Phase Noise Optimization of CMOS VCO with Double-Harmonic-Tuned LC Tank

被引：0

作者：

Wei, Muh-Dey ^{[1
,2
]}

Chang, Sheng-Fuh ^{[1
]}

Liu, Xu-Wei ^{[1
]}

Ko, Gyn-Wei ^{[1
]}

机构：

[1] Natl Chung Cheng Univ, Dept Commun Engn, Ctr Telecommun Res, Dept Elect Engn, Chiayi 621, Taiwan

[2] Rhein Westfal TH Aachen, Dept Elect Engn, Mixed Signal CMOS Circuits Grp, D-52056 Aachen, Germany

来源：

40TH EUROPEAN MICROWAVE CONFERENCE | 2010年

关键词：

SOURCE DAMPING RESISTORS; QUADRATURE VCO; OSCILLATOR;

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：

A double-harmonic-tuned LC tank (DHT tank) is proposed for significant phase-noise suppression in CMOS voltage-controlled oscillator (VCO). The DHT tank presents open at the fundamental and third harmonic and short at the second harmonic, which ensures square-like output waveform to significantly suppress the flicker-noise up-conversion and the noise around 2f(o). This fundamental open and the secondharmonic short effect are valid for the entire tuning range such that low phase noise can be obtained over the entire tuning range. The measured phase noise is -137.5 dBc/Hz at 1 MHz offset from 2.53 GHz, demonstrating excellent phase noise suppression by the DHT tank. A very good figure-of-merit of -197.5 dBc/Hz is achieved.

引用

页码：1054 / 1057

页数：4

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