| CODE | PHY3279 | ||||||||||||
| TITLE | Applied Electromagnetism | ||||||||||||
| UM LEVEL | 03 - Years 2, 3, 4 in Modular Undergraduate Course | ||||||||||||
| MQF LEVEL | 6 | ||||||||||||
| ECTS CREDITS | 4 | ||||||||||||
| DEPARTMENT | Physics | ||||||||||||
| DESCRIPTION | Radiation theory: Scalar and vector potentials, the Lorentz Gauge, Maxwell’s Equations in terms of electromagnetic potentials Antenna theory: solutions for the scalar and vector potentials; radiation by time-varying currents: the Hertzian dipole, far fields, the half-wave antenna, radiation resistance, the loop antenna Antenna fundamentals: types of antennas, aperture, gain, efficiency, reciprocity, E- and H-planes, directivity and beamwidth, sidelobes Transmission lines continued: review of transmission line theory; impedance matching; the Smith Chart; VSWR and the Smith Chart; use of the Smith Chart as an admittance diagram; use of the Smith Chart in impedance matching; double stub matching Rectangular waveguides revisited: review of the basics; waveguide losses; rectangular cavity resonators; waveguide components: attenuators, terminations, inductive and capacitive irises, inductive posts, directional couplers Microwave measurements Network analysis: S-parameters, vector network analysers, introduction to error correction Microwave instruments (laboratory-based): generators, frequency counters, spectrum analysers, field measurement instruments, vector network analyser Measurement of dielectric properties of materials Study-unit Aims: This unit aims to develop the students understanding of, and familiarity with, the fundamental theory and basic methods of Electromagnetism with special reference to electromagnetic wave theory. It also provides an introduction to the application of the theory to antenna design and advanced microwave measurement techniques, with some laboratory experience. Learning Outcomes: 1. Knowledge & Understanding By the end of the study-unit the student will be able to: - distinguish between scalar and vector potentials; - derive and write Maxwell's equations in terms of scalar and vector potentials; - apply antenna theory to simple electric and magnetic dipole antennas to derive expressions for the radiated fields; - distinguish between basic antenna forms; - define basic antenna parameters, such as gain, efficiency, beam patterns, etc.; - apply basic concepts of impedance matching in transmission lines; - use Smith Chart for transmission line calculations involving impedance matching; - derive expressions for losses in a rectangular waveguide; - derive expressions for the field distribution and cut-off conditions for rectangular cavity reso; - explain the functions of passive rectangular waveguide components (attenuators, terminations, inductive and capacitive irises, inductive posts, directional couplers); - explain S-parameter theory and application in network analysis; - describe the function and operation of a vector network analyser; - describe the operation a range of basic microwave measurement instruments (generators, frequency counters, spectrum analysers, field measurement instruments); - explain some basic techniques for the broadband measurement of dielectric properties of materials. 2. Skills By the end of the study-unit the student will be able to: - apply the concepts of scalar and vector potentials to antenna theory; - carry out basic antenna calculations and be able to understand how electromagnetic field simulators work and be able to use these, following self-taught experience; - solve problems of impedance matching in microwave circuits; - apply knowledge and understanding of waveguide concepts and components to design simple microwave circuits; - comprehend and use microwave instruments to carry out spectrum and vector network analysis, power measurements, etc. Main Text/s and any supplementary readings: Texts: - P. LORRAIN & D. CORSON: Electromagnetic Fields and Waves, W. H. Freeman & Co. - S. RAMO, J. R. WHINERY & T. van DUZER: Fields and Waves in Communication Electronics, Wiley. - J. D. KRAUS: Electromagnetics, Fourth Edition, McGraw-Hill. |
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| ADDITIONAL NOTES | Pre-Requisite Study-unit: PHY2145 | ||||||||||||
| STUDY-UNIT TYPE | Lecture, Tutorial, Practical & Independent Study | ||||||||||||
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The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
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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