期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 71, 期 6, 页码 5422-5427出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2023.3262969
关键词
Dual-polarized reflectarray; reflectarrays; tightly coupled reflectarrays; wideband reflectarrays
In this paper, a new tightly coupled dual-polarized reflectarray antenna is proposed, which consists of a dual-polarized feed antenna and a wideband dual-polarized reflecting surface. The reflecting surface is composed of dual-polarized tightly coupled unit cells, each containing two types of elements with perpendicular polarizations. The design is verified through simulation, manufacturing, and measurement, showing good agreement between simulated and measured results, with stable radiation patterns in the operating band.
In this communication, a novel tightly coupled dualpolarized reflectarray antenna is presented. The antenna consists of a dual-polarized feed antenna and a wideband dual-polarized reflecting surface. The reflecting surface is composed of dual-polarized tightly coupled unit cells. Each unit cell contains two types of elements, of which the polarizations are perpendicular. Each element contains a dipole and a delay line. For one polarization, the reflecting surface consists of 13 x 34 elements, while there are 26 x 11 elements on the reflecting surface for the other polarization. The feed antenna is a wideband dualpolarized horn antenna. The phase error distribution on the reflecting surface is analyzed as well. To verify the design, a prototypical tightly coupled dual-polarized reflectarray antenna operating from 3 to 8 GHz is simulated, manufactured, and measured. The simulated results are in good agreement with the measured results. In the working band, the radiation patterns of the proposed reflectarray antenna are stable.
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