Effect of unit cell arrangements in near field transformation lattice on aperture efficiency of resonant cavity antenna

Sujan Shrestha, Bahare Mohamadzade, Affan A. Baba, Raheel M. Hashmi

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

Near field phase transformation lattice structure is presented to correct the electric field phase variation above a source antenna. A high gain resonant cavity antenna (RCA) is used as a source, which operates at 12 GHz. The 3D printed phase transformation structure, with two different arrangements of the unit cells, is designed above the RCA at the one-eighth of wavelength. The rectangular arrangement exhibits a more uniform field distribution than that of the circular arrangement. Additionally, in the rectangular arrangement, the gain of the antenna is enhanced by 2.11dB from 21.98 to 24.09 dBi, whereas in the circular arrangement, this value increased by 2.08 dB from 21.98 to 24.06 dBi. For both the cases, the aperture efficiency and bandwidth aperture efficiency product (BAEP) increased from 34.24 to 55.78% and 55.024 to 109.33%2 , respectively.
Original languageEnglish
Title of host publicationProceedings of the 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages0370-0371
Number of pages2
ISBN (Electronic)9781728105635, 9781728105628
ISBN (Print)9781728105642
DOIs
Publication statusPublished - 2019
Event21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019 - Granada, Spain
Duration: 9 Sep 201913 Sep 2019

Conference

Conference21st International Conference on Electromagnetics in Advanced Applications, ICEAA 2019
CountrySpain
CityGranada
Period9/09/1913/09/19

Keywords

  • Near Field Transformation Lattice
  • 3D printing
  • Resonant Cavity Antenna

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