Exact Derivation of R - Exact Derivation of R z' R r...

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1 Exact Derivation of R Hence Binomial expansion: z' θ z'cos θ z' θ Dipole Far-field region z‘=0 z‘=0 R r () () θ cos let Now 2 2 2 2 2 2 2 2 2 2 2 2 r z z y x r z z z z y x z z y x R = + + = + + + + = + + = ( ) () 2 / 1 2 2 2 2 cos 2 1 1 cos 2 + + = + + = z z r r r z z r r R () () L + + + = = + = 2 0 1 2 1 1 1 x p p px x k p x k p k p
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2 Putting We have Retaining the first two terms: The lager the
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Exact Derivation of R - Exact Derivation of R z' R r...

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