Bounding the performance limitations of small antennas — Taking a new look at an old problem and interpreting the knowledge gained from the viewpoint of an antenna designer

In this paper, we describe a new way to estimate the bounds on the performance metrics of small antennas that embellish the Chu-Harrington limit commonly used for the same purpose. The underlying concept is base on the use of dipole moment representations of small antennas and analytic continuations of these representations.