Low phase-noise and low-power CMOS VCO constructed in current-reused configuration

被引：30

作者：

Yang, Chin-Lung ^{[1
]}

Chiang, Yi-Chyun ^{[1
]}

机构：

[1] Chang Gung Univ, Inst Elect Engn, Tao Yuan 333, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 02期

关键词：

current-reused feature; low phase-noise; voltage-controlled oscillator (VCO);

D O I：

10.1109/LMWC.2007.915138

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 Ku-band CMOS voltage-controlled oscillator (VCO) constructed in a modified current-reused configuration is presented in this letter. Two dc level shifters combined into two metal-insulator-metal capacitors are adopted to solve the transconductance and load mismatch problems of the conventional current-reused VCO for obtaining more symmetrical oscillation signals and lowering the phase noise of oscillator. A prototype was designed and measured to verify the design concept. The measurement results demonstrate the central oscillation signal of 16 GHz to be associated with the 900 MHz tuning range and -111 dBc/Hz phase noise at 1 MHz offset. The power consumption of the VCO core is only 8.1 mW. The measurement result evaluated by means of a figure of merit is about -186.8 dBc/Hz.

引用

页码：136 / 138

页数：3

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