The conductors of a coaxial transmission line are copper ( c = 5.8 10 7 S/m),
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The conductors of a coaxial transmission line are copper (σc = 5.8 × 107 S/m), and the dielectric is polyethylene (∈'r = 2.26, σ/ω∈' = 0.0002). If the inner radius of the outer conductor is 4 mm, find the radius of the inner conductor so that
(a) Z0 = 50 Ω;
(b) C = 100 pF/m;
(c) L = 0.2μH/m. A lossless line can be assumed.
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