We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Prototype of a microwave generator with a high-temperature superconductor disk resonator in a feedback circuit with a low phase-noise level.
- Authors
Parafin, A.; Masterov, D.; Pavlov, S.; Krevskii, M.; Korobkov, G.; Krevskii, I.
- Abstract
Phase noise of a prototype of microwave generator with a disk resonator based on high-temperature superconductor (HTSC) YBaCuO films in the feedback circuit has been measured for the first time. The disk resonator was cooled to a temperature of 77 K, while the other generator components remained at room temperature. The generator carrier frequency was 7.5 GHz. Phase noises have been measured for different offsets from the carrier frequency. For example, the minimum measured phase-noise level was found to be 136.2 dB/Hz for a 10-kHz offset from the carrier frequency. It is shown that the results obtained correspond to the classical Leeson formula with flicker noise neglected. Thus, a disk resonator based on YBaCuO films does not introduce additional noise (in comparison with the amplifier noise) at small offsets and, correspondingly, is promising for microwave generators with extremely low phase noise. The possibility of further decrease in the phase-noise level by increasing the Q factor of the HTSC disk resonator and optimizing its housing design is discussed.
- Subjects
MICROWAVES; HIGH temperature superconductors; PHASE noise; YTTRIUM barium copper oxide films; ELECTRIC generators; ELECTRONIC circuits; ELECTRIC resonators; PROCESS optimization
- Publication
Technical Physics Letters, 2013, Vol 39, Issue 12, p1060
- ISSN
1063-7850
- Publication type
Article
- DOI
10.1134/S1063785013120110