GATE SYALLUBUS FOR ELECTRONICS AND COMMUNICATION ENGINEERING

GATE SYALLUBUS FOR ELECTRONICS AND COMMUNICATION ENGINEERING
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NETWORK: Network graphs:

matrices associated with graphs; incidence, fundamental cut set and fundamental
circuit matrices. Solution methodsl; nodal and mesh analysis. Network theorems;
superposition, Thevenin and Nortan's, maximum power transfer, wye-delta
transformation, steady state sinusoidal analysis using phasors, fourier series,
linear constant coefficient differential and difference equations; time domain
analysis of simple RLC circuits. laplace and Z transforms: frequency domain
analysis of RLC circuits, convolution,2-port network parameters, driving point and
transfer functions, state equation for networks.


ANALOG CIRCUITS:

characteristics and equivalent circuits(large and small singnal) of
diodes,BJT,JFETs and MOSFET simple diode circuits: clipping, clamping, rectifier,
biasing and bias stability of transistior and FET amplifiers. Amplifiers: single
and multi-stage, differential, operational, feedback and power. Analysis of
amplifers; frequency response of amplifiers. Simple op-amp circuits. Filters.
Sinusoidal oscillators; criterion for oscillation; single-transistor and op-amp
configurations. Function generators and wave-shaping circuits, Power supplies.


DIGITAL CIRCUITS:

Boolean algebra; minimization of boolean functions; logic gates; digital IC
families( DTL,TTL,ECL,MOS,CMOS). Combinational circuits: airthmetic circuits, code
converters, multiplexers and decoders. Sequential circuits: latches and flip-flops,
counters and shift-registers. Comparators, timers, multivibrators. Sample and
hold circuits, ADCs and DACs. Semiconductor memories. Microprocessor (8085):
architecture, programming, memory and I/O interfacing


CONTROL SYSTEMS:

Basic control system components; block diagrammatic descripption,reduction of block
diagrams,properties of systems: linearity,time-invariance,stability,causality.Open
loop and closed loop (feedback) systems.Special properties of linear time-
invariance(LTI) systems-transfer function, impulse responce,poles,zeros,their
significance, and stability analysis of these systems. Signal flow graphs and their
use in determining transfer functions of systems; transient and steaty state
analysis of LTI system and frequency responce. Tools and techniques for LTI control
system analysis: Root, loci, Routh_Hurwitz criterion, Bode and Nyquist plots;
Control system compensators: elements of lead and lag compensations, elements
ofPropotional-integral

-Derivative(PID) control. State variable representation and solution of state
equation for LTI systems.


COMMUNICATION SYSTEMS:

Fourier analysis of signals - amplitude, phase and power spectrum, auto-correlation
and cross-correlation and their Fourier transforms. Signal transmission through
linear time-invariant(LTI) systems,impulse responce and frequency responce,group
delay phase delay. Analog modulation systems-amplitude and angle modulation and
demodulation systems, spectral analysis of these operations, superheterodyne
receivers, elements of hardwares realizations of analog communications systems.
Basic sampling theorems. Pulse code modulation(PCM), differential pulse code
modulation(DPCM), delta modulation(DM). Digital modulation schemes: amplitude,
phase and frequency shift keying schemes(ASK,PSK,FSK). Multiplexing - time division
and frequency division. Additive Gaussian noise; characterization using
correlation, probability density function(PDF),power spectral density(PSD). Signal-
to-noise rasio(SNR) calculations for amplitude modulation(AM) and frequency
modulation(FM) for low noise conditions.


ELECTROMAGNETICS:

Elements of vector calculus: gradient, dicergence and curl; Gauss and strokes
theorems, maxwells equation: differential and integral forms. Wave equation.
Poynting vector. Plane wavwes: propagation through various media; reflection and
refraction; phase and group velocity; skin depth Transmission lines: Characteristic
impedence; impedence transformation; smith chart; impedence matching pulse
excitation. Wave guides: modes in rectangular waveguides; boundary conditions;
cutt-off frequencies; dipersion relations. Antennas; Dipole antennas; antenna
arrays; radiation pattern; reciprocity theorem; antenna gain.



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