EIE338 Applied Electromagnetics. Applications of Electromagnetics. 1. When
wave ... F. T. Ulaby, Fundamentals of Applied Electromagnetics,. Prentice Hall ...
EIE338 Applied Electromagnetics Applications of Electromagnetics 1. When wave propagation effects cannot be neglected
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2. When radiation is involved
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Applications 1. When detailed field distribution is required
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Examples Propagation effects cannot be neglected when the signal path is not much smaller than the wavelength (e.g. ~0.1 wavelength) • High speed digital circuits – System Clock ~ 1GHz
• Inside the circuit, velocity of electromagnetic wave ~ 2x108 m/s – If signal frequency f = 1GHz, wavelength λ = 2x108 / 1x109 = 0.2m Intro.3
Examples • High frequency analog circuits – Frequency ~ 1GHz – 10GHz • Bluetooth • WLAN
• Optical Communications
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Examples Radiation becomes efficient when the dimension of conductor larger than 0.1 wavelength • Antennas
• Electromagnetic interference and compatibility
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Examples Other applications – Linear motor
– Computer
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Who am I? Lecturer: Room no.: Phone no.: e-mail:
Dr. W.Y.Tam DE604 27666265
[email protected]
Handouts, Tutorials, … are available at www.en.polyu.edu.hk/~em/em06.htm I am available at (Consultation hour) 9am – 10:30am (Monday) 1:30pm – 2:30pm (Friday) Intro.7
Assessment & Textbooks Assessment Examination Practical – Mini-project Test (week 3 & week 6) Assignments
60% 15% 15% 10%
Textbook and Reference – F. T. Ulaby, Fundamentals of Applied Electromagnetics, Prentice Hall, 2004. – D. K. Cheng, Fundamentals of Engineering Electromagnetics, Addison Wesley, 1993.
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Syllabus Lecture 1 • Introduction • Vector Analysis Lecture 2-3 Static fields • Electrostatics • Magnetostatics Lecture 4-5 – Time-varying fields – Maxwell’s equations – Electromagnetic waves
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Syllabus Lecture 6 • Material media Lecture 7-10 Applications • Magnetic circuit design • Radiation • Signal transmission
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