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A microwave HEMT oscillator with a directly coupled port at 4.2 K
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- Authors
- Moon-Que Lee
- Issue Date
- 2001-11
- Citation
- Microwave and Optical Technology Letters, v.31, no.3, pp.159-162
- ISSN
- 0895-2477
- Publisher
- Wiley
- Language
- English
- Type
- Journal Article
- Abstract
- An X-band HEMT oscillator is designed and tested at the cryogenic temperature of liquid helium. The designed oscillator has a directly coupled port in addition to an output port to obtain circuit simplicity. For the novel oscillator configuration, an analytic design formula of the feedback network is derived. The measured data at cryogenic temperature show a significantly improved phase noise and output power compared to the performance of an oscillator operating at room temperature. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett.
- KSP Keywords
- Analytic design, Cryogenic temperature, Design formula, Output power, Room-temperature, feedback network, liquid helium, measured data, phase noise, x-band