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天线的任务是将由馈线送来的高频电源能量转变为电磁波能量并向预定方向的空间辐射,或者是将预定方向传来的电磁波能量转变为高频电流能量传送到与接收机相连的馈电系统中。在移动通信系统中,移动台天线是最主要的外露设备,也是最易损坏和造成通信效果差的主要原因。了解一些移动台通信天线的工作原理和类型,对我们使用和维护天线及应急情况下业余制作一副天线都有很大的帮助。
The task of the antenna is to convert the high-frequency power supplied by the feeder into electromagnetic wave energy and radiate it into a space of a predetermined direction, or to convert the electromagnetic wave energy coming from a predetermined direction into a high-frequency current, and transmit the energy to the power supply connected to the receiver System. In the mobile communication system, the mobile station antenna is the most important exposed device, which is also the most easily damaged and the main reason for poor communication. Understanding some of the working principles and types of mobile communication antennas can be of great help to us in using and maintaining antennas and amateurs in the case of emergencies.