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a 2-bit programmable metasurface for dynamic beam steering applications
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نویسنده
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rezaee rezvan b. ,yazdi m. ,hosseininejad s. e.
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منبع
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مهندسي برق دانشگاه تبريز - 2021 - دوره : 51 - شماره : 2 - صفحه:277 -284
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چکیده
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This paper presents a 2bit programmable digital metasurface for realtime beam steering applications at xband. tunability of the metasurface is provided by employing a varactor in the unit cell structure to control each unit cell independently. this ability leads to achieve beam steering capability in both elevation and azimuth directions. the structure is designed so that the biasing circuit has no electrical connection to the ms ground. the equivalent circuit model of the unit cell is also presented to better investigate its physical behaviour. furthermore, the effects of number of unit cells and states of reflection phase on farfield pattern are investigated. finally, the numerical results are compared to analytical ones, where a good agreement between them is observed.
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کلیدواژه
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programmable metasurface ,beam steering ,phase profile ,varactor
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آدرس
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babol noshirvani university of technology, faculty of electrical and computer engineering, iran, babol noshirvani university of technology, faculty of electrical and computer engineering, iran, babol noshirvani university of technology, faculty of electrical and computer engineering, iran
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پست الکترونیکی
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sehosseininejad@nit.ac.ir
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A 2-bit Programmable Metasurface for Dynamic Beam Steering Applications
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Authors
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Rezaee Rezvan B. ,Yazdi M. ,Hosseininejad S. E.
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Abstract
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This paper presents a 2bit programmable digital metasurface for realtime beam steering applications at Xband. Tunability of the metasurface is provided by employing a varactor in the unit cell structure to control each unit cell independently. This ability leads to achieve beam steering capability in both elevation and azimuth directions. The structure is designed so that the biasing circuit has no electrical connection to the MS ground. The equivalent circuit model of the unit cell is also presented to better investigate its physical behaviour. Furthermore, the effects of number of unit cells and states of reflection phase on farfield pattern are investigated. Finally, the numerical results are compared to analytical ones, where a good agreement between them is observed.
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Keywords
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Programmable metasurface ,Beam steering ,phase profile ,varactor
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