Several key issues in single-chip UHF RFID reader design

摘要

Several key issues including system noise figure, input linearity, LO phase noise performance and transceiver setting-up time are recapitulated in this paper for the design of singlechip UHF RFID reader. The reader Rx noise figure is different between LBT and normal mode. The input linearity is decided by the maximum interferer due to Tx-to-Rx leakage. Phase noise requirements are to meet with Tx transmission spectrum mask, and withhold adjacent interferer and in-band self-jammer. The transceiver setting-up time is determined by the larger value between frequency synthesizer switching time and DC-offset removal time. A low-power low-cost single-chip 0.18μm CMOS UHF RFID reader transceiver is verified based on the foregoing analyses.