Analysis and design of Superconducting left-handed transmission lines

In this paper, for the first time, we study the properties of a superconductive-based left-handed transmission line (SLHTL). The effect of the kinetic inductance on the propagation constant of the left-handed transmission line is analyzed. It is shown that increasing the kinetic inductance decreases both the bragg frequency and the negative index frequency band of a distributed LHTL. A Coplanar waveguide structure is proposed to realize the LHTL. It is shown that the CPW structure has the capability of increasing the kinetic inductance of the TL by narrowing the spacing between the line and the ground plane because they are deposited on the same side of the substrate. This was not possible in a microstrip line as the spacing between the line and the ground is equal to the substrate thickness and is usually fixed. Furthermore, the dependency of the kinetic inductance to the bias current has been employed to design a tunable SLHTL. Possible applications of the tunable SLHTL in the design of miniaturized tunable resonators and filters are discussed.

[1]  G. Eleftheriades,et al.  Negative refractive index metamaterials supporting 2-D waves , 2002, IEEE MTT-S International Microwave Symposium Digest.

[2]  Willie J Padilla,et al.  Composite medium with simultaneously negative permeability and permittivity , 2000, Physical review letters.

[3]  V. Veselago.  The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ , 1968 .

[4]  G. Eleftheriades,et al.  Planar negative refractive index media using periodically L-C loaded transmission lines , 2002 .

[5]  R. R. Mansour,et al.  A miniaturized ring resonator using a left-handed transmission line section , 2004, 2004 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference.

[6]  N. Engheta,et al.  Metamaterials with negative permittivity and permeability: background, salient features, and new trends , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[7]  Electrical tuning of the kinetic inductance of high temperature superconductors , 1994 .

[8]  R. Simons.  Coplanar waveguide circuits, components, and systems , 2001 .

[9]  K. Delin,et al.  Foundations of Applied Superconductivity , 1991 .

[10]  David R. Smith,et al.  Reversing Light: Negative Refraction , 2004 .

[11]  T. Itoh,et al.  Novel microwave devices and structures based on the transmission line approach of meta-materials , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.

[12]  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).

[13]  R. Shelby,et al.  Experimental Verification of a Negative Index of Refraction , 2001, Science.

[14]  J. Pendry,et al.  Negative refraction makes a perfect lens , 2000, Physical review letters.

[15]  R. Ziolkowski,et al.  Wave propagation in media having negative permittivity and permeability. , 2001, Physical review. E, Statistical, nonlinear, and soft matter physics.