Sending circularly polarized wave through the coil structure

- June 28, 2018 at 9:27 pm
  
  yank4
  Subscriber
  
  Hi,
  
  I want to send a circularly polarized wave through Floquet Port at the bottom of the coil. It seems only linearly polarized excitation is possible from this picture. Does anyone know what should I do if I want to send circularly polarized wave through the Floquet Port?
- July 13, 2018 at 9:32 pm
  
  slouie
  Ansys Employee
  
  Hi Yank4,
  
  If you navigate to HFSS>>Fields>>Edit Sources, you will see the two modes (TE, TM) listed in the Floquet Port as mode 1 and mode 2. Like in the below screen-shot, you will see in the first two rows that Floquet Port 1 has :1 and :2 for the two modes.
  
  You should be able to produce a circularly polarized excitation as a result by adding 90deg phase to one of the modes.
- July 18, 2018 at 1:45 am
  
  yank4
  Subscriber
  
  Hi, slouie,
  
  Thank you so much!!!
- November 13, 2020 at 7:51 am
  
  Sylvie
  Subscriber
  
  Hello, nIn any case, did you try to find out the reflection coefficients (or S-parameters) of the coil structure you mentioned? It would be really helpful if you give some insight on how to get the combined reflection of both the FloquetPort modes which makes the Circular Polarization excitation. I could get the S params of the individual modes of the CP incident wave.nThank you.n