Title :
A 1.65 mW direct-conversion receiver for UHF RFID readers
Author :
Zhang Chun ; Zhang Wenqiang ; Wang Ziqiang ; Wang Jingchao
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
A 900 MHz direct-conversion receiver for UHF RFID readers with low power, high linearity, and low noise in UMC 0.18 ¿m CMOS technology is proposed. This receiver possesses I/Q two paths and each path consists of a passive mixer, an IF amplifier, a RC low-pass filter and a comparator. It supports a LO frequency from 860 MHz to 960 MHz and a data rate from 40 kb/s to 1 Mb/s which are in accordance with the requirements of global UHF RFID specifications. The simulation results show that the input 1dB compression point is +5 dBm, and the noise figure is 6.88 dB. The sensitivity of this receiver is -70 dBm with a power consumption of only 1.65 mW. The layout area is 1.9 mm × 0.75 mm.
Keywords :
CMOS integrated circuits; UHF integrated circuits; radiofrequency identification; IF amplifier; RC low-pass filter; UHF RFID readers; UMC CMOS technology; bit rate 40 kbit/s to 1 Mbit/s; comparator; direct-conversion receiver; frequency 860 MHz to 960 MHz; noise figure 6.88 dB; passive mixer; power 1.65 mW; size 0.18 mum; Baseband; CMOS technology; Energy consumption; Filters; Linearity; Microelectronics; Radio frequency; Radio transmitters; Radiofrequency identification; Receivers; 0.18 µm; 900 MHz; Direct-conversion; RFID; UHF; down-conversion mixer; low power; receiver;
Conference_Titel :
Microelectronics & Electronics, 2009. PrimeAsia 2009. Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4668-1
Electronic_ISBN :
978-1-4244-4669-8
DOI :
10.1109/PRIMEASIA.2009.5397436
