Abstract
In recent years, the metamaterial has become a popular and powerful tool in the electromagnetic polarization conversion design. In this paper, a flexible and transparent broadband cross-polarization-converter (CPC) was designed, fabricated and tested. ANSYS HFSS was used for the cross-polarization-converter simulation, and the Floquet port and master-slave boundary condition were set in the software. The multi-layer split-ring-resonator (SRR) structure was used to form the metamaterial for the CPC. As a result, >77% polarization conversion ratio (PCR) was achieved in the range of (7.8-18.2) GHz, with little change within 45° incident angle. The experimental results were consistent with the simulation data.
Highlights
T HE cross-polarization-converter (CPC) is one of the key members in the family of electromagnetic (EM) wave manipulation devices [1]–[4], and has a wide range of applications in areas including anti-interference, analytical chemistry, biology, communication, imaging, and so on
ANSYS High Frequency Structure Simulator (HFSS) 15.0 was used for the cross-polarizationconverter spectrum simulation, and the Floquet port, masterslave boundary condition and adaptive meshing were set in the software. [19], [20]
Structures are of different sizes for each layer, and used indium tin oxide (ITO) as the conductor, polyethylene terephthalate (PET) as the dielectric
Summary
T HE cross-polarization-converter (CPC) is one of the key members in the family of electromagnetic (EM) wave manipulation devices [1]–[4], and has a wide range of applications in areas including anti-interference, analytical chemistry, biology, communication, imaging, and so on. To extend the bandwidth, stacking multiple layers of complementary structures are generally required [8]–[10] Another concern is how to maintain excellent polarization conversion ratio (PCR) with large incident angle range [11]. More efforts have focused on miniaturized polarization converters with higher conversion efficiency and wider bandwidth or multiband and more efforts have focused on miniaturized polarization converters with higher conversion efficiency and wider bandwidth or multi-band [16]–[18]. This has become an urgent need for practical applications. The CPC has high optical transparency and good mechanical flexibility
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