Title :
A caustic corrected UTD solution for a short monopole near a curved edge on a flat plate
Author :
Meloling, J.H. ; Marhefka, R.J.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
Corrections to the uniform geometrical theory of diffraction (UTD) that account for the caustics caused by the coalescence of the diffraction points are derived. This creates a new curvature dependent diffraction coefficient that has not been previously accounted for in the UTD. The far-zone radiation by a short monopole mounted on an elliptic disk is analyzed using this caustic corrected UTD solution. Theoretical results are verified in the principal plane by comparison with a method of moments solution. The resulting solution for the radiated field is accurate and fast to compute.<>
Keywords :
antenna radiation patterns; geometrical theory of diffraction; monopole antennas; caustic corrected UTD solution; curvature dependent diffraction coefficient; curved edge; diffraction points; elliptic disk; far-zone radiation; flat plate; method of moments solution; principal plane; radiated field; short monopole; uniform geometrical theory of diffraction; Frequency; Geometry; Laboratories; Moment methods; Optical diffraction; Physical optics; Physical theory of diffraction;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407680
