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A Study on the new structure Voltage Controlled Hair-pin Resonator Oscillator using parallel feedback of second-harmonic  

민준기 (광운대학교 전파공학과 초고주파 연구실)
하성재 (광운대학교 전파공학과 초고주파 연구실)
이근태 (광운대학교 전파공학과 초고주파 연구실)
안창돈 (광운대학교 전파공학과 초고주파 연구실)
홍의석 (광운대학교 전파공학과 초고주파 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.5C, 2002 , pp. 530-534 More about this Journal
Abstract
In the thesis, For improving the Stability of VCHRO(Voltage Controlled Hair-pin Resonator Oscillator) the new structure using the parallel feedback of the second harmonic is proposed for self-phase locking effect. This module is composed of wilkinson divider, frequency doubler, directional coupler, and bandpass filter using a hair-pin resonator, which are integrated into miniaturized hybrid circuit. The module exhibits output power of 2.5 dBm at 19.5 GHz, -29.83 dBc fundamental frequency suppression and -76.52 dBc/Hz phase noise at 10 kHz offset frequency from carrier of center frequency 19.5 GHz.
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