I am calculating mutual inductance of 4 rings at 297.2 MHz. What I observed is that values for M21 ans M12 are different! Also values between nearest neighbors horizontally and vertically are differnet. I dont understand why.
There can be multiple reasons. One possibility is an error in the geometrical mode, another one is a too coarse a discretization; without the input file it is impossible to say. If you can share it, I can check if there's anything amiss.