Title :
A CMOS Transmitter Front-End for Mobile UHF RFID Reader
Author :
Xu Ping ; He Wei ; Lai Zongsheng
Author_Institution :
Inst. of Microelectron. Circuit & Syst., East China Normal Univ., Shanghai, China
Abstract :
This paper describes a 900 MHz CMOS transmitter front-end for mobile UHF RFID reader including an I/Q up-mixer for frequency translation from IF to RF and a driver amplifier for signal pre-amplification. The proposed up-mixer can realize all the three modulation schemes specified in EPC Global C1G2 protocol. The driver amplifier can offer a seven-class adjustable conversion gain through a 3-bit gate bias control. Fabricated in IBM 0.18 mum CMOS process, the transmitter frontend consumes a minimum current of 14 mA from a 1.8 V power supply. The experimental results show that the up-mixer achieves -4.9 dBVrms IIP3, 3.18 dB conversion gain and 13.20 dB NF, and the DA features 13.5 dBm OIP3 at 50 Omega, 7.90-16.30 dB conversion gain variation and 3.10-5.00 dB NF range.
Keywords :
CMOS integrated circuits; mobile radio; radiofrequency identification; CMOS transmitter front-end; I-Q up-mixer; current 14 mA; driver amplifier; frequency 90 MHz; frequency translation; gain 3.18 dB; gain 7.90 dB to 16.30 dB; mobile UHF RFID reader; noise figure 7.90 dB to 16.30 dB; signal preamplification; size 0.18 mum; voltage 1.8 V; CMOS process; Driver circuits; Gain; Noise measurement; Protocols; RF signals; Radio frequency; Radiofrequency amplifiers; Radiofrequency identification; Transmitters;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5303590
