CMOS Implementation of an RF PLL Synthesizer for Use in RFID Systems
Xie Weifu, Yongming Li, Chun Zhang, Zhihua Wang
Abstract
Xie Weifu, Yongming Li, Chun Zhang, Zhihua Wang
Abstract
An integrated RF PLL frequency synthesizer for use in RFID systems is presented.It integrates a voltage-controlled oscillator,phase frequency detector,charge pump,high-frequency dual-modulus divider,and digital programmable divider.The frequency synthesizer was implemented in a 0.18μm CMOS process.It uses a 13MHz crystal oscillator as input.The output range is from 860 to 960MHz,the phase margin is -123dBc/1MHz,the frequency step is 200kHz,and the change frequency is within 150μs.
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An integrated RF PLL frequency synthesizer for use in RFID systems is presented.It integrates a voltage-controlled oscillator,phase frequency detector,charge pump,high-frequency dual-modulus divider,and digital programmable divider.The frequency synthesizer was implemented in a 0.18μm CMOS process.It uses a 13MHz crystal oscillator as input.The output range is from 860 to 960MHz,the phase margin is -123dBc/1MHz,the frequency step is 200kHz,and the change frequency is within 150μs.
Key concepts: Frequency synthesizer, Phase-locked loop, Frequency divider, Voltage-controlled oscillator, Phase frequency detector, Direct digital synthesizer, CMOS, Electronic engineering