用于UHF RFID的功率放大器设计

摘要

Power amplifier is one of the most important components in RFID system. This paper presents a linear power amplifier for RFID application. The PA is fabricated in TSMC 0.18 μm CMOS process. The power amplifier provides an output power of 17.8 dBm with a saturation efficiency of 40% at 915 MHz. The output 1 dB compression point is 15.4 dBm. The PA has a small signal gain of 28.7 dB.%功率放大器是UHF RFID系统的重要模块,也是RFID系统中功耗最大的器件.本文采用TSMC0.18rf CMOS工艺,设计了一款用于RFID的线性功率放大器.在915 MHz频段,最大输出功率为17.8 dBm,饱和效率达到了40％,输出1dB压缩点(P1dB)为15.4 dBm,其小信号增益达到了28.7dB.