Title :
Analog Path for Triple Band WCDMA Polar Modulated Transmitter in 90nm CMOS
Author :
Akhtar, Siraj ; Litmanen, Petteri ; Ipek, Mehmet ; Lin, Jerry ; Pennisi, Salvatore ; Huang, Feng-Jung ; Staszewski, Robert Bogdan
Author_Institution :
Texas Instrum. Inc., Dallas
Abstract :
We present a fully integrated analog path for a 3 G polar transmitter in 90 nm CMOS. It includes a quad band Digitally Controlled Oscillator providing modulation for the phase data and a single stage Digital Pre-Power Amplifier that combines the phase and amplitude signals while providing the dynamic range for WCDMA. The chip, with integrated LDOs, consumes 60 mA from a 1.4 V supply while providing 11 dBm CW power at 1950 MHz, 87 dB dynamic range without any calibration, and PN of -157 dBc/Hz at 40 MHz.
Keywords :
3G mobile communication; CMOS digital integrated circuits; code division multiple access; radio transmitters; radiofrequency oscillators; 3G polar transmitter; CMOS; amplitude signals; current 60 mA; digitally controlled oscillator; integrated analog path; phase signals; size 90 nm; triple band WCDMA polar modulated transmitter; voltage 1.4 V; Amplitude modulation; Digital control; Digital modulation; Dynamic range; Frequency; Multiaccess communication; Oscillators; Phase modulation; Power generation; Transmitters; 3G; 90nm; DCO; DPPA; WCDMA; high dynamic range; polar transmitter;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0530-0
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2007.380861
