An evanescent mode occurs when (a) A wave is attenuated rather than propagated. (b) The propagation constant is purely imaginary. (c) m = 0 = n so that all field components vanish. (d) The wave frequency is the same as the cutoff frequency.
Chapter 12, Problem #2
An evanescent mode occurs when
(a) A wave is attenuated rather than propagated.
(b) The propagation constant is purely imaginary.
(c) m = 0 = n so that all field components vanish.
(d) The wave frequency is the same as the cutoff frequency.
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