EC25C06 Electromagnetic Fields and Transmission Lines – Semester III – ECE – R-2025

Subject Code & Name: EC25C06 – Electromagnetic Fields and Transmission Lines

Regulation: R-2025

Semester: III (Third Semester)

Branch: B.E. Electronics and Communication Engineering (ECE)

Credits / L-T-P: 3 Credits | L-T-P: 3-0-0

Course Objectives

• Covers static electric and magnetic field laws, Maxwell’s equations, and electromagnetic wave propagation across media, transmission lines, and waveguides.

Full Unit-wise Syllabus

Unit I – Coordinate Systems

Fundamentals of scalars and vectors, Coordinate systems.

Unit II – Electrostatics

Coulomb’s Law, Gauss’s Law, Electric Scalar Potential, Electric Boundary Conditions, Capacitance, Electrostatic Potential Energy.

Unit III – Magnetostatic

Ampere Circuital law- Biot–Savart Law, Magnetic Forces and Torques, Maxwell’s Magnetostatic Equations, Vector Magnetic Potential, Magnetic Boundary Conditions, Inductance, Magnetic Energy.

Unit IV – Maxwell’s equations

Equation of continuity, Maxwell’s equations for time varying fields, boundary conditions. Wave equation, EM waves in conducting medium and dielectric medium , Uniform plane wave equation.

Unit V – Transmission Lines

Transmission Lines, types, two-wire line-Equivalent circuit , characteristic impedance, propagation constant, input impedance, VSWR, reflection and transmission coefficients, return loss, quarter-wave transformer -impedance matching using smith chart.

Unit VI – Waveguide

Parallel plate, TEM-TM-TE-Cut off frequency, rectangular waveguide, parameters related to waveguides.

Activities: GATE Questions, Assignments, and Project-based learning

Course Outcomes (COs)

• CO1: Define and explain the fundamental concepts of electrostatics and magnetostatics including Coulomb’s law Gauss’s law, Ampere’s law, and Biot Savart law.
• CO2: Apply Maxwell’s equations and boundary conditions to analyze electric and magnetic fields in static and time varying conditions.
• CO3: Analyze electromagnetic wave propagation in conducting and dielectric media using wave equations and uniform plane wave concepts and determine modes (TEM, TE, TM) and cutoff frequencies for rectangular waveguides.
• CO4: Use modern engineering tools (simulation software/field visualization tools) to model electrostatic and magnetostatic problems.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Assignment (20%), Software activity (20%), Quiz (20%), Internal Examinations (40%)

Source: Official Anna University – B.E. Electronics and Communication Engineering R-2025 Curriculum
Last Updated: September 2026