Title :
A low voltage VGA for RFID receivers
Author :
Bin Idris, Md Idzdihar ; Bin Ibne Reaz, Mamun ; Bhuiyan, Mohammad Arif Sobhan
Author_Institution :
Dept. of Electr., Univ. Kebangsaan Malaysia, Bangi, Malaysia
Abstract :
RFID is a worldwide attractive technology for reliable wireless communication system. Automatic gain control system of such devices is very important which is performed by Variable Gain Amplifier (VGA). In this paper, a class AB VGA, consisting of a linear transconductor amplifier and a linear transimpedance amplifier, is designed and simulated in CEDEC (software for design and simulation of ICs) 0.18-μm CMOS process for low power and high speed RFID receivers. The simulation result show that, the proposed VGA has a wide bandwidth of 100 MHz and dissipates power less than 125 uW at 1 V supply voltage. From the results it is also apparent that the circuit is capable of working with high linearity and wide bandwidth. Good frequency response (Gain) and the wide bandwidth of this class AB VGA makes it suitable for low power RFID receiver transceivers.
Keywords :
CMOS integrated circuits; automatic gain control; low-power electronics; operational amplifiers; radio transceivers; radiofrequency identification; radiofrequency power amplifiers; CEDEC; CMOS process; automatic gain control system; class AB VGA; frequency response; high speed RFID receivers; linear transconductor amplifier; linear transimpedance amplifier; low power RFID receiver transceivers; low voltage VGA; reliable wireless communication system; variable gain amplifier; Bandwidth; CMOS integrated circuits; Gain; Radio frequency; Radiofrequency identification; Receivers; Transistors; CMOS; Low Voltage; RFID; Variable Gain Amplifier (VGA);
Conference_Titel :
RFID-Technologies and Applications (RFID-TA), 2013 IEEE International Conference on
Conference_Location :
Johor Bahru
Electronic_ISBN :
978-1-4799-2114-0
DOI :
10.1109/RFID-TA.2013.6694544