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m. m. m. m. m. 8.2 Finite diameter wires. a. For observations along the center of the wire( ρ=0 ). b. By reciprocity, the configuration of (a) is analogous to that of (b). For simplicity, chose f =0 for the observations on the surface r= a.
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a. For observations along the center of the wire(ρ=0) b. By reciprocity, the configuration of (a) is analogous to that of (b)
For simplicity, chose f=0 for the observations on the surface r=a
(Pocklington’s integrodifferential equation)
l>>a, a<<λ (reduced from (eq. 3-15))
(Vi=a voltage applied at the input terminals of the wire) It was derived by solving the differential equation (3-15) or (8-25a) with the enforcement of the appropriate boundary conditions.
(simple but less accurate) (especially for impedance) (gap with must be smaller) (衣飾的皺邊)
Refer to L. L. Tsai, “A numerical solution for the near and far field of an annular ring of the magnetic current,“ IEEE Antenna nan propagation,”, Alo.AP-20, No.5, pp.569-576, Sept. 1972.
(quickly reach almost vanishing values) Using (8-32) to compute Ez, the corresponding induced voltages obtained by multiplying the value of –Ez at each segment by the length if the segment