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随着中国移动通信网络的飞速发展,直放站等网络优化设备作为基站系统的补充与延伸,得到了业界广泛的应用,它的出现为无线网络覆盖领域增加了新的解决方案,解决了诸多实际网络问题。直放站为网络优化工程提供便利的同时也存在诸多局限。无线直放站在应用中的难度在于施主天线和用户天线需要提供较高的隔离度,才能满足直放站系统在较高增益条件下不产生自激的要求。如果隔离度不满足,直放站产生自激现象,影响移动通信覆盖效果,干扰施主基站甚至整个网络系统。
With the rapid development of China’s mobile communication network, the network optimization equipment such as repeaters, as the supplement and extension of the base station system, has been widely used in the industry. Its emergence has added new solutions to the wireless network coverage and solved many problems Actual network problem. Repeaters for network optimization project to provide convenience at the same time there are many limitations. Wireless repeaters in the application of the difficulty lies in the donor antenna and user antenna need to provide higher isolation in order to meet the repeater system at higher gain conditions do not produce self-excited requirements. If the isolation is not satisfied, the repeater will generate self-excited phenomenon, affecting the coverage effect of mobile communication and interfering with the donor base station or even the entire network system.