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Ultra-wideband linear-to-circular polarization converter with ellipse-shaped metasurfaces.
- Source :
-
Optics Communications . Nov2019, Vol. 451, p124-128. 5p. - Publication Year :
- 2019
-
Abstract
- Generally, a traditional method to generate circularly polarized waves faces limitations like the narrow band, bulky volume and low efficiency. In this paper, a linear-to-circular (LTC) polarization converter based on metasurface with high efficiency and maneuverable ultra-wideband is proposed. By utilizing the ellipse-shaped structure on reflective metasurface, the LTC polarization converting condition can be achieved at four closer frequencies, leading to a quite wide frequency band. The simulated results show that the axial ratio of the reflective circularly polarized wave is lower than 3 dB within the frequency band of 10.21–24.97 GHz, and a relative band reaches above 83.91%. Furthermore, the bandwidth of the polarization conversion can be sustained from 10.21 to 22.71 GHz at incident an angle of 48°. The electrical field and current flows are given to analyze the circular polarization performance. For validation, a sample is fabricated and measured; measured results and simulated results coincide with each other. The proposed LTC polarization converter is easy in terms of design and fabrication complexity, showing promising potentials in real-world circularly polarized wave generator applications. [ABSTRACT FROM AUTHOR]
- Subjects :
- *POLARIZATION (Nuclear physics)
*CIRCULAR polarization
Subjects
Details
- Language :
- English
- ISSN :
- 00304018
- Volume :
- 451
- Database :
- Academic Search Index
- Journal :
- Optics Communications
- Publication Type :
- Academic Journal
- Accession number :
- 137972553
- Full Text :
- https://doi.org/10.1016/j.optcom.2019.06.049