Double-Lorentz Transmission Line Metamaterial and its Application to Tri-Band Devices

A. Rennings, T. Liebig, C. Caloz, I. Wolff
2007 IEEE MTT-S International Microwave Symposium Digest  
A double-Lorentz (DL) transmission line (TL) metamaterial is proposed for the first time. Both effective material parameters µ eff and ε eff of the corresponding line exhibit a Lorentz-type dispersion, hence the proposed terminology double-Lorentz. This type of TL presents the interest of being intrinsically tri-band, while the previously reported composite right/left-handed TL metamaterial is only dualband. The DL TL theory is fully derived and demonstrated experimentally by a microstrip
more » ... a microstrip implementation. The tri-band property of the DL TL is illustrated by the design of a triband λ/4 impedance transformer and a systematic design procedure is described. Index Terms-Transmission line (TL) metamaterial, composite right/left-handed (CRLH) metamaterial, Drude and Lorentz media, tri-band components, impedance transformer.
doi:10.1109/mwsym.2007.380500 fatcat:4tcllmjhrzfcdfrymsdrnoeddm