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http://dx.doi.org/10.12815/kits.2012.11.5.089

Design of a Low Phase Noise Oscillator Using an Interdigital Hairpin Resonator for UTIS  

Jung, Tae-Sung (광운대학교 전파공학과)
Lee, Hyun-Wook (광운대학교 전파공학과)
Kwon, Sung-Su (광운대학교 전파공학과)
Lee, Myung-Gil (광운대학교 전파공학과)
Lee, Jong-Chul (광운대학교 전자융합공학과)
Yoon, Ki-Cheol (한국과학기술원 정보전자연구소)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.11, no.5, 2012 , pp. 89-96 More about this Journal
Abstract
In this paper, a low phase noise oscillator is designed using an interdigital hairpin resonator for UTIS (Urban Traffic Information Systems). The interdigital hairpin resonator has several characteristics compared with a conventional hairpin resonator, which are 70% size reduction and improvement of harmonic characteristics. In addition, Q (Quality factor) of the interdigital hairpin resonator is about 132, which is suitable for the design of a low phase noise oscillator. The oscillator suggested in this paper shows the output power of 12 dBm and the phase noise characteristic of -100.8 dBc/Hz at 100 kHz offset frequency from the center frequency of 5.75 GHz. The phase noise is improved by about 12 dB compared with a conventional oscillator using an interdigital hairpin resonator.
Keywords
UTIS; quality factor; phase noise; oscillator; interdigital hairpin resonator;
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