Volume 3, Issue 7 pp. 256-260
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A derivation of the vector addition theorem

W. C. Chew

W. C. Chew

Electromagnetics Laboratory Department of Electrical and Computer Engineering University of Illinois Urbana, Illinois 61801

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First published: July 1990
Citations: 11

Abstract

An alternative derivation of the vector addition theorem is presented using the completeness of vector wave functions and integration by parts. The advantage of this derivation is that it leads directly to the simplified results of Bruning and Lo and of Stein. Moreover, the dichotomous results of the addition theorem when a spherical Hankel function is involved can be derived by contour integration.

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