Title :
On the performance of different HEMT cryogenic mixers
Author :
Angelov, I. ; Garcia, M. ; Zirath, H.
Author_Institution :
Dept. of Microwave Technol., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Performance of different HEMT mixers -i.e. gate, drain and resistive (microstrip and waveguide) has been studied experimentally at room and cryogenic temperatures. Conversion gain (loss for the resistive mixers) at cryogenic temperatures improves approximately 1/spl divide/1.5 dB. The noise figure improves too - all the mixers show 2-3 dB improvement in the noise figure performance.
Keywords :
HEMT circuits; cryogenic electronics; mixers (circuits); HEMT cryogenic mixer; conversion gain; conversion loss; microstrip drain mixer; microstrip gate mixer; microstrip resistive mixer; noise figure; waveguide resistive mixer; Cryogenics; Frequency; HEMTs; Microstrip; Microwave technology; Noise figure; Noise measurement; Oscillators; Temperature distribution; Voltage;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.602933
