Özet:

In this study, gain of an ultra-wideband CPW antenna working in 3.1-10.6 GHz frequency range is enhanced using metallic plates attached to its surface edges and patch part in a certain distance. The designed antenna is performed numerically with CST Microwave Studio 3D program. The return loss (S11), gain and radiation patterns of the antenna are obtained to evaluate antenna performances. Thereby, the simulation results for the antenna and the antenna having metallic plates are compared. From the simulation results, it was observed that metallic plates did not change the radiation angle of the antenna but enhanced antenna gain especially at the lower frequency range (3.1-6 GHz). Metallic plates increased the gain of the antenna approximately 2-2.5 dB in its lower frequency range extending from 3.1 GHz to 6 GHz.

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