Module Catalogue

### EEE2205 : Electromagnetic Fields and Waves

• Offered for Year: 2017/18
• Module Leader(s): Dr Naayagi Ramasamy
• Lecturer: Dr Charles Su
• Owning School: Engineering
• Teaching Location: Singapore
##### Semesters
 Semester 2 Credit Value: 10 ECTS Credits: 5.0

#### Aims

To provide a structured presentation of electromagnetic theory starting from basic principles associated with stationary and moving charges. A prime aim is to enhance the students' knowledge of electromagnetic fields and wave behaviour and how this can be used to describe quasistatic fields, transmission lines and plane waves.

#### Outline Of Syllabus

•       The Electrostatic Field:
Forces and charges. Effects of stationary and moving charges. Coulomb’s law and the definition of the electric field. Electric scalar potential V and potential difference. The electric field as the gradient of V. Electric flux density and Gauss’s law. Effects of dielectric materials. Permittivity. Capacitance.
•       Electric Current:
Ohm’s law at a point. Conduction current. Displacement current. Steady current flow.
•       The Magnetic Field:
The magnetic field of a current and the definition of magnetic flux density. Surface integral of flux density. Effects of material media. The definition of magnetic flux intensity vector H and the MMF law. Permeability. Inductance.
•       Time Changing Magnetic Fields:
Faraday’s law. The difference between EMF and potential. Open-circuited conductor in an induced field. Mechanism of current equalisation around a circuit, Ohm’s law. Self-capacitance, capacitance to earth.
•       Maxwell’s Equations :
Basic relationships in integral form. Transformation to differential form. Gradient, divergence and curl. Multiple vector operations. Examples of divergence and curl type fields. The importance of the concept of ‘potential’ in field calculations. Poisson’s and Laplace’s equations. Divergence of J, continuity equation. Magnetic vector potential A. The total electric field at a point.
•       Electromagnetic Waves:
Derivation of the wave equation, solution of wave equation for TEM case, plane wave concepts, wavelength, attenuation and phase constants, propagation of waves in lossless and lossy media.
•       Transmission Lines:
Concepts of distributed circuits, derivation of transmission line parameters, attenuation and phase coefficients, characteristic impedance, SWR definition, lossless and lossy lines and matching techniques. Examples in engineering practise, measurement and matching techniques.
•       Engineering Examples:
Design implications of skin effect, corona discharge, shielding, review of EMC concepts and legislative requirements.

#### Teaching Methods

##### Teaching Activities
Category Activity Number Length Student Hours Comment
Scheduled Learning And Teaching ActivitiesLecture61:006:00Tutorials
Scheduled Learning And Teaching ActivitiesLecture241:0024:00N/A
Guided Independent StudyAssessment preparation and completion15:005:00Case study/ problem solving exercises.
Guided Independent StudyAssessment preparation and completion15:005:00Lab report.
Guided Independent StudyAssessment preparation and completion12:002:00Final examination.
Guided Independent StudyAssessment preparation and completion181:0018:00Revision for final examination.
Scheduled Learning And Teaching ActivitiesPractical23:006:00Lab sessions.
Guided Independent StudyIndependent study341:0034:00General reading; reviewing lecture notes; solving practice problems.
Total100:00
##### Teaching Rationale And Relationship

Lectures provide core material and guidance for further reading, problem solving practice is provided through tutorials. Work is further re-enforced through laboratory sessions.

#### Assessment Methods

The format of resits will be determined by the Board of Examiners

##### Exams
Description Length Semester When Set Percentage Comment
Written Examination1202A70N/A
##### Other Assessment
Description Semester When Set Percentage Comment
Practical/lab report2M15N/A
Case study2M15Case study/ problem solving exercises.
##### Assessment Rationale And Relationship

The laboratory report, case study/ problem solving exercises enable students to demonstrate knowledge of the impedance transformation properties of transmission lines and to demonstrate practical impedance matching techniques. The examination provides the opportunity for the student to demonstrate their understanding of the lecture course material.