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Solved Problems-11

Problem-11
A lossless air-filled rectangular waveguide has dimensions of a = 7.214 cm and b = 3.404 cm. For the dominant mode propagation at 2.6 GHz, the guide transports 200 W of average power. Find the level of excitation of the Description: 43619.png field.
Solution
Here, a = 7.214 cm, b = 3.404 cm, f = 3 GHz, Description: 43612.png
 
For the dominant mode, i.e., TE11 mode, the cut-off frequency is given as,
 
 
Description: 43604.png
 
Hence, the average power transmitted is given as,
 
Description: 43596.png
 
Description: 43587.png
 





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