Dual-beam Conformal Hologram Metasurface Leaky Wave Antenna Based On Surface Impedance Modulation

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI:10.1109/NRSC58893.2023.10152886

Nermeen A. Eltersy, H. Malhat, S. Zainud-Deen

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Abstract

In this paper, a conformal holographic metasurface antenna is investigated for X-band wireless communications. The planar array consists of periodic hexagonal patches with variable sizes. The periodicity controls the direction of the radiated beam through surface impedance modulation. Two tapered microstrip transmission lines are placed at both ends for surface wave launchers. The radiation characteristics of the planar hologram metasurface leaky wave antenna (HMLWA) are investigated. The increase in hexagonal patches cells aperture, increases the radiated gain and radiation efficiency. The peak gain is 20.4 dBi with gain bandwidth of 3 GHz with high efficiency of 87%. The periodicity selection controls the direction and number of radiated beams. Dual-beam at angles $\theta_{1}=32^{\circ}$, and $\theta_{2}=42^{\circ}$ are radiated for two different periodicities $\mathrm{P}_{1}=40$ and $\mathrm{P}_{2}=30$ at operating frequency, f=15 GHz. The effect of curvature on the radiation characteristics of the HLWA is investigated. Two conformal structures, along the longitudinal direction and the transverse direction are explained.

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基于表面阻抗调制的双波束共形全息超表面漏波天线

本文研究了一种用于x波段无线通信的共形全息超表面天线。平面阵列由不同尺寸的周期性六边形斑块组成。周期性通过表面阻抗调制控制辐射光束的方向。在两端放置两条锥形微带传输线用于表面波发射器。研究了平面全息超表面漏波天线的辐射特性。六角形贴片孔径的增加，增加了辐射增益和辐射效率。峰值增益为20.4 dBi，增益带宽为3 GHz，效率为87%。周期性选择控制着辐射光束的方向和数量。角$\theta_{1}=32^{\circ}$和$\theta_{2}=42^{\circ}$的双波束在工作频率f=15 GHz时以$\mathrm{P}{1}=40$和$\mathrm{P}{2}=30$两个不同的周期辐射。研究了曲率对高辐射阱辐射特性的影响。解释了沿纵向和横向的两种共形结构。

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2023 40th National Radio Science Conference (NRSC)

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