A new topology of top-cross-loop for low-profile monopole UWB antenna

Federal Communication Commission (FCC) allocated 3.1 GHz to 10.6GHz to short range (<10m) communication with acceptable EIRP in the beginning of this century. This adoption for radio reusability revived the research in Ultra Wideband (UWB) communication which dates back to the first commercial electromagnetic data communications more than 100 years ago by Marconi. UWB communication systems possess advantages of robustness against multipath and jamming, and potential high data rate capability (typically 100Mbps) over short range. These characteristics among others make UWB systems promising solutions for indoor navigations, intrusion detections and communications in entertainment, sports, medical and defense areas.