waveguide mode... question maybe easy

[lefrancais]

hello

i have an easy question ... about waveguide

With a picture of the E field vector and H field vector inside a waveguide rectangular or circular etc.... ( and a dielectrique resonator also)

how I can find the order of the mode I see.

Someone knows how to recognize which mode TEmn or TMmn or TEMmn

thanks

 

[mdanaie]

count the zeroes in each direction. Either of E or H may become zero in x y or z direction ( the number of these nodes spesifies the mode in xyz format)

 

[Kit-the-great]

For circular waveguide You should count zeroes in radius an angle (polar coordinates).

Kit

 

[shiv_chandan]

For the single mode, you will have to check for the nunber of half sine wave variations in x or y direction for the rectangular waveguide. But for the mixed mode in a waveguide, say e.g. we have TE10, TE11 & TM01 in waveguide, how to distinguish & recongnise the type of mode, Pls suggest.