Development of RF front-end with high T/R isolation for Ka band Mono-antenna FMCW radar

Author

Xiu-kun, Shi ; Jian, Huang

Author_Institution

10th Inst. of Chinese Electron. Technol. Corp., Chengdu, China

Volume

1

fYear

2011

fDate

24-27 Oct. 2011

Firstpage

276

Lastpage

279

Abstract

The RF front-end with high T/R isolation for Ka band mono-antenna frequency modulation continuous wave (FMCW) radar is introduced in this paper. By using of balanced passive cancellation network, the transmitter´s leaking signal is cancelled in receiving channel. Moreover, making use of orthogonal decomposition and cancellation principle for small reflecting signal in transmission line, the reflecting signal in antenna feeder due to mismatching is eliminated through introducing reflection cancellation tuner. Finally, more than 50 dB T/R isolation in 500MHz bandwidth is attained for radar front-end with greater than 200 mW transmitting power and less than 12dB receiving noise figure. The weight is no more than 150g.

Keywords

CW radar; FM radar; antenna feeds; millimetre wave radar; radar antennas; radar transmitters; Ka band radar; RF front-end; antenna feeder; balanced passive cancellation network; bandwidth 500 MHz; frequency modulation continuous wave; high T/R isolation; mono-antenna FMCW radar; orthogonal decomposition; radar front-end; receiving channel; reflection cancellation tuner; transmission line; transmitter leaking signal; Bandwidth; Power transmission lines; Radar; Radar antennas; Radio frequency; Reflection; Tuning; FMCW radar; Ka band; Leaking Power Cancellation (LPC); Reflecting Power Cancellation (RPC);

fLanguage

English

Publisher

ieee

Conference_Titel

Radar (Radar), 2011 IEEE CIE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-8444-7

Type

conf

DOI

10.1109/CIE-Radar.2011.6159532

Filename

6159532