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Find TM waves mode in a rectangular waveguide

  1. Jan 7, 2015 #1
    1. The problem statement, all variables and given/known data
    5538343900_1420641051.jpg

    2. Relevant equations
    %5Cpi%20x%29Sin%2840n%5Cpi%20y%29Cos%282%5Cpi*10%5E%7B10%7Dt-%5Cbeta%20z%29%3D%3Em%3D5%2Cn%3D2.5.gif


    3. The attempt at a solution

    Hello
    As you see my solution I found TM(5 , 2.5) that is incorrect because n should be integer not float number.In Addition when I check book solution I found TM mode is TM(2,1)
    what is my mistake?
     
  2. jcsd
  3. Jan 10, 2015 #2

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    Hi baby_1,

    Have you checked the errata for the edition of the book you are using. Seems to me there is a typo in their problem statement (which doesn't even tell you what units to use for the coordinates [itex]x[/itex] and [itex]y[/itex]. What textbook is this from?

    Cheers,
    Gabba
     
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