An integrated Doppler-radar transceiver front end using two FET active antennas

Author

Ding, Zhengping ; Chang, Kai

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

46

Issue

7

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1001

Lastpage

1003

Abstract

An integrated X-band Doppler-radar transceiver front end has been developed. This front end consists of two adjacently spaced field-effect transistor (FET) active antennas, with one of them being biased to oscillate as its transmitter and the other being biased not to oscillate, but to act as its mixer. This design has the advantage of lower noise at low Doppler frequencies as compared to a self-oscillating mixer scheme. The circuit can be used in low-power Doppler-radar systems to detect slow-moving objects such as pedestrians, intruders, automobiles, etc., with high sensitivity

Keywords

Doppler radar; active antennas; microwave antennas; radar equipment; transceivers; Doppler frequencies; Doppler-radar transceiver; FET active antennas; X-band; adjacently spaced antennas; noise; self-oscillating mixer; sensitivity; slow-moving objects; transceiver front end; Circuits; FETs; Microstrip antennas; Radar antennas; Radio frequency; Radio transmitters; Resonance; Slot antennas; Transceivers; Transmitting antennas;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.701456

Filename

701456