Title :
A 2.4-GHz sub-mW CMOS receiver front-end for wireless sensors network
Author :
Taeksang Song ; Hyoung-Seok Oh ; Songcheol Hong ; Euisik Yoon
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
fDate :
4/1/2006 12:00:00 AM
Abstract :
A 2.4-GHz fully integrated CMOS receiver front-end using current-reused folded-cascode circuit scheme is presented. A configuration utilizing vertically stacked low-noise amplifier (LNA) and a folded-cascode mixer is proposed to improve both conversion gain and noise figure suitable for sub-mW receiver circuits. The proposed front-end achieves a conversion gain of 31.5dB and a noise figure of 11.8dB at 10MHz with 500-μA bias current from a 1.0-V power supply. The conversion gain and noise figure improvements of the proposed front-end over a conventional merged LNA and single-balanced mixer are 11dB and 7.2dB at 10MHz, respectively, with the same power consumption of 500μW.
Keywords :
CMOS integrated circuits; UHF amplifiers; UHF integrated circuits; UHF mixers; low noise amplifiers; radio receivers; wireless sensor networks; 1.0 V; 10.0 MHz; 11.0 dB; 11.8 dB; 2.4 GHz; 31.5 dB; 500 muA; 7.2 dB; CMOS receiver front-end; conversion gain; current-reused folded-cascode circuit; flicker noise; folded-cascode mixer; low-noise amplifier; noise figure; wireless sensors network; Circuits; Energy consumption; Low-noise amplifiers; Noise figure; Performance gain; Power supplies; Radio frequency; Signal to noise ratio; Transceivers; Wireless sensor networks; Conversion gain; current-reusing; flicker noise; folded cascode; noise figure; signal-to-noise ration (SNR);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.872117
