Title :
A WCDMA Transmitter in 0.13μm CMOS Using Direct-Digital RF Modulator
Author :
Eloranta, Petri ; Seppinen, Pauli ; Kallioinen, Sami ; Saarela, Tuomas ; Parssinen, Aarno
Author_Institution :
Nokia, Helsinki
Abstract :
A WCDMA transmitter based on direct-digital RF modulator has a power control range of >90dB and achieves an ACPR of -58dBc with a channel power of -2dBm. Using an external PA with a power gain of 27dB, the measured EVM is <2% with signal levels from -35 to +25dBm. The chip is fabricated in a 0.13μm 1.2V CMOS process and occupies 4mm2.
Keywords :
CMOS integrated circuits; code division multiple access; modulators; radio transmitters; 0.13 micron; 1.2 V; 27 dB; CMOS process; WCDMA transmitter; direct-digital RF modulator; external power amplifier; Clocks; Digital filters; Digital modulation; Finite impulse response filter; Low pass filters; Multiaccess communication; Power control; Power measurement; Radio frequency; Transmitters;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0852-0
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373433
