Journal
IEEE ACCESS
Volume 10, Issue -, Pages 26177-26185Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2022.3155544
Keywords
Reconfigurable; reflectarray; liquid crystal; beam scan
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Funding
- Ministry of Internal Affairs and Communications in Japan [JPJ000254]
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This paper proposes a reconfigurable reflectarray (RA) using electrically biased liquid crystal (LC) to achieve beam steering at both E-plane and H-plane. By changing the equivalent relative permittivity of the liquid crystal and reflection phase, the LC RA can scan the beam in both E-plane and H-plane.
In this paper, a reconfigurable reflectarray (RA) with two-finger element composed of electrically biased liquid crystal (LC) at millimeter wave band is proposed. An orthogonal bias network is proposed and developed, which can result in changes in the equivalent relative permittivity of the liquid crystal, and reflection phase along direction x and direction y can be realized, thus beam steering at both E-plane and H-plane can be achieved. The LC RA is composed of 10 x 10 elements of 2-finger unit, a standard horn antenna is obliquely placed as feed, and radiation pattern is calculated by array synthesis and full wave simulation. It is found that beam scan at both E-plane and H-plane can be achieved. Compared with former researches of LC RA, this work introduces a simple scheme to achieve beam scan for LC RA at both E-plane and H-plane.
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