Title :
A 40-GHz integrated quasi-optical slot HFET mixer
Author :
Zirath, Herbert H G ; Chi, Chen-Yu ; Rorsman, Niklas ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
12/1/1994 12:00:00 AM
Abstract :
We present for the first time a quasi-optical mixer realized as a resistive HFET mixer with an integrated slot antenna. Two different types of HFET´s, based on GaAs and InP, are compared for this application. The mixer conversion loss, defined as the measured IF power in the 50 Ω load divided by the RF power available at the slot-antenna terminals, is better than 7 dB at LO powers down to 0 dBm. Subharmonic pumping of the mixer is also investigated. This topology has a potential interest for future low-cost millimeter-wave receivers for automobile radar and speed detector systems
Keywords :
III-V semiconductors; MMIC mixers; field effect MMIC; gallium arsenide; indium compounds; millimetre wave mixers; millimetre wave receivers; radar receivers; slot antennas; 40 GHz; GaAs; InP; RF power; automobile radar systems; integrated slot antenna; low-cost millimeter-wave receivers; measured IF power; mixer conversion loss; quasi-optical mixer; resistive HFET mixer; speed detector systems; subharmonic pumping; Antenna measurements; Gallium arsenide; HEMTs; Indium phosphide; Loss measurement; MODFETs; Power measurement; Radio frequency; Slot antennas; Topology;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
