Antenna and Wave Propagation online videos

Overview

  • Units 10
  • Duration 12:16:05
  • Branch ECE/EEE
  • Language English
Course Description

The course gives an awareness of antenna parameter considerations and analysis of the designed antenna with field evaluations for various conditions.

Recommended For

B.E/B.Tech Electronics and Communication Engineering

University

Learning Outcomes
    • Aware of parameter considerations viz. antenna efficiency, beam efficiency, radiation resistance, etc. in the design of an antenna.
    • Capable of analyzing the designed antenna and field evaluation under various conditions and formulate the electric as well as the magnetic fields equation set for far-field and near field conditions.
    • Understand the Array system of different antennas and field analysis under application of different currents to the individual antenna elements.
    • Understand the design issues, operation of fundamental antennas like Yagi-Uda, Horn antennas, and helical structure, and also their operation methodology in practice.
    • Design a lens structure and also the bench step for antenna parameter measurement of testing for their effectiveness.
    • Knowledge about the means of propagation of Electromagnetic waves i.e. free space propagation and also about frequency-dependent layer selection, its respective issues for effective transmission of information in the form of EM waves to a remote location, and related issues.

Curriculum

    • UNIT 1 AWP introduction: Subject Introduction- part 1, Subject Introduction- part 2, Subject Introduction- part 3, Unit Introduction
       0:26:13
    • UNIT 1.1 Antenna Basics: Introduction, Radition Pattern, Beam Area, Radiation Intensity, Beam Effeciency, Directivity Gain-Resolution, Antenna Apertures, Effective Height, Fields from Oscillating Dipole & Front to back Ratio, Field Zones, Antenna Theorems & Radiation, Illustrative Problems & Retarded Potentials - Helmholtz Theorem- part 1, Illustrative Problems & Retarded Potentials - Helmholtz Theorem- part 2
       1:10:50
    • UNIT 1.2 Thin Linear Wire Antennas: Introduction, Electric Dipole & its Current Distribution, Quarter Wave Monopole & Current Distribution, Half Wave Dipole & Current Distribution, Field Components- part 1, Field Components- part 2, Radiation Resistance, Beamwidth, Directivity effective area & height, Natural Current Distributions of TLWA, Far Fields & Patterns of TLCFA of different lengths, Illustrative Problems, Loop Antennas - Introduction, Comparision of Far Fields of Small loop and short dipole, Radiation Resistances & Directivities of Small & Large Loop (Qualitative Treatment)
       1:22:06
    • UNIT 2 VHF, UHF & Microwave Antennas - 1: Arrays with parasitic elements, Yagi-Uda Array - part 1, Yagi-Uda Array - part 2, Yagi-Uda Array - part 3, Folded Dipoles & their Characteristics, Helical Antenna & Helical Geometry, Helix Modes, Practical Design Considerations for Monofilar Helical Antenna in Axial Modes - part 1, Normal Modes, Horn Antennas & Types - part 1, Horn Antennas & Types - part 2, Fermat's Principle, Optimum Horns & Design Considerations of Pyramidal Horns, Illustrative Problems 1, Illustrative Problems 2
       1:43:21
    • UNIT 3.1 VHF, UHF & Microwave Antennas - 2: Microstrip Antennas - Introduction, Features, Advantages & Limitations, Rectangular Patch Antennas, Characteristics of Microstrip Antennas, Impact of Different Parameters on Characteristics, Reflector Antennas - Introduction - part 1, Reflector Antennas - Introduction - part 2, Reflector Antennas - Introduction - part 3, Flar Sheet & Corner Reflectors, Paraboloidal Reflectors & Geometry, Pattern Characteristics, Reflector Types - Related Features
       1:19:44
    • UNIT 3.2 Lens Antennas: Introduction, Geometry of Non-Metallic Dielectric Lenses, Zoning, Tolerances, Applications & Illustrative Problems
       0:20:53
    • UNIT 4.1.1 Antenna Arrays: Point Sources - Definition, Patterns, Arrays of 2 Isotropic Sources & Different Cases - part 1, Arrays of 2 Isotropic Sources & Different Cases - part 2, Principles of Pattern Multiplication, Uniform Linear Arrays, Broadside Arrays, Endfire Arrays, EFA with Increased Directivity, Derivation of their Characteristics & Comparision, BSAs with Non-uniform Amplitude Distributions & General Considerations & Binomial Arrays, Illustrative Problems
       1:28:28
    • UNIT 4.2 Antenna Measurements: Introduction & Concepts & Reciprocity & Near & Far Fields, Coordinate System, Sources of Errors, Patterns to be Measured, Pattern Measurement Arrangement, Directivity Measurement, Gain Measurements (By Comparision, Absolute & 3-Antenna Methods)- part 1, Gain Measurements (By Comparision, Absolute & 3-Antenna Methods)- part 2
       1:08:16
    • UNIT 5.1 Wave Propagation - 1: Categorizations & General Classifications, Different Modes of Wave Propagation, Ray & Mode Concepts, Ground Wave Propagation (Qualitative Treatment) - Introduction, Waves Tilt, Curved Earth Reflections - part 1, Curved Earth Reflections - part 2, Space Wave Propagation - Introduction, Field Strength Variation with Distance & Height, Effect of Earth's Curvature, Absorption, Super Refraction & M-Curves & Duct Propagation - part 1, Super Refraction & M-Curves & Duct Propagation - part 2, Scattering Phenomena & Tropospheric Propagation
       1:17:40
    • UNIT 5.2 Wave Propagation - 2: Structure of Ionosphere, Refraction & Reflection of Sky Waves by Ionosphere - part 1, Refraction & Reflection of Sky Waves by Ionosphere - part 2, Refraction & Reflection of Sky Waves by Ionosphere - part 3, Critical Frequency - CF & Maximum Usable Frequency - MUF - part 1, Critical Frequency - CF & Maximum Usable Frequency - MUF - part 2, Optimum Working Frequency - OF, Lowest Usable Frequency - LUF, Multi-hop Propagation
       1:17:37

Instructor

Mr. V. Rama Krishna Sharma M.Tech, (Ph. D)

Rama Krishna is currently working as an associate professor in the Department of Electronics & Communications Engineering at Sreenidhi Institute of Science & Technology, Ghatkesar, Hyderabad. He has more than a decade of teaching experience. He holds a master's degree in the specialization of Wireless Communications and also in the pursuit of a Doctorate in the area of Communications Engineering. He delivered several guest lectures in reputed engineering colleges. He is a member of the International Association of Engineers (Hong Kong) and also a life member of the Indian Society of Technical Education.