When to Use Waveguides?

Rectangular and circular waveguides are commonly used to connect feeds of parabolic dishes to their electronics, either low-noise receivers or power amplifier/transmitters. Waveguides are used in scientific instruments to measure optical, acoustic and elastic properties of materials and objects.

Why waveguides are used in transmission lines?

Waveguides are metal tubes functioning as “conduits” for carrying electromagnetic waves. They are practical only for signals of extremely high frequency, where the signal wavelength approaches the cross-sectional dimensions of the waveguide.

Which is the most commonly used waveguide?

Circular waveguides, commonly referred to as optical fibers, are the most common form of light waveguide used for optical communication.