High gain directional antenna array for WiMAX application

Abstract

A 16×16 micro-strip antenna array with high gain characteristic was proposed for the 5.5 GHz WiMAX application. The T-junctions with a power ratio of 2:1 were used to design the feed network. To correct the stepped discontinuity of impedance change in common multi-section impedance transformer, exponential line matching transformers were adopted in the WiMAX frequency band. The reflection coefficient was lower than −15 dB from 5.08 GHz to 5.87 GHz. The measured gain of the antenna array achieved 29.8 dBi on E-plane at 5.8 GHz.

Keywords

antenna array / high gain / WiMAX

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