Waveguide

A waveguide is a structure that guides waves, such as electromagnetic waves or sound waves. They enable a signal to propagate with minimal loss of energy by restricting expansion to one-dimension, or two. This is a similar effect to waves of water constrained within a canal, or why guns have barrels that restrict hot gas expansion to maximize energy transfer to their bullets. Without the physical constraint of a waveguide, signals will typically dissipate according to the inverse square law as they expand into three dimensional space.

There are different types of waveguides for each type of wave. The original and most common meaning is a hollow conductive metal pipe used to carry high frequency radio waves, particularly microwaves.

Waveguides

Transverse Waves

Transverse mode

Waveguides - Weekly Whiteboard

Waveguide to antenna transmission

TM and TE Polarization - part 1

TM and TE Polarization - part 2

Lecture 20 (FDTD) -- Waveguide analysis

HFSS_ Rectangular wave guide

How-to Build a Rectangular Waveguide in XFdtd

Waveguide Ports in XFdtd

Waveguide Filter Design in XFdtd

Waveguide Cavity Filter_ SS E-Field Stop Band

TE 10 mode

TE20 mode

TM11 mode