Model validation for sectoral horn antennas in metal enclosures

The paper describes the enclosure model and show that performance is sensitive to the radome and back wall position for a given cavity size. For the isolated horns the initial radome position is established by using a fixture to allow accurate positioning of the radome in front of the horn and select the position that minimizes the measured VSWR at the desired frequency, constructed a mockup of the horn enclosure for model validation. It presents the measured results, compared to the Feko model for the isolated horns and also the enclosed horns with radome.