RF circuits commutator for EMC laboratories

Disadvantages and advantages of classical solutions for RF circuits commutator used in EMC laboratories equipped with anechoic chambers were presented in the article. An innovative solution of RF circuits commutator, which is dedicated for use in anechoic chambers was proposed. It is characterised with no disadvantages typical for classical solutions accessible on the market (e.g., OSP-130 commutator) resulting from placing executing (RF switches) as well as control circuits for them in one enclosure. There, in the article, the block diagram of the solution proposed was presented. Also, the results of the anechoic chamber shielding efficiency measurements were shown in the article for the location where coaxial cables penetrations are installed and connected to particular outputs of measurement sensors using the proposed solution of the RF circuits commutator. The results of comparative analysis were shown, too, for shielding efficiency of the anechoic chamber using the proposed solution as well as classical solutions of RF commutators.