Implementation of a low-cost and low-power batteryless transceiver SoC for UHF RFID and wireless power transfer system

This paper describes a low-power, high-performance RFID tag and wireless power transfer IC for according to the requirements of the EPC Class 1 Generation 2. Operating in the frequency ranges of 860 ~ 960 MHz, the reading operation of tag IC is the -15 dBm minimum power sensitivity. The tag IC consists of an analog part for modulation/demodulation/oscillation, a digital control logic part for controlling the transceiver functionality, and a 512-bit non-volatile memory (NVM) for storing EPC code and a unique identification number. The UHF RFID tag IC is implemented in the 0.18 μm CMOS standard technology. The overall power consumption is only 6 μW at 1.3 V supply voltage. The chip size is 610 μm × 615 μm.

I. Introduction

Radio frequency identification (RFID) technology has highly developed to standards, service, and hardware technology over the last few years. It is currently used for a variety of application such as personal access, building security, logistics, supply chain management, equipment tracking, healthcare, and so on [1]. For various services, the function of the reader should be multiple and the cost of the tag should be especially cheap and. Therefore, the design of a low cost, low power RFID tag chip is very important and it is really a variety of challenge [2].