The step by step development of NRW method

This paper explains in details the NRW method highlighting its mathematical procedure and analyzing the most important points and limitations to characterize the complex permittivity and permeability of dielectrics. The step by step procedure help the researchers to well understand the physical phenomenona involved and also is a tool to facilitate its implementation. Explanations on the limitations of the method in situations where the return loss tends close to zero and the disambiguation phase using two samples are detailed. The non-iterative method was evaluated as a candidate to characterize materials for radome applications.