ELECTRONIC DEVICES CIRCUITS AND SYSTEMS
UNIT I
DEVICES AND CIRCUITS:
Diodes and Transistors - PN Point contact Zener, varactor,
Tunnel, step recover - input and output characteristics
of BJI, FET, UJT, Opto - electronic devices - Biasing
and stabilisation of transistor circuts - analysis using
h - parameters - calculation of gain, impedance and
bandwidth .
UNIT II
AMPLIFIERS AND OSEILLATORS:
Design and analysis of RC, Dc coupled, Large signal
amplifiers, Differential amplifier and tuned amplifiers
- Oscillators - Critoria for oscillation, resonance
type oscilators RC Phase shift wein bridge oscillators
UNIT III
RECTIFIERS AND POWER SUPPLIES:
Half wave, Full wave and Bridge rectifiers will all
types of filters, regulated power supplies. SMPS.
UNIT IV
MULTIVIBRATORS AND A VESHAPING:
Astable, Bistable Monostable and submit trigger saw
tooth generation using BJT and UJT clipping and clamping
circuits using diodes and transistors.
UNIT V
LINEAR AND DIGITAL INTEGRATED CIRCUITS:
IC fabrication techniques OPAMPS and its applications
A/D and D/A converters, PILL. Wave form generators Voltage
regulators, IC Power amplifiers.
UNIT VI
DIGITAL CIRCUITS:
Switching algebra, Number systems, Logic gates and circuits,
Minimization techniques, Logic families, shift registers,
Counters, Multiplexersi Dimultiplexers, semiconductor
Memories, LSI, VLSI.
UNIT VII
MICROPROCESSORS:
8 and 16 bit microprocessors and their architecture,
Instruction set , Peripherals and Interfacing Microcontrollers
Microprocessor based system design.
UNIT VIII
COMPUTER SYSTEMS:
Data representation, Elements of high level programming
languages (Pascal and C) Data Structures, Computer architecture,
processor design, control unit design, Memory organization
, I/O system organisation.
UNIT IX
MEASUREMENTS AND INSTRUMENTATION:
Electrical transducers and their characteristics, measurement
techniques, and related Instrumentation.
UNIT X
MICROWAVE DEVICES AND CIRCUITS:
Microwave devices sehotky, PIN diodes, Gunn diodes.
Microwave aplifiers and oscillators. Microwaves components
microwave measurements.
PAPER II
COMMUNICATION ENGINEERING
UNIT I
AM/FM TRANSMITTERS AND RECEIVERS: AMPLITUDE, FREQUENCY
AND PHASE MODULATIONS:
Definitions and equations, modulation, index -Frequency
spectrum of AM/FM signals, modulators and demodulators
- Diode detecter, slope detector, Balanced slope detector
foster seely discriminator Ratio detector. Transmitters:
Allocation of frequency for various services, High power
transmitter, Aerial coupling. Receiver: Superbeter odyne,
SSB and FM receivers noise considerations. Digital communication:
PCM, TDM and FDM.
UNIT II
TRANSMISSIONLINES, ANTENNAS AND WAVE PROBAGATION:
Transmission lines and Wave guides:
Characteristic impedance of transmission lines, standing
waves - matching using smith chart-rectangular and circular
wave guides - resorators, isolatored circulators and
direction couplors.
Antennas: Isotropic radiator, dipole, vertical antenna,
resonant and non-resonant antennas - arrays - VHF, UHF,
Microwave antennas - radiations pattern for the above
antennas. Wave propagation: Ground wave, surface wave,
HF and LOS propagation.
UNIT III
ANALOG AND DIGITAL SIGNAL PROCESSING:
Signals and systems:
Introduction - Vector space - concepts - Representation
of signals - Linear time invariant systems - discrete
time signals and discrete time systems.
Analog Signal Processing:
Circuit and Network Theorems, Four Terminal Networks
- I, II, Lattice, Bridge - T networks, Equalizers, wave
filters, Attenuators.
Digital:
Linear shift invariant systems - DFT and FFT - FIR and
IIR and digitel filters - Design methods, FFT - Wiener
and matched filters applications.
UNIT IV
TELEVISION:
Television systems and standards: CCIR standards, NTSC,
PAL, SECAM system Black and White transmission - scanning,
blanking and synchroaising pulses. Monochrome Reception:
Common, Video and Sound Circuits, Synchronizing circuits
vertical deflection circuits, horizontal deflection
circuits.
Colour Transmission and Reception: Colorimetry, Generation
of RGB signals, compatibility with monochroms TV and
with band width, PAL encoding techniques, PAL decoders,
colour TV picture tubes, Remote Tuning of TV Receivers.
UNIT V
RADAR SYSTEMS:
Radar equations - range, minimum detectable signal,
rader cross section, PRF and range ambiguities, Propogation
effects and system losses. Types: CW, doppler, FM-CW,
MTI, and pulse doppler Radar. Tracking techniques, conical
and monopoles, Tracking-in range and tracking in doppler.
Radar Transmitter & Receiver: Radar Transmitter
source and Modulators, Radar antennas Radar receivers,
Duplexers and Displays.
UNIT VI
SATELLITE COMMUNICATION:
Orbit and Launch: Equation of Motion, tracking and orbit
determination, satellite launches, satellite performance,
station keeping, system Co-ordination and control.
UNIT VII
COMMUNICATION SYSTEMS:
Satellite sub-system, FSS, BSS, Multiple axes techniques.
FDMA, TDMA and CDMA. Earth station configuration, Tracking
and receiver sub-systems.
UNIT VIII
FIBRE OPTIC COMMUNICATION:
Optical fibres, optical loss, Modes and configuration,
Fibre materials, attenuation, signal distortion. Optical
sources - LED, LASERS, Modulation and reliability considerations,
Fibre to Fibre joint, splicing techniques. Optical receivers,
Photo diodes, Photo detectors.
UNIT IX
INFORMATION THEORY AND CODING:
Information measure, properties of various entropies,
Noiseless coding, Kraft-Mcmillan inequality, Huffman's
method of coding, coding Theorem. Noisy coding, classification
of channels and their calculation, Decoding schemes.
Correlation receiver, matched filter, Wiener filter,
linear estimation. Testing of hypothesis, Parameter
estimation.
UNIT X
TELEPHONY, COMMUNICATION SWITCHING AND ACOUSTICS:
Telephony: Telephone hand sets, transmitters and receivers,
telephone traffic variation, busy hours, lost calls,
dialing methods, various signalling systems. Communication
Switching: Simplex, duplex and quadruplex working receivers,
dialing methods, Digital Switching - circuit switching,
packet switching, message switching, numbering plans
Routing methods, signalling types, traffic measurements,
EPABX modem.Acoustics: Microphone, different types -
Loud speakers, different types - parameters - speech
- hearing sound level meter - studio acoustics - sabine
Formula - Reverbration time, stereo - effect.
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