ABSTRACT
Numerical methods such as finite element method (FEM), FDTD method, moment method, and the electromagnetic software based on these methods are extensively used in the industry. However, whenever exact analytical solutions are not possible, approximate analytical solutions serve an important role in giving a “feel for the problem.” In addition, in many cases, they reduce the “computational burden” by giving the approximate acceptable solution with less amount of computation. Any how, they have a rich history dating back to the times when one did not entirely depend on computers.
