Angle of Incidence Effects in Reflectarray Antenna Design: Making gain increases possible by including incidence angle effects

The subject of whether or not it is necessary to include a feed field incidence angle in the design of main reflectarrays and subreflectarrays is discussed quantitatively in this article. The performance of reflectarray designs done with and without such incidence angle effects included are compared...

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Bibliographic Details
Published inIEEE antennas & propagation magazine Vol. 58; no. 5; pp. 52 - 64
Main Authors Almajali, E'qab R.F., McNamara, Derek A.
Format Magazine Article
LanguageEnglish
Published New York IEEE 01.10.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Angle effects
Antenna feeds
Design methodology
Electromagnetic waveguides
Periodic structures
Reflection
Reflector antennas
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Summary:The subject of whether or not it is necessary to include a feed field incidence angle in the design of main reflectarrays and subreflectarrays is discussed quantitatively in this article. The performance of reflectarray designs done with and without such incidence angle effects included are compared. The additional gain is achieved if the incidence angle is indeed included in the design process. The immunity of subwavelength elements to incidence angle effects is confirmed and illustrated using individual element patterns. Subreflectarrays designed with such subwavelength elements are shown to exhibit superior performance compared to those using half-wavelength ones.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1045-9243
1558-4143
DOI:10.1109/MAP.2016.2594699