Title :
E-plane analysis of a modified horn antenna with suppressed far-out sidelobe level
Author :
Odendaal, Johann W. ; Pistorius, Carl W I
Author_Institution :
Dept. of Electron. & Comput. Eng., Pretoria Univ., South Africa
fDate :
6/1/1992 12:00:00 AM
Abstract :
It is shown that the far-out sidelobes of a horn antenna can be suppressed by curving the edges in the aperture. A three-dimensional uniform geometrical theory of diffraction (UTD) analysis of the E -plane radiation pattern of the modified horn antenna was performed and compared with straight edges. This analysis indicates that the curvature of the edges does indeed influence the sidelobes to the effect that the modified horn antenna has significantly lower far-out sidelobes. The radiation patterns for modified horns were measured and compared with the calculated patterns and were found to be in good agreement
Keywords :
antenna radiation patterns; waveguide antennas; 3-D analysis; E-plane radiation pattern; UTD analysis; edge curvature effect; far-out sidelobes suppression; modified horn antenna; uniform geometrical theory of diffraction; Antenna measurements; Antenna radiation patterns; Antenna theory; Aperture antennas; Horn antennas; Inductors; Pattern analysis; Performance analysis; Physical theory of diffraction; Slot antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
