoring signals provided by each transceiver unit.