文章基本信息

标题：Novel Phase Noise Reduction Method for CPW-Based Microwave Oscillator Circuit Utilizing a Compact Planar Helical Resonator
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作者：Hwang, Cheol-Gyu ; Myung, Noh-Hoon
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2006
卷号：28
期号：4
页码：529-532
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：This letter describes a compact printed helical resonator and its application to a microwave oscillator circuit implemented in coplanar waveguide (CPW) technology. The high quality (Q)-factor and spurious-free characteristic of the resonator contribute to the phase noise reduction and the harmonic suppression of the resulting oscillator circuit, respectively. The designed resonator showed a loaded Q-factor of 180 in a chip area of only 40% of the corresponding miniaturized hairpin resonator without any spurious resonances. The fully planar oscillator incorporated with this resonator showed an additional phase noise reduction of 10.5 dB at a 1 MHz offset and a second harmonic suppression enhancement of 6 dB when compared to those of a conventional CPW oscillator without the planar helical resonator structure.
关键词：Helical resonator;oscillator;phase noise