Title :
GaAs RFICs for CDMA/AMPS dual-band wireless transmitters
Author :
Aparin, V. ; Gard, K. ; Klemens, G. ; Persico, C.
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
Abstract :
An upconverter and two driver amplifiers for CDMA/AMPS cellular/PCS wireless transmitters are presented. The upconverter has two selectable RF outputs operating over 800 to 1900 MHz frequency range. They can be assigned to different frequency bands providing a dual-band operation. The driver amplifiers offer two gain modes selected with a control voltage. The cellular driver amplifier provides DC power savings in the low gain mode. The chip set was fabricated using a GaAs 0.6 /spl mu/m E/D MESFET process.
Keywords :
III-V semiconductors; MESFET integrated circuits; MMIC amplifiers; MMIC frequency convertors; MMIC mixers; UHF amplifiers; UHF frequency convertors; UHF integrated circuits; UHF mixers; cellular radio; code division multiple access; gallium arsenide; personal communication networks; radio transmitters; 0.6 micron; 800 to 1900 MHz; CDMA/AMPS wireless transmitters; GaAs; GaAs MESFET process; GaAs RFICs; GaAs chip set; PCS wireless transmitter; cellular wireless transmitter; driver amplifiers; dual-band operation; gain mode selection; upconverter; Driver circuits; Dual band; Gallium arsenide; Multiaccess communication; Personal communication networks; Radio frequency; Radiofrequency amplifiers; Radiofrequency integrated circuits; Transmitters; Voltage control;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 1998 IEEE
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4439-1
DOI :
10.1109/RFIC.1998.682091
