Department of Electrical & Computer Engineering, Rutgers University, Piscataway, NJ 08854, USA.
Sensors (Basel). 2021 May 22;21(11):3619. doi: 10.3390/s21113619.
Microwave radar sensors have been developed for non-contact monitoring of the health condition and location of targets, which will cause minimal discomfort and eliminate sanitation issues, especially in a pandemic situation. To this end, several radar sensor architectures and algorithms have been proposed to detect multiple targets at different locations. Traditionally, beamforming techniques incorporating phase shifters or mechanical rotors are utilized, which is relatively complex and costly. On the other hand, metamaterial (MTM) leaky wave antennas (LWAs) have a unique property of launching waves of different spectral components in different directions. This feature can be utilized to detect multiple targets at different locations to obtain their healthcare and location information accurately, without complex structure and high cost. To this end, this paper reviews the recent development of MTM LWA-based radar sensor architectures for vital sign detection and location tracking. The experimental results demonstrate the effectiveness of MTM vital sign radar compared with different radar sensor architectures.
微波雷达传感器已经被开发出来，用于非接触式监测目标的健康状况和位置，这将最大限度地减少不适，并消除卫生问题，特别是在大流行情况下。为此，已经提出了几种雷达传感器架构和算法，以检测不同位置的多个目标。传统上，使用包含相移器或机械转子的波束形成技术，这相对复杂且昂贵。另一方面，超材料（MTM）漏波天线（LWA）具有在不同方向上发射不同频谱分量的波的独特特性。这一特性可用于检测不同位置的多个目标，以准确获取其健康和位置信息，而无需复杂的结构和高昂的成本。为此，本文综述了基于 MTM LWA 的雷达传感器架构在生命体征检测和位置跟踪方面的最新发展。实验结果表明，与不同的雷达传感器架构相比，MTM 生命体征雷达具有有效性。
