Engineering the electrical characteristics of resonant type metamaterial transmission lines

F. Martin; J. Bonache; M. Gil; G. Sisó

doi:10.1117/12.785513

6 May 2008 Engineering the electrical characteristics of resonant type metamaterial transmission lines

F. Martin, J. Bonache, M. Gil, G. Sisó

Proceedings Volume 6987, Metamaterials III; 69870K (2008) https://doi.org/10.1117/12.785513
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

This paper is focused on the control of the electrical characteristics of resonant type metamaterial transmission lines, that is, transmission lines loaded with complementary split ring resonators (CSRRs). The key parameters of metamaterial transmission lines for microwave and millimetre wave circuit design are the characteristic impedance and the phase constant (rather than the effective magnetic permeability or dielectric permittivity). Thanks to the presence of reactive elements loading the host line, metamaterial transmission lines exhibit a major design flexibility that can be useful for circuit design purposes. Specifically, we can tailor the dispersion diagram and the characteristic impedance to some extent. By virtue of this, it is possible the design of microwave and millimetre wave components with superior performance in terms of bandwidth, or the design of multi-band components, both of interest in modern wireless communication systems. Thanks to the small electrical size of the unit cell of such lines, the resulting metamaterial-based components are also very small and fully compatible with planar technology (that is, no lumped elements are used). Different examples are provided to illustrate the possibilities of resonant type metamaterial transmission lines. This includes hybrid couplers, power dividers and phase shifters, among others. The paper includes also the theoretical foundations of the approach.

Citation Download Citation

F. Martin, J. Bonache, M. Gil, and G. Sisó "Engineering the electrical characteristics of resonant type metamaterial transmission lines", Proc. SPIE 6987, Metamaterials III, 69870K (6 May 2008); https://doi.org/10.1117/12.785513

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KEYWORDS

Metamaterials

Phase shifts

Microwave radiation

Dispersion

Split ring resonators

Dielectrics

Electrical engineering

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