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High gain transmitarray antenna based on ultra-thin metasurface

机译:基于超薄超表面的高增益发射阵列天线

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This article presents a bandwidth enhanced transmitarray (TA) antenna based on ultra-thin metasurface (MS) for high gain operating at X-band. The antenna consists of a three layers continuous flat structure and an aperture coupled microstrip antenna as the feed source. The relative phase shift of 360 degrees is achieved by the unit cell design based on ultra-thin MS, and the quasi-spherical wave could be focused as plane wave when the wave goes through TA. The aperture coupled microstrip feed is designed with a bandwidth of 20.6%, and the bandwidth enhanced property of feed source will reduce the negative effect of elements mutual coupling on TA and increase the bandwidth of the TA antenna. The TA antenna gain increases from 8.25 to 18.98 dB and with a side lobe level of -14.3 dB. Owing to the low-profile and easy configuration, this kind of TA antenna has great potential, wireless communication.
机译:本文提出了一种基于超薄超颖表面(MS)的带宽增强型发射阵列(TA)天线,用于在X波段工作的高增益。该天线由三层连续的扁平结构和一个孔径耦合的微带天线作为馈电源组成。通过基于超薄MS的晶胞设计可实现360度的相对相移,当波通过TA时,准球形波可以聚焦为平面波。孔径耦合微带馈源的带宽设计为20.6%,馈源的带宽增强特性将减少元件相互耦合对TA的负面影响,并增加TA天线的带宽。 TA天线增益从8.25 dB增加到18.98 dB,旁瓣电平为-14.3 dB。由于外形小巧且易于配置,这种TA天线具有巨大的潜力,即无线通信。

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