Linear Multipole Source for a Field Described by Circular Cylinder Wave Functions

In this paper, it is shown that the source of the field described by the circular cylinder wave function can be a linear multipole. Compared to the multipoles proposed in [1] and [2], this type of multipole consists of a smaller number of monopoles. The results of a comparison of the accuracy of describing the considered fields using these multipoles are presented. It is established that the linear multipole is the most optimal for describing these fields.