Beam Squint Suppression in Offset-Fed Reflectarrays

A novel approach is proposed to suppress the frequency-dependent beam squint of offset-fed reflectarray patterns. The design comprises two offset feeds located at opposite ends of the reflectarray, in the plane of offset, simultaneously illuminating the reflectarray. This generates a single beam tha...

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Published in:IEEE antennas and wireless propagation letters 2013-12, Vol.12, p.587-590
Main Authors: Almajali, E., McNamara, D. A., Shaker, J., Chaharmir, M. R.
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Apertures
Beam squint suppression
Feeds
Gain
Layout
offset-fed reflectarray
Phase measurement
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description A novel approach is proposed to suppress the frequency-dependent beam squint of offset-fed reflectarray patterns. The design comprises two offset feeds located at opposite ends of the reflectarray, in the plane of offset, simultaneously illuminating the reflectarray. This generates a single beam that does not squint from the desired design direction at off-center frequencies. The concept is validated by comparing the full-wave simulated patterns to measured counterparts.
doi_str_mv 10.1109/LAWP.2013.2260124
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subjects Antenna radiation patterns
Apertures
Beam squint suppression
Feeds
Gain
Layout
offset-fed reflectarray
Phase measurement
title Beam Squint Suppression in Offset-Fed Reflectarrays
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