Electrical & Computer Engineering Electromagnetics Program David Atkinson & Jeffrey L. Young February 24, 2009.

Electrical & Computer Engineering

Electromagnetics Program

David Atkinson &Jeffrey L. Young

February 24, 2009

What is Electromagnetics?

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

The study and application of electric and magnetic fields.

Why Should I care?

Why 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 OpticsCommunication Systems, including microwave communicationsAntennas and wave propagationOptical ComputingElectromagnetic Interference, Electromagnetic CompatibilityBiology and Medicine/Medical Imaging

Electrical Engineering is Applied Electromagnetics

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: ECE331Semesters: 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: ECE330Semesters: 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’svector 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, potentialtheory, 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.