Design of Compact Dual Reconfigurable Antenna for WiMAX/WLAN Applications

In this manuscript, a compact dual reconfigurable monopole antenna is proposed. It operates at various frequencies depending upon the condition of the six operating conditions. The designed antenna exhibits dual reconfigurability, that is, frequency as well as pattern reconfigurability. This is done to increase the robustness of the proposed design. There are six lumped circuits in which each circuit consisting of two resistors, two capacitors and one diode. The antenna operates on the following resonant frequencies: 1.7 GHz, 2.45 GHz, 3.5 GHz and 5.2 GHz falling inside the application, such as WLAN and Wi-MAX ranges. This antenna due to its dual reconfigurability can be utilized in many areas, such as cognitive radio systems, mobile phones, etc. The reconfigurable antenna performance is examined under different states of diodes on the basis of the antenna parameters, such as return loss, radiation pattern and gain. The designed antenna exhibits dual reconfigurability; that is, frequency as well as pattern reconfigurability. The performance of the reconfigurable antenna under different states of diodes are examined.