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12: Waveguides

  • Page ID
    22740
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    A study of the propagation of electromagnetic waves through rectangular and circular hollow conducting pipes.

    • 12.1: Simple Transverse Electric Modes
      This page covers the propagation of infinite plane waves and their behavior in waveguides, particularly focusing on the TE mode. It details formulations of electric and magnetic fields, adherence to Maxwell's equations, and boundary conditions. The text explores energy characteristics using the Poynting vector and introduces group velocity.
    • 12.2: Higher Order Modes
      This page covers higher order wave-guide modes, including Transverse Electric (TE) and Transverse Magnetic (TM) modes, detailing how they are derived from Maxwell's equations. It emphasizes conditions for wave propagation, cutoff frequencies, and electric and magnetic field characteristics for specific modes in rectangular waveguides, such as TE10 and TM11.
    • 12.3: Waveguide Discontinuities
      Any discontinuity in the dielectric constant, in the permeability, or any discontinuity in the dimensions of a waveguide will result in reflected waves.
    • 12.4: Energy Losses in the Waveguide Walls
      When a metal is exposed to a time-varying magnetic field eddy currents are induced which flow so as to shield the interior of the metal from the magnetic field. The magnetic field decays towards the interior of the metal.
    • 12.5: Circular Waveguides
      The modes sustained by a circular wave-guide have much in common with the rectangular wave-guide modes. They may, for example, be classified as transverse electric modes (TE modes) in which there is no component of electric field along the guide axis, or as transverse magnetic modes (TM modes) in which there is no component of the magnetic field along the guide axis.

    Thumbnail: Waveguide flange UBR320 for microwaves. (Public Domain; Catslash via Wikipedia)


    This page titled 12: Waveguides is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by John F. Cochran and Bretislav Heinrich.