Adaptive Noise-Resistant Low-Power ASK Demodulator Design in UHF RFID Chips

Autor:	Yao-Hua Xu, Shuai Yang, Hang Li, Ji-Ming Lv, Na Bai
Rok vydání:	2021
Předmět:	RFID differential operational amplifier hysteresis of input TK7800-8360 ASK demodulator Computer Networks and Communications Hardware and Architecture Control and Systems Engineering Signal Processing Electronics Electrical and Electronic Engineering
Zdroj:	Electronics, Vol 10, Iss 3168, p 3168 (2021) Electronics; Volume 10; Issue 24; Pages: 3168
ISSN:	2079-9292
DOI:	10.3390/electronics10243168
Popis:	This paper presents a new signal demodulator for ultra-high frequency (UHF) radio frequency identification (RFID) tag chips. The demodulator is used to demodulate amplitude shift keying (ASK) modulated signals with the advantages of high noise immunity, large input range and low power consumption. The demodulator consists of a charge pump, an envelope detector, and a comparator. In particular, the demodulator provides a hysteresis input signal to the comparator through two envelope detectors, resulting in better noise immunity. The demodulator is based on a standard 0.13 µm CMOS process. The demodulator is suitable for demodulating high frequency signals at 900 MHz with a data rate of 128 Kbps and can operate up to 78 °C. The input signal has a peak of 1.2 V and consumes as little as 113.6 nW. The demodulator also has a noise immunity threshold of approximately 3.729 V.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::151c915efad97badfbd54ada98feff86 https://doi.org/10.3390/electronics10243168 Zobrazit plný text záznamu