"This book is concerned with recent advances in the use of nonlinear vector network analyzers (NVNAs) for the characterization, modeling, design, and linearization of nonlinear RF devices and circuits. Wireless has experienced an incredible growth; from cellular phones to wireless local area networks (WLANs), portable radios have become ubiquitous. The trend is to develop RF radios with wider bandwidth and low power dissipation for supporting new broadband services. Of particular importance are the nonlinear RF front-end circuits in radios, which typically dissipate half the handheld power"-- Preface.