Paper Info
Title
Non-Linear Shunt Regulator With RF Power Detector for RFID Applications
Abstract
This paper presents a non-linear shunt regulator based on a PWM RF power detector for RFID applications. The shunt regulator is composed of two feedback loops. The first is a fast loop based on a simple RF voltage clamp that guarantees overvoltage protection for the internal circuits. The second is an accurate loop based on a power detector circuit that slowly corrects the first loop errors according to the input RF power. The theoretical formulation of the RF-to-DC conversion in the power detector is presented and compared to a high-level implementation. A small-signal model of the complete shunt regulator was developed to assist in the CMOS circuit design. The regulator is part of a commercial low-frequency RFID transponder. It shows an improvement of 16.7 % in the maximum communication distance of the transponder with the shunt regulator enabled when compared to the previous power limiting approach using only clamping diodes.
Year
DOI
Venue
2020
10.1109/RFID49298.2020.9244827
2020 IEEE International Conference on RFID (RFID)
Keywords
DocType
ISSN
Shunt Regulator,Power Detector,PWM Power Detector,Power Regulation,RFID
Conference
2374-0221
ISBN
Citations 
PageRank 
978-1-7281-5577-7
0
0.34
References 
Authors
2
5
Name
Order
Citations
PageRank
Rafael Cantalice100.34
Fernando Paixão Cortes200.34
Eric E. Fabris31911.33
Sandro Binsfeld Ferreira400.34
hamilton klimach57120.07