| CODE | PHY3120 | ||||||||
| TITLE | Electromagnetism | ||||||||
| UM LEVEL | 03 - Years 2, 3, 4 in Modular Undergraduate Course | ||||||||
| MQF LEVEL | 6 | ||||||||
| ECTS CREDITS | 6 | ||||||||
| DEPARTMENT | Physics | ||||||||
| DESCRIPTION | Prerequisite PHY1140 and PHY1160 Mathematical background: Gradient; divergence; curl; Laplacian operator; Divergence Theorem; Stokes' Theorem Electrostatics: Coulomb's law; electric field of a charge distribution; Gauss' law; divergence of E Steady currents - magnetostatics: Lorentz force; Biot-Savart law; divergence of B; Ampére's law Time-varying fields: Faraday's induction law; curl of E; vacuum displacement current; curl of B Electromagnetic waves in free space: Maxwell's equations in free space; wave equations for E and B; plane wave solutions for the wave equation; polarization Electric fields in insulators: Electric dipole moment; dielectric polarization; dielectrics in non-uniform electric fields; polarization charge density and surface charge density; electric displacement vector D; electric susceptibility Magnetic fields in matter: Magnetic dipole moment; magnetisation vector M; magnetic intensity vector H; magnetic susceptibility Electromagnetic fields in linear, isotropic and homogeneous media: Maxwell's equations in LIH media; wave equation for LIH media; conducting media; skin depth; E and H vectors in lossy media; complex permittivity and permeability Electromagnetic field energy: Energy density in electromagnetic fields; energy flow; Poynting's Theorem; Poynting vector in free space and LIH media Boundary conditions at the interface between two media for the field vectors E, B, D and H Applications of the boundary conditions: Reflection and refraction of plane waves at the interface between dielectric media; Fresnel equations; Brewster angle; reflection and refraction at the surface of a good conductor Propagation of electromagnetic waves in waveguides: Parallel wire transmission lines; line equations; characteristic impedance; coaxial cables; rectangular waveguides; TEnm and TMnm propagation modes in rectangular waveguides; cut-off frequency Radiation theory: The scalar and vector potentials; ?(r) and A(r); Lorentz Gauge; Maxwell's equations in terms of ?(r) and A(r); antenna theory - solutions for ?(r) and A(r); radiation by time-varying currents - Hertzian dipole; far fields; half-wave antenna; radiation resistance; loop antenna Recommended Texts: - I S Grant and W R Philips, Electromagnetism, John Wiley and Sons - W N Cottingham and D A Greenwood, Electricity and Magnetism, Cambridge University Press - P Lorrain and D Corson, Electromagnetic Fields and Waves, W H Freeman and Co - S Ramo, J R Whinery and T vanDuzer, Fields and Waves in Communication Electronics, John Wiley and Sons - R E DuBroff, S V Marshall and G G Skitek, Electromagnetic Concepts and Applications, Prentice Hall - D H Staelin, A W Morgenthaler and J A Kong, Electromagnetic Waves, Prentice Hall - J D Kraus, Electromagnetics, McGraw-Hill - F W Ulaby, Fundamentals of Applied Electromagnetics, Prentice Hall - C A Balanis, Advanced Engineering Electromagnetics, John Wiley and Sons - C J Camilleri, Vector Analysis, Malta University Press |
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| STUDY-UNIT TYPE | Lecture | ||||||||
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| LECTURER/S | Charles V. Sammut |
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The availability of optional units may be subject to timetabling constraints. Units not attracting a sufficient number of registrations may be withdrawn without notice. It should be noted that all the information in the description above applies to study-units available during the academic year 2023/4. It may be subject to change in subsequent years. |
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