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2017-10-25
General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in CATR
By
Progress In Electromagnetics Research, Vol. 160, 9-17, 2017
Abstract
In this work, reflectarray antennas are proposed for their use as probes in compact antenna test ranges. For that purpose, the quiet zone generated by a single o set reflectarray is enhanced, overcoming the limitation imposed by the amplitude taper of the feed antenna. First, the near fi eld is characterized by a radiation model which computes the near eld of the reflectarray as far field contributions of each element, which are modeled as small rectangular apertures and thus taking into account the active element pattern. Then, a phase only synthesis is performed with the Levenberg-Marquardt algorithm in order to improve the size of the generated quiet zone. Due to the nature of the application, this near eld synthesis takes into account both the amplitude and phase, making it a more challenging task than an amplitude-only synthesis. The optimization is focused on flattening the amplitude while trying to preserve the phase front generated by the reflectarray.
Citation
Daniel Rodriguez Prado, Alvaro F. Vaquero, Manuel Arrebola, Marcos R. Pino, and Fernando Las-Heras, "General Near Field Synthesis of Reflectarray Antennas for Their Use as Probes in CATR," Progress In Electromagnetics Research, Vol. 160, 9-17, 2017.
doi:10.2528/PIER17072705
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