Triband Planar Antenna with Enhanced Directivity for WiMAX and WLAN Application

This paper proposes the improved gain and performance parameters design of Microstrip Triband antenna employing dual edge resonators. The proposed design of antenna is 12 × 22 × 1 mm
³
composed of FR4 substrate of relative permittivity of 4.65. The compact design of the proposed antenna was achieved employing ACS feed along with LSER and ECER for two independent desired resonances at 3.5 and 2.4 GHz respectively in addition to beveled monopole resonating at 2.4 GHz. The paper demonstrates one of the key techniques to improve the gain of the antenna in a direction by employing director at an optimum distance of λ/6 from the radiator. The complete work has been accomplished on 3D full wave FEM based ANSYS simulator. The simulated and experimentally measured parameters reflects close agreement to each other. As a part of the study, the reference antenna [1] was implemented on ANSYS and fabricated to study the performance and characteristics of antenna for triband operation. An exhaustive optometric simulations has resulted in achieving the desired results. The proposed antenna application in addition to WLAN and WiMAX, paves the way for the applications demanding enhanced directivity such as devices with electromagnetic absorbers at relatively low cost.