Discussion :: Microwave Communication
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If f is the frequency of electromagnetic wave, fc is cutoff frequency, then in a rectangular waveguide
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A.
attenuation is low when f > fc
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B.
attenuation is low when f < fc
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C.
attenuation is high when f < fc
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D.
either (b) or (c)
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Answer : Option A
Explanation :
Wavelength should be less than cutoff wavelengths.
Therefore frequency should be higher than cutoff frequency for minimum attenuation.
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