A dual-band dual-polarised antenna for on-/off-body wireless body area network (WBAN) applications is presented, operating at Industrial, Scientific, and Medical bands of 2.45 GHz with circular polarisation and 5.8 GHz with vertical polarisation. The TM ₁₁ mode is used for the off-body mode in the first band because of its broadside radiation pattern, meanwhile, the TM ₀₂ mode is chosen for on-body mode due to its monopole-like radiation pattern in the second band. Composed of a circular patch with eight slots, the structure of the proposed antenna is simple, and it is fabricated with textile material. The performance of the antenna is investigated in free space and on the body. Then, the performance influenced by the bending of the antenna is discussed with a different bending radius. The specific absorption rate distribution is simulated on body tissue. And the maximum value at both bands is below the IEEE C95.3 standard of 1.6 W/kg. The acquired performance demonstrates that the proposed antenna can be applied to the applications of WBAN.

中文翻译：

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适用于人体上/体外WBAN应用的双频段和双极化圆形贴片纺织天线

提出了一种适用于人体上/体外无线人体局域网（WBAN）应用的双频双极化天线，该天线在圆形极化的2.45 GHz和垂直极化的5.8 GHz的工业，科学和医学频段上工作。由于其宽边辐射图，TM ₁₁模式在第一波段用于体外模式，同时，TM _02模式由于人体模式在第二波段内呈单极辐射状，因此选择了人体模式。所提出的天线由具有八个槽的圆形贴片组成，结构简单，并由纺织材料制成。在自由空间和人体上研究天线的性能。然后，讨论了在不同弯曲半径下受天线弯曲影响的性能。在人体组织上模拟比吸收率分布。并且两个频带的最大值都低于1.6瓦/千克的IEEE C95.3标准。所获得的性能证明了所提出的天线可以应用于WBAN的应用。