The effect of flange connectors on the radiation performance of narrow wall slotted waveguide antenna at X-band frequency

This paper demonstrated the radiation performance of the effect of connecting two narrow wall slotted waveguide antennas using flange connectors at X-Band Frequency. The antenna designs consist of 64 slot at WR90 waveguide, with UBR100 flange connector. The simulation results show that side lobe level is the most influenced performance by connection. The antenna without flange connector has a better side lobe level of 5.06 dB compared to the antenna using a flange connector. The antenna without flange connector has a better side lobe level of 2.15 dB compared with the connecting trimmed flanges.