Single-feed slotted antenna for triband applications

In this paper, a tri band butterfly shaped Microstrip feed antenna for 3.852/5.773/8.341GHz application is presented here. The proposed microstrip-fed antenna forms operating frequencies by inserting one pair of slots on the ground plane with same lengths at a same distance from the center symmetrically. The size of the proposed antenna is 20×20 mm. The proposed antenna is simulated by ANSOFT designer var. 7 Software. In this antenna we use FR4 substrate with design specification dielectric constant (ε_r) of 4.4, thicknesses (h) of 1.6mm and its dielectric loss tangent is 0.02. Proposed antenna is useful for various wireless applications.