Title :
W-CDMA RF module design with direct modulation
Author :
Liu, Jin ; Zhou, Jianyi ; Zhu, Xiaowei ; Chen, Jixin ; Hong, Wei
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
Abstract :
This paper presents a direct I/Q modulation scheme for RF module design in W-CDMA MT. The RF module is consists of I/Q quadrature modulator at 1920~1980 MHz and I/Q demodulator at 190 MHz, IF AGC amplifiers, LNA/mixers, power amplifier and PLL local oscillators, etc. The noise figure and sensitivity of receiver and the ACPR of transmitter in the RF module are simulated. Finally, experimental results of receiving level and transmitting power versus controlling voltage are shown. The carrier suppression and ACPR are less than -40 dBc
Keywords :
broadband networks; code division multiple access; mobile radio; modulation; telecommunication terminals; 190 MHz; 1920 to 1980 MHz; ACPR; RF module; W-CDMA mobile terminal; carrier suppression; direct I/Q modulation; noise figure; sensitivity; Demodulation; Local oscillators; Multiaccess communication; Noise figure; Phase locked loops; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Transmitters; Voltage control;
Conference_Titel :
Microwave Conference, 2000 Asia-Pacific
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6435-X
DOI :
10.1109/APMC.2000.926147
