A Σ-Δ fractional-N frequency synthesizer using a wide-band integrated VCO and a fast AFC technique for GSM/GPRS/WCDMA applications.
Han-il LeeJe-Kwang ChoKun-Seok LeeIn-Chul HwangTae-Won AhnKyung-Suc NahByeong-Ha ParkPublished in: IEEE J. Solid State Circuits (2004)