Novel antennas based upon extraordinary transmission metamaterial lenses

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Standard

Novel antennas based upon extraordinary transmission metamaterial lenses. / Navarro-Cia, Miguel; Beruete, M.; Falcone, F.; Sorolla, M.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8021 2011. 80210N.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harvard

Navarro-Cia, M, Beruete, M, Falcone, F & Sorolla, M 2011, Novel antennas based upon extraordinary transmission metamaterial lenses. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8021, 80210N, Radar Sensor Technology XV, Orlando, FL, United States, 25/04/11. https://doi.org/10.1117/12.883610

APA

Navarro-Cia, M., Beruete, M., Falcone, F., & Sorolla, M. (2011). Novel antennas based upon extraordinary transmission metamaterial lenses. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8021). [80210N] https://doi.org/10.1117/12.883610

Vancouver

Navarro-Cia M, Beruete M, Falcone F, Sorolla M. Novel antennas based upon extraordinary transmission metamaterial lenses. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8021. 2011. 80210N https://doi.org/10.1117/12.883610

Author

Navarro-Cia, Miguel ; Beruete, M. ; Falcone, F. ; Sorolla, M. / Novel antennas based upon extraordinary transmission metamaterial lenses. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8021 2011.

Bibtex

@inproceedings{417f0be2d3af4dc9a266cf69a83afecb,
title = "Novel antennas based upon extraordinary transmission metamaterial lenses",
abstract = "Novel antennas exhibiting directivity enhancement by using a short focal length plano-concave lens engineered by stacked subwavelength hole arrays in such a way that an effective negative index of refraction is obtained. An additional unexpected property of this design is that it opens the possibility to achieve an index close to zero, n → 0, arisen from σ- and μ-near-zero extreme values. Our original design works with evanescent modes in comparison with the well known classical metallic lenses operating with propagating modes. In our case, this leads to a negative index of refraction, whereas metallic lenses exhibit a positive but less than one index of refraction. It is demonstrated by means of a simple design based on dispersion diagram and ray tracing an easy and correct method for rather accurate results. Also, an optimization of the hole diameter or longitudinal lattice constant to achieve not only n = -1, but also free space matching is possible simultaneously. A power enhancement up to 24 dB with cross-polarization below -30 dB with regards to copolar, when the lens is applied as antenna radiation beamforming has been measured. For the case of index close to zero, n → 0, the power enhancement is 27 dB whereas the cross-polarization remains -17 dB with regards to co-polar. New improvements are under analysis in order to determine if this technology could be competitive with current state of the art of waveguide lenses and Fresnel zone plate lenses.",
keywords = "Antennas, Extraordina ry transmission, Lenses, Metamaterials, Millimeter andsubmillimeter waves, Negative refraction, Terahertz",
author = "Miguel Navarro-Cia and M. Beruete and F. Falcone and M. Sorolla",
year = "2011",
doi = "10.1117/12.883610",
language = "English",
isbn = "9780819485953",
volume = "8021",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",
note = "Radar Sensor Technology XV ; Conference date: 25-04-2011 Through 27-04-2011",

}

RIS

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T1 - Novel antennas based upon extraordinary transmission metamaterial lenses

AU - Navarro-Cia, Miguel

AU - Beruete, M.

AU - Falcone, F.

AU - Sorolla, M.

PY - 2011

Y1 - 2011

N2 - Novel antennas exhibiting directivity enhancement by using a short focal length plano-concave lens engineered by stacked subwavelength hole arrays in such a way that an effective negative index of refraction is obtained. An additional unexpected property of this design is that it opens the possibility to achieve an index close to zero, n → 0, arisen from σ- and μ-near-zero extreme values. Our original design works with evanescent modes in comparison with the well known classical metallic lenses operating with propagating modes. In our case, this leads to a negative index of refraction, whereas metallic lenses exhibit a positive but less than one index of refraction. It is demonstrated by means of a simple design based on dispersion diagram and ray tracing an easy and correct method for rather accurate results. Also, an optimization of the hole diameter or longitudinal lattice constant to achieve not only n = -1, but also free space matching is possible simultaneously. A power enhancement up to 24 dB with cross-polarization below -30 dB with regards to copolar, when the lens is applied as antenna radiation beamforming has been measured. For the case of index close to zero, n → 0, the power enhancement is 27 dB whereas the cross-polarization remains -17 dB with regards to co-polar. New improvements are under analysis in order to determine if this technology could be competitive with current state of the art of waveguide lenses and Fresnel zone plate lenses.

AB - Novel antennas exhibiting directivity enhancement by using a short focal length plano-concave lens engineered by stacked subwavelength hole arrays in such a way that an effective negative index of refraction is obtained. An additional unexpected property of this design is that it opens the possibility to achieve an index close to zero, n → 0, arisen from σ- and μ-near-zero extreme values. Our original design works with evanescent modes in comparison with the well known classical metallic lenses operating with propagating modes. In our case, this leads to a negative index of refraction, whereas metallic lenses exhibit a positive but less than one index of refraction. It is demonstrated by means of a simple design based on dispersion diagram and ray tracing an easy and correct method for rather accurate results. Also, an optimization of the hole diameter or longitudinal lattice constant to achieve not only n = -1, but also free space matching is possible simultaneously. A power enhancement up to 24 dB with cross-polarization below -30 dB with regards to copolar, when the lens is applied as antenna radiation beamforming has been measured. For the case of index close to zero, n → 0, the power enhancement is 27 dB whereas the cross-polarization remains -17 dB with regards to co-polar. New improvements are under analysis in order to determine if this technology could be competitive with current state of the art of waveguide lenses and Fresnel zone plate lenses.

KW - Antennas

KW - Extraordina ry transmission

KW - Lenses

KW - Metamaterials

KW - Millimeter andsubmillimeter waves

KW - Negative refraction

KW - Terahertz

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U2 - 10.1117/12.883610

DO - 10.1117/12.883610

M3 - Conference contribution

AN - SCOPUS:79960109002

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BT - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Radar Sensor Technology XV

Y2 - 25 April 2011 through 27 April 2011

ER -