Title :
A digital-to-RF-amplitude converter for GSM/GPRS/EDGE in 90-nm digital CMOS
Author :
Cruise, Patrick ; Hung, Chih-Ming ; Staszewski, Robert Bogdan ; Eliezer, Oren ; Rezeq, Sameh ; Maggio, Ken ; Leipold, Dirk
Author_Institution :
Wireless Analog Technol. Center, Texas Instrum. Inc., Dallas, TX, USA
Abstract :
We present the first 90-nm digital CMOS RF power amplifier. This PA contains a large array of NMOS switches, and performs a direct digital-to-RF-amplitude conversion, filtering and buffering in a fully-integrated GSM/EDGE transmitter. Power control is fully digital. 40% efficiency is obtained at 10-dBm output power from 1.4 V and it occupies 0.005 mm2.
Keywords :
CMOS digital integrated circuits; UHF integrated circuits; UHF power amplifiers; buffer circuits; cellular radio; field effect transistor switches; filtering theory; integrated circuit design; packet radio networks; power control; radio transmitters; 0.8 to 1.0 GHz; 1.4 V; 1.6 to 2.0 GHz; 90 nm; EDGE; GPRS; GSM; NMOS switches; RF power amplifier; buffering; digital CMOS; direct digital-to-RF-amplitude conversion; filtering; fully-integrated transmitter; Digital filters; Filtering; GSM; Ground penetrating radar; MOS devices; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Switches; Transmitters;
Conference_Titel :
Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE
Print_ISBN :
0-7803-8983-2
DOI :
10.1109/RFIC.2005.1489176
