Fundamentals of Applied Electromagnetics Richard W. Ziolkowski Department of Electrical and Computer Engineering The University of Arizona Thoughts borrowed from course presentation materials Fundamentals of Applied Electromagnetics Ulaby and Ravaioli 7th Ed Spring Semester 11 January, 2017 Maxwell’s Equations Time and Phasor Domain It is much easier to deal with exponentials in the phasor domain than sinusoidal relations in the time domain Just need to track magnitude/phase, knowing that everything is at frequency ω Maxwell’s Equations Sinusoidal time variations Materials: ε, µ - time independent, isotropic, homogenous, linear Static vs. Dynamic Static conditions: (a) charges are stationary or moving, but if moving, they do so at a constant velocity (b) size of system much smaller than a wavelength Under static conditions, electric and magnetic fields are independent, but under dynamic conditions, they become coupled. Types of Waves Plane Waves: fundamental solutions of Maxwell’s equations E TEM Wave H D.O.P. Guided EM Waves Unbounded EM Waves Types of Transmission Modes TEM (Transverse Electromagnetic) : Electric and magnetic fields are orthogonal to one another, and both are orthogonal to direction of propagation Examples of Antennas Dimensions and Units The EM Spectrum Examples of EM Applications Sci-Fi becomes reality – enabled by EM What is Next ????
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