MICROWAVE ELECTRONICS-II

Paper Code: 
PHY 424(B)
Credits: 
04
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 
The student will be able to learn construction and working of microwave solid state devices and also about microwave experimentation needed for research and industry.
 
12.00
Unit I: 
Avalanche Transit Time Device

 (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.

13.00
Unit II: 
Microwave Devices

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. 

13.00
Unit III: 
Microwave Antennas

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.

11.00
Unit IV: 
Microwave Communications

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.

11.00
Unit V: 
Satellite Communication

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.

References: 
  1. Electromagnetic & Radiating Systems :  Jordan & Balamin.
  2. Theory and application of microwaves by A.B. Brownwell & R.E. Beam (Mc Graw Hill.)
  3. Introduction to microwave theory by Atwater (Mc Graw Hill).
  4. Microwave by M.L. Sisodia & Vijay laxmi Gupta.
  5. Microwave Electronics by R.F. Soohoo (Addisen Welsey Publ. Comp.).
  6. Foundations of microwave engineering by R.E. Collin. (Mc Graw Hill).
  7. Solid State physical electronics by a. Vanderziel, (PHI India).
  8. Semiconductors & Electronic devices by A. Barlevc (CPHI, India.)
  9. Hand book of microwave measurement Vol-II by M. Sucher & J. Fox (Polytechnic Press, New York).
  10. Microwave device & circuits by S.Y. Liao (HPI, India).
  11. Solid State physical electronics by B G Steelman (PHI, India).
  12. Microwave Principles by H.J. Reich (CBS).
  13. Simple microwave technique for measuring the dielectric parameters of solids & their powder by J.M. Gandhi, J.S. Yadav, J. of pure & applied physics Vol 30, pp-427-431, 1992. 
Academic Year: 
2015-2016
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