Esselle K P, Stuchly M A
Electronics Department, Macquarie University, Sydney, NSW, Australia.
IEEE Trans Biomed Eng. 1994 Feb;41(2):151-8. doi: 10.1109/10.284926.
An expansion technique based on modified Bessel functions is used to obtain an analytical solution for the electric field induced in a homogeneous cylindrical volume conductor by an external coil. The current in the coil is assumed to be changing slowly so that quasi-static conditions can be justified. Valid for any coil type, this solution is ideal for fast computation of the induced electric field at a large number of points. Efficient implementation of this method in a computer code is described and numerical results are presented for a perpendicular circular coil and a tangential double-square coil.
一种基于修正贝塞尔函数的展开技术被用于获得由外部线圈在均匀圆柱形体积导体中感应出的电场的解析解。假设线圈中的电流变化缓慢，从而可以证明准静态条件是合理的。该解对任何线圈类型都有效，非常适合在大量点处快速计算感应电场。描述了该方法在计算机代码中的有效实现，并给出了垂直圆形线圈和切向双方形线圈的数值结果。
