The research of an improved way of LHM realization-a renewed transmission line CRLH structure

This paper presents a renewed transmission line CRLH structure on the basis of former CRLH. A computed method is applied and this structure is found to be a RHM beneath a certain lower frequency while be an LHM above another certain higher frequency. Some other interesting phenomena occur in a special situation. With the help of some commercial computational and EM softwares, numerical and circuit simulations are used in order to verify our analysis result. The simulation results show that the renewed CRLH´s topology is a typical duplexer topology which is identical with our analysis.