Broadband reflectarrays made of cells with three coplanar parallel dipoles | Zendy

Florencio Rafael | Zendy; Boix Rafael R. | Zendy; Carrasco Eduardo | Zendy; Encinar José A. | Zendy; Barba Mariano | Zendy; PérezPalomino Gerardo | Zendy

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Broadband reflectarrays made of cells with three coplanar parallel dipoles

Author(s) -

Florencio Rafael,

Boix Rafael R.,

Carrasco Eduardo,

Encinar José A.,

Barba Mariano,

PérezPalomino Gerardo

Publication year - 2014

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.28171

Subject(s) - broadband , optics , bandwidth (computing) , dipole , microwave , dipole antenna , materials science , optoelectronics , dielectric , antenna (radio) , physics , engineering , electrical engineering , telecommunications , quantum mechanics

A broadband reflectarray cell made of three parallel dipoles printed on a dielectric layer is presented. A 33% bandwidth is achieved for the cell made of dipoles, which is larger than that obtained for a reference cell consisting of three stacked square patches (26%). Using this cell, a 41‐cm reflectarray antenna has been designed to produce a collimated beam at 9.5 GHz. The numerical results obtained for the reflectarray antenna made of parallel dipoles show a 1‐dB bandwidth of 19%, a 65% efficiency, 0.2 dB of losses, and low levels of cross polarization (25 dB below the maximum). These results demonstrate a high performance for the proposed reflectarray antenna made of cells with three printed dipoles. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:748–753, 2014

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