TY - JOUR
T1 - Reflectarray Feeds Augmented With Size-Reducing GRIN Lenses for Improved Power Handling and Aperture Efficiency
AU - Whiting, Eric B.
AU - MacKertich-Sengerdy, Galestan
AU - Chaky, Ryan J.
AU - Mussman, Colin A.
AU - Campbell, Sawyer D.
AU - Werner, Pingjuan L.
AU - Werner, Douglas H.
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2023
Y1 - 2023
N2 - The feed for reflectarrays and transmitarrays is crucial for determining the overall antenna aperture efficiency, gain, and power handling. In the past, several methods, such as altering the horn shape to achieve higher modes, have been employed to modify the feed radiation pattern to improve these key parameters. However, another approach is to use gradient index (GRIN) lenses, which offer unprecedented control over the radiation pattern and can be used to shrink the overall antenna. In this paper, we demonstrate highly effective approaches for optimizing GRIN lenses to achieve different design objectives including high gain radiation with a compact feed as well as improved aperture efficiency and power handling. Additive manufacturing is employed to fabricate the lenses, and measured results agree well with simulations.
AB - The feed for reflectarrays and transmitarrays is crucial for determining the overall antenna aperture efficiency, gain, and power handling. In the past, several methods, such as altering the horn shape to achieve higher modes, have been employed to modify the feed radiation pattern to improve these key parameters. However, another approach is to use gradient index (GRIN) lenses, which offer unprecedented control over the radiation pattern and can be used to shrink the overall antenna. In this paper, we demonstrate highly effective approaches for optimizing GRIN lenses to achieve different design objectives including high gain radiation with a compact feed as well as improved aperture efficiency and power handling. Additive manufacturing is employed to fabricate the lenses, and measured results agree well with simulations.
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U2 - 10.1109/OJAP.2023.3278169
DO - 10.1109/OJAP.2023.3278169
M3 - Article
AN - SCOPUS:85160229407
SN - 2637-6431
VL - 4
SP - 546
EP - 557
JO - IEEE Open Journal of Antennas and Propagation
JF - IEEE Open Journal of Antennas and Propagation
ER -