A new kind of smart antenna capable of automatically switching its main beam to track a moving target is presented. The antenna, which is suitable for mobile communication in long straight spaces, such as railways or highways, integrates a sensing element, signal processing element, and radiating element. The sensing element works based on a frequency-modulated continuous wave and delivers a beat frequency signal containing environmental information to the signal processing element, which is used to control the excitation of the radiating element. To verify the efficiency of the proposed antenna, a prototype is fabricated and implemented in a real corridor scenario. Furthermore, the error vector magnitude (EVM) along the test path is investigated to evaluate the system performance when using the proposed antenna. The results show that this kind of smart antenna is capable of improving mobile communication quality and decreasing energy consumption. Therefore, it is a promising candidate for mobile communication.

提出了一种新型的智能天线，能够自动切换其主波束以跟踪运动目标。该天线适用于长直线空间（如铁路或公路）中的移动通信，该天线集成了传感元件，信号处理元件和辐射元件。感测元件基于调频连续波工作，并将包含环境信息的拍频信号传送到信号处理元件，该信号用于控制辐射元件的激励。为了验证所提出的天线的效率，在真实走廊场景中制造并实施了原型。此外，研究了使用测试天线时沿测试路径的误差矢量幅度（EVM），以评估系统性能。结果表明，这种智能天线能够提高移动通信质量并降低能耗。因此，它是移动通信的有希望的候选者。