MICROSTRIP PATCH ANTENNA ARRAY WITH GAIN ENHANCEMENT FOR WLAN APPLICATIONS
Publication Date : 01/08/2017
A microstrip patch antenna array with gain enhancement is proposed. A single patch antenna is gain limited with low data rate for WLAN applications. High gain antennas are required to increase upload/download data rate for WLAN applications. An n x n patch antennas are combined in a corporate array network for gain enhancement. Therefore, 1x2, 1x4, 2x2 and 2x4 antenna arrays were studied and investigated. The antennas transmission networks are designed using quarter wave transformers and are probe fed. The overall size of the main radiating element is 0.25λo x 0.30λo (30.2 mm x 37 mm) at 2.44 GHz. Simulated results shows a gain enhancement of 7dB from a single patch to 2x4 array patch antenna. Also a narrow beam-width is obtained at 3dB which improves from 90.9 degree for a single patch to 56 degrees for a 2x4 array patch. The simulated antenna performances in terms of reflection coefficients, gains, surface current distributions and the radiation patterns are presented and discussed. The reflection coefficient and the gains obtained show that the antenna has potential applications for WLAN (2.39-2.45 GHz) operations.
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