Title :
Scheme for phase-locking a local oscillator in submillimetre-wave receiver
Author_Institution :
Owens Valley Radio Obs., California Inst. of Technol., Pasadena, CA, USA
fDate :
6/22/1989 12:00:00 AM
Abstract :
A technique for phase-locking a low-power fundamental local oscillator in a superconductor-insulator-superconductor (SIS) junction submillimetre-wave receiver is described. The arrangement uses the low-noise SIS mixer itself to downconvert the local oscillator signal from a Josephson junction or quantum well oscillator. A high-frequency phase-locked reference tone is required but for a typical SIS receiver the tone power is less than 10 nW. Even at terahertz frequencies this could easily be generated using a simple multiplier.
Keywords :
microwave detectors; mixers (circuits); phase-locked loops; radiotelescopes; solid-state microwave circuits; superconducting junction devices; 10 nW; Josephson junction; Josephson junction oscillators; SIS receiver; THF; frequency downconverting; high-frequency phase-locked reference tone; local oscillator phase locking; low-noise SIS mixer; low-power fundamental local oscillator; quantum well oscillator; submillimetre-wave receiver; superconductor-insulator-superconductor; terahertz frequencies;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19890589
