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RF Energy Converter on nanoscale MOSFETs for passive wireless applications
Authors
	Sinyukin A.S.
	Konoplev B.G.
	Kovalev A.V.
Date of publication
	2020
DOI
	10.31114/2078-7707-2020-3-218-223
Abstract
	Currently passive wireless microdevices have became widespread in such areas as industry, construction activity, commercial activity, logistics, and medicine. The most ubiquitous applications which are using passive wireless devices are radiofrequency identification (RFID), wireless sensor networks (WSN) and Internet of Things (IoT). Passive wireless devices harvest energy for power supplying by radiofrequency waves. However radiofrequency energy can’t be utilized by passive devices directly, so RF-to-DC energy converters are necessary. Besides to enhance the output voltage level the voltage multipliers are used. The RF energy converter for passive wireless applications based on MOS transistors has been developed in this work. The modification of the multiplier circuit based on new connection of MOSFET’s terminals has been proposed. The proposed modification allows significantly attenuate the body effect of MOS transistor and thus increases both the output voltage of multiplier and the voltage multiplication efficiency. Moreover this modification permits to implement the energy converter using standard CMOS technologies. The compact voltage multiplier models considering the real voltage drops on diode-connected MOS transistors for weak inversion region have been presented. Research & Development of RF energy converter have been conducted using Tanner EDA system and in particular T-Spice module for circuit analysis and transients study. Simulation of the device was performed using BSIM4 model of nanoscale MOSFETs. The influence of different parameters such as number of multiplier stages, transistor sizes, capacitance, input voltage amplitude on the output voltage and voltage multiplication efficiency has been investigated. The results of T-Spice simulations and the evaluations by proposed expressions have been compared and the agreement level is acceptable.
Keywords
	RFID, Wireless Power Transfer, Body Effect, Integrated Form, Subthreshold Operation.
Library reference
	Sinyukin A.S., Konoplev B.G., Kovalev A.V. RF Energy Converter on nanoscale MOSFETs for passive wireless applications // Problems of Perspective Micro- and Nanoelectronic Systems Development - 2020. Issue 3. P. 218-223. doi:10.31114/2078-7707-2020-3-218-223
URL of paper
	http://www.mes-conference.ru/data/year2020/pdf/D081.pdf