Repeat Problem 14.17, but with a full-wave antenna (2 = ). Numerical integrals may be necessary. Consider
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Repeat Problem 14.17, but with a full-wave antenna (2ℓ = λ). Numerical integrals may be necessary.
Consider a lossless half-wave dipole in free space, with radiation resistance, Rrad = 73 ohms, and maximum directivity Dmax = 1.64. If the antenna carries a 1-A current amplitude,
(a) How much total power (in watts) is radiated?
(b) How much power is intercepted by a 1-m2 aperture situated at distance r = 1 km away? The aperture is on the equatorial plane and squarely faces the antenna. Assume uniform power density over the aperture.
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In this case k and the radiation resistance is found by applying Eq 65 where the answer was ...View the full answer
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