Voltage Regulation System for UHF RFID Tags

This paper presents the design of a Voltage Regulation System for UHF Passive RFID Tags which consists of a Clamp Circuit and LDO Voltage Regulator. The Clamp's current consumption is 100nA and 1μA when the voltage reaches levels of 2.6V and 3.6V, respectively. LDO Voltage Regulator is capable of supplying a load current of 4.5 μA with only a current consumption of 900nA. The LDO Voltage Regulator has an overall efficiency of 73%, provides a load regulation of 25.53mV/μA and a settling time of 4μs. The design, simulation and layout are realized using 0.50 μm technology ON-SEMI two poly — three metal.