電磁學(英文班)

Electromagnetic theory is the study of electric and magnetic fields and signals in space and time. It is fundamental to the applications of wireless communications, microwave engineering, opto-electronics, high speed circuit design, etc.. In the first semester of electromagnetic theory, static electrostatic and magnetic fields in space are discussed. The concept of "fields" (spatial distribution of physical quantities) and important mathematic tools are emphasized. Part I Introduction and vector analysis (~ 4 weeks, Ch. 1, 2) Part II Electrostatics (~ 7 weeks, Ch. 3, 4, 5) Part III Magnetostatics (~ 5 weeks, Ch. 6) The syllabus of this "Electromagnetics I" course comprises vector analysis, electrostatics, steady electric currents, and magnetostatics. Within vector analysis, the three main coordinate systems (Cartesian, cylindrical, and spherical) along with their differential and integral calculus are introduced. Important vector operations such as the divergence, curl and gradient are also introduced, for all three coordinate systems. Theorems such as the divergence and Stoke's theorem, as well as useful vector identities, are also taught. Under the large umbrella of electrostatics, Coulomb's law, Gauss' law, definition of the electric field, scalar electric potential, boundary conditions on the electric field at media interfaces, dielectric permittivity, polarization, electric dipole moment, capacitance/capacitors, electrostatic energy and forces, Poisson's and Laplace equations, and boundary value problems are all covered. In the branch of steady electric currents, topics covered comprise Ohm's law, electromotive force, Kirchoff's voltage and current laws, continuity equation, power dissipation and Joule's law, and boundary conditions for the electric current density. Within the large chapter of magnetostatics, topics taught include Ampere’s law, definition of the magnetic flux density, vector magnetic potential, Biot-Savart law, magnetic dipole, scalar magnetic potential, magnetization and its equivalent electric current as well as charge densities, magnetic field intensity, permeability, magnetomotive force, magnetic circuits and reluctances, boundary condition for magnetostatic fields, inductances (self and mutual) and inductors, as well as magnetic energy, forces, and torque. The goal of this introductory course is to provide students an elemental level of understanding of the subject of electromagnetism.

High school physics and mathematics, differential and integral calculus, basic circuit theory.

Mix of powerpoint slides and blackboard writing

作業部份: Homework assignments will be given before each exam. 考試部份: mid term x 1; test x 1;final x 1 評量部份: homework 5% each, mid-term exam 30%, test 20%, final exam 30%

Textbook: D.K. Cheng, "Field and Wave Electromagnetics," 2nd Ed., 1989

地點

ED-927

時間

Daily, 10:00 to 16:00

聯絡方式

Email: malcolm.ng@ieee.org