论述了一种用于无源射频电子标签的微功耗高灵敏度解调器。在普通RF CMOS工艺中,采用一种新颖的自偏置包络检波电路结构,实现了解调器的微功耗、高灵敏度特性。解调器的工作频率范围为840~960MHz,ASK调制信号频率范围为40~160kHz,功耗仅为0.3μW,实测灵敏度可达-15dBm。 A micropower high sensitivity demodulator for passive radio frequency electronic tags is discussed. In the ordinary RF CMOS process, a novel self-offset envelope detection circuit structure is adopted, which realizes the micropower consumption and high sensitivity of the demodulator. Demodulator operating frequency range of 840 ~ 960MHz, ASK modulation signal frequency range of 40 ~ 160kHz, power consumption is only 0.3μW, the measured sensitivity up to-15dBm.