How exactly near field sources radiate?

lostarmour
lostarmour Altair Community Member
edited October 2020 in Community Q&A

When I choose a near field source for far field computation, I am asked to choose a configuration with either one electric field source,  both electric and magnetic field sources or magnetic field sources. What is the difference. For example, if I choose only electric field source, does it evaluate far field by a equivalent magnetic source ( 

 \vec{M} = 2 (\vec{E}_{a} \times \hat z )

) ? Or one needs to put an infinite ground plane surrounding it (so that the source becomes a slot) and then need to simulate? 

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Answers

  • Mel
    Mel Altair Community Member
    edited April 2020

    A detailed explanation of usage is given in the User Manual - look for the section, 'AP card' (in the 2019.3 manual it is from page 937).

     

    (The AP card is another name for the aperture source, the card referring to entries in the .pre file which is written by CADFEKO automatically, or in advanced use cases, by the user)

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