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
收藏
页码：413 / 415
页数：3
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