JNTUK R20 3-1 Power Electronics Material/Notes PDF Download

Students those who are studying JNTUK R20 EEE Branch, Can Download Unit wise R20 3-1 Power Electronics Material/Notes PDFs below.

JNTUK R20 3-1 Power Electronics Material/Notes PDF Download

Preamble: The usage of power electronics in day to day life has increased in recent years. It is important for student to understand the fundamental principles behind all these converters. This course covers characteristics of semiconductor devices, ac/dc, dc/dc, ac/ac and dc/ac converters. The importance of using pulse width modulated techniques to obtain high quality power supply (dc/ac converter) is also discussed in detail in this course.

OBJECTIVES:

• To study the characteristics of various power semiconductor devices and to design firing circuits for SCR.
• To understand the operation of single phase full–wave converters and analyze harmonics in the input current.
• To study the operation of three phase full–wave converters.
• To understand the operation of different types of DC-DC converters.
• To understand the operation of inverters and application of PWM techniques for voltage control and harmonic mitigation.
• To analyze the operation of AC-AC regulators.

UNIT-1

Power Semi-Conductor Devices Silicon controlled rectifier (SCR) – Two transistor analogy – Static and Dynamic characteristics – Turn on and Turn off Methods – Triggering Methods (R, RC and UJT) – Snubber circuit design. Static and Dynamic Characteristics of Power MOSFET and Power IGBT– Gate Driver Circuits for Power MOSFET and IGBT – Numerical problems.

Download UNIT-1 Material PDF | Reference-2 | Ref-3

UNIT–2:

Single Phase AC-DC Converters Single Phase half wave controlled rectifiers – R load and RL load with and without freewheeling diode – Single Phase fully controlled bridge converter with R load, RL load and RLE load – Continuous and Discontinuous conduction – Effect of source inductance in 1-phase fully controlled bridge rectifier with continuous conduction – Expression for output voltages – Single Phase semi Converter with R load, RL load and RLE load – Continuous and Discontinuous conduction – Harmonic Analysis – Single Phase Dual Converters – Numerical Problems

Download UNIT-2 Material PDF | Reference-2

UNIT–3

Three Phase AC-DC Converters & AC – AC Converters

Three-phase half-wave Rectifier with R and RL load – Three-phase fully controlled rectifier with R and RL load – Three-phase semi converter with R and RL load – Expression for Output Voltage – Harmonic Analysis – Three-phase Dual Converters – Numerical Problems.

Download UNIT-3 PART-A Material PDF | Reference-2 | Ref-3

Single-phase AC-AC power control by phase control with R and RL loads – Expression for rms output voltage – Single-phase step down and step up Cycloconverter – Numerical Problems.

Download UNIT-3 PART-B Material PDF | Reference-2

UNIT–4:

DC–DC Converters Operation of Basic Chopper – Classification – Control Techniques – Analysis of Buck, Boost and Buck-Boost converters in Continuous Conduction Mode (CCM) and Discontinuous Conduction Modes (DCM) – Output voltage equations using volt-sec balance in CCM & DCM – Expressions for output voltage ripple and inductor current ripple- Numerical Problems.

Download UNIT-4 Material PDF | Reference-2

UNIT-5:

DC–AC Converters Introduction – Classification – Single Phase half bridge and full bridge inverters with R and RL loads – Unipolar & Bipolar Switching – Quasi-square wave pulse width modulation – Three Phase square wave inverters – 1200 conduction and 1800 conduction modes of operation – PWM inverters – Sinusoidal Pulse Width Modulation – Current Source Inverter (CSI) – Numerical Problems.

Download UNIT-5 Material PDF

TEXT BOOKS:

1. Power Electronics: Converters, Applications and Design by Ned Mohan, Tore M Undeland, William P Robbins, John Wiley & Sons.
2. Power Electronics: Circuits, Devices and Applications – by M. H. Rashid, Prentice Hall of India, 2nd edition, 1998
3. Power Electronics: Essentials & Applications by L.Umanand, Wiley, Pvt. Limited, India, 2009.

REFERENCE BOOKS:

1. Elements of Power Electronics–Philip T.Krein.oxford.
2. Power Electronics – by P.S.Bhimbra, Khanna Publishers.
3. Thyristorised Power Controllers – by G. K. Dubey, S. R. Doradla, A. Joshi and R. M. K.Sinha, New Age International (P) Limited Publishers, 1996.
4. Power Electronics: by Daniel W.Hart, Mc Graw Hill.

OUTCOMES:

• Explain the characteristics of various power semiconductor devices and analyze the static and dynamic characteristics of SCR’s.
• Design firing circuits for SCR.
• Explain the operation of single phase full–wave converters and analyze harmonics in the input current.
• Explain the operation of three phase full–wave converters.
• Analyze the operation of different types of DC-DC converters.
• Explain the operation of inverters and application of PWM techniques for voltage control and harmonic mitigation.
• Analyze the operation of AC-AC regulators.

JNTUK R20 3-1 Power Systems-II Material/Notes PDF Download

Students those who are studying JNTUK R20 EEE Branch, Can Download Unit wise R20 3-1 Power Systems-II (PS-2) Material/Notes PDFs below.

JNTUK R20 3-1 Power Systems-II Material/Notes PDF Download

Preamble: This course is an extension of power systems–I course. It deals with basic theory of transmission lines modeling and their performance analysis. Transient in power system, improvement of power factor and voltage control are discussed in detail. It is important for the student to understand the mechanical design aspects of transmission lines, cables, insulators. These aspects are also covered in detail in this course.

OBJECTIVES:

• To compute inductance/capacitance of transmission lines and to understand the concepts of GMD/GMR.
• To study the short and medium length transmission lines, their models and performance.
• To study the performance and modeling of long transmission lines.
• To study the effect of travelling waves on transmission lines.
• To study the factors affecting the performance of transmission lines and power factor improvement methods.
• To discuss sag and tension computation of transmission lines as well as to study the performance of overhead insulators.

Transmission Line Parameters Conductor materials – Types of conductors – Calculation of resistance for solid conductors – Skin and Proximity effects – Calculation of inductance for Single-phase and Three-phase– Single and double circuit lines– Concept of GMR and GMD–Symmetrical and asymmetrical conductor configuration with and without transposition–Bundled conductors – Calculation of capacitance for 2 wire and 3 wire systems – Effect of ground on capacitance – Capacitance calculations for symmetrical and asymmetrical single and Three-phase–Single and double circuit lines without and with Bundled conductors.

Download UNIT-1 Material PDF | Reference-2 | Ref-3

UNIT–2

Performance Analysis of Transmission Lines Classification of Transmission Lines – Short, medium, long lines and their model representation – Nominal-T, Nominal-Pie and A, B, C, D Constants for symmetrical and Asymmetrical Networks.

Rigorous Solution for long line equations –Representation of Long lines – Equivalent T and Equivalent Pie network models – Surge Impedance and Surge Impedance Loading (SIL) of Long Lines – Regulation and efficiency for all types of lines – Ferranti effect.

Download UNIT-2 PART Material PDF | Reference-2 | Ref-3

UNIT–3

Power System Transients Types of System Transients – Propagation of Surges – Attenuation–Distortion– Reflection and Refraction Coefficients. Termination of lines with different types of conditions – Open Circuited Line–Short Circuited Line – TJunction – Lumped Reactive Junctions.

Download UNIT-3 Material PDF | Reference-2

UNIT–4

Corona Description of the phenomenon – Types of Corona – critical voltages and power loss – Advantages and Disadvantages of Corona – Factors affecting corona – Radio Interference.

Download UNIT-4 Material PDF

UNIT–5

Sag and Tension Calculations and Overhead Line Insulators: Sag and Tension calculations with equal and unequal heights of towers–Effect of Wind and Ice on weight of Conductor – Stringing chart and sag template and its applications Types of Insulators – String efficiency and Methods for improvement – Voltage distribution–Calculation of string efficiency – Capacitance grading and Static Shielding.

Download UNIT-5 Material PDF | Reference-2

TEXT BOOKS:

1. Electrical Power Systems – by C.L.Wadhwa, New Age International (P) Limited, 1998.
2. Power System Engineering by I.J.Nagarath and D.P.Kothari, Tata McGraw Hill, 3 rd Edition.

REFERENCE BOOKS:

1. Power system Analysis–by John J Grainger William D Stevenson, TMC Companies, 4th edition
2. Power System Analysis and Design by B.R.Gupta, Wheeler Publishing.
3. A Text Book on Power System Engineering by M.L.Soni, P.V.Gupta, U.S.Bhatnagar A.Chakrabarthy, DhanpatRai Co Pvt. Ltd.2016
4. Electrical Power Systems by P.S.R. Murthy, B.S. Publications, 2017

OUTCOMES:

• Calculate parameters of transmission lines for different circuit configurations.
• Determine the performance of short, medium and long transmission lines.
• Analyse the effect of travelling waves on transmission lines.
• Analyse the various voltage control methods and effect of corona.
• Calculate sag/tension of transmission lines and performance of line insulators.

JNTUK R20 3-1 Finite Element Methods (FEM) Material PDF Download

Students those who are studying JNTUK R20 Mechanical Branch, Can Download Unit wise R20 3-1 Finite Element Methods (FEM) Material/Notes PDFs below.

JNTUK R20 3-1 Finite Element Methods (FEM) Material PDF Download

OBJECTIVES:

• To understand the basic principles of finite element methods.
• To understand discretization principles and apply to analyse the trusses.
• To apply the finite element method to analyze and solve beam problems.
• To gain knowledge about two dimensional stress analysis.
• To understand and apply steady state analysis and dynamic analysis.

UNIT-1

Finite Element Methods: Introduction to finite element method, stress and equilibrium, strain – displacement relations, stress–strain relations, plane stress and plane strain conditions, variational and weighted residual methods, concept of potential energy, one dimensional problems.

Download UNIT-1 Material PDF

UNIT-2

Discretization: Bar element formulation, Discretization of domain, element shapes, discretization procedures, assembly of stiffness matrix, band width, node numbering, mesh generation, interpolation functions, local and global coordinates, convergence requirements, treatment of boundary conditions.

Analysis of Trusses: Finite element modeling, coordinates and shape functions, assembly of global stiffness matrix and load vector, finite element equations, treatment of boundary conditions, stress, strain and support reaction calculations

Download UNIT-2 Material PDF

UNIT-3

Analysis of Beams: Element stiffness matrix for Hermite beam element, derivation of load vector for concentrated and UDL, simple problems on beams.

Download UNIT-3 Material PDF | Reference-2

UNIT-4

Finite element modeling: Finite element modeling of two dimensional stress analysis with constant strain triangles and treatment of boundary conditions, formulation of axi-symmetric problems.

Higher order and iso-parametric elements: One dimensional, quadratic and cubic elements in natural coordinates, two dimensional four node iso-parametric elements and numerical integration.

Download UNIT-4 Material PDF | Reference-2

UNIT-5

Steady state heat transfer analysis: One dimensional analysis of a fin.

Dynamic Analysis: Formulation of finite element model, element consistent and lumped mass matrices, evaluation of eigen values and eigen vectors, free vibration analysis.

Download UNIT-5 Material PDF | Reference-2

TEXT BOOKS:

1. The Finite Element Methods in Engineering / SS Rao / Pergamon.

REFERENCE BOOKS:

1. Finite Element Method with applications in Engineering / YM Desai, Eldho & Shah /Pearson publishers
2. An introduction to Finite Element Method / JN Reddy / McGraw Hill
3. The Finite Element Method for Engineers – Kenneth H. Huebner, Donald L. Dewhirst, Douglas E. Smith and Ted G. Byrom / John Wiley & sons (ASIA) Pte Ltd.
4. Finite Element Analysis: Theory and Application with Ansys, Saeed Moaveniu, Pearson Education
5. Finite Element Methods / Chen
6. Finite Element Analysis: for students & Practicing Engineers / G.Lakshmi Narasaiah / BSP Books Pvt. Ltd.

OUTCOMES:

• Understand the concepts behind variational methods and weighted residual methods in FEM
• Identify the application and characteristics of FEA elements such as bars, beams, plane and isoparametric elements, and 3-D element .
• Develop element characteristic equation procedure and generation of global stiffness equation will be applied.
• Able to apply Suitable boundary conditions to a global structural equation, and reduce it to a solvable form.
• Able to identify how the finite element method expands beyond the structural domain, for problems involving dynamics, heat transfer, and fluid flow.

JNTUK R20 3-1 Operations Research Material/Notes PDF Download

Students those who are studying JNTUK R20 Mechanical Branch, Can Download Unit wise R20 3-1 Operations Research (OR) Material/Notes PDFs below.

JNTUK R20 3-1 Operations Research Material/Notes PDF Download

OBJECTIVES:

• To understand the basics of operations research, applications and linear programming problems.
• To understand and apply the knowledge in solving problems of transportation, assignment and sequencing.
• To understand the replacement and game theories and apply the knowledge to solve problems.
• To gain knowledge about the waiting line models and project management techniques.
• To understand and apply the knowledge in solving problems of dynamic programming and simulation.

UNIT-1

INTRODUCTION – definition– characteristics and phases – types of operation research models – applications.

LINEAR PROGRAMMING: problem formulation – graphical solution – simplex method – artificial variables techniques -two–phase method, big-M method – duality principle.

Download UNIT-1 Material PDF | Reference-2

UNIT-2

TRANSPORTATION PROBLEM: Formulation – optimal solution, unbalanced transportation problem – degeneracy, assignment problem – formulation – optimal solution – variants of assignment problem- traveling salesman problem.

SEQUENCING – Introduction – flow –shop sequencing – n jobs through two machines – n jobs through three machines – job shop sequencing – two jobs through ‘m’ machines.

Download UNIT-2 Material PDF | Reference-2

UNIT-3

REPLACEMENT THEORY: Introduction – replacement of items that deteriorate with time – when money value is not counted and counted – replacement of items that fail completely, group replacement.

GAME THEORY: Introduction – mini. max (max. mini) – criterion and optimal strategy – solution of games with saddle points – rectangular games without saddle points – 2 x 2 games – dominance principle – m x 2 & 2 x n games -graphical method.

Download UNIT-3 Material PDF | Reference-2

UNIT-4

WAITING LINES: Introduction – single channel – poison arrivals – exponential service times – with infinite population and finite population models– multichannel – poison arrivals – exponential service times with infinite population single channel.

PROJECT MANAGEMENT: Basics for construction of network diagram, Program Evaluation and Review Technique (PERT), Critical Path Method (CPM) – PERT Vs. CPM, determination of floats- Project crashing and its procedure.

Download UNIT-4 Material PDF

UNIT-5

DYNAMIC PROGRAMMING: Introduction – Bellman’s principle of optimality – applications of dynamic programming-shortest path problem – linear programming problem.

Download UNIT-5 Part-A Material PDF

SIMULATION: Definition – types of simulation models – phases of simulation– applications of simulation – inventory and queuing problems – advantages and disadvantages.

Download UNIT-5 Part-B Material PDF

TEXT BOOKS:

1. Operations Research-An Introduction/Hamdy A Taha/Pearson publishers
2. Operations Research –Theory & publications / S.D.Sharma-Kedarnath/McMillan publishers India Ltd

REFERENCE BOOKS:

1. Introduction to O.R/Hiller & Libermann/TMH
2. Operations Research /A.M.Natarajan,P.Balasubramani,A. Tamilarasi/Pearson Education.
3. Operations Research: Methods & Problems / Maurice Saseini, Arhur Yaspan & Lawrence Friedman/Wiley
4. Operations Research / R.Pannerselvam/ PHI Publications.
5. Operations Research / Wagner/ PHI Publications.
6. Operation Research /J.K.Sharma/MacMilan Publ.
7. Operations Research/ Pai/ Oxford Publications
8. Operations Research/S Kalavathy / Vikas Publishers
9. Operations Research / DS Cheema/University Science Press
10. Operations Research / Ravindran, Philips, Solberg / Wiley publishers

OUTCOMES: After completion of the course, the student will be able to:

• CO1: Apply the basics of operations research and linear programming problems.
• CO2: Apply the knowledge in solving problems of transportation, assignment and sequencing.
• CO3: Judge the replacement and game theories and apply the knowledge to solve problems.
• CO4: Discuss the waiting line models and project management techniques.
• CO5: Apply the knowledge in solving problems of dynamic programming and simulation.

JNTUK R20 3-1 Machining, Machine Tools & Metrology Material PDF Download

Students those who are studying JNTUK R20 Mechanical Branch, Can Download Unit wise R20 3-1 Machining, Machine Tools & Metrology (MMT&M) Material/Notes PDFs below.

JNTUK R20 3-1 Machining, Machine Tools & Metrology Material PDF Download

OBJECTIVES:

• The course provides students with fundamental knowledge and principles in material removal processes.
• In this course, the students apply the fundamentals and principles of metal cutting to practical applications through multiple labs using lathes, milling machines, grinding machines, and drill presses, Computer Numerical Control etc
• To demonstrate the fundamentals of machining processes and machine tools.
• To develop knowledge and importance of metal cutting parameters.
• To develop fundamental knowledge on tool materials, cutting fluids and tool wear mechanisms.
• To apply knowledge of basic mathematics to calculate the machining parameters for different machining processes.

UNIT-1

FUNDAMENTAL OF MACHINING: Elementary treatment of metal cutting theory – element of cutting process – Single point cutting tools, nomenclature of single point cutting tool, tool signature, tool angles, mechanism of metal cutting, types of chips and chip formation – built up edge and its effects, chip breakers, mechanics of orthogonal and oblique cutting –Merchant’s force diagram, cutting forces, velocity ratio, cutting speeds, feed, depth of cut, tool life, Taylor’s tool life equation, simple problems – Tool wear, tool wear mechanisms, heat generation in metal cutting, coolants, machinability, economics of machining, tool materials and properties.

Download UNIT-1 Material PDF

UNIT-2

LATHE MACHINES: Introduction- types of lathe – Engine lathe – principle of working – construction – specification of lathe – work holders and tool holders – accessories and attachments – lathe operations – taper turning methods and thread cutting – drilling on lathes – cutting speed and feed-depth of cut.

SHAPING, SLOTTING AND PLANNING MACHINES: Introduction – principle of working – principle parts – specifications – operations performed – slider crank mechanism – machining time calculations.

Download UNIT-2 Material PDF

UNIT-3

DRILLING & BORING MACHINES: Introduction – construction of drilling machines – types of drilling machines – principles of working – specifications- types of drills – geometry of twist drill – operations performed –cutting speed and feed – machining time calculations – Boring Machines – fine Boring Machines – jig boring machines – deep hole Drilling Machines.

MILLING MACHINES: Introduction – principle of working – specifications – milling methods – classification of Milling Machines –types of cutters – geometry of milling cutters – methods of indexing, accessories to milling machines – cutting speed and feed – machining time calculations

Download UNIT-3 Material PDF

UNIT-4

FINISHING PROCESSES: Introduction – theory of grinding – classification of grinding machines- cylindrical and surface grinding machines- tool and cutter grinding machines- different types of abrasives- bonds, specification and selection of a grinding wheel-lapping, Honing & Broaching operations- comparison to grinding.

SYSTEMS OF LIMITS AND FITS: Introduction, nominal size, tolerance, limits, deviations, different types of fits -Unilateral and bilateral tolerance system, hole and shaft basis systemsinterchangeability, deterministic & statistical tolerances, selective assembly- International standard system of tolerances, selection of limits and tolerances for correct functioning, simple problems related to limits and fits, Taylor’s principle – design of go and no go gauges; plug, ring, snap, gap, taper, profile and position gauges – inspection of gauges.

Download UNIT-4 Material PDF

UNIT-5

SURFACE ROUGHNESS MEASUREMENT: Differences between surface roughness and surface waviness –Numerical assessment of surface finish-CLA, Rt., R.M.S. Rz, R10 values, simple problems – method of measurement of surface finish – Profilograph, Talysurf, ISI symbols for indication of surface finish.

OPTICAL MEASURING INSTRUMENTS: Tools maker’s microscope, Autocollimators, Optical projector, Optical flats-working principle, construction, merits, demerits and their uses. optical comparators.

Download UNIT-5 Material PDF

TEXT BOOKS:

1. Manufacturing Processes / JP Kaushish/ PHI Publishers-2 nd Edition
2. Manufacturing Technology Vol-II/P.N Rao/Tata McGraw Hill
3. Engineering Metrology – R.K. Jain/Khanna Publishers

REFERENCE BOOKS:

1. Metal cutting and machine tools /Geoffrey Boothroyd, Winston A.Knight/ Taylor & Francis
2. Production Technology / H.M.T. Hand Book (Hindustan Machine Tools).
3. Production Engineering/K.C Jain & A.K Chitaley/PHI Publishers
4. Technology of machine tools/S.F.Krar, A.R. Gill, Peter SMID/ TMH
5. Manufacturing Processes for Engineering Materials-Kalpak Jian S & Steven R Schmid/Pearson Publications 5 th Edition

OUTCOMES:

• CO1: Discuss the concepts of machining processes.
• CO2: Apply the principles of lathe, shaping, slotting and planning machines.
• CO3: Apply the principles of drilling, milling and boring processes.
• CO4: Analyze the concepts of finishing processes and the system of limits and fits.
• CO5: Learn the concepts of surface roughness and optical measuring instruments.

JNTUK R20 3-1 DMM-1 Material/Notes PDF Download

Students those who are studying JNTUK R20 Mechanical Branch, Can Download Unit wise R20 3-1 Design of Machine Members-I (DMM-I) Material/Notes PDFs below.

JNTUK R20 3-1 DMM-1 Material/Notes PDF Download

OBJECTIVES:

• To understand the materials and their properties along with manufacturing considerations.
• To gain knowledge about the strength of machine elements.
• To understand and apply the knowledge in designing the riveted and welded joints, keys, cotters and knuckle joints.
• To understand and apply the knowledge in designing the shafts and shaft couplings.
• To understand and apply the knowledge in designing the mechanical springs.

UNIT-1

INTRODUCTION: General considerations in the design of Engineering Materials and their properties – selection –Manufacturing consideration in design–BIS codes of steels.

STRESSES IN MACHINE MEMBERS: Simple stresses – combined stresses – torsional and bending stresses – impact stresses – stress strain relation – various theories of failure – factor of safety – design for strength and rigidity – preferred numbers. the concept of stiffness in tension, bending, torsion and combined situations – static strength design based on fracture toughness.

Download UNIT-1 Material PDF | Reference-2

UNIT-2

STRENGTH OF MACHINE ELEMENTS: Stress concentration – theoretical stress concentration factor – fatigue stress concentration factor notch sensitivity – design for fluctuating stresses – endurance limit – estimation of endurance strength – goodman’s line – soderberg’s line – modified goodman’s line, Gerber’s parabola.

Download UNIT-2 Material PDF | Reference-2

UNIT-3

RIVETED AND WELDED JOINTS – design of joints with initial stresses – eccentric loading.

Bolted joints – design of bolts with pre-stresses – design of joints under eccentric loading – locking devices – bolts of uniform strength.

KEYS, COTTERS AND KNUCKLE JOINTS: Design of keys-stresses in keys-cotter joints-spigot and socket, sleeve and cotter, jib and cotter joints- knuckle joints.

Download UNIT-3 Material PDF | Reference-2

UNIT-4

SHAFTS: Design of solid and hollow shafts for strength and rigidity – design of shafts for combined bending and axial loads – shaft sizes – BIS code- Use of internal and external circlips- gaskets and seals (stationary & rotary).

SHAFT COUPLING: Rigid couplings – muff, split muff and flange couplings, flexible couplings – flange coupling (modified).

Download UNIT-4 Material PDF | Reference-2

UNIT-5

MECHANICAL SPRINGS: Stresses and deflections of helical springs – extension -compression springs – springs for fatigue loading, energy storage capacity – helical torsion springs – co-axial springs, leaf springs.

Download UNIT-5 Material PDF | Reference-2

Note: Design data book is NOT Permitted in the examination

TEXT BOOKS:

1. Machine design / NC Pandya & CS Shah/Charotar Publishing House Pvt. Limited
2. Machine Design/V.B.Bhandari/ McGraw-Hill Education

REFERENCE BOOKS:

1. Design of Machine Elements / V.M. Faires/McMillan
2. Machine design / Schaum Series/McGraw-Hill Professional
3. Machine Design/ Shigley, J.E/McGraw Hill.
4. Design data handbook/ K.Mahadevan & K. Balaveera Reddy/ CBS publishers.
5. Machine Design –Norton/ Pearson publishers

OUTCOMES:

• CO1: Judge about materials and their properties along with manufacturing considerations.
• CO2: Gain knowledge about the strength of machine elements.
• CO3: Apply the knowledge in designing the riveted and welded joints, keys, cotters and knuckle joints.
• CO4: Apply the knowledge in designing the shafts and shaft couplings.
• CO5: Apply the knowledge in designing the mechanical springs.

JNTUK R20 3-1 AWP Material/Notes PDF Download

Students those who are studying JNTUK R20 ECE Branch, Can Download Unit wise R20 3-1 Antenna and Wave Propagation (AWP) Material/Notes PDFs below.

JNTUK R20 3-1 AWP Material/Notes PDF Download

UNIT-1

ANTENNA FUNDAMENTALS: Introduction, Radiation Mechanism – single wire, 2 wire, dipoles, Current Distribution on a thin wire antenna. Antenna Parameters – Radiation Patterns, Patterns in Principal Planes, Main Lobe and Side Lobes, Beamwidths, Polarization, Beam Area, Radiation Intensity, Beam Efficiency, Directivity, Gain and Resolution, Antenna Apertures, Aperture Efficiency, Effective Height, illustrated Problems.

Download UNIT-1 Material PDF

UNIT-2

THIN LINEAR WIRE ANTENNAS: Retarded Potentials, Radiation from Small Electric Dipole, Quarter wave Monopole and Half wave Dipole – Current Distributions, Evaluation of Field Components, Power Radiated, Radiation Resistance, Beamwidths, Directivity, Effective Area and Effective Height. Natural current distributions, fields and patterns of Thin Linear Center-fed Antennas of different lengths, Radiation Resistance at a point which is not current maximum. Antenna Theorems – Applicability and Proofs for equivalence of directional characteristics, Loop Antennas: Small Loops – Field Components, Comparison of far fields of small loop and short dipole, Concept of short magnetic dipole, D and Rr relations for small loops.

Download UNIT-2 Material PDF

UNIT-3

ANTENNA ARRAYS : 2 element arrays – different cases, Principle of Pattern Multiplication, N element Uniform Linear Arrays – Broadside, End-fire Arrays, EFA with Increased Directivity, Derivation of their characteristics and comparison; Concept of Scanning Arrays. Directivity Relations (no derivations). Related Problems. Binomial Arrays, Effects of Uniform and Non-uniform Amplitude Distributions, Design Relations. Arrays with Parasitic Elements, Yagi-Uda Arrays, Folded Dipoles and their characteristics.

Download UNIT-3 Material PDF

UNIT-4

NON-RESONANT RADIATORS : Introduction, Traveling wave radiators – basic concepts, Long wire antennas – field strength calculations and patterns, Microstrip Antennas-Introduction, Features, Advantages and Limitations, Rectangular Patch Antennas –Geometry and Parameters, Impact of different parameters on characteristics. Broadband Antennas: Helical Antennas – Significance, Geometry, basic properties; Design considerations for monofilar helical antennas in Axial Mode and Normal Modes (Qualitative Treatment).

Download UNIT-4 Material PDF

UNIT-5

VHF, UHF AND MICROWAVE ANTENNAS: Reflector Antennas : Flat Sheet and Corner Reflectors. Paraboloidal Reflectors – Geometry, characteristics, types of feeds, F/D Ratio, Spill Over, Back Lobes, Aperture Blocking, Off-set Feeds, Cassegrain Feeds. Horn Antennas – Types, Optimum Horns, Design Characteristics of Pyramidal Horns; Lens Antennas – Geometry, Features, Dielectric Lenses and Zoning, Applications, Antenna Measurements – Patterns Required, Set Up, Distance Criterion, Directivity and Gain Measurements (Comparison, Absolute and 3-Antenna Methods).

Download UNIT-5 Material PDF

WAVE PROPAGATION: Concepts of Propagation – frequency ranges and types of propagations. Sky Wave Propagation – Formation of Ionospheric Layers and their Characteristics, Mechanism of Reflection and Refraction, Critical Frequency, MUF and Skip Distance – Space Wave Propagation – Mechanism, LOS and Radio Horizon.– Radius of Curvature of path, M-curves and Duct Propagation.

Download UNIT-5 PART-B Material PDF

TEXT BOOKS:

1. Antennas for All Applications – John D. Kraus and Ronald J. Marhefka, 3rd Edition, TMH, 2003.
2. Electromagnetic Waves and Radiating Systems – E.C. Jordan and K.G. Balmain, PHI, 2nd Edition, 2000.

REFERENCE BOOKS:

1. Antenna Theory – C.A. Balanis, John Wiley and Sons, 2nd Edition, 2001.
2. Antennas and Wave Propagation – K.D. Prasad, Satya Prakashan, Tech India Publications, New Delhi, 2001.

OUTCOMES:

• Identify basic antenna parameters.
• Design and analyze wire antennas, loop antennas, reflector antennas, lens antennas, horn antennas and micro-strip antennas
• Quantify the fields radiated by various types of antennas
• Design and analyze antenna arrays
• Analyze antenna measurements to assess antenna’s performance
• Identify the characteristics of radio wave propagation