A wide dual band stop-band filter with two different defected microterip structures

Abstract

A wide dual band stop-band filter with two different defected microstrip structures (DMS) is proposed for rejecting unexpected interferences. The two stop bands are implemented by using different types of the DMSs, while the wide band characteristics is realized by the use of two same DMS with different dimensions. The proposed wide dual band stop-band filter is investigated by the HFSS and the simulation results show that the proposed filter can provide two wide stop bands. The center frequencies of the two stop bands can be adjusted by properly choosing the dimensions of the DMSs.