CurtainNet: Enabling precise beamforming with a deformable antenna array on a fabric substrate
CurtainNet: Enabling precise beamforming with a deformable antenna array on a fabric substrate
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DOI：
10.1145/3625687.3625787
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发表时间：
2023-11
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影响因子：
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通讯作者：
Xingda Chen;Ankur Aditya;Zhenyu Lei;Deepak Ganesan
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作者：
Xingda Chen;Ankur Aditya;Zhenyu Lei;Deepak Ganesan
柔性天线和印刷电路板的最新趋势为利用纺织品等可变形基底在智能家居中部署大型超高频、甚高频和工业、科学、医疗频段天线阵列提供了机会。低频大型天线阵列由于尺寸较大，显得笨重且难以部署，因此很少在室内环境中使用。通过将这些阵列嵌入窗帘等现有表面，我们可以改善穿墙传感、为配备低功率无线电的物联网设备进行波束成形以及蓝牙标签的室内定位。然而，窗帘上的天线阵列带来了新的挑战，因为变形会改变其相位中心并改变天线的三维位置。我们提出了CurtainNet，这是一种位于大表面窗帘上的柔性超高频段天线阵列，它结合了光学和射频跟踪来补偿这些变化，同时处理遮挡和相位变化问题。结果表明，CurtainNet在波束成形性能方面比替代方法高出155%以上，并将室内覆盖范围增加了20米。
Recent trends in flexible antennas and printed circuit boards present an opportunity to leverage deformable substrates such as textiles to deploy large UHF, VHF and ISM band antenna arrays in smart homes. Low-frequency large antenna arrays are rarely deployed in indoor settings due to their large size which makes them bulky and difficult to deploy. By embedding these arrays on existing surfaces such as curtains, we can improve through-wall sensing, beamforming for IoT devices equipped with low-power radios and indoor localization of Bluetooth tags. However, antenna arrays on curtains present new challenges since deformation shifts their phase centers and changes the 3D positions of antennas. We present CurtainNet, a flexible UHFband antenna array on a large surface curtain that leverages a combination of optical and RF tracking to compensate for these changes while dealing with occlusions and phase changes. Results show that CurtainNet outperforms alternative methods by more than 155% in beamforming performance and increases indoor range by 20m.