Revision notes on electromagnetic waves askiitians. Transmission lines and electromagnetic waves nptel. Electromagnetic waves,attenuation constant,phase constant,propogation constant,intrinsic impedence,em wave in any general medium,em wave in free space, em wave in perfect dielectric,velocity,em waves in lossy dielectrics,em waves in good conductor,skin depth or depth of penetration,effect,poynting vector and poynting therom,waves are means of. Ec6403 electromagnetic fields anna university 20 regulation syllabus download pdf. Nptel provides elearning through online web and video courses various streams. The oscillating electron supplies energy at a certain constant rate so that the power p carried by the radiation is constant. Buy electromagnetic waves book online at low prices in. These electromagnetic field theory emt study notes will help you to get conceptual deeply knowledge about it. Maxwells work thus unified the domain of electricity, magnetism and light.
This means that although they appear to be very different, in fact theyre all made of the same kind of vibrations but at different. We will start with maxwells equations and gradually move on to discuss the properties of electromagnetic waves such as their contents, source, propagation, momentum, and energy. Shevgaonkar department of electrical engineering iit bombay. Transmission lines and em waves nptel online videos. The basic principles of electromagnetic theory include electrostatics, electromagnetic induction, magnetic fields of steady currents, etc. Plane electromagnetic waves and wave propagation 7. Remember that power is proportional to the intensity, which is itself proportional to the. Introduction to propagation of electromagnetic waves. Buy electromagnetic waves book online at best prices in india on. In materials, like a prism, light can have dispersion. They can go forever until absorbed by some charges along the way. Chapter maxwells equations and electromagnetic waves. We will consider a plane electromagnetic wave travelling in a linear dielectric medium such as. The visible electromagnetic spectrum goal the goal is to introduce the visible electromagnetic spectrum to students through use of materials readily available to most high school science classes.
Electromagnetic waves complete notes ebook free download pdf emr has both electric and magnetic field components, which stand in a fixed ratio of intensity to each other, and which oscillate in phase perpendicular to each other and perpendicular to the direction of energy and wave propagation. Electromagnetic waves,attenuation constant,phase constant,propogation constant,intrinsic impedence,em wave in any general medium,em wave in free space, em wave in perfect dielectric,velocity,em waves in lossy dielectrics,em waves in good conductor,skin depth or depth of penetration,effect,poynting vector and poynting therom, waves are means of. Jul 01, 2017 buy electromagnetic waves book online at best prices in india on. Ec8451 electromagnetic fields question bank 3 download pdf ec8451. Electric and magnetic fields fluctuating together can form a propagating wave, appropriately called an electromagnetic wave. Let us consider rectangular circular hollow conducting cylinders, through which an em wave will be guided by bending. Mod01 lec07 electromagnetic wave propagation in plasma. In the absence of free charge and current densities the maxwell equations are. The electromagnetic spectrum t e harrington middle school. Relationship between electric field on a closed surface and the charge enclosed inside it.
Electromagnetic waves in guided and wireless media video. Code segments illustrating the usage of these functions are found throughout the book, and serve as a user manual. Electromagnetic waves unlike the waves we met last semester, such as sound waves or waves on a string, no medium is required it is not atoms moving around, but instead the electric and magnetic. We are here to provides you the best study notes from best coaching like made easy, ace academy etc and lecture notes from best institutions like mit open course, iit nptel open courses and eth zurich, liverpool, cambridge, oxford, warwick, rochester, cornell, mcgill, national. Maxwell calculated that electromagnetic waves would propagate at a speed given by the equation c 1 24. Fourier analysis with traveling waves, dispersion lecture 12. Electromagnetic shielding 7 when regions 1 and 3 are air, by letting z 1 z 3 z 0, z 2 z s, and k x 2 k x s, equation 24 simpli. Em waves meet conductors, transmission lines lecture 16. Electromagnetic fields ec8451 anna university lecture.
In this course, we discuss guided electromagnetic wave propagation in transmission lines and metallic waveguides, light propagation in optical waveguides, fibers. Online study material, lecturing notes, assignment, reference, wiki and important questions and answers. This relation implies that electromagnetic waves are dispersionless with velocity c. The vector r denotes the location in space where the. The transmission line is a twoport circuit used to connect a generator or transmitter signal to a receiving load over a distance. The fields e and b and are perpendicular to the direction of propagation v em. Nocelectronic modules for industrial applications using opamps. Some of the lecture notes were prepared in latex by alan dunn, a former mit student. E and b are perpendicular to each other in a manner such that e. Tata mcgrawhill education, oct 1, 2005 electromagnetic waves 580 pages.
Momentum in electromagnetic field angular momentum in electromagnetic field electromagnetic waves. It is on water waves, with special emphasis on old and new results for waves on a sloping beach. These waves could have any frequency, but for one special region, the region is the visible spectrum. So we call the regional frequencies and wavelengths that electromagnetic waves can have the electromagnetic spectrum, and there is a lot to learn about the electromagnetic spectrum. These \v8ves are used in the field of radio communication.
These are meant to be introductory and are abbreviated versions of topics in my book linear and nonlinear waves, which can be consulted for ampli. To see how a changing electric field gives rise to a magnetic field, let us consider the process of charging of a capacitor and apply amperes circuital law given by chapter 4 b. This training material has been developed based on the latest gate syllabus. Lecture notes physics iii physics mit opencourseware.
Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses. In this video tutorial, we will learn in detail the various concepts related to electromagnetic waves. Maxwell, 18611862 hertz confirmed this by experiments in 1888. Electromagnetic theory online course video lectures by iit. Lecture 11 chapter 16 waves i university of virginia. Radio waves the radio waves are the electromagnetic waves of frequency ranging from 500 khz to about mhz. Hertz, in 1885, experimentally demonstrated the existence of electromagnetic waves. Apr 05, 2016 momentum in electromagnetic field angular momentum in electromagnetic field electromagnetic waves.
Electromagnetic theory pdf notes emt pdf notes smartzworld. Electromagnetic waves complete notes ebook free download pdf. Equation of plane progressive electromagnetic wave. Its technological use by marconi and others led in due course to the revolution in communication that we are witnessing today. Nocelectromagnetic waves in guided and wireless media.
Traveling waves waves propagate from one place to another. The total energy density for an electromagnetic wave is the sum of the two energy densities. Solution of maxwells equations is the threedimensional wave equation for a wave traveling at the speed of light proved that light is an electromagnetic wave em waves carry energy through empty space and all remote sensing techniques exploit the modulation of this energy. All electromagnetic waves travel at the same speed 300,000,000 metres per second, which is the speed of light.
With reference to the frequency range and wavelength range, the radio waves have been divided into various categories shown in table. Electromagnetic field theory study notes handwritten. Electromagnetic waves would be capable of exerting forces on charges great distances from their source, and they might thus be detectable. Electromagnetic waves and the electromagnetic spectrum. Electromagnetic theory basically discusses the relationship between the electric and magnetic fields. Wave equation plane electromagnetic waves energy carried by. Propagation of electromagnetic waves in a conducting medium. Programmatic solutions to maxwells equations using octavematlab week 7. A thorough understanding of propagation and radiation of electromagnetic waves in both wired and wireless media is important in many fields such as microwave and rf engineering, antennas, wireless communications, and fiberoptics. Aug 01, 2016 the text makes extensive use of matlab. The electromagnetic spectrum introductionvisible light 1 instructors guide to lab no. Losses in propagation and propagation constant, polarization the only difference from transmission lines week 9. Lecture notes 6 electromagnetic waves in matter electromagnetic wave propagation in linear media we now consider em wave propagation inside linear matter, but only in regions where there are no free charges free 0 andor free currents kfree 0 i. Isbn 9789533073040, pdf isbn 97895351607, published 20110621.
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