Title :
A 60dB, 246MHz CMOS variable gain amplifier for subsampling GSM receivers
Author :
Mostafa, Mohamed A I ; Embabi, Sherif H K ; Elmala, Mostafa A I
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
This VGA is designed for a GSM subsampling receiver. It operates at an IF frequency of 246MHz. The VGA provides a 60dB digitally controlled gain range in 2dB steps. The VGA is implemented in a 0.35μm CMOS process. The current is 9mA@3V. The overall gain accuracy is less than 0.3dB. The noise figure at maximum gain is 8.7dB. The IIP3 is -4dBm at minimum gain
Keywords :
CMOS analogue integrated circuits; VHF amplifiers; cellular radio; integrated circuit noise; radio receivers; signal sampling; 0.35 micron; 246 MHz; 3 V; 60 dB; 8.7 dB; 9 mA; CMOS variable gain amplifier; IF frequency; IIP3; digitally controlled gain; noise figure; subsampling GSM receiver; CMOS process; Circuit noise; Dynamic range; GSM; Gain; Linearity; Noise figure; Noise measurement; Permission; Radio frequency;
Conference_Titel :
Low Power Electronics and Design, International Symposium on, 2001.
Conference_Location :
Huntington Beach, CA
Print_ISBN :
1-58113-371-5
DOI :
10.1109/LPE.2001.945386
