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p1.Electromagnetic_wave

p1.Electromagnetic_wave - is 3x10 8(2.4x10 9 = 0.125 m...

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bxyics 1 Electromagnetic Wave 4050-403 Concepts of Wireless Data Networks Water Waves bxyics 2 Sound Waves bxyics 3
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bxyics 2 Electromagnetic Waves bxyics 4 EM Behaviors ± Gain ± Loss ± Reflection bxyics 5 ± Refraction ± Diffraction ± Scattering ± Absorption ± Multi-path Distortion ± Doppler Fading Wave ) 2 sin( ) ( ϕ π+ = ft A t v bxyics 6 ± A : amplitude or peak value ± f : frequency ± φ : phase ± T : period (1/ )
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bxyics 3 Wave length ± v = the speed of light 3x10 8 m/s ± f = 1/T λ vT bxyics 7 ± = vT ± Example: ± For 2.4GHz signal,
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Unformatted text preview: λ is 3x10 8 /(2.4x10 9 ) = 0.125 m Spectrums bxyics 8 bxyics 9 bxyics 4 Exercises ± The iNet wireless device mounted on our wireless carts generates 900 MHz electromagnetic wave. What are the bxyics 10 period and wave length? ± 802.11a wireless devices use frequencies starting at 5.15GHz. What are the period and wave length of the electromagnetic wave at this frequency?...
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p1.Electromagnetic_wave - is 3x10 8(2.4x10 9 = 0.125 m...

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