Dual-band band stop filter based on complementary split ring resonator

This paper describes the design of dual-band band stop filter (DBBSF). This architecture use complementary split ring resonator to tune the band stop frequencies and the filter characteristics are improved using three open stubs. The CSRR is used to reject two frequency responses at 2.45GHz and 5.8GHz, operating in the Industrial Scientific Medical (ISM), and the open stubs are employed to improve the return loss between the two frequency responses. To validate the design concept, a prototype of DBBSF was fabricated and evaluated. The measured frequency responses agree well with the simulation results, validating our proposed design. © 2016 IAMOT.