## Anna University Syllabus

Download **EC2253 Electromagnetic Fields** ( EMF ) Electronics & Communication Engineering Syllabus for 4th Semester .

Type : Syllabus

Semester : 4th Sem

Branch : ECE ( Electronics & Communication Engineering )

Subject : Electromagnetic Field ( EMF )

Code : EC2253

Univ : Anna University & Affiliated Colleges

## Syllabus for Electromagnetic Field

Communication Theory Syllabus | Electronics Circuits II | Probability & Random Process

**E****C 2253 ELECTROMAGNETIC FIELDS**** **

**A****I****M**

To familiarize the student to the concepts, calculations and pertaining to electric, magnetic and electromagnetic fields so that an in depth understanding of antennas, electronic devices, Waveguides is possible.

**O****B****JE****C****T****I****V****E****S**

- To analyze fields a potentials due to static changes
- To evaluate static magnetic fields
- To understand how materials affect electric and magnetic fields
- To understand the relation between the fields under time varying situations
- To understand principles of propagation of uniform plane waves.

**UN****I****T I STATIC ELECTRIC FIELDS 9**

Introduction to Co-ordinate System – Rectangular – Cylindrical and Spherical Co- ordinate System – Introduction to line, Surface and Volume Integrals – Definition of Curl, Divergence and Gradient – Meaning of Stokes theorem and Divergence theorem Coulomb’s Law in Vector Form – Definition of Electric Field Intensity – Principle of Superposition – Electric Field due to discrete charges – Electric field due to continuous charge distribution – Electric Field due to charges distributed uniformly on an infinite and finite line – Electric Field on the axis of a uniformly charged circular disc – Electric Field due to an infinite uniformly charged sheet.

Electric Scalar Potential – Relationship between potential and electric field – Potential due to infinite uniformly charged line – Potential due to electrical dipole – Electric Flux Density – Gauss Law – Proof of Gauss Law – Applications.

**UN****I****T II STATIC MAGNETIC FIELD 9**

The Biot-Savart Law in vector form – Magnetic Field intensity due to a finite and infinite wire carrying a current I – Magnetic field intensity on the axis of a circular and rectangular loop carrying a current I – Ampere’s circuital law and simple applications. Magnetic flux density – The Lorentz force equation for a moving charge and applications

– Force on a wire carrying a current I placed in a magnetic field – Torque on a loop carrying a current I – Magnetic moment – Magnetic Vector Potential.

**UN****I****T III ELECTRIC AND MAGNETIC FIELDS IN MATERIALS 9**

Poisson’s and Laplace’s equation – Electric Polarization-Nature of dielectric materials- Definition of Capacitance – Capacitance of various geometries using Laplace’s equation

– Electrostatic energy and energy density – Boundary conditions for electric fields – Electric current – Current density – point form of ohm’s law – continuity equation for

current.Definition of Inductance – Inductance of loops and solenoids – Definition of mutual inductance – simple examples. Energy density in magnetic fields – Nature of magnetic materials – magnetization and permeability – magnetic boundary conditions.

**UN****I****T IV TIME VARYING ELECTRIC AND MAGNETIC FIELDS 9**

Faraday’s law – Maxwell’s Second Equation in integral form from Faraday’s Law – Equation expressed in point form.

Displacement current – Ampere’s circuital law in integral form – Modified form of Ampere’s circuital law as Maxwell’s first equation in integral form – Equation expressed in point form. Maxwell’s four equations in integral form and differential form.

Poynting Vector and the flow of power – Power flow in a co-axial cable – Instantaneous Average and Complex Poynting Vector.

**UN****I****T V ELECTROMAGNETIC WAVES 9**

Derivation of Wave Equation – Uniform Plane Waves – Maxwell’s equation in Phasor form – Wave equation in Phasor form – Plane waves in free space and in a homogenous material.

Wave equation for a conducting medium – Plane waves in lossy dielectrics –Propagation in good conductors – Skin effect.

Linear, Elliptical and circular polarization – Reflection of Plane Wave from a conductor – normal incidence – Reflection of Plane Waves by a perfect dielectric – normal and oblique incidence. Dependence on Polarization. Brewster angle.

**T****U****T****O****R****I****A****L 15 TOTAL : 60 PERIODS TEXT BOOKS**

1. W H.Hayt & J A Buck : “Engineering Electromagnetics” TATA McGraw-Hill, 7th Edition 2007 (Unit I,II,III ).

3. E.C. Jordan & K.G. Balmain “Electromagnetic Waves and Radiating Systems.” Pearson Education/PHI 4nd edition 2006. (Unit IV, V).

**R****E****FERENCES**

1. Matthew N.O.Sadiku: “Elements of Engineering Electromagnetics” Oxford University Press, 4th edition, 2007

2. Narayana Rao, N : “Elements of Engineering Electromagnetics” 6th edition, Pearson Education, New Delhi, 2006.

3. Ramo, Whinnery and Van Duzer: “Fields and Waves in Communications Electronics” John Wiley & Sons ,3rd edition 2003.

4. David K.Cheng: “Field and Wave Electromagnetics – Second Edition-Pearson Edition, 2004 .

5. G.S.N. Raju, Electromagnetic Field Theory & Transmission Lines, Pearson Education, 2006

**Anna Univ Syllabus, ece syllabus, 4th sem syllabus, syllabus for emf, regulation 2008**