A double layer circularly polarised radial line slot array antenna with uniform aperture illumination

Nishat Yasmin Koli, Muhammad U. Afzal, Karu P. Esselle, Raheel M. Hashmi, Md. Zahidul Islam, Sujan Shrestha

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

2 Citations (Scopus)

Abstract

In this paper, we have designed and investigated a double layer circularly polarised radial line slot array (RLSA) antenna for satellite communication. The antenna is composed of twofold radial waveguide with slots acting as radiating elements on its surface. The radiating slots are arranged in a spiral pattern on the antenna aperture. Every slot has a particular length and position. The slots are oriented in a way to intercept the radial currents on the upper waveguide. The slot lengths were varied to achieve a uniform aperture distribution. The electromagnetic power is fed from center of the lower waveguide. Numerical results show that the antenna is well matched within the operating frequency range. The far-field results indicate a peak directivity of 27 dBi at 20 GHz with a good pattern quality and lower side lobe level of -27.2 dB.

Original languageEnglish
Title of host publication2020 4th Australian Microwave Symposium (AMS)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-2
Number of pages2
ISBN (Electronic)9781728110493
ISBN (Print)9781728110509
DOIs
Publication statusPublished - 2020
Event4th Australian Microwave Symposium, AMS 2020 - Sydney, Australia
Duration: 13 Feb 202014 Feb 2020

Conference

Conference4th Australian Microwave Symposium, AMS 2020
CountryAustralia
CitySydney
Period13/02/2014/02/20

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