+ Wave equation for lossy media in phasor form (pp. 287-295): where and is the complex permittivity with the imaginary part involving conductivity that denotes Ohmic loss. ,
i.e. attenuation coefficient ( )
and phase factor (rad/m).
Note -- is equal to 8.69 dB/m (p.289 footnote).

+ Plane wave in lossy media: e.g.
( , )
time varying form
Note -- equiv. to in lossless medium .
- In terms of phasors, it is best to use exponential form. Consistently, convert all imaginary terms inside the argument of the exponent to radian (avoid degrees), e.g. .
- For conversion into time varying form, group all the phases (exponent with j) into one group and group all the real amplitudes into another group.
- To identify a plane wave, group all (real and imaginary) exponents with spatial dependency into one group as propagation factor (e.g. ) and remaining terms make up the complex amplitude.

+ TEM wave in lossy media (Sect. 7.3):
& are valid but wave impedance is complex.
Example 2.4: Plane wave in lossy medium
Example 2.5: Maxwell's eqn method applied to a standing wave
Example 2.6: Plane wave method applied to a standing wave

+ Determine of material properties:
insulator or good dielectric
good conductor
Otherwise, semi-conductor or lossy dielectric.
Flow chart in determining wave parameters
Recall . Generally,
where accounts for conductor and dielectric losses.
Loss tangent .
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HW #9	Due 3/1/07