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Implementation of the Jacobi-bessel series method for radiation-pattern equations of an offset parabolic reflector antenna using MathCAD®

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2 Author(s)
Volakis, J.L. ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; Davidson, D.B.

The Physical Optics radiation integral expressed is implemented in terms of a summation of Fourier transforms in MathCAD. The Jacobi-Bessel series has been used to evaluate the Fourier transforms. The mathematical formulation given provides a fast and accurate approach for the prediction of the far-field radiation pattern of offset-reflector antennas. The accurate and rapid numerical evaluation of the expressions obtained is demonstrated through the design of a multi-feed offset reflector. Furthermore, the formulation can be slightly modified and implemented in MathCAD for axially symmetric reflectors and other types of aperture antennas, as well.

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:47 ,  Issue: 3 )