TY - JOUR
T1 - Angularly Stable Linear-to-Circular Polarizing Reflectors for Multiple Beam Antennas
AU - Mercader-Pellicer, Salvador
AU - Tang, Wenxing
AU - Bresciani, Daniele
AU - Legay, Hervé
AU - Fonseca, Nelson J. G.
AU - Goussetis, George
N1 - Funding Information:
Manuscript received February 15, 2020; revised November 15, 2020; accepted December 15, 2020. Date of publication January 8, 2021; date of current version August 4, 2021. This work was supported in part by the European Space Agency under Contract 4000107415/12/NL/MH and in part by the European Commission through the REVOLVE Project under Grant 722840. (Corresponding author: Salvador Mercader-Pellicer.) Salvador Mercader-Pellicer was with the School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, U.K. He is now with Airbus DS, Stevenage SG1 2AS, U.K. (e-mail: [email protected]).
Publisher Copyright:
© 2021 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
PY - 2021/8
Y1 - 2021/8
N2 - In this article, a new concept to improve the angular stability of linear-to-circular polarizing reflectors is presented. It is first explicitly demonstrated that existing design approaches heavily rely on the adjustment of the design stack-up, namely, the substrate height and relative permittivity, to the desired operating frequency. An approach is then proposed for decoupling the performance from the substrate parameters. The proposed approach provides increased design flexibility, resulting in performance improvement. Insight on the operating principle is provided resorting to equivalent circuit models. Subsequently, the benefits of the angularly stable reflection polarizer are demonstrated by a practical example involving a multiple beam antenna implemented using materials and processes compatible with satellite missions. The antenna exploits an innovative quasi-optical beamformer as primary feed combined with a cylindrical polarizing reflector. Numerical and experimental results from this antenna architecture are presented to confirm the improvements achieved with the proposed concept over existing designs. The close comparison of simulations with measurements that are achieved validates the concept and the design approach.
AB - In this article, a new concept to improve the angular stability of linear-to-circular polarizing reflectors is presented. It is first explicitly demonstrated that existing design approaches heavily rely on the adjustment of the design stack-up, namely, the substrate height and relative permittivity, to the desired operating frequency. An approach is then proposed for decoupling the performance from the substrate parameters. The proposed approach provides increased design flexibility, resulting in performance improvement. Insight on the operating principle is provided resorting to equivalent circuit models. Subsequently, the benefits of the angularly stable reflection polarizer are demonstrated by a practical example involving a multiple beam antenna implemented using materials and processes compatible with satellite missions. The antenna exploits an innovative quasi-optical beamformer as primary feed combined with a cylindrical polarizing reflector. Numerical and experimental results from this antenna architecture are presented to confirm the improvements achieved with the proposed concept over existing designs. The close comparison of simulations with measurements that are achieved validates the concept and the design approach.
KW - Frequency-selective surfaces (FSSs)
KW - Linear-to-circular (LP-to-CP) polarizers
KW - Multiple beam antennas (MBAs)
KW - Reflector antennas
UR - http://www.scopus.com/inward/record.url?scp=85099593578&partnerID=8YFLogxK
U2 - 10.1109/TAP.2020.3048494
DO - 10.1109/TAP.2020.3048494
M3 - Article
AN - SCOPUS:85099593578
SN - 0018-926X
VL - 69
SP - 4380
EP - 4389
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 8
ER -