ECE :: Electromagnetic Field Thoery
- Which of the following statement regarding waveguides is incorrect?
- A rectangular waveguide is a
- A Yagi antenna has a driven antenna
- In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as
- The frequency range for satellite communication is
- The skip distance is the maximum distance upto which ionospheric reflection is possible.
- Parabolic and lens antenna used at
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A.
At waveguide can be coupled to a coaxial cable |
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B.
At frequencies below the cut off value the wave progresses across the waveguide after total reflections |
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C.
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves |
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D.
Waveguides can handle large power at UHF and microwaves |