New Trends in Reflectarray and Transmitarray Antennas

Dear Colleagues,

Reflectarray and transmitarray antennas consist of arrays of elements, typically comprising hundreds or thousands of cells, illuminated by a primary feed. By modifying the physical parameters of the cells, the reflection/transmission coefficient along the array surface can be controlled, and therefore, the incident field coming from the feed can be converted to the desired radiated field. As a result, different parameters of the antenna such as beam pointing, beam shaping or polarization purity can be controlled and the performance of the system can be improved.

Today, reflectarray and transmitarray antennas have been proposed for use in many application fields, such as satellite communications, cellular systems, remote sensing, etc. With the new emerging technologies, advanced features are required in terms of broadband, dual-polarization, and beam-scanning operations, and these kinds of antennas can be used to achieve these requirements.

Prof. Dr. Manuel Arrebola
Guest Editor

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