THz Prism: One-Shot Simultaneous Localization of Multiple Wireless Nodes With Leaky-Wave THz Antennas and Transceivers in CMOS
THz Prism: One-Shot Simultaneous Localization of Multiple Wireless Nodes With Leaky-Wave THz Antennas and Transceivers in CMOS
复制标题
太赫兹棱镜：使用 CMOS 中漏波太赫兹天线和收发器一次性同时定位多个无线节点
DOI：
10.1109/jssc.2021.3115407
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发表时间：
2021
影响因子：
5.4
通讯作者：
K. Sengupta
中科院分区：
文献类型：
--
作者：
H. Saeidi;S. Venkatesh;Xuyang Lu;K. Sengupta
在这篇文章中，我们提出并展示了一个频谱到空间的映射原理，用于在太赫兹（THz）频率下同时和单次定位多个无线节点。频谱到空间的映射是通过两个双端口芯片集成波导（CIW）为基础的漏波天线（LWA）。接口与两个LWA，我们集成了两个发射和接收链之间的360- 400 GHz的范围内在一个单一的芯片实现在65 nm的批量CMOS工艺。利用精心设计的色散性质的LWA和其频率依赖的辐射模式，我们创建独特的光谱空间校准图的1-D和2-D的角度定位。测量的单次定位误差方差在具有200 Hz分辨率带宽（BW）的一维空间中小于1°，并且在具有20 Hz分辨率BW的二维空间中小于2°。单次定位原理的高分辨率性质使这种方法对于多无线节点定位、链路发现、波束成形、波束管理和波束优化方法具有吸引力。
In this article, we propose and demonstrate a spectrum-to-space mapping principle for localizing multiple wireless nodes in a simultaneous and single-shot fashion at terahertz (THz) frequencies. Spectrum-to-space mapping is achieved through two dual-port chip integrated waveguide (CIW)-based leaky-wave antennas (LWAs). Interfacing with the two LWAs, we integrate two transmitting and receiving chains operating between 360- and 400-GHz range in a single chip realized in a 65-nm bulk CMOS process. Utilizing the carefully engineered dispersive nature of the LWA and its frequency-dependent radiation patterns, we create unique spectrum-to-space calibration maps for both 1-D and 2-D angular localizations. The measured one-shot localization error variance is less than 1° in 1-D space with 200-Hz-resolution bandwidth (BW) and less than 2° in 2-D space for a 20-Hz-resolution BW. The high-resolution nature of the localization principle in a single-shot fashion makes this approach attractive for multi-wireless node localization, link discovery, beam-forming, beam-management, and beam-optimization methods.