Title :
A FET transceiver suitable for FMCW radars
Author :
Yhland, Klas ; Fager, Christian
Author_Institution :
Dept. of Microelectron., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
9/1/2000 12:00:00 AM
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;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
