This paper details an antenna design with a minuscule lateral footprint of $0.841{\lambda }_{\circ }\times 0.56{\lambda }_{\circ }\times 0.06{\lambda }_{\circ }$$$mm³. The antenna operates for the two bands of WiMAX 3.5$$GHz (for wireless communication standard) and industrial, scientific and medical radio (ISM) 5.8$$GHz (for healthcare applications). Optimization and computer-aided performance analysis of the proposed design are carried out using Computer Simulation Technology (CST) Microwave Studio. Required electromagnetic performance in close proximity to the human body is achieved by backing the primary CPW-fed antenna with a fabric-based dual-band AMC surface. Several prototypes of the formulated design are characterized experimentally to validate the computationally obtained performance parameters. The proposed AMC-integrated dual-band design readily meets directional radiation characteristics desired for off-body communication with 7.53-dB and 8.58-dB gains in the lower and upper resonance frequencies, respectively. Moreover, the antenna’s top layer consists of a semi-flexible laminate, while textile constitutes the bottom layer to maximize user comfort. Further analysis reveals a significant reduction in SAR by 16.7$$W/kg at the lower band and by 13.5$$W/kg at the upper band. The precedence of the reported structure demonstrated in the results endorses its application in robust wearable devices.

本文详细介绍了一种天线设计，其横向足迹极小$0.\mathrm{8个}\mathrm{4个}\mathrm{1个}{\lambda }_{\circ }\times 0.\mathrm{5个}\mathrm{6个}{\lambda }_{\circ }\times 0.0\mathrm{6个}{\lambda }_{\circ }$$$毫米³。该天线适用于 WiMAX 3.5 的两个频段$$GHz（用于无线通信标准）和工业、科学和医疗无线电 (ISM) 5.8$$GHz（用于医疗保健应用）。使用计算机模拟技术 (CST) Microwave Studio 对所提出的设计进行优化和计算机辅助性能分析。通过使用基于织物的双频 AMC 表面支撑 CPW 馈电主天线，可以实现在靠近人体时所需的电磁性能。通过实验对配方设计的几个原型进行表征，以验证通过计算获得的性能参数。所提出的 AMC 集成双频设计很容易满足离体通信所需的定向辐射特性，在较低和较高的谐振频率下增益分别为 7.53 dB 和 8.58 dB。此外，天线的顶层由半柔性层压板组成，而纺织品构成了底层，以最大限度地提高用户的舒适度。进一步分析显示 SAR 显着降低了 16.7$$W/kg 在低频带和 13.5$$W/kg 在上限。结果中显示的报告结构的优先级支持其在坚固的可穿戴设备中的应用。