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International Journal of Antennas and Propagation
Volume 2017, Article ID 1592783, 5 pages
Research Article

CRLH Transmission Lines for Telecommunications: Fast and Effective Modeling

School of Information Engineering, Communication University of China, Beijing 100024, China

Correspondence should be addressed to Juanjuan Gao; moc.621@9891_jjoag

Received 19 August 2016; Revised 21 November 2016; Accepted 15 December 2016; Published 4 January 2017

Academic Editor: Davide Ramaccia

Copyright © 2017 Juanjuan Gao and Guizhen Lu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A different parameter extraction approach based on zero immittances for composite right/left-handed (CRLH) structure is presented. For lossless unit cell equivalent circuit model, LC parameters of series and parallel branches are extracted according to series resonance frequency and parallel resonance frequency, respectively. This approach can be applied to symmetric and unbalanced CRLH structures. The parameter extraction procedure is provided and validated by T-type unit cell model. The responses of distributed prototype and extracted equivalent LC circuit model are in good agreement. The equivalent circuit modeling can improve the degree of freedom in the CRLH TLs design. This parameter extraction method provides an effective and straightforward way in CRLH metamaterials design and applications in telecommunication systems.