If f is the frequency of electromagnetic wave, fc is cutoff frequency, then in a

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Question
If f is the frequency of electromagnetic wave, f_c is cutoff frequency, then in a rectangular waveguide
Options
A. attenuation is low when f > f_c
B. attenuation is low when f < f_c
C. attenuation is high when f < f_c
D. either (b) or (c)

Correct Answer

attenuation is low when f > f_c

Explanation

Wavelength should be less than cutoff wavelengths.

Therefore frequency should be higher than cutoff frequency for minimum attenuation.

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D. 1.05 x 10^-2

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