Antennas And Wave Propagation Harish And Sachidananda Pdf Free Download

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Samantha Skufca

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Jul 14, 2024, 2:40:32 AM (3 days ago) Jul 14

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UNIT 1:
Radiation
Potential function and the Electromagnetic field, potential functions for Sinusoidal Oscillations,retarded potential, the Alternating current element (or oscillating Electric Dipole), Powerradiated by a current element, Application to short antennas, Assumed current distribution,Radiation from a Quarter wave monopole or Half wave dipole, sine and cosine integral,Electromagnetic field close to an antenna,Solution of the potential equations, Far-fieldApproximation.

antennas and wave propagation harish and sachidananda pdf free download

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UNIT 5:
Propagation of radio waves
Fundamentals of electromagnetic waves, effects of the environment, modes of propagation.Ground wave propagation- Introduction, plane earth reflection, space wave and surface wave,transition between surface and space wave, tilt of wave front due to ground losses.Space wave propagation- Introduction, field strength relation, effects of imperfect earth,curvature of earth and interference zone, shadowing effect of hills and buildings, absorption byatmospheric phenomena, variation of field strength with height, super refraction, scattering,tropospheric propagation, fading, path loss calculations. Sky wave propagation- Introduction,structural details of the ionosphere, wave propagation mechanism, refraction and reflection ofsky waves by ionosphere, ray path, critical frequency, MUF, LUF, OF, virtual height, skipdistance, relation between MUF and skip distance.

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