A novel meandered-loop ultra-wideband antenna was proposed.The antenna was similar in configuration with a conventional wide-slot antenna

however

by employing meandered-loop structure

not only ultra-wideband performance but also compact size could be achieved.It had been investigated both numerically and experimentally for its input performance and radiation characteristics.It is observed that an operation bandwidth of over 4:1 has been achieved.Furthermore

relative stable and good omnidirectional radiation performance have also been achieved.Thus it can be determined as a useful candidate for UWB application.