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Dominant modes and degenerative modes for waveguides

- July 31, 2020 at 5:40 pm
  
  NKC
  Forum Moderator
  
  Hello there, how can we differentiate the dominant modes and degenerative modes for waveguides?
- July 31, 2020 at 5:40 pm
  
  VivekKamble
  Ansys Employee
  
  Hello Navya,
  The mode in a rectangular waveguide which has the lowest cut-off frequency is called a dominant mode. For rectangular waveguide, the dominant mode is TE10 , which is the lowest possible mode. Whereas, two or more modes having same cut-off frequency but different field configuration are called degenerate modes.
- July 31, 2020 at 5:40 pm
  
  NKC
  Forum Moderator
  
  Thank you for the quick reply. What is meant by TE as for dominant mode?
- July 31, 2020 at 5:41 pm
  
  VivekKamble
  Ansys Employee
  
  Hi Navya,
  TE denotes the Transverse Electric modes of a waveguide. Here, the electric field vector will be always perpendicular to the direction of propagation.
- July 21, 2021 at 6:33 am
  
  Vyshu_123
  Subscriber
  
  .
  What is dominant mode and degenerate modes in circular waveguide?
  .

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