Title :
600-696GHz heterodyne receiver with fixed-tuned SIS mixer and Martin-Puplett LO/RF diplexer
Author :
Hwang, Yuh-Jing ; Wang, Ming-Jye ; Jiang, Homin ; Chen, Ming-Tang ; Shi, Sheng-Cai ; Yao, Qijun
Author_Institution :
Acad. Sinica Inst. of Astron. & Astrophys., Taipei, Taiwan
Abstract :
A heterodyne receiver equipped with fixed-tuned superconductor-insulator-superconductor (SIS) mixer is developed and characterized. A Martin-Puplett interferometer is used in the receiver as diplexer to combine the RF/LO signal. The receiver noise measurement indicates the lowest receiver noise temperature including the optical loss of the MPI is as low as 250K. The receiver noise temperature is below 400K in the IF center frequency and below 500K over whole IF passband for LO frequency tuned between 624-696GHz.
Keywords :
multiplexing equipment; submillimetre wave mixers; submillimetre wave receivers; superconductor-insulator-superconductor mixers; 600 to 696 GHz; Martin-Puplett LO-RF diplexer; Martin-Puplett interferometer; fixed-tuned superconductor-insulator-superconductor mixer; heterodyne receiver; receiver noise temperature; submillimeter wave receivers; Noise measurement; Optical interferometry; Optical mixing; Optical noise; Optical receivers; RF signals; Radio frequency; Superconducting device noise; Superconducting devices; Temperature; noise measurement; submillimeter wave receivers; superconductor-insulator-superconductor mixers;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606238
