Lamare, good find. I did some digging and found a review by gentleman who's been working in the Navy with the security clearance to NEC-4 and well here's his review...
NEC-4 Modeling
"I have a lot to learn before I can be confident in using NEC-4 to predict antenna performance. I must find a better way to model grounded insulated antennas underground, and must find my errors in modeling electrically small loops."
I've got a compiler program from MIT for mutual capacitance and inductance on semi conductors that's scalable, just trying to get another Unix compiler to output the input file for custom designs. It should be able to calculate fairly accurately the interturn capacitance and inductance thru a Fq sweep. I'll keep the group posted on results.
NEC-4 Modeling
"I have a lot to learn before I can be confident in using NEC-4 to predict antenna performance. I must find a better way to model grounded insulated antennas underground, and must find my errors in modeling electrically small loops."
I've got a compiler program from MIT for mutual capacitance and inductance on semi conductors that's scalable, just trying to get another Unix compiler to output the input file for custom designs. It should be able to calculate fairly accurately the interturn capacitance and inductance thru a Fq sweep. I'll keep the group posted on results.
This book looks good.



where:
where the
The forms in terms of ε are correct only for linear


where
is the closed
is the
is the vector
is an
is the
is the net displacement current that links the curve C.
, but lies between the plates, provides:
which implies that the divergence of the current term vanishes, contradicting the continuity equation. (Vanishing of the divergence is a result of the
and
which is in
Wave propagation
Substituting this form for J into
with the result:
However,
leading to the
where use is made of the vector identity that holds for any vector field V(r, t):







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