A new design of U shaped reconfigurable antenna based on PIN diodes

In this paper, we propose a novel reconfigurable patch antenna for wireless communication systems. The proposed reconfigurable antenna is based on PIN diodes associated to three U shaped resonators. The operating frequency of the proposed antenna can be tuned by changing the state of the PIN diode. In this work, we modelized the PIN diode using two different methods. This circuit is mounted on an FR-4 substrate with a thickness of 1.6mm, dielectric constant of 4.4 and tangent loss of 0.025. The simulation results are performed with CST-MW studio and verified by ADS.