Efficient electromagnetic characterization of a 1D reconfigurable periodic configuration in microstrip technology

Application of the Synthetic Function eXpansion (SFX) algorithm to the analysis of active, reconfigurable 1D structures is presented. The reference structure consists of a passive configuration of parallel patches periodically loading a microstrip line. The active counterpart is obtained by inserting a pair of 2 switches to the two ends of each patch. The matching and radiation characteristics of a 24-element arrays for different lateral shifts of the patches demonstrates possibility of controlling the aforementioned parameters.