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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Wearable Antennas for Body-Centric Communications: Design and Characterization Aspects
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Wearable Antennas for Body-Centric Communications: Design and Characterization Aspects

机译：用于以身体为中心的通信的可穿戴天线：设计和表征方面

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摘要

Wearable antennas exhibit numerous challenges in terms of design and optimization due to the specific environment in which they operate. Therefore, the design of such antennas is a non-trivial task, as multiple constraints have to be satisfied. We present an algorithm for design-and-optimization of flexible wearable antennas with high radiation efficiency and low specific absorption rate, that takes into account the dielectric loading of the human body. It provides a list of feasible antenna designs, not just a single solution, and identifies the optimal wearable antenna design. Numerical examples on the design and optimization of a wearable antenna (based on a dipole structure with a reflector) to demonstrate the validity and efficiency of the proposed algorithm are given. The optimal antenna design shows robust on-body performance and provides a suitable balance between small antenna size (antenna surface is 2214 mm(2)), high radiation efficiency (57.73%), and low value of the maximum 10 g average SAR (0.112 W/kg) on a homogeneous semisolid phantom. Finally, the optimal antenna design is fabricated. The antenna performance is studied under different conditions: on a homogeneous semisolid phantom, on a liquid phantom, on a three-layer semisolid phantom, on a human arm and in the free space. A good agreement between simulated and measured antenna performance is observed.
机译：由于可穿戴天线在特定的工作环境中工作，因此在设计和优化方面面临许多挑战。因此，由于必须满足多个约束，因此这种天线的设计是不平凡的任务。我们提出了一种用于设计和优化具有高辐射效率和低比吸收率的柔性可穿戴天线的算法，该算法考虑了人体的介电负载。它提供了可行的天线设计列表，而不仅仅是一个解决方案，并且确定了最佳的可穿戴天线设计。给出了可穿戴天线（基于带反射器的偶极子结构）的设计和优化的数值实例，以证明所提算法的有效性和效率。最佳的天线设计显示出强大的人体性能，并在小天线尺寸（天线表面为2214 mm（2）），高辐射效率（57.73％）和最大10 g平均SAR的低值（0.112）之间实现了适当的平衡。 W / kg）在均匀的半实物模型上。最后，制造出最佳的天线设计。在不同条件下研究天线性能：在均质的半固态幻像，液态的幻像，三层的半固态幻像，在人的手臂和自由空间中。观察到模拟和测量的天线性能之间的良好一致性。

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