Scanning and Defocusing Characteristics of Microstrip Reflectarrays

Scanning and Defocusing Characteristics of Microstrip Reflectarrays

Results of an investigation on beam scanning by lateral displacement of the feed of a microstrip reflectarray are presented. Radiation pattern characteristics such as gain loss and sidelobe level degradation as a function of scan angle are discussed for different reflectarray geometries. Scanning of...

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Veröffentlicht in:IEEE antennas and wireless propagation letters 2010, Vol.9, p.163-166
1. Verfasser: Rengarajan, S.R.
Format: Artikel
Sprache:eng
Schlagworte:
Angles (geometry)
Antenna arrays
Antenna radiation patterns
Antennas
Beam scanning
Beams (radiation)
defocusing
Degradation
Displacement
feed displacement
Feeds
Gain
method of moments
Microstrip antenna arrays
microstrip patch array
Parabolic reflectors
Phase shifters
Phased arrays
Polarization
reflectarray
Reflector antennas
Scanning
Sidelobes
Space technology
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Beschreibung
Zusammenfassung:Results of an investigation on beam scanning by lateral displacement of the feed of a microstrip reflectarray are presented. Radiation pattern characteristics such as gain loss and sidelobe level degradation as a function of scan angle are discussed for different reflectarray geometries. Scanning of reflectarrays is limited to a few beamwidths, and their radiation pattern performance is found to be poorer than that of a comparable parabolic reflector antenna.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2010.2045217