ECEN 5264 Lecture 04

ECEN 5264 Lecture 04 - ECEN 5264 Electromagnetic...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
ECEN 5264 lectromagnetic Absorption Scattering and Electromagnetic Absorption, Scattering, and Propagation ropagation Effects on Satellite Communications) (Propagation Effects on Satellite Communications) Professor Albin J. Gasiewski Lecture #4 – January 20, 2011 COT 246 ECOT 246 303-492-9688 (O) al.gasiewski@colorado.edu 1 Classes: ECCS 1B14 TR 9:30-10:45 AM University of Colorado at Boulder Spring 2011 ECEN 5264 EM Absorption, Scattering, & Propagation
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Administration • Reading: – EASP slides – EASP text (available on CULearn) () • HW 1 issued on CULearn today, due ebruary 8 February 8. 2 University of Colorado at Boulder Spring 2011 ECEN 5264 EM Absorption, Scattering, & Propagation
Background image of page 2
Last Lecture • Monochromatic plane waves in LHI media • Uniform & non-uniform plane waves •D i spersion spe s o • Transverse fields & characteristic pedance impedance • Polarization 3 University of Colorado at Boulder Spring 2011 ECEN 5264 EM Absorption, Scattering, & Propagation
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Today’s Lecture bsorption oefficient • Absorption coefficient • Plane waves in anisotropic media • Gaseous refractivity • Quantum theory of polarization • Schrödinger’s equation 4 University of Colorado at Boulder Spring 2011 ECEN 5264 EM Absorption, Scattering, & Propagation
Background image of page 4
Uniform Plane Wave Dispersion 5
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
UPW Solution Specification (cont'd) 1) Frequency ω 2) Propagation direction k ^ 3) Dispersion relation (material) k · k = ω 2 με Numerical values for both k' and k" 4) Polarization state A Total field description including ^ 6 e and h excepting amplitude and phase ^
Background image of page 6
Dispersion for Uniform Plane Waves (i.e., ) Let: After some manipulation: bove are general expressions valid for LHI media with no 7 Above are general expressions valid for LHI media with no nearby boundaries to initiate evanescence
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Maxwell's Algebraic Equations for UPWs 8
Background image of page 8
UPW Requirements in LHI Media haracteristic Characteristic Impedance Free Space 9 p
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
General Polarization of UPW 10
Background image of page 10
11
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
UPW Power Flux and Absorption Coefficient 12
Background image of page 12
UPW Poynting Vector + 0 Uses vector identity: 13
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 02/14/2011.

Page1 / 52

ECEN 5264 Lecture 04 - ECEN 5264 Electromagnetic...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online