%0 Journal Article
%T Aperture Efficiency Study of Square Reflect Array Antennas
%A Javad Nourinia
%A Changiz Ghobadi
%A Bahman Mohammadi
%A Farzad Alizadeh
%J Wireless Engineering and Technology
%P 66-78
%@ 2152-2308
%D 2018
%I Scientific Research Publishing
%R 10.4236/wet.2018.93006
%X This paper presents a detailed study of square reflect array (RA) antenna aperture efficiency (<i>¦Ç<sub>a</sub></i>). Effects of quantization-phase and limited phase-range errors on radiation pattern, half-power beam width (HPBW) and <i>¦Ç<sub>a</sub></i> for different feed locations are investigated. Results show an in-crease in side-lobe levels (SLLs) and a slightly reduction in <i>¦Ç<sub>a</sub></i> with quantization-phase augmentation or element phase-range reduction, however, the effects on HPBW are negligible. Nevertheless, the degradation in <i>¦Ç<sub>a</sub></i> is negligible when the quantization-phase is lower than 30¡ã or phase-range is more than 300¡ã. Parametric studies have been carried out to provide design guidelines to maximize <i>¦Ç<sub>a</sub></i>. It is perceived that the offset-angle plays an important role to determine <i>¦Ç<sub>a</sub></i>, especially for feed with narrow beam width.
%K Aperture Efficiency
%K Limited Phase-Range Error
%K Quantization-Phase Error
%K Reflect array Antennas
%K Square Aperture
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=86087