DocumentCode :
597051
Title :
A power-scalable RF CMOS receiver for 2.4 GHz Wireless Sensor Network applications
Author :
Ghosal, Kanchan ; Anand, Tejasvi ; Chaturvedi, Vivek ; Amrutur, Bharadwaj
Author_Institution :
Electr. Commun. Eng. Dept., Indian Inst. of Sci., Bangalore, India
fYear :
2012
fDate :
9-12 Dec. 2012
Firstpage :
161
Lastpage :
164
Abstract :
A power scalable receiver architecture is presented for low data rate Wireless Sensor Network (WSN) applications in 130nm RF-CMOS technology. Power scalable receiver is motivated by the ability to leverage lower run-time performance requirement to save power. The proposed receiver is able to switch power settings based on available signal and interference levels while maintaining requisite BER. The Low-IF receiver consists of Variable Noise and Linearity LNA, IQ Mixers, VGA, Variable Order Complex Bandpass Filter and Variable Gain and Bandwidth Amplifier (VGBWA) capable of driving variable sampling rate ADC. Various blocks have independent power scaling controls depending on their noise, gain and interference rejection (IR) requirements. The receiver is designed for constant envelope QPSK-type modulation with 2.4GHz RF input, 3MHz IF and 2MHz bandwidth. The chip operates at 1V Vdd with current scalable from 4.5mA to 1.3mA and chip area of 0.65mm2.
Keywords :
CMOS analogue integrated circuits; analogue-digital conversion; error statistics; intermediate-frequency amplifiers; radio receivers; radiofrequency interference; wireless sensor networks; BER; IQ mixer; QPSK-type modulation; VGA; VGBWA; bandwidth 2 MHz; bandwidth 3 MHz; current 4.5 mA to 1.3 mA; frequency 2.4 GHz; interference levels; linearity LNA; low data rate wireless sensor network application; low-IF receiver; power scalable receiver architecture; power-scalable RF CMOS receiver; size 130 nm; switch power settings; variable noise; variable order complex bandpass filter; variable sampling rate ADC; voltage 1 V; Current measurement; Gain; Interference; Noise; Noise measurement; Receivers; Wireless sensor networks; 2.4GHz Receiver; Low Power Receiver; Power Scalable; Wireless Sensor Networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2012 19th IEEE International Conference on
Conference_Location :
Seville
Print_ISBN :
978-1-4673-1261-5
Electronic_ISBN :
978-1-4673-1259-2
Type :
conf
DOI :
10.1109/ICECS.2012.6463775
Filename :
6463775
Link To Document :
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