Re: NEC-LIST: near magnetic field wavelength to segment length errors

This problem might be best solved analytically. Unless you need to deal
with the interaction with other options in the vicinity.
Calculate the magnetic field from the small loop (which is "very small"
compared to lambda, so it's a point source magnetic dipole)
Calculate the induced voltage in the receiving loop.

"James Bird" <hwh-james_at_optusnet.com.au> writes:
> All,
>
> Thanks to all those who responded to my last post. I've now got 4nec2X
> working on a Windows machine. And I successfully simulated my single
> loop.
>
> Now I want to simulate a pair of coils/loops, one with a signal source
> which induces a signal in the second. I want to see the near magnetic
> field for this structure and also information about the signal in the
> second coil. My "end game" is to minimize the signal induced in the
> second coil by coupling the coils such that the induced currents cancel.
>
> The trouble is, the signal in the first coil is 125kHz (wavelength =
> 2.4km) and the dimensions of the structure are less than a meter, and so
> I violate the rules stated in the "validate" page contained in the help
> file.
>
> Does this mean I cannot use NEC for my requirements? Should I be looking
> at FEM programs instead of MoM?
>
> Many thanks,
> James.
>
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