Abstract

In this paper, we propose a new bidirectional stacked microstrip dipole antenna with a multilayered disk array structure (MDAS) for a high gain WLAN application. In the proposed structure, two identical MDAS are attached on the both sides of a dipole exciter which is composed of two linearly polarized stacked microstrip patches placed back to back and fed with balanced input power using unbalanced-to-balanced (balun) transformer. The proposed antenna structure where MDAS has overall height of 1λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> was designed and fabricated to operate at 2.44GHz. The maximum gain of the antenna was found to be 10.29dBi with highly symmetric bidirectional beam pattern in both E- and H-plane.

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