title: Free-space asymptotic far-field series.
abstract: A systematic procedure for deriving the complete asymptotic series in inverse powers of the distance from the origin of free-space 2D and 3D, scalar and vectorial, monochromatic electromagnetic fields is derived here. Each term of the series is expressed in closed form through the use of a differential operator acting on the angular spectrum. A simple recursive routine for computing the derivatives is provided. Examples of application are also given.
authors.affiliation: Dipartimento di Elettronica Applicata, Università Roma Tre, I-00146 Rome, Italy. borghi@uniroma3.it
authors.forename: Riccardo
authors.initials: R
authors.lastname: Borghi
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Alonso