ECE 3105 Electromagnetic Fields | ECE | Virginia Tech

Undergraduate PROGRAMS

Course Information


Maxwell's equations and their application to engineering problems. 3105: transmission lines, electrostatics, magnetostatics. 3106A: time-varying fields, Maxwell's Equations, waves, propagation, guided waves, radiation.

Why take this course?

Electromagnetics provides the mathematical description of all electrical phenomena and therefore it is the physical foundation of all Electrical and Computer Engineering disciplines. Modern applications of electromagnetics are broad and include wireless communication systems, global navigation systems, bioelectrical phenomena, high speed computers and computer networks, as well as electrical, optical, and photonic devices. This course provides instruction in the fundamental engineering science and also the basics of modern applications.

Required for all EE majors; Technical elective for CPE majors


C- or better in Math 2224, Physics 2306 and 2004.

Proficiency in differential equations, vector calculus, electricity and magnetism, phasors, and basic circuit concepts is necessary. Consequently, students must have 2004, Math 2216, and Physics 2306 as prerequisites.

Major Measurable Learning Objectives

  • analyze and design transmission lines using wave and impedance concepts,
  • analyze and design transmission lines using Smith Charts,
  • calculate electrostatic fields and capacitance using the integral form of electrostatics,
  • calculate magnetostatic fields and inductance using the integral form of magnetostatics,
  • analyze steady currents and calculate resistance.

Course Topics


Percentage of Course

Transmission Lines (32%)
Voltage and current wave equations 5%
Transient analysis 5%
Steady state analysis 5%
Standing waves and power flow 7%
Quarter-wave impedance matching 3%
Smith Charts and applications 7%
Electrostatics (32%)
Review of vector algebra and calculus tools 5%
Gauss’ law and applications 5%
Coulomb’s law and applications 5%
Work, electrostatic potential and applications 5%
Electric field effects on materials 3%
Electric field boundary conditions 3%
Capacitance and stored energy 6%
Steady Currents and Resistance (6%)
Magnetostatics (30%)
Force, magnetic field strength and magnetic flux density 5%
Ampere’s law and applications 5%
Biot-Savart law and applications 5%
Magnetic field effects on materials 3%
Magnetic field boundary conditions and magnetic circuits 5%
Inductance and stored energy 7%