Title :
A GSM/EDGE/WCDMA modulator with on-chip D/A converter for base station
Author :
Vankka, J. ; Ketola, J. ; Vaananen, O. ; Sommarek, J. ; Kosunen, M. ; Halonen, K.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
A modulator with a 14 b on-chip D/A converter occupies 22.09 mm/sup 2/ in 0.35 μm CMOS technology and dissipates 1.7 W at 3.3 V with a 110 MHz clock. A digital programmable up/down unit enables power ramping on a time-slot basis. The modulator fulfils the spectrum, phase and EVM specifications of GSM, EDGE and WCDMA.
Keywords :
CMOS integrated circuits; cellular radio; code division multiple access; digital-analogue conversion; mixed analogue-digital integrated circuits; modulators; 0.35 micron; 1.7 W; 110 MHz; 3.3 V; 3G base station modulator; CMOS technology; EDGE signal; EVM specifications; GSM system; GSM/EDGE/WCDMA modulator; WCDMA mode; digital programmable up/down unit; on-chip D/A converter; onchip DAC; power ramping; wideband CDMA; Bandwidth; Base stations; Circuits; Filters; Frequency; GSM; Modulation; Multiaccess communication; Oscillators; Telecommunication standards;
Conference_Titel :
Solid-State Circuits Conference, 2002. Digest of Technical Papers. ISSCC. 2002 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-7335-9
DOI :
10.1109/ISSCC.2002.993023
