Dual Composite Right-/Left-Handed Coplanar Waveguide Transmission Line Using Inductively Connected Split-Ring Resonators

In this paper, a simple geometrical modification of the well-known split-ring resonator (SRR) topology is proposed. This modification consists of joining the opposite sides of the rings by means of an inductive connection. Due to this modification, it is possible to synthesize a dual composite right-/left-handed artificial transmission line from a host coplanar waveguide (CPW). In addition, it is quite straightforward to synthesize a dual balanced line showing a wider transmission bandwidth (around 13% for 3 GHz and 8% for 6 GHz) with this new SRR geometry. In fact, in order to design a balanced line, one must just modify the inductance of the direct connection between the rings, which can be derived from the equivalent circuit of this new ring, which is also presented in this paper. The final result is a balanced artificial CPW transmission line with a dual composite right-/left-handed behavior. In this case, the right-handed transmission band is placed below the left-handed one, and there is no frequency separation between both transmission bands.

[1]  Christophe Caloz,et al.  Study and realisation of dual-composite right/left-handed coplanar waveguide metamaterial in MMIC technology , 2008 .

[2]  Vicente E. Boria,et al.  Highly selective left-handed transmission line loaded with split ring resonators and wires , 2009 .

[3]  David D. Wentzloff,et al.  IEEE Transactions on Microwave Theory and Techniques and Antennas and Propagation Announce a Joint Special Issue on Ultra-Wideband (UWB) Technology , 2010 .

[4]  A planar D-CRLH transmission line structure and its application to leaky-wave antenna , 2010, Proceedings of the 9th International Symposium on Antennas, Propagation and EM Theory.

[5]  David R. Smith,et al.  Electromagnetic parameter retrieval from inhomogeneous metamaterials. , 2005, Physical review. E, Statistical, nonlinear, and soft matter physics.

[6]  Luis Enrique Garcia-Munoz,et al.  Dual-composite right-left-handed transmission lines for the design of compact diplexers , 2010 .

[7]  Sailing He.  Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications. By Christophe Caloz and Tatsuo Itoh. , 2007 .

[8]  T. Itoh,et al.  Characteristics of the composite right/left-handed transmission lines , 2004, IEEE Microwave and Wireless Components Letters.

[9]  Mario Sorolla,et al.  Metamaterials with Negative Parameters: Theory, Design, and Microwave Applications , 2013 .

[10]  Vicente E. Boria,et al.  Study of equivalent circuits for open-ring and split-ring resonators in coplanar waveguide technology , 2007 .

[11]  C. Caloz,et al.  Dual Composite Right/Left-Handed (D-CRLH) Transmission Line Metamaterial , 2006, IEEE Microwave and Wireless Components Letters.

[12]  Jeong-Hae Lee,et al.  DGS Dual Composite Right/LeftHanded Transmission Line , 2008, IEEE Microwave and Wireless Components Letters.

[13]  T. Itoh,et al.  Application of the transmission line theory of left-handed (LH) materials to the realization of a microstrip "LH line" , 2002, IEEE Antennas and Propagation Society International Symposium (IEEE Cat. No.02CH37313).

[14]  Jordi Bonache,et al.  Synthesis and applications of new left handed microstrip lines with complementary split-ring resonators etched on the signal strip , 2008 .

[15]  I. Gil,et al.  Metamaterials in microstrip technology for filter applications , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[16]  R. Pucel,et al.  Modeling via hole grounds in microstrip , 1991, IEEE Microwave and Guided Wave Letters.

[17]  A. Borja,et al.  A 2% Bandwidth C-Band Filter Using Cascaded Split Ring Resonators , 2010, IEEE Antennas and Wireless Propagation Letters.

[18]  A. Grbic,et al.  Experimental verification of backward-wave radiation from a negative refractive index metamaterial , 2002 .

[19]  J. Bonache,et al.  Improved circuit model for left-handed lines loaded with split ring resonators , 2008 .

[20]  Wideband Passband Transmission Line Based on Metamaterial-Inspired CPW Balanced Cells , 2011, IEEE Antennas and Wireless Propagation Letters.

[21]  F. Aznar,et al.  Applications of Open Split Ring Resonators and Open Complementary Split Ring Resonators to the Synthesis of Artificial Transmission Lines and Microwave Passive Components , 2009, IEEE Transactions on Microwave Theory and Techniques.

[22]  Ignacio Gil,et al.  On the transmission properties of left‐handed microstrip lines implemented by complementary split rings resonators , 2006 .

[23]  Tatsuo Itoh,et al.  Electromagnetic metamaterials : transmission line theory and microwave applications : the engineering approach , 2005 .

[24]  J. Bonache,et al.  Composite Right/Left-Handed Metamaterial Transmission Lines Based on Complementary Split-Rings Resonators and Their Applications to Very Wideband and Compact Filter Design , 2007, IEEE Transactions on Microwave Theory and Techniques.