Reflectarrays (RAs) exhibit important advantages over conventional antenna arrays,
especially in terms of realizing pencil-beam patterns without the employment of the feeding …

The design and implementation of a wideband circularly polarized folded reflectarray
antenna (CPFRA) with a linearly polarized (LP) feed antenna is presented in this letter. The …

A circularly polarized (CP) multi-input multioutput (MIMO) dielectric resonator (DR) antenna
(DRA) with compact size and four ports is implemented. CP radiation was achieved using …

A broadband folded reflectarray antenna (FRA) is presented employing a novel single-layer
cross-polarization conversion (CPC) subwavelength element in this letter. The proposed …

A reflectarray antenna employing metal-only polarization rotation elements is proposed in
this letter. The element is composed of double metallic layers separated by an air gap and …

In this communication, we present a new design for a folded reflectarray antenna (FRA)
inspired by the Risley prism antenna. This innovative FRA enables circularly polarized (CP) …

This letter presents a metal-only folded reflectarray antenna, consisting of three components,
namely a pyramidal feed horn, a lower reflectarray, and an upper polarizer, which are all …

A wideband high-efficiency metal-only folded reflectarray antenna (FRA) using 3-D
subwavelength detachable trapezoidal grooved element (SDTGE) is proposed in this …

This study demonstrates a novel dual-polarized folded reflectarray (DP-FRA) integrated with
active components. Conventional FRA consists of three parts: the upper single polarizer grid …

Resonant cavity antennas (RCAs) produce reasonably high gains (15-20 dBi) with thin form
factors, and find strong applications in wireless communication. A recently proposed RCA …