A Fully Digital 65nm CMOS Transmitter for the 2.4-to-2.7GHz WiFi/WiMAX Bands using 5.4GHz ΔΣ RF DACs. - Andras Pozsgay; Tommy Zounes; Razak Hossain; Mounir Boulemnakher; Vincent Knopik; Sébastien Grange (ISSCC, 2008)