Title :
A compact 500GHz SIS receiver system for POST
Author :
Yao, Qi-Jun ; Cao, Xue-Song ; Zhang, Xu-Guo ; Li, Jing ; Shi, Sheng-Cai ; Yang, Ji
Author_Institution :
Purple Mountain Obs., CAS, Nanjing, China
Abstract :
We introduced here a compact 500 GHz SIS (superconductor-insulator-superconductor) heterodyne receiver system developed for POST (portable submillimeter telescope). The system is proved to have a small volume to be integrated with the small Dewar, which is cooled by a compact close-cycled 100 mW@ 4 K cryo-cooler. Test results shows that a good LO coupling and low signal loss is achieved with a less than 250 K overall receiver noise at 500 GHz waveband.
Keywords :
radiotelescopes; submillimetre astronomy; superconductor-insulator-superconductor devices; frequency 500 GHz; portable submillimeter telescope; power 100 mW; superconductor-insulator-superconductor heterodyne receiver system; Cryogenics; Feeds; Gunn devices; HEMTs; Lenses; Observatories; Oscillators; Sockets; Superconducting device noise; Telescopes; SIS mixer; receiver; submillimeter wave;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384173
