IEEE Trans Biomed Circuits Syst. 2007 Dec;1(4):242-9. doi: 10.1109/TBCAS.2007.913127.
The paper presents a compact planar antenna designed for wireless sensors intended for healthcare applications. Antenna performance is investigated with regards to various parameters governing the overall sensor operation. The study illustrates the importance of including full sensor details in determining and analysing the antenna performance. A globally optimized sensor antenna shows an increase in antenna gain by 2.8 dB and 29% higher radiation efficiency in comparison to a conventional printed strip antenna. The wearable sensor performance is demonstrated and effects on antenna radiated power, efficiency and front to back ratio of radiated energy are investigated both numerically and experimentally. Propagation characteristics of the body-worn sensor to on-body and off-body base units are also studied. It is demonstrated that the improved sensor antenna has an increase in transmitted and received power, consequently sensor coverage range is extended by approximately 25%.
本文提出了一种用于医疗保健应用的无线传感器的紧凑型平面天线。针对影响整体传感器操作的各种参数，对天线性能进行了研究。该研究说明了在确定和分析天线性能时，包含完整传感器细节的重要性。与传统的印刷条天线相比，经过全局优化的传感器天线在天线增益上提高了 2.8dB，辐射效率提高了 29%。演示了可穿戴传感器的性能，并通过数值和实验研究了天线辐射功率、效率和前向到后向辐射能量的比值的影响。还研究了佩戴在人体上的传感器与佩戴在人体上和人体外的基站之间的传播特性。结果表明，改进后的传感器天线增加了发射和接收功率，因此传感器的覆盖范围大约扩展了 25%。
