Title :
A digital leakage cancellation scheme for monostatic FMCW radar
Author :
Lin, Kaihui ; Messerian, Razmig Hagop ; Wang, Yuanxun
Author_Institution :
Dept. of Electr. Eng., California Univ., USA
Abstract :
A novel heterodyne scheme based on real-time digital signal processing is proposed for leakage cancellation in monostatic frequency modulated continuous wave (FMCW) radars. Compared to conventional analog implementation, the advantages of the proposed scheme include that the DC offset existing in analog mixers affecting the cancellation performance are eliminated. A radar test bed at 26 GHz has been built. The measurement results show more than 40 dB suppression in transmitter leakage, which proves the effectiveness of the proposed approach.
Keywords :
CW radar; FM radar; heterodyne detection; microwave mixers; radar signal processing; radar transmitters; 26 GHz; analog mixers; conventional analog implementation; digital leakage cancellation scheme; heterodyne scheme; leakage cancellation; monostatic FMCW radar; monostatic frequency modulated continuous wave radars; radar test bed; real-time digital signal processing; suppression; transmitter leakage; Circulators; Digital signal processing; Error correction; Feeds; Radar antennas; Radar applications; Radar signal processing; Signal generators; Transmitters; Transmitting antennas;
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
Print_ISBN :
0-7803-8331-1
DOI :
10.1109/MWSYM.2004.1339068
