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http://dx.doi.org/10.6109/JKIICE.2008.12.1.17

High-Performance Millimeter Wave Harmonic Output Oscillator using Sub-Harmonic Wave Injection-Synchronization  

Choi, Young-Kyu (신라대학교 전자공학과)
Nam, Byeong-Gun (신라대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.12, no.1, 2008 , pp. 17-24 More about this Journal
Abstract
This paper deals with a millimeter wave source which is utilizing sub-harmonic injection-synchronization technique. A 8.7GHz oscillator with MES-FET is fabricated, and is driven as a harmonic output oscillator at 17.4GHz by means of sub-harmonic injection-synchronization. The oscillator operates as a multiplier as well as oscillator in this system. Adopting this technique, we can obtain a high stable, high frequency millimeter wave source even though self-oscillating frequency of an oscillator is relatively low. In the experiments, the range of injection-synchronization is about 26MHz and is proportional to the input sub-harmonic power. From the spectrum analysis of the 2nd harmonic output. we blow that the phase noise of the harmonic oscillator is remarkably decreased.
Keywords
Harmonic oscillator; millimeter wave source; active oscillator; sub-harmonic injection;
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