Antenna and Wave propagation Important questions
Antenna and Wave propagation Important questions EC6602 Regulation 2013 Anna University free download. EC6602 Important questions free pdf download.
Sample Antenna and Wave propagation Important questions:
1.Define Sky wave.
Waves that arrive at the receiver after reflection in the ionosphere is called sky wave.
2.Define Tropospheric wave.
Waves that arrive at the receiver after reflection from the troposphere region is called
Tropospheric wave.(ie 10 Km from Earth surface).
3.Define Ground wave.
Waves propagated over other paths near the earth surface is called ground wave propagation.
4.What are the type of Ground wave.
Ground wave classified into two types.
i. Space wave
ii. Surface wave.
5. What is meant by Space Wave?
It is made up of direct wave and ground reflected wave. Also includes the portion of energy received as a result of diffraction around the earth surface and the reflection from the upper
atmosphere.
6. What is meant by Surface Wave?
Wave that is guided along the earth‘ s surface like an EM wave is guided by a
transmission is called surface wave. Attenuation of this wave is directly affected by the
constant of earth along which it travels.
7. What is meant by fading?
Variation of signal strength occur on line of sight paths as a result of the atmospheric
conditions and it is called .It can not be predicted properly.
8. What are the type of fading?
Two types. i. Inverse bending.
ii. Multi path fading.
9. What is inverse and multi path fading?
Inverse bending may transform line of sight path into an obstructed one. Multi path fading is caused by interference between the direct and ground reflected waves as well as interference between two are more paths in the atmosphere.
| Subject Name | Antenna and Wave propagation |
| Subject code | EC6602 |
| Regulation | 2013 |
EC6602 Important questions Click here to download
Antenna and Wave propagation Notes