List of top Electronics and Communication Engineering Questions on Waveguides and Guided Waves

The dominant mode in a rectangular waveguide is
Mean effective aperture of a \(\lambda/2\) dipole is
The standard reference antenna for the directive gain is the
Long distance short wave radio broadcasting uses
Which of the following is a travelling wave?
A Reflex Klystron oscillator uses
Wire guide may be considered as
Consider an air filled rectangular waveguide with a cross section of 5cm x 3cm. For this waveguide, the cut off frequency (in MHz) of \(TE_{21}\) mode is
A standard air-filled rectangular waveguide with dimensions \( a = 8 \, \text{cm}, b = 4 \, \text{cm} \), operates at 3.4 GHz. For the dominant mode of wave propagation, the phase velocity of the signal is \( v_p \). The value (rounded off to two decimal places) of \( v_p / c \), where \( c \) denotes the velocity of light, is