用于 60GHz 远程生命体征检测的多层波束扫描漏波天线。

Multi-Layer Beam Scanning Leaky Wave Antenna for Remote Vital Signs Detection at 60 GHz.

机构信息

Department of Electronic, Electrical and Systems Engineering, University of Birmingham, Birmingham B15 2TT, UK.

出版信息

Sensors (Basel). 2023 Apr 17;23(8):4059. doi: 10.3390/s23084059.

DOI:10.3390/s23084059

PMID:37112399

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10146583/

Abstract

A multi-layer beam-scanning leaky wave antenna (LWA) for remote vital sign monitoring (RVSM) at 60 GHz using a single-tone continuous-wave (CW) Doppler radar has been developed in a typical dynamic environment. The antenna's components are: a partially reflecting surface (PRS), high-impedance surfaces (HISs), and a plain dielectric slab. A dipole antenna works as a source together with these elements to produce a gain of 24 dBi, a frequency beam scanning range of 30°, and precise remote vital sign monitoring (RVSM) up to 4 m across the operating frequency range (58-66 GHz). The antenna requirements for the DR are summarised in a typical dynamic scenario where a patient is to have continuous monitoring remotely, while sleeping. During the continuous health monitoring process, the patient has the freedom to move up to one meter away from the fixed sensor position.The proposed multi-layer LWA system was placed at a distance of 2 m and 4 m from the test subject to confirm the suitability of the developed antenna for dynamic RVSM applications. A proper setting of the operating frequency range (58 to 66 GHz) enabled the detection of both heart beats and respiration rates of the subject within a 30° angular range.

摘要

一种用于 60GHz 远程生命体征监测（RVSM）的多层波束扫描漏波天线（LWA）已在典型动态环境中使用单频连续波（CW）多普勒雷达开发。该天线的组件包括：部分反射面（PRS）、高阻抗表面（HIS）和普通介电板。偶极天线与这些元件一起作为源，产生 24dBi 的增益、30°的频率波束扫描范围和高达 4m 的精确远程生命体征监测（RVSM），工作频率范围为（58-66GHz）。DR 的天线要求总结在一个典型的动态场景中，患者需要在睡觉时进行远程连续监测。在连续健康监测过程中，患者可以自由移动到离固定传感器位置一米远的地方。提出的多层 LWA 系统放置在距测试对象 2m 和 4m 的位置，以确认所开发天线适用于动态 RVSM 应用。适当设置工作频率范围（58 至 66GHz）可以在 30°的角度范围内检测到对象的心跳和呼吸频率。