AN EFFICIENT TECHNIQUE FOR SELF-TERM EVALUATION OF THE UNIFORM CURRENT VECTOR POTENTIAL INTEGRALS

This communication presents an efficient technique for self-term evalu ation of the uniform current vector potential integrals which often ar ise in certain cylindrical wire method of moments formulations. Simple approximating functions, derived from the application of numerical in terpolation routines, are introduced that may be used in place of othe r more complicated techniques for evaluation of these integrals. In pa rticular, this communication will focus on the development of these ap proximating functions for application in the moderately thick wire reg ime, where the reduced kernel approximation associated with thinner wi res is no longer valid. It is shown that these proposed functions offe r reasonably good accuracy over a wide range of wire segment lengths a nd radii.