REFLECTARRAYS OF RECTANGULAR MICROSTRIP PATCHES FOR DUAL-POLARIZATION DUAL-BEAM RADAR INTERFEROMETERS | Zendy

S.R. Rengarajan | Zendy

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REFLECTARRAYS OF RECTANGULAR MICROSTRIP PATCHES FOR DUAL-POLARIZATION DUAL-BEAM RADAR INTERFEROMETERS

Author(s) -

S.R. Rengarajan

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier12091615

Subject(s) - dual polarization interferometry , astronomical interferometer , dual (grammatical number) , radar , optics , microstrip , polarization (electrochemistry) , radar systems , microstrip antenna , interferometry , acoustics , physics , telecommunications , computer science , chemistry , antenna (radio) , art , literature

Microstrip re∞ectarrays consisting of rectangular patches are investigated for application in space-based dual-polarized dual- beam radar interferometers. For nadir looking beams the angle of incidence of feed radiation in each patch is nominally 45 - . In such an application, square-patch re∞ectarrays can be designed for only one polarization with a sacriflce in performance in the other whereas re∞ectarrays consisting of rectangular patches may be designed for both polarizations, thereby improving their radiation performance. Piecewise planar parabolic re∞ectarrays consisting of square patches exhibit poor scan performance in tilted conflguration. It is shown that with the use of rectangular patches in such a re∞ectarray one can design two beams of difierent polarizations for two ofiset feeds, thereby providing signiflcant improvement in bandwidth and radiation performance.

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