Study of a Printed Small Size Trisul Shape UWB Antenna for Indoor Communication
An Ultra-WideBand (UWB) antenna with a narrow frequency notch is presented. The antenna has been fabricated on a FR4 substrate and occupies an area of only 25x25 mmxmm. Starting from a circular planar patch exhibiting a VSWR smaller than 2.5 in the 3.5-10GHz band, a frequency notch at 5.65GHz is introduced by two open slots above the coplanar waveguide feeding. The measured return loss shows a good agreement with the simulation results and proves that this kind of antenna is suitable for reducing the detrimental interference effects of WLAN, operating around 5.5GHz, on UWB radio link for indoor communication.