An extraordinary transmission analogue for enhancing microwave antenna performance

Sarin Valiyaveettil Pushpakaran; Jayakrishnan Methapettyparambu Purushothama; Aanandan Chandroth; Mohanan Pezholil; Vasudevan Kesavath

doi:10.1063/1.4935193

An extraordinary transmission analogue for enhancing microwave antenna performance

Sarin Valiyaveettil Pushpakaran, Jayakrishnan Methapettyparambu Purushothama, Aanandan Chandroth, Mohanan Pezholil, Vasudevan Kesavath

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The theory of diffraction limit proposed by H.A Bethe limits the total power transfer through a subwavelength hole. Researchers all over the world have gone through different techniques for boosting the transmission through subwavelength holes resulting in the Extraordinary Transmission (EOT) behavior. We examine computationally and experimentally the concept of EOT nature in the microwave range for enhancing radiation performance of a stacked dipole antenna working in the S band. It is shown that the front to back ratio of the antenna is considerably enhanced without affecting the impedance matching performance of the design. The computational analysis based on Finite Difference Time Domain (FDTD) method reveals that the excitation of Fabry-Perot resonant modes on the slots is responsible for performance enhancement.

Original language	English
Article number	107239
Journal	AIP Advances
Volume	5
Issue number	10
DOIs	https://doi.org/10.1063/1.4935193
Publication status	Published - Oct 2015

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10.1063/1.4935193Licence: CC BY

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abstract = "The theory of diffraction limit proposed by H.A Bethe limits the total power transfer through a subwavelength hole. Researchers all over the world have gone through different techniques for boosting the transmission through subwavelength holes resulting in the Extraordinary Transmission (EOT) behavior. We examine computationally and experimentally the concept of EOT nature in the microwave range for enhancing radiation performance of a stacked dipole antenna working in the S band. It is shown that the front to back ratio of the antenna is considerably enhanced without affecting the impedance matching performance of the design. The computational analysis based on Finite Difference Time Domain (FDTD) method reveals that the excitation of Fabry-Perot resonant modes on the slots is responsible for performance enhancement.",

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AU - Methapettyparambu Purushothama, Jayakrishnan

AU - Chandroth, Aanandan

AU - Pezholil, Mohanan

AU - Kesavath, Vasudevan

PY - 2015/10

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AB - The theory of diffraction limit proposed by H.A Bethe limits the total power transfer through a subwavelength hole. Researchers all over the world have gone through different techniques for boosting the transmission through subwavelength holes resulting in the Extraordinary Transmission (EOT) behavior. We examine computationally and experimentally the concept of EOT nature in the microwave range for enhancing radiation performance of a stacked dipole antenna working in the S band. It is shown that the front to back ratio of the antenna is considerably enhanced without affecting the impedance matching performance of the design. The computational analysis based on Finite Difference Time Domain (FDTD) method reveals that the excitation of Fabry-Perot resonant modes on the slots is responsible for performance enhancement.

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An extraordinary transmission analogue for enhancing microwave antenna performance

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