Analysis on some other models of transmission lines for CRLH meta-materials

Abstract: The theme of this paper is to present and analyze two novel circuit models which can be used in the realization of composite right hand and left hand transmission line meta-materials (CRLH MTM). Along with this, the conventional circuit models which are being used in literature very extensively are also presented in two different cases namely lossy and lossless case. The main purpose of this analysis is to investigate the circuit models which give a non- linear dispersion relation or phase constant, with a maximum or minimum as a function of frequency while maintaining the low attenuation constant. It is observed that the new proposed circuit models are meeting the requirement of having no attenuation constant while having the dispersion relationship with maximum or minimum. This is proved with the mathematical expressions, giving an opportunity to explore these circuits in fabrication for practical applications.

Keywords: Transmission lines, CRLH TL, propagation constant, phase constant, attenuation constant and dispersion.