Abstract
This paper represents the design of Electromagnetic Band gap (EBG) structure having fractal shape and its effect on antenna performance. The EBG structure is designed on substrate with dielectric constant 4.4 and thickness 1.6 mm. The proposed design is simulated using the high frequency structure simulator (HFSS). In our method, to overcome several limitations of patch antennas such as constrict bandwidth, low gain, excitation of surface waves, the EBG concept is applied. The aim of this paper is to design, simulate and fabricate the new EBG structure operating at 2.4GHz frequency and to study the performance of the rectangular microstrip antenna in terms of the bandwidth and VSWR with and without EBG structure which are characterized in terms of return loss and radiation pattern (1). Keywords—Microstrip, Electromagnetic Band Gap (EBG), Bandwidth, Surface wave attenuation.
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