Novel techniques to improve the GTEM chamber performance by applying metamaterial concepts on the excitation sector: The APEX characterization

In this work it is presented the analysis and characterization of different types of metamaterial patterns, such as fractal cells, Jerusalem-Cross-Pair, SRR - Split Ring Resonator and CSRR - Complementary Split Ring Resonator printed on the septum of a GTEM chamber. The main goal is to improve the chamber overall performance and to optimize it in terms of frequency for the electromagnetic compatibility analysis of integrated circuits and electronic boards. Experimental results are compared to simulated ones showing the advantages of the tuned characteristic of the patterned septum in comparison to the conventional type. This technique appears as an option for the performance optimizations of compact GTEM chambers.