Abstract
In this paper, we describe the operation principle of a reconfigurable transmitarray antenna(TA) using a transmissive metasurface (MS) and introduce state-of-the-art technology trends. The TA comprises a source antenna; further, the design of a planar MS allows for the control of the wave front from the feed source when the MS exhibits a good transmittance and a full transmission phase variation of 360°. When the MS varies the phase of the transmitted wave passing through the MS such that it is in-phase at the normal plane of the desired direction, a highly directive beam can be obtained in this direction. Two types of methods can be employed to achieve beam steering in the desired direction. One is to control the shape of the transmission phase using an active MS with a changeable transmission phase variation. The other is to control the shape of the transmission phase by varying the wave front of the feed source. The reconfigurable TA has been intensively researched to achieve high efficiency, low-profile, and low-cost performance; further, the implementation and characteristics of various reconfigurable high-gain TAs are analyzed in this study.
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