In a circular waveguide the dominant mode is

Electronics and Communication Engineering (ECE) : Microwave Communication - Quiz(MCQ)

TEâ‚€â‚

TEâ‚â‚

TEâ‚‚â‚€

TEâ‚‚â‚

Correct Answer : Option (B) : TEâ‚â‚

Explanation :

Some applications require dual polarization capability. Circular waveguide has this capability.

These analysis uses cylindrical coordinates.

In circular waveguide TE₁₁ mode has the lowest cut off frequency and is the dominant mode.

If D is diameter of waveguide

λ_c = 1.706 D for TE₁₁ mode

λ_c = 1.029 D for TE₂₁ mode

λ_c = 0.82 D for TE₀₁ mode

λ_c = 1.306 D for TM₀₁ mode.

Recently Updated in Microwave Communication Questions

In a microwave resistor the wall thickness is made as small as possible to

minimize capacitive effect

reduce inductance

have low value of R

have high value of R

Correct Answer : minimize capacitive effect

In a klystron amplifier the transit time of electron passing the gap in the cavity should be

less than half cycle

less than one cycle

less than quarter cycle

more than quarter cycle

Correct Answer : less than quarter cycle

At a frequency equal to cutoff frequency in a rectangular wave guide

the flow of electromagnetic energy is zero

the flow of electromagnetic energy is infinite

the flow of electromagnetic energy is 10% of maximum

the flow of electromagnetic energy is 50% of maximum

Correct Answer : the flow of electromagnetic energy is infinite