Fields and Wave_Class_Lecture_2014_1-47.pdf

Dr. Khondokar Habibul Kabir

Osaka

University

Fields and WavesElectromagnetic

EEE 4605

Room 40401768 451 451

Electromagnetic Fields and Waves

Recommended Text Books

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“Elements of Electromagnetics”,By - M.N.O. Sadiku,5th edition Oxford University Press, 2009.M

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Dr. K. Habibul Kabir

“Field and Wave Electromagnetics”By David K. Cheng,Addison-Wesley; 2nd edition.

“Fields and Waves in Communication Electronics”By Simon Ramo, John R. Whinnery, Theodore Van Duzer

John Wiley & Sons, Inc.; 3rd edition

Follow the slides unless otherwise instructed

ftp://10.220.20.25/EEE 4605 Fields and Wave/



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It involves the analysis, physical interpretation, and application of electric and

magnetic fields.

• Microwaves,

• Antennas,

• Electric machines,

• Satellite communications,

• Bioelectromagnetics,

• Plasmas,

• Nuclear research,

• Fiber optics,

• Electromagnetic interference,

Electromechanical energy conversion,

• Radar meteorology, and

• Remote sensing.

EM applications in various disciplines such as

Electromagnetics (EM) is regarded as the study of the interactions between

electric charges at rest and electric charges in motion.

The electric field describes the electric force experienced

by a motionless positively charged test particle at any pointin space relative to the source(s) of the field. The concept of

an electric field was introduced by Michael Faraday.

Electric field surrounding

a positive (red) and a

negative (blue) charge.



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EM fields are used in induction heaters for melting, surface hardening, and

soldering operations.

Dielectric heating equipment uses shortwaves to join or seal thin sheets of plasticmaterials.

EM energy offers many new and exciting possibilities in agriculture. It is used, for

example, to change vegetable taste by reducing acidity.

• Transformers,

• Electric relays,

• Radio,

• Tv,

• Telephone,

• Electric motors,

• Transmission lines,

• Waveguides,

• Antennas,

• Optical fibers,

• Radars, and

• Lasers.

EM devices

In physical medicine, for example, EM power, either in the form of shortwaves or

microwaves, is used to heat deep tissues and to stimulate certain physiological

responses in order to relieve certain pathological conditions.



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The subject of electromagnetic phenomena can be summarized in Maxwell's

equations:

A quick look at these equations shows that we will be dealing with vector

quantities.

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Documents

Fields and Wave_Class_Lecture_2014_1-47.pdf