Two rectangular waveguides are joined end-to-end. The guides have identical dimensions, where a = 2b. One guide
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Two rectangular waveguides are joined end-to-end. The guides have identical dimensions, where a = 2b. One guide is air-filled; the other is filled with a lossless dielectric characterized by ∈'r.
(a) Determine the maximum allowable value of r such that single-mode operation can be simultaneously assured in both guides at some frequency.
(b) Write an expression for the frequency range over which single-mode operation will occur in both guides; your answer should be in terms of ∈'r, guide dimensions as needed, and other known constants.
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a Since a 2b the cutoff frequency for any mode in either guide is wri...View the full answer
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