Title :
An all solid-state superconducting heterodyne receiver at terahertz frequencies
Author :
Tong, C. Edward ; Blundell, Raymond ; Papa, D. Cosmo ; Smith, Michael ; Kawamura, Jonathan ; Gol´tsman, Gregory ; Gershenzon, Eugene ; Voronov, Boris
Author_Institution :
Harvard-Smithsonian Center for Astrophys., Cambridge, MA, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
A superconducting hot-electron bolometer mixer-receiver operating from 1 to 1.26 THz has been developed. This heterodyne receiver employs two solid-state local oscillators each consisting of a Gunn oscillator followed by two stages of varactor frequency multiplication. The measured receiver noise temperature is 1350 K at 1.035 THz and 2700 K at 1.26 THz. This receiver demonstrates that tunable solid-state local oscillators, supplying only a few micro-watts of output power, can be used in terahertz receiver applications
Keywords :
Gunn oscillators; bolometers; frequency multipliers; heterodyne detection; submillimetre wave receivers; superconducting microwave devices; superconducting mixers; varactors; 1 to 1.26 THz; Gunn oscillator; hot-electron bolometer mixer-receiver; output power; receiver noise temperature; solid-state local oscillators; submillimetre-wave receivers; superconducting heterodyne receiver; terahertz frequencies; varactor frequency multiplication; Bolometers; Frequency conversion; Gunn devices; Local oscillators; Noise measurement; Power generation; Solid state circuits; Superconducting device noise; Temperature measurement; Varactors;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
