080290041 Antenna and Wave Propagation ECE 6th Semester Anna University Coimbatore Syllabus Regulation 2008

Anna university Coimbatore Syllabus

080290041 Antenna and Wave Propagation ECE 6th Semester Anna University Coimbatore Syllabus Regulation 2008

Department of Electronics and Communication Engineering 

Meant for Anna University Coimbatore

Syllabus 

(Regulation 2008/2010)

___________________________________________________________________________________

Details:

University:Anna University

Year: Third Year

Department: B.E Electronics and Communication Engineering 

Semester:  (VI) 

Content: 080290041 Antenna and Wave Propagation ECE 6th Semester Anna University Coimbatore Syllabus Regulation 2008

Post Type: Syllabus

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UNIT I 

RADIATION PROPERTIES                                                                                

Concept of vector potential- Modification for time varying- retarded case- Fields associated with Hertzian dipole- Power radiated and radiation resistance of current element-Radiation from half-wave dipole and quarter-wave monopole antennas. Radiation intensity- Directive gain- Directivity- Power gain- Beam Width- Band Width- Gain  -Quarter  wave  monopole-Half-wave  dipole  and  folded  dipole-  Reciprocity principle- Effective length and Effective area- Relation between gain effective length and radiation resistance.

UNIT II   ANTENNA ARRAYS                                                                                

Antenna Arrays: Expression for electric field from two, three and N element arrays- linear arrays: Broad-side array and End-Fire array- Method of pattern multiplication- Binomial array- Horizontal and Vertical Antennas above the ground plane, Phased arrays, Frequency-Scanning arrays- Adaptive arrays and Smart antennas.

UNIT III   ANTENNA TYPES                                                                                     

Loop Antennas: Radiation from small loop and its radiation resistance- Radiation from a loop with circumference equal to a wavelength-Helical antenna: Normal mode and axial mode operation-Yagi uda Antenna- Log periodic antenna- Phased array- rhombic antenna- Horn antenna- Reflector antennas and their feed systems- Micro strip antenna-Selection of antenna based on frequency of operation – Antennas for special applications: Antenna for terrestrial mobile communication systems, GPR, Embedded antennas, UWB, Plasma antenna.

UNIT IV   WAVE PROPAGATION                                                                            

Ground wave propagation: Attenuation characteristics for ground wave propagation- Calculation of field strength at a distance - Space wave propagation: Reflection from ground for vertically and horizontally polarized waves- Reflection characteristics of earth- Resultant of direct and reflected ray at the receiver- Duct propagation - Sky wave propagation: Structure of the ionosphere- Effective dielectric constant of ionized region- Mechanism of refraction- Refractive index- Critical frequency- Skip distance- Effect of earth’s magnetic field- Attenuation factor for ionospheric propagation- Maximum usable frequency- Fading and Diversity reception.

UNIT V        

ANTENNA AND IONOSPHERIC MEASUREMENTS                 

Antenna Measurements:Reciprocity in Antenna measurements – Near-field and Far- field - Measurements ranges - Measurement of different Antenna parameters- Directional pattern, Gain, Phase, Polarization, Impedance, Efficiency.

Ionosphere Measurements:Measurement of vertical Incidence- Group Velocity and

Group Delay- Relation between oblique and vertical Incidence transmission.

TOTAL: 45

TUTORIAL : 15

TEXT BOOKS:

1.  John  D-Kraus  and  Ronalatory  Marhefka-  "Antennas"-  Tata  McGraw-Hill  Book

Company- 2002-

2.  E-C-Jordan and Balmain- "Electro Magnetic Waves and Radiating Systems"- PHI-

1968- Reprint 2003-

REFERENCES:

3.  R-E-Collins- 'Antennas and Radio Propagation "- McGraw-Hill- 1987-

4.  Ballanis "Antenna Theory " - John Wiley & Sons- second edition – 2003

5.  D.Ganesh rao, B.Somanathan nair, Deepa Reghunath- “Antennas and Radio-Wave

Propagation”, Sanguine technical publishers, Bangalore- 2007.

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