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Title: An extraordinary transmission analogue for enhancing microwave antenna performance

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.
Authors:
 [1] ; ; ; ;  [2]
  1. Department of Electronics, Govt. College, Chittur, Palakkad, Kerala (India)
  2. Centre for Research in Electromagnetics and Antennas, Cochin University of Science and Technology, Cochin-22, Kerala (India)
Publication Date:
OSTI Identifier:
22492165
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 10; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; DIFFRACTION; DIPOLES; EXCITATION; FABRY-PEROT INTERFEROMETER; FINITE DIFFERENCE METHOD; HOLES; IMPEDANCE; MICROWAVE RADIATION; PERFORMANCE; TRANSMISSION