Modern System-on-Chip designs are increasingly mixed-signal designs that require efficient systematic design methodologies and supporting computer-aided design (CAD) tools to manage the design complexity in the available design time, that is ever decreasing due to tightening time-to-market constraints. The purpose of Low-Power Design Techniques and CAD Tools for Analog and RF Integrated Circuits is to provide an overview of very recent research results that have been achieved as part of the Low-Power Initiative of the European Union, in the field of analog, RF and mixed-signal design methodologies and CAD tools. It is a representative sampling of the current state of the art in this area, with special focus on low-power design methodologies and tools for analog and RF circuits and architectures. Concrete designs, mainly for telecommunication applications, such as low-noise amplifiers, oscillators, filters, but also complete transceiver front-ends, are discussed and analyzed in a methodological way, and their modeling and simulation, both at the circuit level and at the architectural level, are treated. In this way, the eleven contributions of this book combine in a unique way designs with methodologies and CAD that will be interesting to designers and CAD developers, both in industry and academia.