Integral equation analysis of high-gain pyramidal horn antennas

The authors present a full-wave stepped-waveguide and hybrid field integral equation (HFIE) method which provides an effective solution for analytic modeling of high-gain pyramidal horn antennas. It is demonstrated that the analysis of high-gain pyramidal horn antennas can be accurately accomplished using the presented stepped-waveguide and HFIE method. The analysis performed by this method is far more accurate for the high-gain pyramidal horns than that of approximate methods. Furthermore, this method can be used to predict the voltage standing wave ratios, aperture field distributions, and cross-polarization patterns of the antenna.<>