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. 2019 Jun 5;12(11):1827.
doi: 10.3390/ma12111827.

Dual-Band Transmissive Cross-Polarization Converter with Extremely High Polarization Conversion Ratio Using Transmitarray

Jianxing Li  1 , Jialin Feng  2 , Bo Li  3 , Hongyu Shi  4 , Anxue Zhang  5 , Juan Chen  6   7   8
Affiliations

Dual-Band Transmissive Cross-Polarization Converter with Extremely High Polarization Conversion Ratio Using Transmitarray

Jianxing Li et al. Materials (Basel). .

Abstract

In this paper, a dual-band cross-polarization converter is proposed. The proposed device can convert linearly polarized incident waves to their cross-polarized transmitted waves. Inspired by the aperture coupled transmitarray, a transmissive multi-layered unit cell structure was designed, which can operate in two frequency bands. The designed structure can manipulate the polarization of the transmitted wave into the cross-polarization of the incident waves at 10.36 GHz and 11.62 GHz. The cross-polarized transmittance of the proposed cross-polarization converter is higher than 0.93. In addition, the transmitted wave has an extremely low co-polarized component, which results in a nearly 100% polarization conversion ratio. The two working frequencies can be tuned independently. The proposed cross-polarization converter was simulated, fabricated and measured. The simulation results confirm with the measurement results.

Keywords: cross-polarization converter; high polarization conversion ratio; transmitarray.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Geometry of the unit cell: (a) Layer-1. (b) Layer-2. (c) Layer-3. (d) Layer-4. (e) Layer-5. (f) Side view.
Figure 2
Figure 2
(a) The simulated cross-polarized transmittance and reflectance. (b) The simulated co-polarized transmittance.
Figure 3
Figure 3
The simulated polarization conversion ratio.
Figure 4
Figure 4
Simulation results with different a: (a) The simulated cross-polarized transmittance and reflectance. (b) The simulated co-polarized transmittance.
Figure 5
Figure 5
The simulated polarization conversion ratios with different a.
Figure 6
Figure 6
Simulation results with different w: (a) The simulated cross-polarized transmittance and reflectance. (b) The simulated co-polarized transmittance.
Figure 7
Figure 7
The simulated polarization conversion ratios with different w.
Figure 8
Figure 8
Simulation results with different incident angles: (a) The simulated cross-polarized transmittance and reflectance. (b) The simulated co-polarized transmittance.
Figure 9
Figure 9
The fabricated sample of the cross-polarized converter: (a) Top view of the sample. (b) Side view of the sample.
Figure 10
Figure 10
Photo of the measurement setup.
Figure 11
Figure 11
(a) The measured and simulated cross-polarized transmittances and reflectances. (b) The measured and simulated co-polarized transmittances.
Figure 12
Figure 12
The polarization conversion ratio calculated from the measured results.
See this image and copyright information in PMC

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