Abstract:

A novel compact wide-slot planar antenna and its extended design with band-notched function are proposed for ultra-wideband (UWB) applications. The antenna is fed by coplanar wave guide (CPW) with an elliptical tuning stub. A symmetric polygonal wide-slot configuration is used to obtain ultra-wideband characteristics. The characteristics of the proposed antenna are investigated both numerically and experimentally. Experimental results show that the impedance bandwidth of the antenna reaches up to 3.2~10.1 GHz for S₁₁≤-10 dB. In addition, by inserting W-shaped slots on the elliptical stub, band-notched function of the antenna is achieved for WLAN (5.150～5.825 GHz) applications.

Key words: band-notched, wide slot antenna, ultra-wideband antennas