This book presents a wide range of topics dealing with Ultra Wideband. It provides an overview of circuit techniques for broadband applications, offering a comparative analysis of various broadband implementations for different parts of the transceiver such as amplifiers, oscillators, and filters. It also provides a historical perspective of the development of Ultra Wideband, starting with the earliest proposals to the FCC and describing the current state of the art, including the OFDM and pulse based approaches to Ultra Wideband. Coverage also implementation for the WiMedia/MBOFDM approach and implementation of the physical layer baseband, including the ADC and post-ADC processing required in the UWB system. Future advances such as multiantenna UWB solutions are also discussed.