You are given four slabs of lossless dielectric, all with the same intrinsic impedance, , known to
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You are given four slabs of lossless dielectric, all with the same intrinsic impedance, η, known to be different from that of free space. The thickness of each slab is λ/4, where λ is the wavelength as measured in the slab material. The slabs are to be positioned parallel to one another, and the combination lies in the path of a uniform plane wave, normally incident. The slabs are to be arranged such that the air-spaces between them are either zero, one-quarter wavelength, or one-half wavelength in thickness. Specify an arrangement of slabs and air-spaces such that
(a) The wave is totally transmitted through the stack,
(b) The stack presents the highest reflectivity to the incident wave. Several answers may exist.
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a In this case we look for a combination of halfwave sections Let the interslab distances be d 1 ...View the full answer
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