EC2305 TRANSMISSION LINES AND WAVEGUIDES SYLLABUS

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UNIT I FILTERS 9

The neper - the decibel - Characteristic impedance of Symmetrical Networks – Current

and voltage ratios - Propogation constant, - Properties of Symmetrical Networks - Filter

fundamentals – Pass and Stop bands. Behaviour of the Characteristic impedance.

Constant K Filters - Low pass, High pass band, pass band elimination filters - m -

derived sections – Filter circuit design – Filter performance – Crystal Filters.

UNIT II TRANSMISSION LINE PARAMETERS 9

A line of cascaded T sections - Transmission lines - General Solution, Physical

Significance of the equations, the infinite line, wavelength, velocity, propagation,

Distortion line, the telephone cable, Reflection on a line not terminated in Zo, Reflection

Coefficient, Open and short circuited lines, Insertion loss.

UNIT III THE LINE AT RADIO FREQUENCY 9

Parameters of open wire line and Coaxial cable at RF – Line constants for dissipation -

voltages and currents on the dissipation less line - standing waves – nodes - standing

wave ratio - input impedance of open and short circuited lines - power and impedance

measurement on lines –  / 4 line, Impedance matching – single and double-stub

matching circle diagram, smith chart and its applications – Problem solving using Smith

chart.

UNIT IV GUIDED WAVES BETWEEN PARALLEL PLANES 9

Application of the restrictions to Maxwell’s equations – transmission of TM waves

between Parallel plans – Transmission of TE waves between Parallel planes.

Transmission of TEM waves between Parallel planes – Manner of wave travel.

Velocities of the waves – characteristic impedance - Attenuators

UNIT V WAVEGUIDES 9

Application of Maxwell’s equations to the rectangular waveguide. TM waves in

Rectangular guide. TE waves in Rectangular waveguide – Cylindrical waveguides. The

TEM wave in coaxial lines. Excitation of wave guides. Guide termination and resonant

cavities.

L: 45, T: 15, TOTAL= 60 PERIODS

TEXT BOOK:

1. John D.Ryder, "Networks, lines and fields", Prentice Hall of India, 2nd Edition, 2006.

REFERENCES:

1. E.C.Jordan, K.G. Balmain: “E.M.Waves & Radiating Systems”, Pearson Education,

2006.

2. Joseph Edminister, Schaum’s Series, Electromegnetics, TMH, 2007.

3. G S N Raju, Electromagnetic Field Theory and Transmission Lines, Pearson

Education, 2006.