A 24mm2 Quad-Band Single-Chip GSM Radio with Transmitter Calibration in 90nm Digital CMOS. - Robert Bogdan Staszewski; Dirk Leipold; Oren E. Eliezer; Mitch Entezari; Khurram Muhammad; Imran Bashir; Chih-Ming Hung; John L. Wallberg; Roman Staszewski; Patrick Cruise; Sameh Rezeq; Sudheer K. Vemulapalli; et al. (ISSCC, 2008)