A Reconfigurable Broadband Polarization Converter Based on an Active Metasurface
| العنوان: | A Reconfigurable Broadband Polarization Converter Based on an Active Metasurface |
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| المؤلفون: | Xin Hua Yu, Qiang Cheng, Tie Jun Cui, Xi Gao, Hui Feng Ma, Wanli Yang |
| المصدر: | IEEE Transactions on Antennas and Propagation. 66:6086-6095 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Physics, business.industry, Metamaterial, 020206 networking & telecommunications, Biasing, 02 engineering and technology, 021001 nanoscience & nanotechnology, Polarization (waves), 0202 electrical engineering, electronic engineering, information engineering, Optoelectronics, Equivalent circuit, Electrical and Electronic Engineering, Wideband, 0210 nano-technology, business, Varicap, Circular polarization, Diode |
| الوصف: | We propose an active metasurface whose functionalities can be dynamically switched among linear-to-linear, linear-to-elliptical, and linear-to-circular polarization conversions in a wideband. The active metasurface is composed of butterfly-shaped unit cells embedded with voltage-controlled varactor diodes. By controlling the bias voltage of the varactor diodes, the electromagnetic responses of the proposed metasurface can be tailored, leading to reconfigurable polarization conversions. The simulation results reveal that with no bias voltage, the proposed metasurface is able to reflect linear-polarization waves to cross-polarization waves in the frequency range from 3.9 to 7.9 GHz, with a polarization conversion ratio of over 80%; however, at the bias voltage of −19 V, the metasurface is tuned to be a circular polarization converter in a wideband from 4.9 to 8.2 GHz. Moreover, two equivalent circuits along the $x$ - and $y$ -directions are developed to elucidate the tunable mechanism. The experimental results are in a good agreement with the simulation results obtained from commercial software and from the equivalent circuit model. |
| تدمد: | 1558-2221 0018-926X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::235e38b67e1f9b54b82ff8b6508ba77b https://doi.org/10.1109/tap.2018.2866636 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........235e38b67e1f9b54b82ff8b6508ba77b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15582221 0018926X |
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