Problem.Set.8

Problem.Set.8 - b) Find A ( r , t ) in the radiation limit....

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Problem Set 8. An antenna is constructed from conducting wire wrapped around an insulaing sphere with a current density given by J ( r , t )=[ ̂ I 0 a ( r a ) sin e i ot ] =[ J 0 ( r ) e i ot ] a) Set up the general expression for the vector and electrostatic potentials, A ( r , t ) , and ( r , t ) for this localized radiation source.
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Unformatted text preview: b) Find A ( r , t ) in the radiation limit. c) Find the magnetic induction, B ( r , t ) , and the electric field, E ( r , t ) , in the radiation limit. d) Find the averaged Poynting vector, S ( r ) ave , and the power radiated by the antenna....
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