Experimental demonstration of a single layer tri-band circularly polarized reflectarray

Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review

“…While a complete list would be too long to present here, approaches to achieve wideband element designs tend to focus on either coupling multiple resonances together [11]- [13] or coupling antenna elements to true time delay (TTD) lines [14]. Multi-band designs are also similarly achieved by stacking multiple resonators together [15], or overlaying resonators on the same metal layer [16]. Most recently, the use of subwavelength elements has been identified as an effective means for improving reflectarray bandwidth [17].…”

A Metasurfaces Review: Definitions and Applications

“…In the past, wavefront shaping in the microwave regime has been achieved with the help of reflect-and transmit-arrays [45,46]. Such arrays have used variable element size and rotation (in case of reflect-arrays), and aperture coupled miniaturized delay lines (with a patched ground) for the transmit-array, in order to shape the wavefronts [47,48]. Such arrays, however, have a periodicity of the order λ/4 − λ/2, therefore, they do not provide sub-wavelength resolution (sub-wavelength resolution can improve the aperture efficiency of such arrays) [31,49].…”

Reflectarray antennas for space applications

“…A two layer reflectarray with dual frequency operation was demonstrated in [13]. More notably a singlelayer tri-band circularly polarized reflectarray was demonstrated by researchers at the University of Mississippi [14]. For this design, variable size elements are used for the Cband, whereas the X-and Ka-band elements are designed using the element rotation technique.…”