8/4/2019 Antenna & Radio Wave Propagation

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C 307RADIO WAVE PROPAGATION&ANTENNA

Theory: 2 hrs/WeekTutorial: -hrs/Week

Year: Third

Antenna (One term)

.hrs4:Electromagnetic Fundamentals)1

Time-varying electromagnetic field equation; non-homogeneous wave equation;

Boundary

condition; Poynting's theorem; or power equation; Solution of maxwell's equations

for radiation problems; field regions; Lorentz reciprocity theorem; Ideal

(infinitesimal) electrical dipole.

.hrs8:Antenna ConceptsBasic)2

Frequency of operation; Radiation pattern and it's parameters; Beam area( beam

solid angle); Effective height; Aperture concept; Antenna polarization; Antennas in

communication links and radar; Antenna noise temperature; Receiving properties of

antennas; Antenna parameters measurement, Field intensity measurements.

.hrs8:Arrays)3

Linear arrays of n isotropic point sources of unequal amplitude and spacing; Linear

arrays of n isotropic point sources of equal amplitude and spacing; Broadside array;

End-fire array; Main beam scanning array Linear arrays of n dipole sources of equal

amplitude and spacing; Pattern Multiplication; Directivity, Gain and Beam width of

an array.

.hrs6:Practical Examples of Antennas)4Small loop antenna; Traveling-wave antennas; Helical antennas; Log-periodic

antenna; Yagi-Uda antennas; Reflector antennas; micro-strip antennas

.hrs4:SittingAntenna)5

Antenna sitting and the effect of perfect ground.

Radio wave propagation (One term)

.hrs8:The Propagation Media)1

The atmosphere; the structure of the atmospheric layers; Electromagnetic propertiesof the layers.

.hrs2:Mode of Wave Propagation)2

Mode of radio wave propagation in communication and radar systems.

.hrs4:tionGround Wave Propaga)3

Ground parameters; propagation equation; propagation problems; applications.

.hrs8:Ionosphere Wave Propagation)4

D-layer attenuation; ionosphere reflective index; Snell's law of refraction; effect of

earth's magnetic field; regular variations of the ionosphere; critical frequency;

maximum usable frequency; virtual height; launch angle; ionosonds; maximum usable

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frequency factor; optimum working frequency; irregular variations of the ionosphere,

fading, HF antennas.

.hrs6:Space Wave Propagation in the Troposphere)5

Effect of earth's curvature reflection; diffraction and atmospheric effects in space

wave propagation; super-refraction; fading; Line-of- side(LOS); Fresnel zone; Radio

Relay Links(RRL).

.hrs2:Scatter Propagation)6

Troposphere scatter radio links; ionoscatter and meteor scatter radio systems;

propagation equations.

Recommended textbook:"

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