Wearable wireless electronics is becoming a significant research area because of the unique features of this technology. Within this field printed antennas are the key electrical component accomplishing the signal transmission and energy harvesting tasks and at the same these antennas need to be lightweight, environmentally friendly, safe to wear, and easy to conform. Currently, the majority of available paper‐based antennas are designed for RFID, sensing, UWB, WLAN, and medical applications, with just a few being utilized in wearable applications, particularly for wireless body area network (WBAN). Furthermore, few studies have been conducted on the usage of printable copper conductive materials and low‐temperature plasma technique for the fabrication of such antennas. This study demonstrates the realization of a dual‐band paper‐based wearable antenna by screen‐printing of a plasma‐sintered conductive copper paste. The copper paste, composed of 51 wt% solid particles, can easily produce desired conductive patterns on photo paper after printing and a subsequent plasma sintering, with a good adhesion. The antenna designed on photopaper operates in the frequency bands of 1.73–2.55 GHz and 7.66–8.89 GHz. Free‐space simulation and measurement results reveal that the antenna exhibits stable radiation performance in the targeted WBAN (2.4–2.4835 GHz) and X uplink (7.9–8.4 GHz) frequency bands, together with low profile, excellent conformality and acceptable SAR values on the body and no electronic waste formed after disposal, making it a competitive candidate for usage in wearable wireless electronics.

中文翻译：

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用于可穿戴无线电子产品的铜浆印刷纸基双频天线


由于这项技术的独特特性，可穿戴无线电子学正在成为一个重要的研究领域。在这个领域中，印刷天线是完成信号传输和能量收集任务的关键电气元件，同时这些天线需要重量轻、环保、佩戴安全且易于安装。目前，大多数可用的纸质天线都是为 RFID、传感、UWB、WLAN 和医疗应用而设计的，只有少数用于可穿戴应用，特别是无线体域网 （WBAN）。此外，关于使用可打印铜导电材料和低温等离子体技术制造此类天线的研究很少。本研究展示了通过等离子烧结导电铜浆的丝网印刷实现双频纸基可穿戴天线。铜浆由 51 wt% 的固体颗粒组成，在打印和随后的等离子烧结后，可以很容易地在相纸上产生所需的导电图案，具有良好的附着力。在照片纸上设计的天线在 1.73–2.55 GHz 和 7.66–8.89 GHz 的频段内工作。自由空间仿真和测量结果表明，该天线在目标 WBAN （2.4–2.4835 GHz） 和 X 上行链路 （7.9–8.4 GHz） 频段表现出稳定的辐射性能，并且体积小、保形性好、机身上可接受的 SAR 值，并且处置后不会形成电子垃圾。 使其成为可穿戴无线电子产品的竞争候选者。