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Phase‐noise reduction of voltage‐controlled dielectric resonator oscillator for the X‐band
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- Authors
- In Bok Yom, Dong Hwan Shin, Keun Kwan Ryu, Seung Hyeub Oh, Moon Que Lee
- Issue Date
- 2005-12
- Citation
- Microwave and Optical Technology Letters, v.47, no.6, pp.515-518
- ISSN
- 0895-2477
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- 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 frequency-control circuit, in order to empirically demonstrate the phase-noise reduction. The experimental results show that the phase-noise reduction can be enhanced 8 dBc/Hz at 100-KHz offset frequency by using a frequency-controlled circuit with coupled microstriplines, as compared to the conventional VCDRO. © 2005 Wiley Periodicals, Inc.
- KSP Keywords
- Control Circuit, Dielectric Resonator Oscillator(DRO), Dielectric resonator(DR), Noise reduction(NR), Oscillating frequency, phase noise, voltage controlled