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Electronics & Communication Engineering
Advanced Antenna Theory (Web)
Syllabus
Co-ordinated by :
IIT Roorkee
Available from :
2015-04-06
Lec :
1
Modules / Lectures
Fundamental Concepts
Introduction, Types of antennas
Radiation mechanism, Poynting vector, Steradian concept, Power intensity
Antenna Parameters: Radiated power, Radiation pattern, Field regions
Antenna Parameters: Directivity, Gain, Antenna polarization
Antenna Parameters: Axial ratio, Input impedance, Reflection coefficient, Return loss, VSWR
Antenna Parameters: Impedance bandwidth, Effective aperture; Communication link and Friis transmission equation
Radiation integrals and Auxiliary Potential Functions (Part-1)
Radiation integrals and Auxiliary Potential Functions (Part-2)
Radiation from wires and loops
Introduction, Infinitesimal dipole
Infinitesimal dipole: Radiation zones, Total radiated power, Radiation resistance, Directivity, Effective area
Short dipole
Finite-length dipole
Finite-length dipole: Radiated power, Radiation resistance, Directivity, Effective area
Half-wave dipole and its properties
Loop antenna
Aperture Antennas
Introduction, Field equivalence principle
Love’s equivalence principle, Electrical and magnetic conductor equivalence principle
Computation of field quantities of aperture antenna
Relation between wire and aperture antennas, Horn antenna design principle
Broadband Antennas
Introduction, Principle of frequency-independent antenna
Examples of frequency-independent antennas
Log-periodic antenna concept and examples
Microstrip Antennas
Introduction, Advantages and disadvantages, Microstrip antenna configurations
Excitation techniques, Criteria for substrate selection, Radiation mechanism
Methods of analysis, Transmission line model: Part -1
Transmission line model: Part -2
Cavity model: Part-1
Cavity model: Part-2
Antenna Arrays
Introduction, Two-element array
Example problems, Pattern multiplication concept
N-element array, Uniform array , Array factor
Broad-side and end-fire arrays, Phased array
Directivity and pattern characteristic of linear uniform array
Non-uniform array, Binomial array
Dolph-Chebyshev array concept
Design principle of Chebyshev array and examples
Planar arrays
Basic Concepts of Smart Antennas
Introduction, Need of smart antenna system, Overview of smart antenna system
Types of smart antennas, Switched beam system, Adaptive system
Beam forming, Fixed weight beam forming: Maximum signal-to-interference ratio beam-former
Minimum mean square error
Adaptive beam forming: LMS algorithm
Sample matrix inversion method
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