Question

1. # A Hollow Rectangular Waveguide Cannot Propagate Tem Waves Because

Waveguides are crucial components of many electronic devices, and their performance is often dependent on the quality of the waveguide. However, when a waveguide is designed improperly, it can cause problems with propagation of ultrasonic waves. In this blog post, we will explore how a hollow rectangular waveguide cannot propagate tem waves because of its design flaws.

## What is a Waveguide?

A waveguide is an optical device that uses the principles of refraction and diffraction to guide light. The basic structure of a waveguide is a hollow rectangular or cylindrical tube with a smooth, curved surface on one end. The other end is open, allowing light to pass through the tube.

When light travels through a waveguide, it experiences a series of reflections from the curved surface. This process causes the light to travel in a straight line along the surface of the tube. Because a waveguide can restrict the distance between the source and destination, it can be used to create extremely precise beams of light.

One disadvantage of using a waveguide for propagation is that it cannot handle waves with large amplitudes (temporal waves). This limitation is due to the fact that waves travelling through a waveguide are restricted by its boundaries. Temporal waves are created when objects move relative to one another and generate circular patterns in space (see image below). Because a waveguide cannot propagate these types of waves, they will be reflected back into the device many times before they reach their destination.

## What are Tem Waves?

Tem waves are electromagnetic waves with a frequency between 10 and 100 GHz. They have an unusual property that they cannot propagate through a hollow rectangular waveguide because the waveform has a pattern that is not periodic.

## How does a Waveguide Propagate Tem Waves?

A hollow rectangular waveguide cannot propagate tem waves because the electromagnetic field travels around the inside of the channel, instead of through it.

## Conclusion

As can be seen in the figure, a hollow rectangular waveguide cannot propagate tem waves because the electric field within the waveguide is perpendicular to thedirection of vibration.