Electronics and Telecommunication Engineering - Vishwakarma ...
Electronics and Telecommunication Engineering - Vishwakarma ...
Electronics and Telecommunication Engineering - Vishwakarma ...
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Unit III<br />
MICROWAVE TUBES<br />
Bansilal Ramnath Agarwal Charitable Trust’s<br />
<strong>Vishwakarma</strong> Institute of Technology, Pune – 411 037<br />
Department of <strong>Electronics</strong> <strong>and</strong> <strong>Telecommunication</strong> <strong>Engineering</strong><br />
(10 Hrs)<br />
A. Limitations <strong>and</strong> Losses of conventional tubes at microwave frequencies. Microwave<br />
tubes – O type <strong>and</strong> M type classifications. i)O-type tubes : 2 Cavity Klystrons –Structure,<br />
Velocity Modulation Process <strong>and</strong> Applegate Diagram, Bunching Process , Expressions<br />
for o/p Power <strong>and</strong> Efficiency. HELIX TWTS: Significance, Types <strong>and</strong> Characteristics of<br />
Slow Wave Structures; Structure of TWT, Expressions for o/p Power <strong>and</strong> Efficiency.<br />
ii) M-type Tubes Introduction, Cross-field effects, Magnetrons – Different Types, 8-<br />
Cavity Cylindrical Travelling Wave Magnetron – Hull Cut-off, Modes of Resonance <strong>and</strong><br />
PI-Mode Operation, o/p characteristics. Traveling Wave Magnetron – Hull Cut-off,<br />
Modes of Resonance <strong>and</strong> PI-Mode Operation, o/p characteristics.<br />
B.Reflex Klystrons – Structure, Applegate Diagram <strong>and</strong> Principle of working,<br />
Mathematical Theory of Bunching, Power Output, Efficiency, Oscillating Modes <strong>and</strong> o/p<br />
Characteristics.<br />
Unit IV<br />
MICROWAVE SOLID STATE DEVICES<br />
(8 Hrs)<br />
A. Principle, Construction, Characteristics <strong>and</strong> applications of Gunn Diode , Tunnel<br />
Diode, PIN diode, Varactor diode, MASER.<br />
B Principle, Construction, Characteristics <strong>and</strong> applications of PIN diode, IMPATT <strong>and</strong><br />
TRAPATT.<br />
Unit V<br />
REAL WORLD APPLICATIONS OF MICROWAVE ENGINEERING<br />
A. Study of Microwave engineering such as in<br />
i) Radars<br />
ii) Communication<br />
iii) Industrial applications<br />
(8 Hrs)<br />
B. Microwave Power Measurement – Bolometer Method. Measurement of Attenuation,<br />
Frequency, VSWR, Cavity Q. Impedance Measurements<br />
Text Books<br />
1. Microwave Devices <strong>and</strong> Circuits – Samuel Y. Liao, PHI, 3rd Edition.<br />
2. Micro Wave <strong>and</strong> Radar <strong>Engineering</strong> – M. Kulkarni, Umesh Publications<br />
Reference Books<br />
1. Elements of Microwave <strong>Engineering</strong> – R. Chatterjee, Affiliated East-West Press<br />
Pvt. Ltd., New Delhi, 1988.<br />
2. Microwave <strong>Engineering</strong> Passive Circuits – Peter A. Rizzi, PHI, 1999.<br />
Structure & Syllabus of B.E (E&TC) Program – Pattern ‘C11’, Rev01, dt. 2/4/2011<br />
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