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electronics and communication engineering microwave communication
1. If f is the frequency of electromagnetic wave, fc is cutoff frequency, then in a rectangular waveguide
(A): attenuation is high when f < fc
(B): attenuation is low when f > fc
(C): attenuation is low when f < fc
(D): either (b) or (c)
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Comments
By: guest on 02 Jun 2017 01.04 am
Wavelength should be less than cutoff wavelengths. Therefore frequency should be higher than cutoff frequency for minimum attenuation.
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