Recent Trends in Printed Ultra-Wideband (UWB) Antennas

After the Federal Communication Commission (FCC)’s authorization of frequency band of 3.1 to 10.6 GHz for unlicensed radio applications, ultra-wideband (UWB) technology be‐ come the most promising candidate for a wide range of applications that will provide signif‐ icant benefits for public safety, business and consumers, and attracted a lot attention both in industry and academia. The antennas are the key components of UWB system. In wireless communication system, an antenna can take various forms to fulfill the particular require‐ ment. As a result, an antenna may be a piece of conducting wire, an aperture, a patch, a re‐ flector, a lens, an assembly of elements (arrays). A good design of the antenna can fulfill the system requirements and improve overall system performance.