Α feasibility study of using components such as conductive Velcro tape and zip fastener to change the polarisation of a textile patch antenna from linear (LP) to circular (CP) is presented. The antennas are designed to operate at 2.3–2.5 GHz frequency band, are made using felt substrate and conductive cloth and their size is 100.4 mm × 74.2 mm × 4.26 mm. It is proved, via simulations and measurements, that such components are strong candidates as means for polarisation reconfiguration of textile antennas. Both Velcro and zip textile patch antennas at the LP mode yield axial ratio (AR) larger than 10 dB at the operating frequency range. In the CP mode, the Velcro antenna gives AR equal to 3.1 dB at 2.35 GHz and the zip antenna 1 dB at 2.31 GHz. Repeatability measurements of interchanging polarisation modes (LP–CP) for both antennas have been conducted presenting acceptable repeatability. Great advantage of both antennas (Velcro and zip) is that the polarisation can be changed at will by a simple manipulation (detach the Velcro or unzip); thus, providing to the user the flexibility of adjusting the antenna characteristics depending on wearable application and environment of operation.

中文翻译：

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使用导电拉链和维可牢尼龙搭扣作为纺织品贴片天线的极化重构装置

提出了使用导电尼龙搭扣带和拉链之类的组件将纺织品贴片天线的极化从线性（LP）改变为圆形（CP）的可行性研究。天线设计为在2.3–2.5 GHz频段上运行，使用毡底物和导电布制成，尺寸为100.4毫米×74.2毫米×4.26毫米。通过仿真和测量证明，这些组件是用于纺织天线极化重新配置的强大候选。LP模式下的Velcro和zip纺织品贴片天线在工作频率范围内产生的轴向比（AR）均大于10 dB。在CP模式下，Velcro天线在2.35 GHz时的AR等于3.1 dB，而拉链天线在2.31 GHz时的AR等于1 dB。已经对两种天线的互换极化模式（LP–CP）进行了重复性测量，并给出了可接受的重复性。两种天线（Velcro和zip天线）的最大优点是可以通过简单的操作（拆下Velcro或拉开拉链）随意改变极化。因此，向用户提供了根据可穿戴应用和操作环境调节天线特性的灵活性。