This course will enable the students to –
Course outcomes (COs):
Course |
Learning outcomes (at course level) |
Learning and teaching strategies |
Assessment Strategies |
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PAPER CODE |
Paper Title |
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PHY 424(B)
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Microwave Electronics- II (Theory)
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The students will be able to:
CO125: have knowledge of Avalanche Transit Time Device and Transferred Electron Device and differentiate between them. CO126: explain and analyse various microwave devices. CO127: have knowledge of antennas in communication systems., Analyze the radiation mechanisms of antennas and develop an ability to discriminate between antennas on the basis of their electrical performance. CO128: understand the significance of microwave communication. CO129: explain the basics of satellite communication. |
Approach in teaching: Interactive Lectures, Discussion, Tutorials, Demonstration, Power Point Presentation.problem solving in tutorials
Learning activities for the students: Self learning assignments, Effective questions, Seminar presentation. Additional learning through online videos and MOOC courses |
Class test, Semester end examinations, Quiz, Solving problems, Assignments, Presentations |
(a) Avalanche Transit Time Device: Read Diode, Negative resistance of an avalanching p-n junction diode ,IMPATT and TRAPATT Oscillator.
(b) Transferred Electron Device: Gunn Effect, two valley model, High field domains, Different modes for Microwave generation.
Termination (Short circuit and mathced terminations) Attenuator, Phase changers, E & H plane Tees, Hybrid Junctions. Directional coupler. Parametric Amplifier: Varactor, Equation of Capacitance in Linearly graded & Abrupt p-n Junction, Manely Rowe relations, parametric upconvertor and Negative resistance parametric amplifier, use of circulator, Noise in parametric amplifiers.
Introduction to antenna parameters, Magnetic Currents, Electric and magnetic current sheet, Field of Huygen's source, Radiation from a slot antenna, open end of a wave guide and Electromagnetic Horns. Parabolic reflectors, Lens antennas. Radiation fields of Microstrip wave guide, Microstrip antenna calculations, Mircrostrip design formulas.
Modes of Microwave Communication: LOS, Diffraction, Troposphere, Line of sight microwave system, Derivation of LOS communication range, Over the Horizon microwave systems, Derivation of fields strength of tropospheric waves, Transmission, interference and signal damping, Duct propagation.
Satellite orbits, Satellite location with Synchronous satellites, Satellite location with respect to earth and looks angle, earth coverage and slant range, Eclipse effect, Link calculation, Noise consideration, Factors Affecting satellite communication.