Transcription of Lecture -- Transmission Line Equations
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9/21/20191 Electromagnetics:Electromagnetic Field TheoryTransmission line EquationsLecture Outline Introduction Transmission line Equations Transmission line Wave EquationsSlide 2129/21/20192 Slide 3 IntroductionMap of Waveguides (LI Media)Slide 4 Transmission Lines Contains two or more conductors. No low frequency cutoff. Thought of more as a circuit clement Confines and transports waves. Supports higher order modes. Has TEM mode. Has TE and TM Pipes Has one or less conductors. Usually what is implied by the label waveguide. Metal Shell PipesDielectric PipesInhomogeneousHomogeneous Enclosed by metal. Does not support TEM mode. Has a low frequency cutoff. Supports TE and TM modes Supports TE and TM modes only if one axis is uniform. Otherwise supports quasi TM and quasi TE WaveguidesSlab Waveguides Composed of a core and a cladding. Symmetric waveguides have no low frequency cutoff.
Transmission Line Parameters RLGC Slide 8 It can be useful to think of transmission lines as being composed of millions of tiny little circuit elements that are distributed along the length of the line. In fact, these circuit element are not discrete, but continuous along the length of the
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