Objective: We present a systematic method of integrating 5G printed antennas with bezel–less capacitive touch sensor panels (TSPs). Need: With these displays, only the space underneath the TSP is available for antenna integration. But, the electrodes of contemporary TSPs are so closely packed that they reflect impinging electromagnetic (EM) waves, distorting the radiation patterns of the antenna placed underneath. Thus, the system requires more power to compensate for these reflections and maintain high quality data transfer. Method: We utilize pattern search optimization to design the touch sensing electrodes as frequency selective surfaces with a pass-band at the operating frequency of the antenna. We carry out the optimization initially at 4.7GHz to demonstrate its advantages with respect to antenna integration. We fabricated the optimized TSP and measured its transmission and reflection coefficients for a normally–incident plane wave. The designed TSP is broadband and has a measured bandwidth of 8.4% at 4.76GHz. We explore the optimization process further for other frequencies in the 5G–NR frequency range 1 spectrum (4GHz, and 5.5GHz) to show its robustness. Touch performance: We evaluate the touch sensing response of the optimized TSP using quasielectrostatic simulations. Results: We designed, optimized and realized a TSP for a 4.7GHz antenna. We integrated the optimized and conventional TSPs with a printed dipole antenna and measured the radiation patterns of the antenna underneath the TSP at 4.7 GHz. The measured radiation pattern for the optimized TSP case was nearly identical to the free–space pattern of the dipole. With our proposed solution, antennas can claim the space underneath the TSP which is paramount for 5G wireless standards that require multiple antennas for intelligent radios.

中文翻译：

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用于设计与天线集成的触摸传感器面板的优化驱动方法

目标：我们提出了一种将 5G 印刷天线与无边框电容式触摸传感器面板 (TSP) 集成的系统方法。需要：对于这些显示器，只有 TSP 下方的空间可用于天线集成。但是，当代 TSP 的电极非常紧密，以至于它们会反射电磁 (EM) 波，从而扭曲放置在下方的天线的辐射模式。因此，系统需要更多功率来补偿这些反射并保持高质量的数据传输。方法：我们利用模式搜索优化将触摸感应电极设计为频率选择表面，在天线的工作频率下具有通带。我们最初在 4.7GHz 上进行优化，以展示其在天线集成方面的优势。我们制造了优化的 TSP 并测量了其垂直入射平面波的透射和反射系数。设计的 TSP 是宽带的，在 4.76GHz 时测得的带宽为 8.4%。我们进一步探索了 5G-NR 频率范围 1 频谱（4GHz 和 5.5GHz）中其他频率的优化过程，以展示其稳健性。触摸性能：我们使用准静电模拟来评估优化 TSP 的触摸感应响应。结果：我们为 4.7GHz 天线设计、优化并实现了 TSP。我们将优化的和传统的 TSP 与印刷偶极天线集成在一起，并在 4.7 GHz 下测量了 TSP 下方天线的辐射模式。优化 TSP 情况下测量的辐射方向图与偶极子的自由空间方向图几乎相同。通过我们提出的解决方案，