Optimization of the phase noise of LC VCO in UHF RFID Reader

被引：0
|
作者：
He, Wei [1 ]
Xu, Ping [1 ]
Lai, Zongsheng [1 ]
机构：
[1] E China Normal Univ, Inst Microelect Circuit & Syst, Shanghai 200062, Peoples R China
来源：
2009 5TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-8 | 2009年
关键词：
CMOS; low-dropout-regulator(LDO); voltage control oscillator; phase noise; radio frequency identification;
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 low phase noise LC voltage controlled oscillator for UHF radio frequency identification reader is presented in this paper. Symmetrical LC resonators and a low-dropout-regulator are used to suppress the noise from tail current and power supply, respectively. 3-bit switched-capacitor array for coarse tuning followed by MOS varactors for fine tuning to ensure a Low voltage controlled oscillator gain (<48MHz/V). The circuit is implemented in IBM 0.18 mu m CMOS process, and the measured phase noise is -136.25dBc/Hz at 1MHz offset from the carrier while drawing 4.5mA from a 3.3V supply.
引用
收藏
页码：3721 / 3724
页数：4
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