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Aperture Efficiency Study of Square Reflect Array Antennas

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DOI: 10.4236/wet.2018.93006    440 Downloads   897 Views Citations


This paper presents a detailed study of square reflect array (RA) antenna aperture efficiency (ηa). Effects of quantization-phase and limited phase-range errors on radiation pattern, half-power beam width (HPBW) and ηa for different feed locations are investigated. Results show an in-crease in side-lobe levels (SLLs) and a slightly reduction in ηa with quantization-phase augmentation or element phase-range reduction, however, the effects on HPBW are negligible. Nevertheless, the degradation in ηa is negligible when the quantization-phase is lower than 30° or phase-range is more than 300°. Parametric studies have been carried out to provide design guidelines to maximize ηa. It is perceived that the offset-angle plays an important role to determine ηa, especially for feed with narrow beam width.

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Nourinia, J. , Ghobadi, C. , Mohammadi, B. and Alizadeh, F. (2018) Aperture Efficiency Study of Square Reflect Array Antennas. Wireless Engineering and Technology, 9, 66-78. doi: 10.4236/wet.2018.93006.

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