Diseño de filtros banda rechazada usando Defected Ground Structures (DGS)

In this paper a type of Defected Ground Structure (DGS) is studied and used to implement filters in microstrip technology. It is first demonstrated that the main parameter which controls its operation is the external perimeter, and that the periodicity is no longer required in order to achieve a filtering response. These two important conclusions are used to fabricate filters comparable to others already made by other authors, which are constrained to equal unit cells and a periodic distribution of them.