A FET transceiver suitable for FMCW radars

Author

Yhland, Klas ; Fager, Christian

Author_Institution

Dept. of Microelectron., Chalmers Univ. of Technol., Goteborg, Sweden

Volume

10

Issue

9

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

377

Lastpage

379

Abstract

We present a new FET transceiver suitable for frequency modulated continuous wave (FMCW) radars. The circuit obviates the need for dual antennas, a circulator, or a coupler for the separation of the transmit and receive signal paths. A FET is used simultaneously as an amplifier for the transmitted signal and as a resistive mixer for the received signal. At the optimum bias point, the circuit has an output power of 7 dBm and a conversion loss of 9 dB. Also, the noise performance is investigated. The circuit performance is shown to be insensitive to bias voltage variations. Furthermore, the transceiver´s simple topology makes it suitable for commercial high-volume applications

Keywords

CW radar; FM radar; field effect MMIC; integrated circuit noise; microwave integrated circuits; radar equipment; transceivers; 10 GHz; 9 dB; FET amplifier; FET resistive mixer; FET transceiver; FMCW radars; MIC; MMIC; commercial high-volume applications; frequency modulated continuous wave radar; noise performance; optimum bias point; Coupling circuits; FETs; Frequency modulation; Mixers; Power amplifiers; Power generation; Radar antennas; Receiving antennas; Transceivers; Transmitting antennas;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.867856

Filename

867856