A New Analytical and Numerical Method for Describing the Response of a Linear Antenna for Pulse Excitation Submission

The paper proposes a hybrid method based on a combined numerical and analytical description of the linear antenna response to Gaussian pulse excitation. Its advantage is to avoid losing the stability of calculations while solving the electric field integral equation in time domain. In the numerical part of the method, the MOT algorithm was used; in the analytical part discrete mean-square approximation with new modified spherical Bessel functions of the first kind as a base was used. This allowed us to calculate the approximating (and extrapolating) functions of small orders.