Reflective Polarization Conversion with Multi-Functional, Ultrathin Metasurface for Ku- and K-Band Applications

IF 1 Q3 MULTIDISCIPLINARY SCIENCES
Ahmet Teber
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Abstract

Reflective polarization conversions with a simplistic design of an ultrathin, single-layered, and multi-functional anisotropic metasurface as a polarization converter is utilized for Ku- and K-band applications. The designs with two substrate thicknesses (0.095λ0 and 0.069λ0, respectively) are capable of a cross-polarization converter (CPC) and a linear-to-circular (LTC) polarization conversion. The design with 0.095λ0 thickness achieves a CPC between 17.96 and 26.90GHz with the efficiency of more than 90% and a relative bandwidth of 40% under normal incidence. It maintains angular stability by altering the oblique incidence angles up to 300 with greater than 80% of the PCR in the K-band. Meanwhile, an LTC in two frequency bands, 10.30-10.53GHz and 28.65-29.70GHz, is also numerically demonstrated. The second design with 0.069 λ0 thickness provides a CPC above the PCR value of 87% in the frequency range from 10.46-23.05GHz (covering the entire Ku- and part of the K-band) with angular stability of 40 above the PCR value of 80%. In the meantime, an LTC with relative bandwidth of 75% in the frequency range from 9.53-9.79&24.74-25.27GHz is numerically revealed. These polarization converters exhibit relatively good performances of facile structure and multi-functional properties, which can be useful in Ku- and K-band applications.
用于 Ku 和 K 波段应用的多功能超薄金属表面反射偏振转换器
利用超薄、单层和多功能各向异性元表面作为极化转换器的反射极化转换简易设计,用于 Ku 波段和 K 波段应用。两种衬底厚度(分别为 0.095λ0 和 0.069λ0)的设计能够实现交叉偏振转换器(CPC)和线性到圆形偏振转换器(LTC)。厚度为 0.095λ0 的设计可在 17.96 和 26.90GHz 之间实现 CPC,效率超过 90%,正常入射条件下的相对带宽为 40%。通过改变斜入射角,它能保持角度稳定性,最高可达 300 度,在 K 波段的 PCR 超过 80%。同时,还对 10.30-10.53GHz 和 28.65-29.70GHz 两个频段的 LTC 进行了数值演示。厚度为 0.069 λ0 的第二种设计在 10.46-23.05GHz 频率范围内(覆盖整个 Ku 波段和部分 K 波段)的 CPC 高于 PCR 值 87%,角度稳定性为 40,高于 PCR 值 80%。同时,在 9.53-9.79 和 24.74-25.27GHz 频率范围内,数值显示出相对带宽为 75% 的 LTC。这些偏振转换器具有结构简单、功能多样等良好性能,可用于 Ku 波段和 K 波段应用。
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来源期刊
gazi university journal of science
gazi university journal of science MULTIDISCIPLINARY SCIENCES-
CiteScore
1.60
自引率
11.10%
发文量
87
期刊介绍: The scope of the “Gazi University Journal of Science” comprises such as original research on all aspects of basic science, engineering and technology. Original research results, scientific reviews and short communication notes in various fields of science and technology are considered for publication. The publication language of the journal is English. Manuscripts previously published in another journal are not accepted. Manuscripts with a suitable balance of practice and theory are preferred. A review article is expected to give in-depth information and satisfying evaluation of a specific scientific or technologic subject, supported with an extensive list of sources. Short communication notes prepared by researchers who would like to share the first outcomes of their on-going, original research work are welcome.
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