Design of shaped-beam parabolic reflector antenna for Peninsular Malaysia beam coverage and its overlapping feed issues

Nurul H Abd Rahman, Mohammad Tariqul Islam, Yoshihide Yamada, Naobumi Michishita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Design and performance of a shaped beam 12.2 GHz array-fed reflector antenna for broadcasting satellite is presented in this paper. Initial design, employing a cluster of feed horns illuminating a parabolic reflector is initially proposed for multi beam antenna (MBA) system to produce a contoured beam for Peninsular Malaysia. The precise feed positions are determined through a newly developed ray tracing program. Due to the small size of the coverage area, an issue with regards to physical constructability of the feed horns is raised. The MBA is modified by utilizing 18-element microstrip array as the feed, where each element positions are calculated by using the same caustic model. In this case, the preceding issue is solved, and high gain shaped beam coverage with uniform aperture is generated. This paper shows the results of the contoured beam antenna that have been achieved for beam scanned over a coverage size of approximately 0.9° long and 0.5° wide. Small variation of radiation level, which is less than 3dB within the edge of coverage (EOC), is also demonstrated in the performance analysis.

Original languageEnglish
Pages (from-to)952-958
Number of pages7
JournalApplied Computational Electromagnetics Society Journal
Volume30
Issue number9
Publication statusPublished - 1 Sep 2015

Fingerprint

parabolic antennas
Multibeam antennas
reflector antennas
Malaysia
Antenna reflectors
parabolic reflectors
Antenna feeders
multibeam antennas
Ray tracing
Broadcasting
Satellites
Antennas
Radiation
broadcasting
high gain
ray tracing
illuminating
alkalies
antennas
apertures

Keywords

  • Antenna feeds
  • Arrays
  • Caustic model
  • Ray tracing
  • Reflector
  • Satellite antenna

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Electrical and Electronic Engineering

Cite this

Design of shaped-beam parabolic reflector antenna for Peninsular Malaysia beam coverage and its overlapping feed issues. / Rahman, Nurul H Abd; Islam, Mohammad Tariqul; Yamada, Yoshihide; Michishita, Naobumi.

In: Applied Computational Electromagnetics Society Journal, Vol. 30, No. 9, 01.09.2015, p. 952-958.

Research output: Contribution to journalArticle

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