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An effective approach to phase-noise reduction for microwave sources
Article first published online: 5 AUG 2003
DOI: 10.1002/mop.11119
Copyright © 2003 Wiley Periodicals, Inc.
1098-2760/asset/cover.gif?v=1&s=e392639464276853e6605df394388ece8e15fa91 "Microwave and Optical Technology Letters")
Additional Information
How to Cite
Xu, Y. and Bosisio, R. G. (2003), An effective approach to phase-noise reduction for microwave sources. Microw. Opt. Technol. Lett., 39: 36–39. doi: 10.1002/mop.11119
Publication History
- Issue published online: 5 AUG 2003
- Article first published online: 5 AUG 2003
- Manuscript Received: 12 MAR 2003
- Abstract
- References
- Cited By
Keywords:
- phase noise;
- oscillator;
- six-port technology;
- six-port comparator;
- phase measurement
Abstract
In this paper, a new method of phase-noise reduction for microwave sources is proposed. The phase noise is reduced from a microwave signal generator or microwave oscillator without need of high-Q components. The output of the microwave source is compared with its delayed counterpart using a six-port comparator. The detected phase-difference signal is used to make corrections to the original microwave signal in order to reduce its phase variation due to noise effect. A schematic diagram of this approach is provided and its feasibility is tested by analysis and simulation. Analysis shows that the introduction of the six-port comparator for phase-noise reduction is very effective; a great amount of phase noise can be removed and the quality of the microwave signal is improved significantly. The implementation of this approach is also discussed. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 36–39, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11119