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Wideband linear cross-polarization conversion with 3D metamaterial configuration
Optics Letters
|January 13, 2023
Summary
This study introduces a novel 3D resonator for broadband and wide-angle linear polarization conversion. The device achieves over 90% efficiency across a wide frequency range and incident angles, offering miniaturization advantages.
Area of Science:
- Electromagnetics and Optics
- Metamaterials and Nanophotonics
Background:
- Linear polarization converters are crucial components in various electromagnetic applications.
- Traditional planar structures often suffer from limited bandwidth and angular stability.
Purpose of the Study:
- To design and demonstrate a broadband and wide-angle linear polarization converter using a 3D resonator.
- To achieve high polarization conversion ratio (PCR) and efficiency over a wide frequency and angular range.
Main Methods:
- A novel 3D resonator structure was designed for cross-polarization conversion (CPC).
- The structure was fabricated using the multi-material hybrid microdroplet jetting modeling (MHMJM) technique.
- Experimental results were compared with simulated data.
Main Results:
- Achieved a PCR of over 90% in the 16.32 to 34.12 GHz frequency range (70.6% relative bandwidth).
- Maintained over 90% CPC efficiency for incident angles up to 40°.
- The proposed 3D structure exhibits a miniaturized cell size of 0.18λ.
Conclusions:
- The proposed 3D resonator offers significant advantages in bandwidth, wide-angle performance, and miniaturization compared to planar designs.
- The MHMJM fabrication technique enables accurate realization of the complex 3D structure.
- This advanced polarization converter is suitable for next-generation microwave and millimeter-wave systems.
