Title :
A highly integrated IEEE802.11b/g WLAN transceiver
Author :
Wang, Haiyong ; Yang, Lei ; Xu, Zuohai ; Yang, Yuan ; Dou, Yujiao ; Su, Zhigang ; Wu, Nanjian
Author_Institution :
LHWT Microelectron. Co., Beijing, China
Abstract :
The paper presents a fully integrated two-receive-path and one-transmit-path CMOS radio transceiver chip compliant with 2.4GHz IEEE802.11b/g WLAN standards. The transceiver chip is based on direct-conversion architecture and integrates LNAs, mixers, filters, VGA, frequency synthesizer with on-chip VCO and voltage reference circuit in 0.25μm CMOS process. It can improve the SNR characteristic of the communication system about 3∼6 dB. It increases the cover-range and reduces the influence of the multipath effect significantly. The noise figure is less than 5dB in a receive-path. The consumption currents of the receivers and transmitter are 120mA and 110mA at 2.5V power supply, respectively.
Keywords :
IEEE standards; UHF integrated circuits; telecommunication standards; transceivers; wireless LAN; 0.25 micron; 0.25micron CMOS process; 110 mA; 120 mA; 2.4 GHz; 2.5 V; IEEE802.11b-g WLAN transceiver; SNR characteristic; direct-conversion architecture; frequency synthesizer; integrated CMOS radio transceiver chip; multipath effect reduction; on-chip VCO; one-transmit-path transceiver; two-receive-path transceiver; voltage reference circuit; CMOS process; Circuits; Filters; Frequency synthesizers; Noise figure; Radio transceivers; Signal to noise ratio; Voltage; Voltage-controlled oscillators; Wireless LAN;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606509
