Plane_Wave_Propagation - 71 (and Ch. 6) Lecture 27 Band HF...

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7 1 (and Ch. 6) Lecture 27
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Band Frequency Wavelength HF 3-30 MHz 100 - 10 m VHF 30 - 300 MHz 10 - 1 m UHF 300 - 1000 MHz 1 - 0.3 m L 1 - 2 GHz 30 - 15 cm S 2 - 4 GHz 15 - 8 cm - GHz - cm C 4 8 GHz 8 4 cm X 8 - 12 GHz 4 - 2.5 cm K u 12 - 18 GHz 2.5 - 1.7 cm K 18 - 27 GHz 1.7 - 1.2 cm K a 27 - 40 GHz 1.2 - 0.75 cm mm 40 - 300 GHz 7.5 - 1 mm T-waves IR 15 - 430 THz 0.7 – 20 μ m visible 430 – 750 THz 400-700 nm UV 750 – 1500 THz 200 – 400 nm
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hasors (like in 210 and in T es!) Phasors… (like in 210 and in T lines!) Maxwell in Phasor land
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The whole idea of is a paramaratization It only holds true when there are an enormous number of molecules making up a media. 0 R ε ε = ε If the material allows flow of charge (i.e. it’s conductive) then Ohm’s law says: r r r r r r To include this, expand our definition of complex permittivity: E c ωε ω σ j D j J H x E J = + = = - 0 R C ε j = Maxwell in (free charge free) Phasor land
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http://www.falstad.com/ripple/ ote: these are scalar examples !! Note: these are scalar examples !!
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7 2 Lecture 28
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Special Case : Uniform Plane Wave (UPW) () [ ] x kz - t cos E t z y x E 0 ˆ , , , ω = r
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Point of constant phase…. ( ) [ ] x
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This note was uploaded on 03/30/2008 for the course EE 330 taught by Professor Tofighimohammad- during the Spring '08 term at Pennsylvania State University, University Park.

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Plane_Wave_Propagation - 71 (and Ch. 6) Lecture 27 Band HF...

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