COMMUNICATION NETWORK & TRANSMISSION LINES

Characteristic parameters of symmetrical and asymmetrical two port networks and their design : Image impedance, Iterative impedance, Characteristic impedance, Propagation coefficient, Image transfer coefficient, Iterative transfer coefficient, Lattice and bridged-T networks, Reactive matching networks, Matching techniques, Insertion loss, Symmetrical and asymmetrical attenuators and their design. Passive LC filters : Analysis and design of low pass, High pass, Band pass and band elimination filters, M-derived filters, Composite filters, Filter specifications, Butterworth approximation, Chebyshev approximation, Elliptic function approximation, Frequency transformation. Positive real function, LC, RL, RC and RLC network synthesis, Foster and Cauer network, Minimum positive real function, Brune's method, Bott-Duffin method, Synthesis-coefficient. Transmission line fundamentals : Lumped parameter equivalent, Voltage and current on a transmission line, Infinite line, Characteristic impedance and propagation constant, Waveform distortion, Attenuation and phase equalizers, Distortion-less line, Loading, Reflection on a line, Reflection coefficient, Input and transfer impedances, Open circuit and short circuit line, Reflection factors, Reflection loss, Insertion loss, T and p equivalents of a line, Location of line fault. Construction and design of two wire line and co-axial cable. Line at radio frequencies, Parameters of line and co-axial cable at radio frequencies, Dissipation-less line, Voltage and current on a dissipation-less line, Standing waves, Standing wave ratio, Input impedance of open circuit and short circuit, Power and impedance measurement on lines, Eighth-wave, Quarter-wave and half wave line, Circle diagram,Smith chart, Solution of problems using Smith chart, Single and double stub matching. Introduction to micro-strip lines and its analysis.