A high gain, low specific absorption rate, oval-shaped monopole antenna is presented. It is backed by an all-textile 3 × 3 array of electromagnetic bandgap (EBG) unit cells. The antenna is printed on the thin Rogers ULTRALAM 3850 substrate, while the EBG array is composed of the conductive ShieledIT Super and dielectric substrate felt. The design operates at 2.45 GHz of the Industrial, Scientific, and Medical band. Due to the close distance between the extended grounds of the co-planar waveguide feeding configuration and the oval-shaped monopole antenna, current-coupling was achieved, leading to gain enhancement. However, with body-loading cases, resonance at 2.45 GHz was attained at a separation of 30 mm. By incorporating the EBG array, as an isolator, this issue was resolved. In free space and over a gap of 3 mm from the human body, gain enhancements by 2.68 and 11.54 dB were achieved at 2.45 GHz, respectively. Simulated and measured results are benchmarked. Furthermore, SAR simulation study showed reductions by 99.5%, averaged over 1 and 10 g of tissue.

中文翻译：

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适用于WBAN应用的可穿戴式高增益低SAR天线，装有背衬全纺织EBG

提出了一种高增益，低比吸收率的椭圆形单极天线。它由全纺织的3×3电磁带隙（EBG）晶胞阵列支持。天线印在薄的Rogers ULTRALAM 3850基板上，而EBG阵列由导电ShieledIT Super和绝缘基板毡组成。该设计工作在工业，科学和医疗频段的2.45 GHz。由于共面波导馈电配置的扩展地面与椭圆形单极天线之间的距离很近，因此实现了电流耦合，从而提高了增益。但是，在人体承受力的情况下，以30 mm的间距获得了2.45 GHz的共振。通过合并EBG阵列作为隔离器，此问题得以解决。在自由空间和距人体3毫米的间隙内，在2.45 GHz处分别实现了2.68和11.54 dB的增益增强。模拟和测量的结果进行了基准测试。此外，SAR模拟研究表明减少了99.5％，平均减少了1到10 g组织。