Gain improvement of conical horn antennas by adding wire medium structure

This paper proposed a design of the wire medium structure for the conical horn antenna at the 10 GHz for radar applications. The main idea of this research is to the suitable wire medium structure and distance between apertures to such structure for gain improvement. We found that this proposed antenna with the wire medium structure provided the higher gain (20.9 dB) when compared to the gain of conventional horn (17.7 dB). Finally, the proposed antenna was fabricated and measured the results such as reflection coefficient (S11) and radiation pattern. We found that the simulated and measured results suggest that are in good agreement.