A fractional-N frequency synthesizer for single-chip UHF RFID reader

被引：3
|
作者：
Zhang, Run-Xi [1 ]
Chen, Yi-Hao [1 ]
Shi, Chun-Qi [1 ]
Lai, Zong-Shen [1 ]
机构：
[1] E China Normal Univ, IMCS, Shanghai 200062, Peoples R China
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2008年 / 54卷 / 01期
关键词：
DSM; fractional-N; reader; RF CMOS; synthesizer; UHF RFID;
D O I：
10.1007/s10470-007-9121-1
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A novel fractional-N frequency synthesizer which is based on delta sigma modulator (DSM) and specialized for single-chip UHF 860-to-960 MHz band radio frequency identification (RFID) reader is proposed in this paper. The fractional-N synthesizer is implemented in 0.18 mu m CMOS process. The phase noise of the fractional-N synthesizer is approximately -109 and -129 dBc/Hz at 200 kHz and 1 MHz offset from 900 MHz operating frequency while drawing 9.6 mA from 1.8 V power supply. The synthesizer is evaluated by implementing it in a direct conversion RF front-end. The front-end features a noise figure of 3.5 dB and an input-referred third-order intercept point of 5 dBm.
引用
收藏
页码：67 / 73
页数：7
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