I've a little research project that is quickly running out of money because I can't get a good model into MWO. I've too many years of EM experience, but am new to MWO and IE3D having acquired evaluation licenses for both, but am having trouble climbing the learning curve. I can get antenna structures to compute correctly, but every attempt at a model of a structure to characterize an EBG has failed. I'm starting with the simplest high impedance surfaces, like those in the
1999 Sievenpiper, et al paper, but so far I'm stymied.I've tried putting a couple of tracks on either side of the structure and measuring the transmission (S21), but there is never any difference between the presence or absence of the EBG surface. I've tried orienting the tracks parallel and perpendicular, but never get any obvious changes whether the surface is present or absent. I've even tried scanning wide frequency ranges, in case the published EBG parameters are 'in error', but i can't seem to make anything work.
Does anyone here have experience using either one of these tools for this purpose? What approach did you use to characterize the structures? Can anyone give me a some pointers?
TIA,
Tom Lavedas