Title :
Design and characterization of a 250-350-GHz fixed-tuned superconductor-insulator-superconductor receiver
Author :
Tong, Cheuk-Yu Edward ; Blundell, Raymond ; Paine, Scott ; Papa, D. Cosmo ; Kawamura, Jonathan ; Zhang, Xiaolei ; Stern, Jeffrey A. ; LeDuc, Henry G.
Author_Institution :
Harvard-Smithsonian Center for Astrophys., Cambridge, MA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
A fixed-tuned superconductor-insulator-superconductor (SIS) receiver has been designed to operate in the 250-350-GHz frequency band. This receiver has a double-side-band noise temperature of between 35 and 45 K, or about 3hν/kB, over its entire operating band. Extensive characterization of the receiver has been carried out using techniques developed for submillimeter waves. The input noise, side-band ratio, 1 dB compression point, optimum LO drive level, and vector near-field beam profile have all been measured experimentally. The measurement techniques and results are presented and discussed
Keywords :
circuit tuning; millimetre wave measurement; millimetre wave mixers; millimetre wave receivers; radiotelescopes; submillimetre wave measurement; submillimetre wave mixers; submillimetre wave receivers; superconducting device noise; superconducting device testing; superconducting microwave devices; superconductor-insulator-superconductor mixers; 1 dB compression point; 250 to 350 GHz; EHF; THF; characterization; fixed-tuned SIS receiver; input noise; measurement techniques; optimum LO drive level; side-band ratio; superconductor-insulator-superconductor receiver; vector near-field beam profile; Contacts; Extraterrestrial measurements; Frequency; Microstrip; Submillimeter wave technology; Superconducting device noise; Superconducting devices; Superconducting microwave devices; Thin film circuits; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
