A 4-cm-square waveguide is filled with a dielectric with complex permittivity c = 16 o (l
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A 4-cm-square waveguide is filled with a dielectric with complex permittivity εc = 16εo (l – j10–4) and is excited with the TM21 mode. If the waveguide operates at 10% above the cutoff frequency, calculate attenuation ad. How far can the wave travel down the guide before its magnitude is reduced by 20%?
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