Title :
A 2.4-GHz Fully CMOS Integrated Transmitter for 802.1lb Wireless LAN
Author :
He, Jirou ; Gao, Xiaoping ; Shen, Weilun ; Yi, Xiaofeng ; Huang, Yumei ; Hong, Zhiliang
Author_Institution :
State Key Lab of ASIC & Syst., Fudan Univ., Shanghai
Abstract :
Featuring a direct-conversion architecture, a 2.4-GHz radio-frequency (RF) transmitter frontend for 802.11b wireless LAN (WLAN) is implemented in 0.18-mum CMOS technology. Direct-conversion architecture minimizes the on-and-off-chip components required and provides a low-cost and low-power solution. The transmitter incorporates two low-pass filters (LPFs), a single-sideband (SSB) mixer, a power amplifier driver and a divide-by-two circuit for quadrature LO generation. The transmitter provides a gain control of 12 dB in 3-dB steps and an output 1-dB compression of 7.7 dBm while delivering a nominal output power of 0 dBm. The chip consumes 40 mA from a 1.8-V supply and occupies an area of 2.5 times 2 mm2 including pads
Keywords :
CMOS integrated circuits; UHF integrated circuits; low-pass filters; mixers (circuits); power amplifiers; radio transmitters; wireless LAN; 0.18 micron; 1.8 V; 12 dB; 2.4 GHz; 40 mA; CMOS integrated transmitter; RF CMOS; RF transmitter; differential quadrature phase shift keying; direct-conversion architecture; divide-by-two circuit; low-pass filters; power amplifier driver; quadrature LO generation; single-sideband mixer; wireless LAN; Amplitude modulation; CMOS technology; Driver circuits; Integrated circuit technology; Low pass filters; Power generation; Radio frequency; Radio transmitters; Radiofrequency amplifiers; Wireless LAN; 2.4GHz; 802.11b; RF CMOS; RF transmitter; differential qradrature phase shift keying (DQPSK); direct conversion; wireless; wireless LAN (WLAN);
Conference_Titel :
ASIC, 2005. ASICON 2005. 6th International Conference On
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9210-8
DOI :
10.1109/ICASIC.2005.1611330
