Antenna measurement is crucial for characterizing the performance of an antenna. This article proposes a measurement technique that can be used for demo purposes in a class or laboratory for characterizing ultrahigh frequency (UHF) antennas. This approach measures the antenna under test (AUT) semispherical pattern simultaneously without any mechanical rotation as commonly applied. The measured data are then processed using a laptop connected to a radio-frequency identification (RFID) reader (transceiver) to identify various antenna properties. The setup limitations, considerations, and measurement demonstration are presented in detail. The system was successful in characterizing several antenna properties, including antenna polarization, frequency of operation, and efficiency, as well as constructing a 2D and full 3D radiation pattern for different test antennas. The in-class measurements were verified with simulations and anechoic chamber measurement data.

中文翻译：

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使用 RFID 半球形圆顶的天线表征演示系统 [教育角]


天线测量对于表征天线的性能至关重要。本文提出了一种测量技术，可用于课堂或实验室中的演示目的，以表征超高频 (UHF) 天线。这种方法同时测量被测天线 (AUT) 半球形方向图，无需像通常应用的那样进行任何机械旋转。然后使用连接到射频识别 (RFID) 读取器（收发器）的笔记本电脑处理测量的数据，以识别各种天线特性。详细介绍了设置限制、注意事项和测量演示。该系统成功地表征了多种天线特性，包括天线极化、工作频率和效率，并为不同的测试天线构建了 2D 和全 3D 辐射方向图。课堂测量通过模拟和电波暗室测量数据进行了验证。