A WLAN Notched Wideband Monopole Antenna for Ultra Wideband Communication Applications

A compact ultra-wide band planar monopole antenna with double I shaped slots on the ground plane for notched band characteristics in the 5 GHz WLAN band are presented in this paper. The prototype of proposed antenna is designed on FR-4 dielectric material with a very small size as 0.35 lambda 0 x 0.3 lambda 0 x 0.0166 lambda 0 (lambda 0 is the wavelength at the lowest operating frequency of the antenna). The proposed antenna having a bandwidth of 42% in the range from 3 GHz to 4.5GHz, before the notch, and 79% from 6.4 GHz to 13 GHz after the notch. The proposed antenna obtained the good impedance matching in the pass band and good isolation for stop band; it also exhibits good antenna gain and efficiency. The proposed design is suitable for various communication purposes, Navigation purposes and Radar technology with a stop notch band at WLAN range.