论文标题
朝卫星网络的双波频重新配置的超材料表面
Towards Dual-band Reconfigurable Metamaterial Surfaces for Satellite Networking
论文作者
论文摘要
最近部署了用于互联网服务的第一个低地球轨道卫星网络，并且规模不断增长，但在许多实际情况下，将面临部署挑战。本文探讨了双波段，电子可调的智能表面如何使卫星和移动用户之间的动态光束对齐，使城市峡谷中的服务成为可能，并改善农村地区的服务。我们的设计是第一个采用新颖的双Huygens谐振器设计来瞄准KU射频频段中的双通道的第一个，它利用无线电互惠互相互相，以使我们的表面同时引导和调节卫星上链路上的能量和下链路链路链路链路上的指示，并且在反射性和传播操作模式中都可以。我们的表面Wall-E在电磁模拟器中进行了设计和评估，并显示了94％的传输效率和85％的反射效率，在150度的视野中，最多在转向角度最多6 dB的功率损失，以进行透射和反射。通过75平方公里的表面，我们的链路预算计算预测，与自由空间路径和砖墙穿透相比，链接的SNR的SNR的SNR有4 dB和24 dB的改善。
The first low earth orbit satellite networks for internet service have recently been deployed and are growing in size, yet will face deployment challenges in many practical circumstances of interest. This paper explores how a dual-band, electronically tunable smart surface can enable dynamic beam alignment between the satellite and mobile users, make service possible in urban canyons, and improve service in rural areas. Our design is the first of its kind to target dual channels in the Ku radio frequency band with a novel dual Huygens resonator design that leverages radio reciprocity to allow our surface to simultaneously steer and modulate energy in the satellite uplink and downlink directions, and in both reflective and transmissive modes of operation. Our surface, Wall-E, is designed and evaluated in an electromagnetic simulator and demonstrates 94% transmission efficiency and an 85% reflection efficiency, with at most 6 dB power loss at steering angles over a 150-degree field of view for both transmission and reflection. With a 75 sq cm surface, our link budget calculations predict a 4 dB and 24 dB improvement in the SNR of a link entering the window of a rural home in comparison to the free-space path and brick wall penetration, respectively.
