Comparison of the equivalent circuit model and the tlm method for frequency selective surface analysis

The Transmission line modeling method (TLM) and Equivalent circuit method are applied to the analysis of a dual band frequency selective surface (FSS) based on a double square loop design. The results are compared with experimental work. Results obtained from experiments conducted were then compared with those predicted by the numerical models. Good agreement between both numerical approaches and measurement has been demonstrated. The TLM results proved to be more accurate and robust, while the equivalent circuit method remained orders of magnitude faster