Beamwidth control of sectional waveguide antennas using parabolic slotted surfaces

Abstract

This research is concerned with controlling the radiation pattern of a sectional cylindrical slotted waveguide antenna (SCSWA) in both horizontal and vertical planes to make the antenna more directive. In order to cover an area several SCSWAs are used, so the beam should be narrow in the horizontal plane to avoid interference. To control the beam in the vertical plane, the number, the width, and the position of slots could be varied. In this research, the focus is on controlling the radiation pattern in the horizontal plane by changing the concavity of the surface where the slots are placed. A series of simulations were performed on the proposed antenna at a desired frequency of 2.4 GHz, the results showed good control over the antenna's performance.