Title :
Optimum quad band DCO in DS method for WCDMA transmitter in 90nm CMOS
Author :
Hosseini, Azar ; Gharaee, Hosseini
Author_Institution :
Shariati Univ.
Abstract :
We try to optimize the fully integrated phase path for a 3G polar transmitter in deep sub micron CMOS. It includes a single quad band digitally controlled oscillator (DCO)[1] providing modulation capability to handle the wide bandwidth of the WCDMA phase (frequency) data with using a nonlinearity cancellation technique, DS [3] compensator network and a switched inverter divider with interpolating up/down sampling. The complete chip, with integrated LDOs, power consumption of 20 mA at 2.5 V.
Keywords :
3G mobile communication; CMOS integrated circuits; broadband networks; code division multiple access; interpolation; radio transmitters; 3G polar transmitter; CMOS; WCDMA transmitter; compensator network; current 20 mA; derivative superposition method; digital controlled oscillator; integrated LDO; modulation capability; nonlinearity cancellation technique; optimum quad band DCO; size 90 nm; switched inverter divider; up-down sampling interpolation; voltage 2.5 V; Bandwidth; Digital control; Digital modulation; Frequency conversion; Inverters; Multiaccess communication; Oscillators; Phase modulation; Sampling methods; Transmitters; 3G; 90nm; Blackman window; DCO; DS; WCDMA; interpolating;
Conference_Titel :
Semiconductor Electronics, 2008. ICSE 2008. IEEE International Conference on
Conference_Location :
Johor Bahru
Print_ISBN :
978-1-4244-3873-0
Electronic_ISBN :
978-1-4244-2561-7
DOI :
10.1109/SMELEC.2008.4770274
