Multiple controllable band Notch butterfly shaped Monopole UWB antenna for cognitive radio

Abstract

A Microstrip patch antenna having an exclusive shape of Butterfly is presented in this paper. Design of an ultra-wide-band (UWB) antenna with reconfigurable band notches are presented. For cognitive radio applications, reconfiguration of Butterfly Shaped band notch antenna is proposed. Butterfly shaped Monopole antenna having dimension 33 mm × 24 mm. The proposed antenna is composed of butterfly shape design with Microstrip fed with UWB performance. In addition, the notched band at 3.5 GHz and 5.6 GHz is identified by etching a pair of circular split ring on patch. Two split-ring resonators (SRR) having different radius are used to notch WIMAX and WLAN application to avoid interference. The proposed antenna design is simulated and results are observed.