Title :
A broadband low noise SIS receiver for submillimeter astronomy
Author :
Buttgenbach, T.H. ; Miller, R.E. ; Wengler, M.J. ; Watson, D.M. ; Phillips, T.G.
Author_Institution :
Dept. of Phys., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A quasioptical heterodyne receiver is described that uses a PbInAu alloy superconductor-insulator-superconductor (SIS) tunnel junction as the detector and a planar logarithmic spiral antenna for the radiofrequency (RF) coupling. Noise measurements were made at frequencies between 115 GHz and 761 GHz, yielding double-sideband noise temperatures ranging from 33 K to 1100 K.<>
Keywords :
radio receivers; radiotelescopes; solid-state microwave circuits; superconducting junction devices; 115 to 761 GHz; EHF; PbInAu alloy; SIS receiver; THF; broadband; detector; double-sideband noise temperatures; low noise; planar logarithmic spiral antenna; quasioptical heterodyne receiver; radiotelescopes; submillimeter astronomy; superconductor-insulator-superconductor; tunnel junction; Astronomy; Detectors; Josephson junctions; Noise measurement; Radio frequency; Receiving antennas; Spirals; Superconducting device noise; Superconducting devices; Superconducting materials;
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
DOI :
10.1109/MWSYM.1988.22076
