UHF RFID阅读器中线性化调谐增益压控振荡器设计  

Design of Voltage Controlled Oscillator with Linearized Tuning-Gain for UHF RFID Transceiver IC

作　　者：谢磊[1] 刘宝宝[1] 谢淼[1] 袁圣越[1] 石春琦[1] 张润曦[1] 

机构地区：[1]华东师范大学微电子电路与系统研究所,上海200062

出　　处：《微电子学》2013年第1期41-46,共6页Microelectronics

基　　金：超高频RFID读写器芯片研发及产业化合作项目(48302011);华东师范大学科研创新基金资助项目(78210082);复旦大学专用集成电路与系统国家重点实验室开放课题(10KF013)

摘　　要：基于标准0.18μm RF-CMOS工艺,实现了一个可应用于UHF RFID阅读器的低相位噪声、线性化调谐增益(KVCO)、恒定子带间距的压控振荡器。该振荡器包括开关变容管阵列和开关电容阵列,实现了调谐增益线性化及子带间距恒定化。仿真结果表明,当压控振荡器在1.52GHz至2.16 GHz(35.5%)的频率范围变化时,调谐增益从40 MHz/V变化到51 MHz/V(21.5%),子带间距变化为34 MHz到51 MHz,相位噪声在1.8GHz时为-133.8dBc/Hz@1MHz。在低压差线性稳压器(LDO)输出电压为2.5V的条件下,整个电路消耗电流约5.2mA。Based on standard 0.18 μm RF-CMOS process,a low phase noise VCO with linearized tuning-gain and constant bandwidth for UHF RFID reader was presented.Switched varactor array（SVA） and switched capacitor array（SCA） were introduced to realize tuning-gain linearization and constant bandwidth.Simulation results showed that,for frequencies varying from 1.52 GHz to 2.16 GHz（35.5%）,the VCO had a tuning gain from 40 MHz/V to 51 MHz/V（21.5%）,a bandwidth varying from 34 MHz to 51 MHz and a phase noise of-133.8 dBc/Hz at 1 MHz offset from 1.8 GHz operating frequency.The whole circuit consumed a current of about 5.2 mA from a 2.5 V LDO biased power supply.

关 键 词：压控振荡器 调谐增益 低相位噪声 开关变容管阵列 开关电容阵列 

分 类 号：TN432[电子电信—微电子学与固体电子学] TN713.4