Self and mutual impedances of two parallel staggered dipoles by variational method

The problem of the self- and mutual-impedances of two arbitrarily located parallel dipoles is solved by using the variational method and a two-term trial function for current distribution. The impedances are calculated for half-wave and full-wave dipoles in non-staggered, echelon and collinear arrangements. In all three cases the results are in excellent agreement with those obtained by the Chang-King five-term theory. In the non-staggered case agreement with experimental results is also very satisfactory.