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Pre-requisites:
ECE 312 - Electromagnetics I, ECE 322 - Electromagnetics II, MAT 202 - Engineering Mathematics II, ECE 514: Transmission Lines
Course Purpose:
To introduce students to microwave components and circuits in terms of
scattering parameters, electrical characteristics of waveguides through
electromagnetic field analysis, and basics of microwave amplifiers.
Students are expected to analyse microwave network through application to
impedance matching and tuning, design of microwave resonators, passive
components, filters, and microwave antennas.
Expected Learning Outcomes:
Upon completion of this course, a student should be able to:
i. discuss the operation of
components and devices used in RF & Microwave systems;
ii. describe the principles of design and operation of devices for generation &
processing of RF signals at
different power levels;
iii. discuss the applications of RF & microwave systems in communication,
control and instrumentation;
vi. discuss recent developments in broadband communications for voice, data and
video communication
requirements and their relationship with microwaves;
v. design microwave antenna;
vi. explain the basic structures of RF / microwave transmission lines
(microstrip, strip);
vii. identify TEM, TE, and TM waves;
viii. explain operation of
rectangular waveguide;
ix. describe the lumped element circuit model for a transmission line;
x. design impedance matching networks for microwave circuits.
Course Content:
Introduction:
Components of RF and microwave design, Behaviour of passive components,
Propagation of guided waves. Micro-stripline circuits; Evaluation of attenuation
constant for the rectangular waveguide.
Waveguides and Components:
Review of electromagnetic (EM) spectrum.
Rectangular waveguides, Circular
Waveguides, Microwave cavities.
Microwave antennas:
electromagnetic horns; reflector antennas; micro-strip antennas; phased arrays.
Micro Strip Antenna. Directional couplers. Circulators, isolators. Wave guide
couplings, bends and twists, Transitions, hybrid couplers, Matched load,
Attenuators and phase shifters, Eplane, H-plane and Hybrid Tees, Hybrid ring.
Waveguide discontinuities: Windows, Irises and Tuning screws, Detectors, wave meters. Strip Lines: Microstrip lines. Parallel strip lines. Coplanar strip lines. Shielded strip lines.
Microwave Active circuits: Microwave transistors and tunnel diodes.
Microwave FETs. Transferred electron devices: Avalanche transit time devices.
Microwave linear beam tubes. Microwave crossed-field tubes. Microwave
Communication Systems. Effect of Biological Exposure to microwave radiation.
Microwave tubes:
Klystron, Reflex Klystron, Magnetron, TWT,
BWO: Their schematic, Principle of
operation, performance characteristics and application.
Microwave semiconductor devices:
PIN diode, Tunnel diode, LSA diode, varactor diode, Gunn Devices, IMPATT and
TRAPATT, their Principal of operation, characteristics and applications.
Microwave Relays: Line-of-site path characteristics, Microwaveradio stations and repeaters.
Mode of Delivery
Lectures, Class discussions, e-learning and laboratory tests
Instructional Materials
Handouts, textbooks, lecture notes, e-materials, Chalkboard, Whiteboard,
LCD/Overhead Projector, Computer with simulation software
Course Assessment:
Continuous Assessment Tests (20%), Practicals 10%, End of semester Examination
(70%)
Recommended book:
(ii)
Collin, R.E. Foundations for Microwave Engineering; TMH 2nd Ed. ISBN-10:
0780360311
(iii) Rizzi P. A., Microwave Engineering: Passive Circuits;
PHI. ISBN-10: 0135867029
(iv) Pozar D.
M., Microwave Engineering, Wiley, 2012. ISBN-10: 0471448788