Hofbeck, K. and Schomburg, E. and Grenzer, J. and Renk, K. F. and Pavel'ev, D. G. and Koschurinov, Y. and Melzer, B. and Ivanov, S. and Kop'ev, P. S. (1998) Frequency-locked GaAs/AlAs superlattice oscillator for tunable narrowband microwave generation. IEEE MICROWAVE AND GUIDED WAVE LETTERS, 8 (12). pp. 427-429. ISSN 1051-8207
Full text not available from this repository.Abstract
We observed frequency locking of a wide-miniband GaAs/AlAs superlattice oscillator. The oscillator showed a free self-sustained current oscillation giving rise to microwave generation (power 100 mu W) at a natural frequency (near 5 GHz) and ultraharmonics. A narrowband driving field locked the oscillator and caused a drastic narrowing (from 10(6) Hz to less than 10 Hz) of the halfwidths of the microwave lines, now centered at the driving frequency and its harmonics; at a driving power of 10 mu W me obtained a locking range of 1% around the natural frequency, Our experiment, performed with a superlattice integrated in a planar microwave circuit, shows that a locked superlattice oscillator is suitable for tunable narrowband generation of high-frequency radiation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | locked oscillators; microwave oscillators; semiconductor superlattices |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Karl F. Renk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Feb 2023 07:49 |
| Last Modified: | 09 Feb 2023 07:49 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49296 |
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