An X-band low phase noise oscillator employing a four-pole elliptic-response microstrip bandpass filter

被引：0
|
作者：
Choi, Jonghoon [1 ]
Chen, Meng-Hung [1 ]
Mortazawi, Amir [1 ]
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48109 USA
来源：
2007 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-6 | 2007年
关键词：
microwave oscillators; phase noise; group delay; bandpass filters; elliptic filters;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a low phase noise planar oscillator employing an elliptic bandpass filter as a frequency stabilization element within its feedback loop is presented. The oscillator phase noise is significantly reduced by taking advantage of the group delay peaks formed at the passband edges of an elliptic filter. An X-band oscillator using a SiGe HBT packaged transistor has been designed and tested. At the oscillation frequency of 9 GHz, the measured phase noise is -140 dBc/Hz at 1 MHz offset frequency. The oscillator exhibits an output power of 15 dBm with a figure of merit of -204.4 dBc/Hz.
引用
收藏
页码：1524 / 1527
页数：4
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