We propose a new broadband flexible waterproof antenna suitable for Internet of Things applications. The antenna is comprised of three components: radiating elements fed by a 50-Ω coplanar waveguide transmission line and two layers from an elastomer composite (used as a substrate and top encapsulation) which completely covers the antenna's radiating elements to provide water and dust resistance. An antenna prototype is fabricated and tested. Experimental and numerical results show that the proposed antenna has broad bandwidth (|S₁₁| ≤ −10 dB) over the frequency range of 0.83–2.52 GHz, high radiation efficiency of about 92% and good radiation patterns. The antenna was also immersed into water for 10 s, 10, 30 and 60 min, respectively and reflection coefficient magnitudes were measured, to verify its waterproof capability. The durability and flexibility tests were performed on the antenna prototype. Results show that there is no significant degradation in the antenna performance.

我们提出了一种适用于物联网应用的新型宽带柔性防水天线。天线由三部分组成：由50Ω共面波导传输线馈电的辐射元件和由弹性体复合材料制成的两层（用作基板和顶部封装），该层完全覆盖了天线的辐射元件，以提供防水性和防尘性。制作并测试了天线原型。实验和数值结果表明，所建议的天线具有较宽的带宽（| S ₁₁| 在0.83–2.52 GHz的频率范围内≤-10 dB），约92％的高辐射效率和良好的辐射方向图。天线也分别浸入水中10 s，10、30和60分钟，并测量反射系数幅度，以验证其防水能力。耐久性和柔韧性测试是在天线原型上进行的。结果表明，天线性能没有明显降低。