A Compact Ultrawideband Slotted Patch Antenna for Wireless USB Dongle Application

A compact planar ultrawideband (UWB) antenna suitable for wireless universal serial bus (USB) dongle application is presented. By simply cutting notches and embedding types of slots into a rectangular patch, multiple resonances with effective bandwidth enhancement were achieved. A prototype of the proposed antenna was constructed and measured to show an ultrawide operating band with 10-dB return-loss bandwidth of about 10.42 GHz ranging from 2.86 to 13.38 GHz, which sufficiently covers the operating band, 3.1–10.6 GHz, of the new wireless personal area network (WPAN) using UWB technique. Also, monopole-like radiation patterns and larger than 3 dBi of peak antenna gain have been measured across the operating band. This design has an overall size of only 11
$\,\times \,$
15
$\,\times\,$
0.8 mm
$^{3}$
and is very suitable for use in an USB device.