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AN ULTRA‐LOW‐NOISE MILLIMETER‐WAVE OSCILLATOR USING A SAPPHIRE DISK RESONATOR AND HIGH‐TEMPERATURE SUPERCONDUCTOR GROUND PLANES
Author(s) -
Negrete George V.
Publication year - 1993
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650061311
Subject(s) - resonator , sapphire , extremely high frequency , shielded cable , phase noise , millimeter , materials science , optoelectronics , noise (video) , ceramic , electrical engineering , physics , optics , engineering , computer science , composite material , laser , artificial intelligence , image (mathematics)
Abstract The first fully integrated HTS millimeter‐wave oscillator operating at 77 K with a phase noise improvement of 20 dB over conventional oscillators is reported. A loaded Q of 59,000 at 36.5 GHz obtained from a sapphire resonator shielded by HTS ground planes is almost 100 times greater than ceramic resonators. © 1993 John Wiley & Sons, Inc.