This work presents a state-of-the-art review of integrated circuits, systems and transceivers for wireless and mobile communications. The editor has commissioned contributions from researchers focusing on developments in key RF, IF, analogue, mixed-signal components and single-chip transceivers in CMOS technology, a preferred technology for system on chip design. Adopting a top-down approach from wireless communications systems, mobile terminals and transceivers, to constituent components, this volume covers the whole range of analogue, mixed-signal, baseband, IF and RF circuits in a systematic way. Important concepts such as low power, system on chip and re-configurability are also discussed.