Transmission lines and waveguides a transmission line is a device designed to guide electrical energy from one point to another. Ec6503 tlwg notes, transmission lines and wave guides. Gate preparation, nptel video lecture dvd, electronicsandcommunicationengineering, transmissionlinesandwaveguides, theory of transmission lines, transmission lines theory, infinite line, wavelength, velocity of propagation, propagation velocity, waveform distortion, distortion, loading, less line loading, methods of loading, loading methods, line not terminated in z0, z0 not. Am 10 a transmission line, which has neither frequency distortion nor phase distortion is called a distortion less line. Transmission lines and em waves nptel online videos. Basic ideas steady states determining time constant determining transient amplitude transmission lines basics re. In this course, we discuss guided electromagnetic wave propagation in transmission lines and metallic. Two parallel wires coaxial cable microstrip line optical fiber waveguide very high frequencies, very low loss, expensive etc. Introduction to em waves and various techniques of communication. Vlf, lf, hf, vhf, uhf, microwave 16 hrs 88 b definition and physical concepts of the. Nptel provides elearning through online web and video courses various streams. Transmission lines and wave propagation crc press book.
Em fields in a waveguide or transmission line are e j z. To study the propagation, reflection, and transmission of plane waves in bounded and unbounded media. The most important was the fact that only plane waves were treated. Ec6503 transmission lines and waveguides v semester 2 marks department of electronics and communication engineering 111 10. Transmission lines a transmission line connects a generator to a load a two port network transmission lines include physical construction. Also, in the large array structures, like ramrom, thehorizontal and verticaldata tracks are long and, therefore, may be sensitive to the external interference. Em waves and transmission lines ppt, full notes, ebooks. Electrostaticscoulombs law and electric field intensity fields due to continuous charge distributions, electric flux density, gauss law and its applications, electric potential, relations between e and v, maxwells two. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses. Transmission lines and wave propagation, fourth edition helps readers develop a thorough understanding of transmission line behavior, as well as their advantages and limitations. Introduction to transmission lines and waveguides a transmission line is a device designed to guide electrical energy from one point to another.
Some typical values can be found for z 0 50 ohmcable with a polyethylene dielectric and speed u halfoflight. Uniqueness of traveling waves for a twodimensional bistable periodic lattice dynamical. Basic rules given zl find the coefficient of reflection cor find zl on the chart pt. Even a change in the length of a simple connecting wire may alter the behavior of the circuit. The voltage and currents exist in the form of waves.
General solution of the transmission line, the two standard forms for voltage and current of a line terminated by an impedance, physical significance of the equation and the infinite line, the two standard. Given the relationships that exist between forward and reflected waves on transmission lines, it is relatively simple to sketch the progression of a step function on a line in the time domain. Traveling wave solutions of a diffusive seir epidemic model with nonlinear incidence rate zhao, lin, zhang, liang, and huo, haifeng, taiwanese journal of mathematics, 2019. Major topics include electromagnetic waves, transmission lines, waveguides, and antenna fundamentals. Nptel syllabus transmission lines and em waves video course 1. Shevgaonkar department of electrical engineering iit bombay. Em waves and transmission lines ppt, full notes, ebooks hi can u post the book electromagnetic waves and transmission lines by u. Shevgaonkar, dept of electrical engineering, iit bombay for more details on nptel visit. Nonlinear stability of periodic traveling waves of the bbm system hakkaev, sevdzhan, communications in mathematical analysis, 20. The circuit approach then has to be reinvestigated with inclusion of the space into the analysis. Electronics transmission lines and em waves nptelhrd. Developments in research, programs, and concepts since the first edition presented a demand for a.
Study time varying maxwells equations and their applications in electromagnetic. Electromagnetic theory video course course outline electromagnetic theory is a core course in electrical engineering curriculum. Electromagnetic waves and transmission lines unit1 electromagnetic theory is a prerequisite for a wide spectrum of studies in the field of electrical sciences and physics. This approach is then called the transmission line approach. Traveling waves and power waves building a solid foundation for microwave circuit theory m icrowave equivalentcircuit theory is like a grand old building. Lines because lo and co do not depend on frequency for a superconductor, the phase velocity is independent of frequency. Electromagnetic waves and transmission lines, and their practical applications b. These waves travel along the line with the velocity equal to velocity of light if line losses are neglected. The analysis of travelling waves on power system transmission lines a thesis presented for the degree of doctor of philosophy in electrical engineering in the university of canterbury, christchurch, new zealand. Co 2 describe the characteristics of electromagnetic waves in. Parallel plate and rectangular waveguides, modes of parallel plate and rectangular. Elen 3371 electromagnetics fall 2008 85 lossy transmission lines here.
The course covers static and dynamic electric and magnetic fields and their interaction. The transmission line is a distributedparameter network, where voltages and currents can vary in magnitude and phase over the length of the line. To introduce the student to the fundamental theory and concepts of electromagnetic waves and transmission lines, and their practical applications, to study the propagation, reflection, and transmission of plane waves in bounded and unbounded media. Concept of polarization of em waves, electromagnetic spectrum and its various ranges. Also, the amount of attenuation is extremely small, since this is due to ro. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services. Debapratim ghosh department of electrical engineering.
Upon successful completion of the course, students will be able to a. Introduction to em waves and various techniques of. Electromagnetic theory can be thought of as generalization of circuit theory. Transmission lines and waveguides are utilized to transfer electromagnetic waves carrying energy and information from a source to a receiver choice of the line technology depends on the purpose, e. It is used, for example, to transfer the output rf energy of a transmitter to an antenna. There are certain situations that can be handled exclusively in terms of field theory. In most cases, we also assumed the waves only propagate forward from the source, although reflections from interfaces cause waves to also propagate backward toward the source and these were treated in chapter. Travelling wave on transmission line is the voltage current waves which propagate from the source end to the load end during the transient condition. Dielectricdielectric and dielectricmetal interfaces, fresnel coefficients,brewsters angle,total internal reflection week 11. A thorough understanding of propagation and radiation of electromagnetic waves in both wired and wireless media is important in many. Or is simply unity circle this will be the magnitude of cor.
Therefore, we call the differential equations introduced in this. Waves can exist traveling independently in either direction on a linear transmission line. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Electromagnetic waves in guided and wireless medium nptel. Gate ece transmission lines and wave guides exam material. Standing waves finding voltage magnitude voltage magnitude at z d current magnitude at the source let. For most lines it is not practical to vary the ratios b a and d r much more than about 2.
While the existence of interfaces complicates treatment, it also. Transmission lines and em waves nptel online videos, courses iit video lectures well organized. Ece 145a218a course notes transmission lines 1 time domain. Electronics transmission lines and em waves youtube.
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