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Abstract
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A novel compact ultrawideband polarization rotation
reflective surface (PRRS) with a high polarization conversion
ratio (PCR) is proposed. The 90° polarization rotation (PR) is
achieved by employing a PRRS-based diagonally symmetric unit
cell including two L-shaped strips with two vias and a centered
via-less square patch. The air-based substrate of the structure
and its overall dimensions equal to 6 × 6 × 3.3 mm3 (i.e.,
0.128λ0 × 0.128λ0 × 0.07λ0 based on the lowest frequency of
the band) provide a low-profilePRRSwith a considerable reduction
in thickness. ThePRbandwidth of the proposedPRRSis111%with
a PCR over 90%. This PRRS is also applied for radar cross section
reduction (RCSR), which provides a measured 10 dB RCSR in an
ultrawide bandwidth of about 114.4% (6.4∼23.5 GHz, covering C-,
X-, Ku-, and K-bands). A good agreement between the simulated
and measured results and a fair comparison with the state-of-theart
approaches prove the accuracy and efficiency of the proposed
design.
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