Dual-polarisation reflectarray made of cells with two orthogonal sets of parallel dipoles for bandwidth and cross-polarisation improvement

被引：30

作者：

Florencio, Rafael ^{[1
]}

Encinar, Jose ^{[2
]}

Boix, Rafael R. ^{[1
]}

Perez-Palomino, Gerardo ^{[2
]}

机构：

[1] Univ Seville, Coll Phys, Dept Elect & Electromagnetism, Microwaves Grp, E-41012 Seville, Spain

[2] Univ Politecn Madrid, ETSI Telecomunicac, Electromagnetism & Circuit Theory Dept, E-28040 Madrid, Spain

来源：

IET MICROWAVES ANTENNAS & PROPAGATION | 2014年 / 8卷 / 15期

关键词：

reflectarray antennas; antenna radiation patterns; bandwidth allocation; array signal processing; antenna accessories; dipole antenna arrays; dual linear polarisation reflectarray antenna; cells; coplanar parallel dipole orthogonal sets; bandwidth improvement; cross-polarisation improvement; broadband operation; low cross-polarisation; independent beamforming; reflectarray element; phase-shift control; antenna efficiency; maximum cross-polar radiation levels; gain; 32; 9; dB; BROAD-BAND REFLECTARRAY; PHASE-SHIFTING CELL; PRINTED REFLECTARRAYS; LOOP ELEMENTS; MICROSTRIP REFLECTARRAYS; DESIGN;

D O I：

10.1049/iet-map.2014.0202

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A reflectarray antenna has been proposed to provide broadband operation, low cross-polarisation and independent beamforming in dual linear polarisation. The reflectarray element consists of two orthogonal sets of three coplanar parallel dipoles, where each set of parallel dipoles is used for controlling the phase-shift of each polarisation. A focused beam 40 cm reflectarray has been designed, manufactured and tested. According to the experimental results, the antenna shows a 27% bandwidth for a gain of 32.9 dBi with a variation of 1 dB. The antenna efficiency is better than 60% and the maximum cross-polar radiation levels are at least 30 dB below the main beam co-polar levels for both linear polarisations. In addition, it has been demonstrated that the antenna performance is maintained when it is designed to provide two separate beams in each linear polarisation.

引用

页码：1389 / 1397

页数：9

共 30 条

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