The proposed antenna can efficiently be used in C band applications like in satellite communication, WiMAX, WLAN, Wi-Fi, WiMAX and so on for transmitting and receiving signals and information over the long distances by dissipating less amount of power.ฤก. Maximum negative return loss of -57.32 was obtained for Preperm L500 dielectric material. It was seen that among the four dielectric materials, the substrate with the low dielectric constant has the highest directivity with a wide beam radiation pattern while FR 4 has the least gain. Four Substrate materials like Arlon AD 350A with dielectric constant of 3.5, FR-4 with dielectric constant of 4.3, Preperm L500 with dielectric constant of 5 and Lead glass with dielectric constant of 6 were taken to investigate their effects on the performance by simulating the antenna at 5GHZ. The design frequency and the thickness of the substrates were kept constant while different substrate materials were used and the notch width was varied to obtain the maximum performance. This paper demonstrates the effect of using different dielectric substrates on the performance of an inset fed circular patch microstrip antenna with the variation of notch width for 5 GHz wireless communications.
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