Page 62 - R2017-REC-ECE-UG Syllabus

Department of ECE, REC

2.Wayne Wolf, ―Modern VLSI Design: System On Chipǁ, Pearson Education, 2007.
3.R.Jacob Baker, Harry W.LI., David E.Boyee, ―CMOS Circuit Design, Layout and Simulationǁ, Prentice
Hall of India 2005.

EC17602 ANTENNAS AND WAVE PROPAGATION L T P C
3 0 0 3

PREREQUISITE: Knowledge on Electromagnetic Fields

OBJECTIVES:
• To give insight of the radiation parameters
• To apply array theory on antennas
• To give a thorough understanding of the radiation characteristics of practical antennas
• To learn frequency independent antennas and measurement of antenna parameters
• To create awareness about the different types of propagation of radio waves at different frequencies

UNIT I FUNDAMENTALS OF RADIATION 9
Definition of antenna parameters: Radiation pattern – Radiation pattern lobes, Isotropic, Directional and
Omnidirectional patterns, Field region, Radian and steradian. Radiation power density, Radiation intensity,
Beamwidth, Directivity, Antenna efficiency, Gain, Beam efficiency, Polarization – Polarization loss factor
and efficiency, Input Impedance, Effective aperture, Radiation Resistance, Band width. Radiation from
oscillating dipole, Power radiated by a current element.

UNIT II ANTENNA ARRAYS 9
Various forms of antenna array, N element linear array, Pattern multiplication, Broadside and End fire array -
Phased arrays, Adaptive array and Smart antennas, Binomial array.

UNIT III PRACTICAL ANTENNAS 9
Half wave length dipole, Folded dipole, Yagi Uda antenna, Slot antenna, Microstrip antenna, Parabolic
reflectors and its feeding system, Horn antenna.

UNIT IV SPECIAL ANTENNAS AND MEASUREMENTS 9
Principle of frequency independent antennas -Spiral antenna, Helical antenna, Log periodic. Modern antennas-
Reconfigurable antenna, Active antenna. Antenna Measurements-Test Ranges, Measurement of Gain,
Radiation pattern, Polarization, VSWR.

UNIT V PROPAGATION OF RADIO WAVES 9
Ground wave propagation – Plane earth reflection. Space wave propagation – Field strength relation, Super
Refraction, Scattering phenomena, fading. Sky wave propagation – Structural details of the Ionosphere, Ray
path, critical frequency, MUF, LUF, OF, Virtual height, Skip distance.

TOTAL=45 PERIODS

OUTCOMES:
Upon completion of the course, students will be able to:
• Write about the radiation from a current element.
• Analyze the antenna arrays.
• Explain the various types of antennas.

Curriculum and Syllabus | B.E. Electronics and Communication Engineering | R2017 Page 62