US 12,066,516 B2
Radar apparatus and signal processing method thereof
Hsiang-Feng Chi, Taipei (TW)
Assigned to RichWave Technology Corp., Taipei (TW)
Filed by RichWave Technology Corp., Taipei (TW)
Filed on Sep. 12, 2021, as Appl. No. 17/472,679.
Claims priority of application No. 110125896 (TW), filed on Jul. 14, 2021.
Prior Publication US 2023/0014043 A1, Jan. 19, 2023
Int. Cl. G01S 13/34 (2006.01); G01S 7/35 (2006.01); H04B 1/44 (2006.01)
CPC G01S 13/34 (2013.01) [G01S 7/352 (2013.01); H04B 1/44 (2013.01); G01S 7/358 (2021.05); G01S 13/343 (2013.01); G01S 13/345 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radar apparatus, comprising:
a transmitting analog front-end circuit configured to generate a transmitting signal according to a carrier wave signal, wherein a frequency of the carrier wave signal changes with time within a frequency sweep period of the carrier wave signal;
a plurality of antenna ports, wherein the antenna ports are respectively configured to receive a radio frequency signal corresponding to an echo signal, wherein the echo signal is generated by a reflection of the transmitting signal by an object;
a switching controller coupled to the transmitting analog front-end circuit and configured to generate a control signal with a receiving period according to the frequency sweep period of the carrier wave signal;
a switching circuit coupled to the antenna ports and the switching controller and configured to select one of the antenna ports to receive the radio frequency signal according to the receiving period of the control signal, wherein the receiving period and the frequency sweep period are a same period, and thus the transmitting signal and the control signal are switched according to the same period of carrier wave signal; and
a receiving analog front-end circuit coupled to the switching circuit and configured to receive the radio frequency signal according to the carrier wave signal and the echo signal.