TABLE OF CONTENTS Over the last few years much has been published about the principles and applications of electromagnetic waves with large relative bandwidth, or nonsinusoidal waves for short. The next step is the development of the technology for the implementation of these applications. It is generally agreed that the antennas pose the most difficult technological problem...
Henning F. Harmuth, 1984
When Harmuth wrote these words in 1984, there was some justification for his conclusion that antennas were the most difficult aspect of implementing UWB technology [1]. Existing UWB antenna designs were obscure and forgotten. The work of earlier generations of investigators lay hidden like needles in haystacks, overlooked snippets lost in the vast expanse of dusty, decades-old journals stacked in dimly lit lonely aisles in the basements of technical libraries. There having been no significant interest in UWB technology, there was no comprehensive body of knowledge, no community of experience, no standard treatises and texts to capture preexisting work and serve as a stepping off point for further exploration. Innovators of necessity worked in a vacuum, struggling to reinvent antennas known to earlier generations.
Today, the surge of interest in UWB means that a community of experience is coming into being. A body of knowledge is rapidly coalescing in conference proceedings and journal articles. The aim of the present book has been to fill the UWB antenna information void with a reasonably comprehensive summary of the existing art and an overview of the technical tools needed to develop new...
