Abstract
This comment demonstrates that in our previously study on a circular-to-linear polarization converter [Applied Physics A (2018) 124:525], the handedness of the incident circularly polarized wave was erroneously demonstrated. In the proposed composite frequency selective surface structure using four patch-via-patch modules, the diagonally truncated patch actually works as a left-handed circularly polarized antenna. Hence, the top array only responds to left-handed circularly polarized wave, instead of right-handed circularly polarized wave. This erroneous demonstration also can be founded in some other reports of polarization converter associated with circularly polarized wave due to the incorrect handedness indication when the wave propagation direction is not properly set up in commercial software.
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Acknowledgements
The authors acknowledge the support of the National Natural Science Foundation of China (Grant No. 61971231), the Joint Open Research Program in Jiangsu Key Laboratory of Meteorological Observation and Information Processing and Jiangsu Technology and Engineering Center of Meteorological Sensor Network (Grant No. KDXS1808), and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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Wang, SY., Li, Y. & Bi, JD. Comment on “Circular-to-linear polarization converter based on composite via-coupled patch frequency selective surfaces”. Appl. Phys. A 126, 432 (2020). https://doi.org/10.1007/s00339-020-03607-1
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DOI: https://doi.org/10.1007/s00339-020-03607-1