A Novel Ultra-Low-Voltage CMOS RF-DC Converter for Long Range Passive RFID Applications

In this paper, an ultra-low-voltage RF-DC converter is proposed based on Cockcroft-Walton multiplier architecture and using a novel self-gate- boosting technique. The simulation results show that it produces the desired nearly-constant DC output from input RF amplitudes as low as 350 mV using conventional CMOS process without using low- threshold-voltage transistors. The converter has the lowest fabrication costs while the conversion efficiency is higher than existing converters in long distances as far as 6.7 m from the source of power emission.

کلیدواژه ها:

RF-DC converter ، wireless power transmission ، passive tags ، RFID