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What are the Practical Application of Waveguide??By : Sankalp - 09-Jan-2018 
As far as Microwave is concerned we came to know about waveguide but just tell me that why we are studying TE, TEM etc waveguides?
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Suraj09-Jan-2018

In a microwave oven a waveguide transfers power from the magnetron, where waves are formed, to the cooking chamber.
In a radar, a waveguide transfers radio frequency energy to and from the antenna, where the impedance needs to be matched for efficient power transmission.
Rectangular and Circular waveguides are commonly used to connect feeds of parabolic dishes to their electronics, either low-noise receivers or power amplifier/transmitters.