Title :
A 2.4-GHz CMOS RF front-end for wireless sensor network applications
Author :
Arasu, M. Annamalai ; Ong, Henry Kok Fong ; Choi, Yeung Bun ; Yeoh, Wooi Gan
Author_Institution :
Inst. of Microelectron.
Abstract :
A 2.4-GHz fully-differential RF front-end on 0.18-mum CMOS technology for wireless sensor network (WSN) applications consuming 4.8-mW from a 1.8-V supply is presented. The direct conversion RF-front end comprises of low-noise amplifier (LNA), I/Q direct-conversion mixers, quadrature LO generator and LO buffers. By employing conventional source degenerated LNA, passive mixer, to eliminate flicker noise, RC poly-phase filter for quadrature LO generation, and LO buffers employing current reuse technique, we achieve 23-dB conversion gain, 8.1-dB noise figure, -15-dBm IIP3 and better than 15-dB input return loss for the RF front-end
Keywords :
CMOS integrated circuits; UHF oscillators; buffer circuits; low noise amplifiers; low-power electronics; mixers (circuits); radiofrequency integrated circuits; transceivers; wireless sensor networks; 0.18 micron; 1.8 V; 2.4 GHz; 23 dB; 4.8 mW; 8.1 dB; CMOS technology; I/Q direct-conversion mixers; LO buffers; RC poly-phase filter; current reuse technique; direct conversion RF-front end; flicker noise; low-noise amplifier; passive mixer; quadrature LO generator; wireless sensor network; CMOS process; CMOS technology; Energy consumption; Filters; Impedance matching; Low-noise amplifiers; Noise figure; Radio frequency; Voltage; Wireless sensor networks;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651177
