The following information pertains A circular waveguide of r

The following information pertains A circular waveguide of radius a = 2.54 cm is loaded with delta_r = 2.25, sigma =0. The dominate mode is TE10 TM01 TE11 TE101 ANS___________The cutoff frequency of the dominating mode is 2.307 GHz 3.014 GHz 14.76 GHz None of the above ANS____________What is the best approximation for the propagation constant, beta. of the dominant me operating frequency f- 6 GHz? 74.1 rad/m 6.28 m^-1 174.0 rad/m The dominate mode is cutoff, so the wave is evanescent. ANS__________In practice, the TM01 mode usually is the 1^st choice because: It is the dominate mode. It has lower conduction loss. Many countries adopted the convention. Its field pattern is very close that of the TEM mode in the coaxial cable.

Solution

In a circular or cylindrical waveguide

Ans C- TE₁₁ mode is dominant