In Defense of Spheres for Computational Electromagnetics Code Validation and Benchmarking: Rethinking the sphere of influence

In this article, we illustrate some examples of how using spheres for computational electromagnetics (CEM) validation provides a range of challenges and broadly meaningful results. We show how complications that arise with validating using spheres can be representative of the issues that occur when modeling more complex objects. However, using spheres makes it easier to identify and understand these issues and discrepancies. We also describe how spheres present demanding problems for the CEM validation and benchmarking of both small- and large-size problems.