## Abstract A different approach for phase‐noise reduction of a HEMT VCDRO (voltage‐controlled dielectric resonator oscillator) with coupled microstriplines to tune the oscillating frequency is investigated. Two HEMT VCDROs of 9.8 GHz are manufactured in the same configuration, except for the frequ
Phase-noise measurement of free-running microwave voltage-controlled oscillators
✍ Scribed by Hoi-Yee Ng; Kim-Fung Tsang; Chung-Ming Yuen
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 128 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This paper reports an efficient method to measure the phase noise of free‐running microwave voltage‐controlled oscillators using a general‐purpose spectrum analyzer. The system tracks the frequency drifting signal by using a charge pump phase‐locked loop. The measurements taken on a 1.9‐GHz oscillator demonstrates the system accuracy. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 216–217, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20773
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