Design and implementation of metamaterial polarization converter with the reflection and transmission polarization conversion simultaneously. (4th March 2019)

• Record Type: Journal Article
• Authors: Li, Fengxia; Chen, Haiyan; He, Qingting; Zhou, Yang; Zhang, Li; Weng, Xiaolong; Lu, Haipeng; Xie, Jianliang; Deng, Longjiang
• Is Part Of: Journal of optics. Volume 21:Number 4(2019)
• Publication Date: 2019-03-04
• Subjects: polarization converter -- split-ring resonator (SRR) -- metamaterial; Optics -- Periodicals; 535.05
• DOI: 10.1088/2040-8986/ab0878
• Languages: English
• ISSNs: 2040-8978

Abstract

Abstract: In this paper, a metamaterial polarization converter which can transform linearly polarized (LP) wave into its orthogonal polarization in the microwave region is designed and realized for the simultaneous implementation of the reflection and transmission polarization conversion. The special polarization converter is composed of dielectric substrate sandwiched by the split-ring resonator and the slotted PEC ground. The simulation results demonstrate that the reflection cross-polarization of this converter has a significantly polarization conversion ratio (PCR) over 90% in the frequency bandwidths of 23.50–32.31 GHz, and the transmission cross-polarization of this converter has a high PCR over 95% at frequencies of 7.78 and 13.39 GHz for normal incident LP waves. The simulation results are in good agreement with the experimental ones. Furthermore, the property of reflection and transmission cross-polarization of this proposed converter is stable at low frequencies with incident angle up to 50°. The physical mechanisms of the proposed multifunction polarization converter can be elucidated by the electromagnetic resonant theory based on its current distribution. The proposed polarization converter can be functionalized by changing the parameters of the slotted PEC ground, which has a great potential to be used as a selective polarization filter.