EC2305 TRANSMISSION LINES AND WAVEGUIDES lecture notes | for ECE - V semester |
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UNIT I FILTERS
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
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
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
UNIT IV GUIDED WAVES BETWEEN PARALLEL PLANES
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
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
L: 45, T:
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