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Design and Evaluation of Typical Antennas for Monitoring Vital Signs

机译：典型天线监测生命迹象的设计与评估

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摘要

Non-contact method to monitor vital signs using radar-based sensor system is a more convenient way in comparison with the contact monitoring devices. Portable with a low profile and low-cost non-contact vital signs sensors system that are capable to monitor heart and respiration rates are presented and evaluated their performances. A printed 2x1 patch array antenna, Yagi-Uda antenna and dipole array antenna are designed and integrated with sensor system Tx/Rx module for their performances analysis. The gain of the designed antennas are 6.38 dBi, 7.7 dBi, and 10.5 dBi, VSWR are 1.1, 1.15, and 1.0, and return loss are -26.26 dB, -22.7 dB and -21.6 dB respectively at 2.4 GHz. The evaluations performances of these antennas were compared with a standard respiratory-rate measurement using a pulse sensor and respiratory sensor. The measurement results using the proposed non-contact sensor systems and the standard contact systems showed excellent performance with the printed dipole array antenna compared with other two antennas, the error between the average heart rate extracted by the non-contact systems and the reference systems are +/- 1.1 beat/min for dipole array antenna, +/- 1.5 beat/min for printed 2x1 patch array antenna and +/- 1.9 beat/min for Yagi-Uda antenna.
机译：与基于雷达的传感器系统监控生命标志的非接触方法是与联系监控设备相比的更方便的方式。呈现低轮廓和低成本的非接触式重要标志传感器系统，该系统能够监控心脏和呼吸速率，并评估其性能。打印的2x1贴片阵列天线，YAGI-UDA天线和偶极阵列天线设计并与传感器系统TX / RX模块集成，以进行性能分析。设计天线的增益为6.38 dbi，7.7 dbi和10.5 dbi，Vswr为1.1,1.15和1.0，返回损耗分别为-26.26 db，-22.7 db和-21.6 dB。使用脉冲传感器和呼吸传感器的标准呼吸速率测量比较这些天线的评估性能。使用所提出的非接触式传感器系统和标准接触系统的测量结果表明，与其他两个天线相比，印刷的偶极阵列天线的性能出色，由非接触系统和参考系统提取的平均心率之间的误差是+/- 1.1为偶极阵列天线的击败/分钟，+/- 1.5打印的2x1贴片阵列天线和+/- 1.9为Yagi-UDA天线的拍摄/分钟。

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