Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design
Characterization of Wearable and Implanted Antennas: Test Procedure and Range Design
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DOI：
10.1109/tap.2021.3126386
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发表时间：
2021-11
影响因子：
5.7
通讯作者：
L. Berkelmann;D. Manteuffel
中科院分区：
文献类型：
--
作者：
L. Berkelmann;D. Manteuffel
提出了一种用于身体通信的可穿戴式和植入式天线去嵌入参数的测量方法。它由一个锥形的平面模体组成，以表征天线的一般能力，以激发沿身体组织和自由空间之间的边界传播的表面波，由体上天线的角度增益表示。该设计为大多数典型的无线身体区域网络设备提供了一个足够大的测试区域，最大限度地减少了所需的组织模拟材料量。设计的天线测试范围在2.4 GHz工业、科学和医疗（ISM）频段进行了验证。为了展示其在实际应用中的适用性，植入起搏器中集成的不同天线设计的特点是它们的身体增益模式。它们在原位路径损耗测量中的性能比较揭示了与体上增益模式的明确关系，并表明该参数是实现体上应用的受教育天线设计的合适措施。
A method for measuring deembedded antenna parameters of wearable and implanted antennas for on-body communications is presented. It consists of a tapered flat phantom in order to characterize an antenna’s general ability to excite surface waves traveling along the boundary between body tissue and free space, expressed by an angular on-body antenna gain. The design offers a test zone large enough for most typical wireless body area network devices up to smartphone size while minimizing the required amount of tissue-simulating material. The designed antenna test range is validated in the 2.4 GHz industrial, scientific and medical (ISM) band. To showcase the applicability to a realistic application, different designs of antennas integrated into an implanted pacemaker are characterized by their on-body gain patterns. A comparison of their performance in in situ path-loss measurements reveals a clear relation to the on-body gain patterns and indicates that this parameter is a suitable measure for enabling educated antenna design for on-body applications.