Antennas Practice Test 1

1. If directivity of antenna increases, then the coverage area _____

2. What is the effective aperture of a Half-wave dipole operating at 100MHz?

3. Effective aperture is the ability of antenna to extract energy from the electromagnetic wave.

4. What is the maximum power gain of antenna with radiation efficiency 98% and directive gain 1?

5. The angular distance between two successive nulls of main lobe is called as ______

6. Directive gain of antenna when radiation intensity is 5W/Steradian and radiated power 5W is ____

7. Which pattern represents a plot with magnitude of field strength Vs θ at a constant φ?

8. Fresnel zone is also called as ____

9. The portion of the near field immediate to the surrounding the antenna is called as _____

10. The radiation lobe containing the direction of maximum radiation is called as _____