High-order coplanar waveguide (CPW) filters implemented by means of open split ring resonators (OSRRs) and open complementary split ring resonators (OCSRRs)

► A combination of OSRRs and OCSRRs are applied for the design of high-order filters. ► The filter belongs to the category of metamaterial inspired filters. ► The device is compact and filter performance is good with a wide stopband response.