Element position perturbation for a narrow spot beam with applications to satellite communication antennas

Bukhsh, W. A. and Jonsson, B. L. G. and Persson, P. (2010) Element position perturbation for a narrow spot beam with applications to satellite communication antennas. Progress In Electromagnetics Research, 104. pp. 283-295. ISSN 1070-4698

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Abstract

Design of array antennas for satellite applications is always a trade-off between physical constrains and pattern requirements. In this paper, the focus is on the design of a large array antenna for earth coverage applications using spot beams. The array antenna has a diameter of 1 m and consists of circular polarized horn antennas positioned in a non-uniform grid. By using a binary coded genetic algorithm (BCGA) the desired element positions and their excitations are optimized to fulfill the pattern requirements. In addition thinning has been used to study the possibility of maintaining good antenna performance when reducing the number of elements. The proposed antenna design has robust side lobe level, beam width and gain; all remain virtually unchanged under a change of operating frequency ±7% and under lobe steering over earth ±8.8°.

ORCID iDs

Bukhsh, W. A. ORCID logoORCID: https://orcid.org/0000-0002-5765-0747, Jonsson, B. L. G. and Persson, P.;
  • Item type:Article
    ID code:52106
    Dates:
    Date
    Event
    2010
    Published
    Keywords:antenna design, antenna performance, array antennas, beam widths, binary coded genetic algorithms, circular polarized, large arrays, non-uniform grids, operating frequency, physical constrains, position perturbation, satellite applications, satellite communications, sidelobe levels, spot beams, Electrical engineering. Electronics Nuclear engineering, Electrical and Electronic Engineering, Condensed Matter Physics, Radiation
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:05 Mar 2015 12:37
    Last modified:20 Jan 2021 21:54
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/52106
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