In wireless communication system especially in mobile communication it becomes a challenge to reduce antenna size with the enhancement of antenna performance. One of the techniques to improve antenna performance and reduce antenna size by using an artificial magnetic conductor (AMC) ground plane. Gain enhancement of microstrip patch antenna preferring artificial magnetic conductor (AMC) structure is presented. The proposed AMC is of hexagonal shape 3x3 unit cell loaded square patch on a ground substrate. The high gain characteristics is achieved using circular patch antenna with AMC hexagonal unit cell technique. The antenna with dimension 82.0 mm Ã— 94.0 mm Ã— 1.6 mm has been designed on FR4 substrate having dielectric constant 4.4 and thickness h=1.53 mm. The proposed antenna exhibits 30MHz bandwidth from 2.42-2.45GHz and has a compact size, high gain characteristics, good radiation characteristics and 6.4dB directivity. Performance characteristics of this antenna i.e. radiation pattern, return loss, VSWR and gain are simulated using the HFSS software. The AMC Hexagonal unit patch antenna is compact, low profile and offers very high gain required for long way Communication.
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