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8.2 Finite diameter wires

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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8.2 Finite diameter wires

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  1. m m

  2. m m m

  3. 8.2 Finite diameter wires

  4. a. For observations along the center of the wire(ρ=0) b. By reciprocity, the configuration of (a) is analogous to that of (b)

  5. For simplicity, chose f=0 for the observations on the surface r=a

  6. (Pocklington’s integrodifferential equation)

  7. Fig.8.6 (a)

  8. l>>a, a<<λ (reduced from (eq. 3-15))

  9. (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.

  10. (simple but less accurate) (especially for impedance) (gap with must be smaller) (衣飾的皺邊)

  11. Δ

  12. 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.

  13. (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

  14. 8.3 Moment method solution

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