EC 701-RF & Microwave Engineering |
Introduction: |
RF & Microwave Spectrum, Historical Background, Typical applications of RF & Microwaves
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Microwave Waveguides : |
Rectangular and Circular Waveguides– Mode structures, Cut-off frequency, Propagation
Characteristics, wall currents, Attenuation constant, waveguide excitations. |
Waveguide Passive Components: |
Waveguide Resonators – Rectangular & Cylindrical; Resonant frequencies, Mode structures, Qfactor,
Co-axial Resonators; Excitation & coupling of cavities, Design of resonators. Periodic
Structures-Filters.
N-port networks – circuit representations, Z-matrix, Y-matrix, S-matrix, transmission matrix,; their
relationships; attenuators, phase shifter, directional couplers, Bethe-hole coupler, Magic tee, hybrid
ring, circulators, isolators, antennas: Horns- sectoral horns, Pyramidal horns, Parabolic reflector,
Cassigran feed, Patch antennas, antenna arrays. Scattering matrix representations of passive
components. Transitions: coaxial lines to waveguide, to micro-strip lines. Design of transitions.
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Planar structure: |
Strip lines, Micro-strip lines, coplanar structure, Slot lines, Suspended strip lines, Fin lines –
Configurations, Field patterns, propagation characteristics, Design considerations. Comparison of
characteristics of lines.
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Microwave Tubes: |
Limitations of conventional tubes in microwaves; Multi-cavity Klystron, Reflex klystron;
Magnetron, Travelling wave tube, Backward wave oscillator – working principles, characteristics. |
Semiconductor Microwave Devices: |
Tunnel diode; Gunn diode–design considerations for their waveguide mount. Avalanche diode –
IMPATT, TRAPATT, Microwave bipolar transistor, hetero-junction bipolar transistor, Microwave
field-effect transistor–JFET, MOSFET, MESFET, Parametric amplifiers; ICs
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Applications of Microwave |
Radar systems – Pulsed radar, MTI, Tracking radars, Altimeter- Principles of operation,
applications.
Satellite communication systems - basic working principles. Up-link & down-link gain budgets.
Industrial applications: Process control, Measurement Techniques of parameters, A few examples
of industrial measurements: Thickness of dielectric sheets, diameters of wires, Moisture content in
solid & liquids. Doppler sensors, Microwave heating, its applications. Applicators for bio-med
applications.
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Microwave Measurements: |
Microwave Bench, Slotted line, Tuneable Probe, VSWR Meter, Slide screw tuner, Variable
shorted line – operating principles with diagrams.
Measurements of VSWR – Low, Medium and High, Measurement of Power – Calorimetric
method, Thermocouple, Bolometers, Frequency measurement, Impedance measurement by shift in
minima. Network Analysers, TDR, and Spectrum analyser.
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Advance Networks. |
Introduction to Mobile Communication and Networks - their types and basic principles;
ISDN and B-ISDN; ATM- Header structure, Protocol stack, Signaling and Service category,
Virtual Private Networks (VPN), MPLS support for VPN
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Text Books: |
1 K C Gupta Microwaves New Age Publishers
2 ML Sisodia & GS Raghuvansi Microwave Circuits and Passive Devices
New Age Publishers
3. David M Pozar Microwave Engineering John Willy & Sons Inc.
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References: |
1 Robert E Collin Foundation of Microwave Engineering, 2ed edition,
McGraw Hill, Inc.
2 SY Liao Microwave Devices & Circuits Pearson Education /PHI
3 MI Skolnik Introduction to Radar Systems Tata-McGraw Hill
4 PA Rizzi Microwave Engineering-Passive Circuits Pearson Education
5 GP Srivastava & VL Gupta Microwave Devices & Circuit Design PHI
6 S Das & A Das Microwave Engineering Tata-McGraw Hill
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