Title :
A low-power monolithic reconfigurable direct-conversion receiver RF front-end for 802.11a/b/g applications
Author :
Yao, Guoqin ; Chi, Baoyong ; Zhang, Chun ; Wang, ZhiHua
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
A low power monolithic reconfigurable direct-conversion receiver RF front-end for 802.11a/b/g applications is presented. It consists of a reconfigurable LNA and a high linearity quadrature down-converter. The LNA could be switched between two operation bands by utilizing a fully-differential switchable inductor. With a positive feedback, the noise figure of the common gate LNA is lowered down. The quadrature down-converter could be shared for multi-band multi-mode applications due to its wide band characteristics. The RF front-end has been implemented in 180 nm CMOS process and the experimental results show that the front-end could achieve a NF of 3.6 dB at 2.4 GHz and 6.6 dB at 5 GHz while providing a gain of 33 dB at 2.4 GHz and 24 dB at 5 GHz. The front-end consumes 18 mW power and the die area is 1.2 mm × 1 mm.
Keywords :
CMOS integrated circuits; MMIC; UHF integrated circuits; low noise amplifiers; microwave frequency convertors; radio receivers; wireless LAN; CMOS process; IEEE 802.11; frequency 2.4 GHz; frequency 5 GHz; gain 33 dB; high linearity quadrature down-converter; low-power monolithic reconfigurable direct-conversion receiver; noise figure 3.6 dB; wireless local area network; wireless standards; Baseband; CMOS process; Circuits; Energy consumption; Inductors; Linearity; Noise figure; Radio frequency; Wideband; Wireless LAN; CMOS; RF; direct conversion receiver; reconfigurable; switchable inductor;
Conference_Titel :
Solid-State and Integrated-Circuit Technology, 2008. ICSICT 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2185-5
Electronic_ISBN :
978-1-4244-2186-2
DOI :
10.1109/ICSICT.2008.4734841
