A 147?W, 0.8V and 7.5 (mV/V) LIR regulator for UHF RFID application
In this paper a low power consumption regulator has been proposed for ultra high frequency (UHF) RFID tag that has a stable output voltage. The sub-blocks of the regulator are supplied with the elementary stage output of the rectifier. The proposed operational amplifier (OPA) circuit works in class-AB and it is biased by an adaptive biasing circuit. Besides, in the proposed regulator the used bandgap reference (BGR) circuit and the sampling circuit are based on CMOS technology and they have low power consumption. The output of this regulator is 0.81V that has 1.5mV ripple. The values of LIR, PSRR and the efficiency of the regulator are about 7.5 (mV/V), 42.5dB and 53% respectively. Considering 10K? load, the power consumption of the regulator has been calculated as 147?W. The operating frequency is 960MHz and it is simulated in TSMC 0.18?m CMOS technology.
regulator rfid low power consumption operational amplifier (opa) bandgap reference (bgr)