Identifying Wave-guide modes in rectangular wave guides

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SUMMARY

This discussion focuses on identifying wave-guide modes in rectangular waveguides, specifically TE (Transverse Electric) and TM (Transverse Magnetic) modes such as TE01, TE10, TM11, TE02, and TE20. The key takeaway is that the first index represents the number of half-wavelengths in the x-direction (m), while the second index represents the number of half-wavelengths in the y-direction (n). Additionally, the conversation clarifies that the TM11 mode exhibits circumferential field variations, which are not visible in a side-view diagram that only shows z-axis and radial variations.

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  • Understanding of waveguide theory and modes
  • Familiarity with TE and TM mode classifications
  • Knowledge of half-wavelength concepts in wave propagation
  • Ability to interpret waveguide diagrams and field variations
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reddvoid
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How to identify type of wave-guide mode here, like its TE or TM
TE01 , TE10, TM11, TE02, TE20 . ..
I read number of half wavelengths in x direction is the m and number of half-wavelengths in y direction is n. . .but I can't figure-out how . . .can somebody please explain
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Try to find a better reference. I'm sure there must be some on the "net".

You are describing circular waveguide modes.
The first index denotes the number of variations circumferentially, the second index denotes the number of variations radially.

Your diagram shows the waveguide viewed from the side, only z-axis and radial variations are visible.

The TM11 guide will have variation in fields circumferentially, which is not visible in your diagram. The diagram is a view only at one specific rotational orientation.
 

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