Malherbe, J.A.G., 1940-Reid, C.A.2011-05-102011-05-102010-04Malherbe, JAG & Reid, CA 2010, 'Double resonant stub bandstop filter with pseudo-elliptic response', Electronics Letters, vol. 46, no. 7, pp. 508-509. [http://www.ietdl.org/EL]0013-51941350-911X (online)10.1049/el.2010.0100http://hdl.handle.net/2263/16511A simple wideband bandstop filter that yields equal ripples in both the pass and stop bands, is described. The filter comprises only of two resonant stubs and a connecting transmission line and has a transmission response almost identical to that of a third order elliptic function filter. The practical bandwidth is limited to 130-160%.en© The Institution of Engineering and Technology 2010. This paper is a postprint of a paper submitted to and accepted for publication in Electronic Letters and is subject to Institution of Engineering. This paper is a postprint of a paper submitted to and accepted for publication in Electronic Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.TransmissionResponseWidebandFilterEqual ripplesElectric filtersBroadband communication systemsPostprint Article