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PAPER V : ADVANCED ELECTRONICS

Unit I
: Semiconductor Devices FET as a Voltage Variable Resistor-Common Source Amplifier at High Frequencies- Common Drain Amplifier at High Frequencies-Silicon Controlled Rectifier (SCR)- Characteristics-SCR Power Control-Tunnel Diode Optoelectronics: Photo Resistor-Photo Diode-Photo Transistor-LED-Photo Voltaic Effect-Solar Cells Operational Amplifier: Frequency Response of an Op-Amp-Parameters of an Op-Amp-Sign Changer-Scale Changer-Adder-Subtractor-Phase Shifter-Differential Amplifier-Integrator-Differentiator-Analog Computer Setup to Solve Linear Simultaneous Equation-Differential Equations in Physics- Logarithmic & Exponential Amplifiers-Active Filters.

Unit II
: Digital Circuits & Devices Logic Families-Combinational Logic-Function of Combinational Logic-Flip Flops and other Multivibrators-Counters Shift Registers-Memories RAM, ROM, PROM, EPROM-Charge Coupled Devices (CCD)

Unit III
: Signal Processing & Data Acquisition Wave Form Generators and Wave Shaping Circuits-Sinusoidal Oscillators-Phase Shift Oscillator-Wein Bridge Oscillator-Crystal Oscillator Multivibrators Comparators-Schmitt Trigger-Square Wave & Triangular Wave Generators-Pulse Generators-IC 555 Timer and its Application-Signal and Signal Processing-Analog Multiplexer and Demultiplexer-Sample and Hold System-D/A Converters-A/D Converters.

Unit IV
: Antennas & Wave Propagation Terms and Definition-Effect of Ground on Antennas-Grounded λ/4 Antenna-Ungrounded λ/2 Antenna-Antenna Arrays-Broadside and End Side Arrays-Antenna Gain-Directional High Frequency Antennas-Wideband and Special Purpose Antennas-Sky Wave Propagation- Ionosphere-Ecles & Larmor Theory-Magneto Ionic Theory-Ground Wave Propagation. Microwaves Microwave Generation-Multicavity Klystron-Reflex Klystron-Magnetron-Travelling Wave Tubes (TWT) and other Microwave Tubes-Microwave Transistors-MASER-Tunnel Diode-Gunn Diode. Anx.21 D - M.Sc. Physics (SDE) 2007-08 Page 11 of 16 11

Unit V
: Radar and Television Elements of a Radar System-Radar Equation-Radar Performance Factors-Radar Transmitting Systems-Radar Antennas-Duplexers-Radar Receivers and Indicators-Pulsed Systems-Other Radar Systems-Black & White TV Transmission and Reception-Colour TV Transmission and Reception. Communication Electronics Analog and Digital Signals – Modulation – Types of Modulation- Amplitude modulation theory – Frequency spectrum of the AM wave – Representation of AM – Power relations in the AM wave – Generation of AM – Basic requirements- Description of frequency and phase modulation – Mathematical representation of FM – Frequency spectrum of the FM wave- Effects of noise on carrier – pre emphasis and de emphasis -other forms of interference- intersystem comparisons- comparison of wide band and narrow band FM – Generation of FM– Pulse Modulation Techniques

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