Current reusing VCO and divide-by-two frequency divider for quadrature LO generation

被引：36

作者：

Park, Kyung-Gyu ^{[1
]}

Jeong, Chan-Young ^{[1
]}

Park, Jae-Woo ^{[1
]}

Lee, Jang-Woo ^{[1
]}

Jo, Jun-Gi ^{[1
]}

Yoo, Changsik ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect & Comp Engn, Integrated Circuits Lab, Seoul 133791, South Korea

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 06期

关键词：

CMOS; current reusing; frequency divider; quadrature local oscilator (LO); voltage controlled oscillator (VCO);

D O I：

10.1109/LMWC.2008.922674

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：

For low-power and accurate quadrature local oscillator (LO) signal generation, an LC-tank voltage controlled oscillator (VCO) operating at double the required LO-frequency reuses the bias current of divide-by-two frequency divider. The current reusing VCO and divide-by-two frequency divider are targeted to generate the LO signals for a 1.57 GHz global positioning system receiver. Implemented in a 0.18 mu m CMOS technology, the current reusing VCO and divide-by-two frequency divider consumes 1.7 mA from a 1.8 V supply. The measured phase noise is - 120 dBc/Hz at 1 MHz offset when the carrier frequency is 1.57 GHz.

引用

页码：413 / 415

页数：3

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