1. plane waves in a lossy material

2. x y z E H
Poynting’s theorm k x y z E k
Poynting’s theorm H

3. we cannot neglect the conduction current

8. Waves in metal

11. f=10 GHz

12. Reflection and transmission coefficients

13. Reflection and transmission of a pulse signal at an interface of two different dielectrics.

14. boundary conditions for time-varying fields
normal D differ by a surface charge density
tangential E is continuous
normal B is continuous
tangential H differ by a surface current density

15. E H E H
Why? E H

16. Etan is continuous E E
Htan is continuous X H E H H

17. Reflection coefficientX E H
Transmission coefficient

18. impedance
meter
conductor

19. Reflection of an electromagnetic pulse from a conducting surface.

20. Special cases
short
matched
open

21. two materials X E H

22. Reflection coefficient for wave from left
Transmission coefficient for wave from left

23. F 22
Special cases
matched

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25. “time of flight” = DT
EM dt intervals

26. “stealth bulldozer”

27. There is a new McDonald’s in Ames, Iowa on the Iowa State University campus