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Electrical & Computer Engineering Electromagnetics Program David Atkinson & Jeffrey L. Young February 24, 2009 What is Electromagnetics? The study and application of electric and magnetic fields. Why Should I care? Electrical Engineering is Applied Electromagnetics - Circuit Theory - Kirchhoff ’s Voltage and Current Laws - Current - Voltage - Resistance - Capacitance - Inductance - Electric and Magnetic Energy - Wave and energy propagation and transmission Why Electromagnetics? Electrical Engineering is Applied Electromagnetics • As devices get smaller and smaller (relative to a wavelength), circuit theory is less able to adequately describe the performance, or be used to predict the operation of circuits. • At very high frequencies, transmission line and guided wave theory must be used - high speed electronics, micro/nano electronics, integrated circuits. • Other applications of Electromagnetics Fiber Optics Communication Systems, including microwave communications Antennas and wave propagation Optical Computing Electromagnetic Interference, Electromagnetic Compatibility Biology and Medicine/Medical Imaging Courses in Electromagnetics: X3X ECE 330: Electromagnetic Theory ECE 331: Electromagnetics Laboratory ECE 430: Microwave and Millimeter-Wave Circuits ECE 432: Propagation of Wireless Signals ECE 434: Antenna Principles and Design ECE 530: Advanced EM Theory ECE 531 Advanced Electromagnetic Theory II ECE 533: Antenna Theory ECE 536: Wave Propagation and Scattering (WSU) Classes in Electromagnetics ECE330 Electromagnetic Theory (3 cr) Vector Math, Charge and current, fields as forces, work, potential, and electromotive force, Faraday’s Law, Gauss’s and Ampere’s Law, Material Modeling, Waves. Prereq: Math 275, 310, and Phys 212. Coreq: ECE331 Semesters: Fall, Spring ECE331 Electromagnetics Laboratory (1 cr) Lab experiments and computer simulations. One 3-hr lab per week. Prereq: Math 275, 310, and Phys 212. Coreq: ECE330 Semesters: Fall, Spring Classes in Electromagnetics ECE430 Microwave Millimeter Wave Circuits (3 cr) Telegrapher’s and wave equations; characteristic impedance, wave velocity and wave number; physical transmission lines, including coax, microstrip and stripline; circuit analysis techniques, reflection coefficient and power flow, impedance analysis, impedance matching techniques and Smith Chart; S-parameters, Wilkinson power dividers, circulators and hybrid couplers; transformers and filters Prereq: ECE330, Offered every 3rd semester (next: Fall, 2010) ECE432 Propagation of Wireless Signals (3 cr) Maxwell’s equations; Poynting’s vector and Poynting’s Theorem; Wave equation with solutions (vector and scalar, homogeneous and inhomogeneous), Helmholtz equation; plane waves, reflection and refraction; introduction to classical electrodynamics, radiation from accelerated charges, introduction to antenna theory, transmission lines, guided waves Prereq: ECE330, Offered every 3rd semester (next: Spring, 2010) Classes in Electromagnetics ECE434 Antenna Principles and Design (3 cr) Maxwell’s equations, vector potential theory, radiation patterns, antenna efficiency and bandwidth, polarization, dipole and loop antennas, line sources, patch antennas, lineal arrays, antenna systems, radar equation. Prereq: ECE 330, Offered every 3rd semester (next: Spring, 2011) Questions? Classes in Electromagnetics ECE530 Advanced Electromagnetic Theory (3 cr) Maxwell’s equations, potential theory, wave propagation and scattering, canonical problems, guided wave theory, antenna concepts, boundary value problems. Prereq: ECE330, Offered every 3rd semester ECE531 Advanced Electromagnetic Theory II (3 cr) Boundary value problems in non-Cartesian systems, diffraction, perturbation techniques, variational techniques, wave transformations. Prereq: ECE330, Offered every 3rd semester ECE533 Antenna Theory (3 cr) Maxwell’s equations, reciprocity, equivalence theorems, wire antennas, antenna arrays, aperture antennas, analysis and design techniques, hardware considerations. Prereq: ECE330, Offered every 3rd semester Application Areas Microwave and Millimeter-Wave Circuits 1-100 GHz communication circuits and devices VLSI and mixed signal circuits Antenna Theory and Design Base station and mobile antennas for wireless communications (900 MHz – 2.0 GHz) Military and space phased arrays Bluetooth type embedded antennas Smart and agile antenna Wearable antennas Application Areas Electromagnetic Compatibility EMI/RFI Shielding and noise mitigation EM Propagation and Scattering Wireless communication links Radar cross-section analysis and mitigation EM induced biological hazards EM imaging and signature analysis Hyperthermia cancer treatment Why Electromagnetics? • As use of the electromagnetic frequency spectrum increases, the need for engineers with practical working knowledge in electromagnetics continues to grow. • Electromagnetic engineers design high frequency or optoelectronic circuits, antennas and transmission media; design electrical circuits that will function properly in the presence of external interference while not interfering with other equipment. • The electromagnetics technical specialty prepares future engineers for employment in industry in the areas of radar, antennas, fiber optics, high frequency circuits, electromagnetic compatibility and microwave communication.