Bandwidth comparison of rectangular and offset cross‐slot frequency‐selective surface polarisation transformers
نویسندگان
چکیده
This letter compares the 3 dB axial ratio (AR) bandwidth (BW) of transmission mode single-screen linear-to-circular polarisation convertors based on three different slot topologies. Using a conventional centre-connected cross-slot arrangement as baseline, we show that significant performance improvement can be achieved by creating more elaborate design with unit cells composed multiple unequal length offset rectangular-shaped apertures. The additional flexibility to tailor shape Transverse Electric (TE) and Magnetic (TM) spectral amplitude phase responses is exploited achieve an 84% increase in BW relative baseline for freestanding structure, which designed work at centre frequency 10.0 GHz. Experimental AR results are used verify new methodology.
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ژورنال
عنوان ژورنال: Electronics Letters
سال: 2021
ISSN: ['0013-5194', '1350-911X']
DOI: https://doi.org/10.1049/ell2.12141