EM Wave characterestics notes-II

8/19/2019 EM Wave characterestics notes-II

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UNIT-V

EM Waves characteristics

Plane waves: Refraction & reflection

Normal and oblique incidences: for prefect conductors and perfect dielectrics

Brewster angle, critical angle and total internal reflection

Surface impedance, poynting vector & poynting theorem

Power loss in plane conductors, problems


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OBLIQUE INCEDANCE


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Surface impedance:


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Pointing vector and pointing theorem


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Complex Pointing Vector:


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Questions:


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Bits:

1. E . H of a Uniform plane wave is zero

2. Velocity of the wave in an ideal conductor is zero

3. If E=2V/m of a wave in free space ,(H) is

4. The velocity of EM wave in free space is independent of f

5. If E is a vector ,then zero

6. For a uniform plane wave propagating in z-direction E Z=0 and H Z=0

7. The velocity of propagation of EM wave is

8. The Intrinsic impedance of a medium is given by 40

9. Electric field just above a conductor is always normal to the surface

10. Intrinsic impedance of free space is

11. Dissipation factor, D f =

12. Phase constant in good conductors is

13. in good dielectric is =

14. Transmission coefficient =

15. Reflection coefficient =


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16. Snell’s law is given by

17. Unit of and are the same (yes/no )

18. The solution of uniform plane wave propagating in x direction is

E= f ( x-v

0t

)

19. Propagation constant is

20. Propagation constant is

21. Poynting vector P=E H

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EM Wave characterestics notes-II