Frequency Performance Analysis of a Linear Equidistant Slotted Waveguide Antenna Consisting of Subarrays

The analysis results of the directional properties of a linear slotted waveguide antenna with longitudinal slots in a broad wall of a rectangular waveguide are presented. In order to provide frequency-independent radiation pattern of the antenna subarraying was performed. Antenna's directivity is analyzed in Ansys HFSS. CAD modeling was automated by VBScript language script. Calculated radiation patterns in the H- plane in the operating frequency range are given.