Limitations and Solutions of Resonant-Type Metamaterial Transmission Lines for Filter Applications: the Hybrid Approach
- 1 January 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
In this work, the main limitations of resonant-type left handed transmission lines for filter applications are pointed out. Naturally, microstrip lines periodic loaded with series capacitive gaps and complementary split rings resonators (CSRRs) exhibit a band pass behavior with backward wave propagation in the allowed band. Cell dimensions and selectivity at the lower band edge are satisfactory. However, the upper transition band, in-band losses and bandwidth should be improved for the competitiveness and applicability of these devices. It is shown in this contribution that by introducing grounded inductive stubs to the basic cell, the previous limitations can be overcome. Actually the resulting structure is a combination of the CSRR-based (i.e. resonant-type) left handed line and the dual transmission line concept. For this reason this approach has been termed as the hybrid approach. Its advantages and potentialities for the design of small size high performance band pass filter are highlighted, and several prototype device examples are provided to illustrate the achievable performanceKeywords
This publication has 9 references indexed in Scilit:
- On the transmission properties of left‐handed microstrip lines implemented by complementary split rings resonatorsInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2006
- Novel microstrip bandpass filters based on complementary split-ring resonatorsIEEE Transactions on Microwave Theory and Techniques, 2006
- Equivalent-circuit models for split-ring resonators and complementary split-ring resonators coupled to planar transmission linesIEEE Transactions on Microwave Theory and Techniques, 2005
- Babinet Principle Applied to the Design of Metasurfaces and MetamaterialsPhysical Review Letters, 2004
- Effective negative-/spl epsiv/ stopband microstrip lines based on complementary split ring resonatorsIEEE Microwave and Wireless Components Letters, 2004
- Split ring resonator-based left-handed coplanar waveguideApplied Physics Letters, 2003
- Application of the transmission line theory of left-handed (LH) materials to the realization of a microstrip "LH line"Published by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Negative refractive index metamaterials supporting 2-D wavesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Magnetism from conductors and enhanced nonlinear phenomenaIEEE Transactions on Microwave Theory and Techniques, 1999