Abstract

A method of improving the radiation characteristics of the patch antenna arrays using two different electromagnetic bandgap (EBG) structures is presented. The proposed antenna arrays are designed for low-loss, high-gain and low sidelobe levels (SLL) at far field applications. It is composed of a coaxial probe driven square patch operating at 4 GHz. Two mushroom EBG layers are introduced around the patch array. One is a mushroom while the other is using a planar EBG. By using these EBG structures, both gain and sidelobe levels are improved. All simulation results are demonstrated.

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