A simple LTCC balun for WLAN applications using left-handed (LH) transmission lines (TL)

This paper reports on the design of a novel LC balun based on a replacement circuit of right-handed (RH) and left-handed transmission lines in combination. This approach gives a very simple balun structure with excellent broadband performance. The balun is designed for WLAN applications in the 5 GHz ISM band. Concept of the balun, simulation, realisation and measurement results are presented.