Efficient computation of double series for the planar circuit analysis viaAPA-E algorithm

A novel efficient numerical algorithm for computation of double series for the planar circuit analysis is proposed in this paper. The method is based on the abstract Fade approximate and extrapolation algorithm. III order to demonstrate its advantages, the classical multivariable rational Fade appro ximate is also constructed for comparison. It is shown by the calculation r esults that the method presented here can provide fast convergence and high accuracy, so it is much better than the classical Fade approximate and ori ginal analytical formula for computing planar circuit parameters with the s ummation of two-dimensional infinite modes.