Abstract
The paper presents a new wideband switched beam patch antenna for the recent wireless applications. The proposed antenna is designed to cover the band from 1.22 GHz to 1.945 GHz with S-11 < -10 dB. The presented antenna has the ability to switch the beam into two different directions at the same resonant frequency. Two artificial switches (PIN diodes) are used in this antenna to make reconfigurability. The design has been achieved on Duroid substrate with a dielectric constant 2.2, thickness 1.57mm, and loss tangent 0.0009. The two PIN diodes (S-1 and S-2) are used to connect or disconnect the two circular patches. In ON-OFF state the antenna has a maximum beam direction of theta(max) - 215 degrees at phi - 80 degrees. In OFF-ON state the maximum beam direction switched to theta(max) = 145 degrees at phi = 80 degrees. The peak gains of the proposed antenna are 2.91 dBi for two cases. The characteristics of the proposed antenna have been investigated using IE3D simulator.