Abstract
This paper presents microstrip array antenna integrated with novel shapes of 2D-electromagnetic band-gap structure (2D- EBG). Three difierent shapes of 2D-EBG are used for harmonic suppression, optimizing the current distribution on the patches and decreasing the mutual coupling between array elements. As a result, the performance of the antenna array is improved. The three novel shapes of 2D-EBG presented are star, H shaped and I shaped slots. Simulated and measured results verify the improved performance of the array antenna compared to the array antenna without EBG as well as antenna array with conventional EBG shapes. The harmonic suppression and re∞ection coe-cients are improved by about 18dB. Minimum mutual coupling is less than i20dB, and the antenna size is reduced by 15% compared to the original size.
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