Application of CRLH Transmission Lines in Microstrip Filter

A novel narrow-band bandpass filter using metamaterials is proposed. The filter is composed of cascaded four metamaterial unit cells. We study the properties of the device theoretically and experimentally. The measured results are presented and compared with the results simulated by a high-frequency structure simulator. It is observed that the measured results are good agreement with the simulated results. The proposed filter has narrow bandwidth, low insertion loss, compact dimensions, easy fabrication, and low cost.

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

[2]  Richard W. Ziolkowski,et al.  Metamaterial special issue introduction , 2003 .

[3]  George V. Eleftheriades,et al.  Periodic analysis of a 2-D negative refractive index transmission line structure , 2003 .

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

[5]  N. Engheta,et al.  An idea for thin subwavelength cavity resonators using metamaterials with negative permittivity and permeability , 2002, IEEE Antennas and Wireless Propagation Letters.

[6]  David R. Smith,et al.  Loop-wire medium for investigating plasmons at microwave frequencies , 1999 .

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

[8]  Stewart,et al.  Extremely low frequency plasmons in metallic mesostructures. , 1996, Physical review letters.

[9]  D. Lippens,et al.  Demonstration of a backward wave in a single split ring resonator and wire loaded finline , 2004, IEEE Microwave and Wireless Components Letters.

[10]  T. Itoh,et al.  Arbitrary dual-band components using composite right/left-handed transmission lines , 2004, IEEE Transactions on Microwave Theory and Techniques.

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

[12]  T. Itoh,et al.  Composite right/left-handed transmission line metamaterials , 2004, IEEE Microwave Magazine.

[13]  A. Grbic,et al.  Overcoming the diffraction limit with a planar left-handed transmission-line lens. , 2004, Physical review letters.

[14]  T. Itoh,et al.  A novel mixed conventional microstrip and composite right/left-handed backward-wave directional coupler with broadband and tight coupling characteristics , 2004, IEEE Microwave and Wireless Components Letters.

[15]  T. Itoh,et al.  A novel composite right-/left-handed coupled-line directional coupler with arbitrary coupling level and broad bandwidth , 2004, IEEE Transactions on Microwave Theory and Techniques.

[16]  Steven A. Cummer,et al.  Simulated causal subwavelength focusing by a negative refractive index slab , 2003 .

[17]  T. Itoh,et al.  Super-compact multilayered left-handed transmission line and diplexer application , 2005, IEEE Transactions on Microwave Theory and Techniques.

[18]  T. Itoh,et al.  A reflectodirective system using a composite right/left-handed (CRLH) leaky-wave antenna and heterodyne mixing , 2004, IEEE Microwave and Wireless Components Letters.