Dual-Polarization Ku-Band Compact Spaceborne Antenna Based on Dual-Reflectarray Optics

Abstract

This article demonstrated an accurate analysis technique for dual-reflectarray antennas that take into account the angle of incidence of the impinging electric field on the main reflectarray cells. The reflected field on the sub and the main reflectarray surfaces is computed using Method of Moments in the spectral domain and assuming local periodicity. The sub-reflectarray is divided into groups of elements and the field radiated by each group is used to compute the incident and reflected field on the main reflectarray cells. A 50-cm demonstrator in Ku-band that provides European coverage has been designed, manufactured and tested to validate the analysis technique. The measured radiation patterns match the simulations and they fulfill the coverage requirements, achieving a cross-polar discrimination better than 25 dB in the frequency range: 12.975–14.25 GHz.

Design of a Flat-Panel Metasurface Reflectarray C-Band Antenna

“…A simulation was run in Ansys HFSS electromagnetic simulator to verify the performance of the designed metasurface reflectarray antenna. To save computation resources and simulation time, the finite-element and the boundary integral (FE-BI) domain decomposition method was applied in this work, as shown in Figure 4b [18][19][20][21]. The integration boundaries were set up around the source horn and the designed flat-panel reflectarray.…”

$8\times8\,\,Ka$ -Band Dual-Polarized Array Antenna Based on Gap Waveguide Technology

“…However, there is a big obstacle for them to be used for mm-wave band due to their huge losses for large arrays. Conversely, notable efforts have been made in the past to achieve dualpolarized antennas using other solutions, such as parabolic reflectors [7]- [8], reflectarrays [9]- [11], lenses [12]- [13], waveguide arrays [14]- [15], planar structures [16] or leaky-wave antennas [17]. These type of antennas are widely developed and studied, and they can meet some of the SATCOM on-themove requirements.…”

Investigations on low sidelobe characteristics of reflectarray antenna for W‐band wireless sensor application

“…Millimeter-wave and THz antennas, including parabolic antennas, phased array antennas, reflectarray antennas and lens antennas, have become a great interesting research hotspot and widely used in these decades. [1][2][3][4][5][6][7][8][9][10][11] Reflectarray antenna has certain advantages of parabolic antennas and phased array antennas with high efficiency, 12 low profile, and low cost for the millimeter-wave and THz detection system. According to the feeding mode, the reflectarray antenna can be divided into the onset feed and the offset feed.…”