Antenna and Wave propagation Premium Lecture Notes, Prepared by Thenmozhi. Specially for Electronics and Communication Engineering. Syllabus Covered based on Anna University B.E Electronics and Communication Engineering.
ANTENNA AND WAVE PROPAGATION
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CONTENT:
UNIT-1
FUNDAMENTALS OF RADIATIONS
UNIT-2
APARTURE AND SLOT ANTANNA
UNIT-3
ANTENNA ARRAY
UNIT-4
SPECIAL ANTENNA
UNIT-5
PROPOGATION OF RADIO WAVES
UNIT-1
FUNDAMENTALS OF RADIATIONS
Radiation from oscillating dipole
Element dipole
Elemental oscillating dipole
Radiation from a half wave dipole
Voltage and current relation of parasitic element
Directivity
Directivity in terms of isotropic antenna
Effective aperture
Antenna noise temperature
Folded dipole
Polaraisation loss factor
UNIT-3
ANTENNA ARRAY
Types
End fire
Broadside array
Direction of pattern maxima
Minor lobe maxima
Minor lobe minima
Beam width of major lobe
End fire array
Pattern maxima
Pattern minima
Pattern multiplication
Binomial array
Phased array
Adaptive array
Types of reflector antenna
Parabolic antenna
UNIT-II
APARTURE AND SLOT ANTANNA
Slot antenna
Horn antenna
Application
Parabolic reflector
Feeding system
Rectangular aperture
Finite word length effect
UNIT-4
SPECIAL ANTENNA
Helical antenna
Modes of operation
Axial mode of operation
Application
Log periodic antenna
Measurement range
UNIT-5
PROPOGATION OF RADIO WAVES
Skywave or ionossphens wave propagation
Space wave propagation
Conduction of current density
Skip distance
Virtual height
Critical frequency
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