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

Volume

2

fYear

2004

fDate

6-11 June 2004

Firstpage

747

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1339068

Filename

1339068