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射频系统中,电源方面的干扰有多种,一旦设计考虑不周全,就会带来许多不必要的干扰和噪声信号,降低通信系统的预期设计指标,从而使得通信性能大打折扣。抑制和削弱电源带来的干扰和噪声信号,对于整机的通信性能提升尤为关键,文章分别从电源器件的选取、印制板电源层和地层的设置、电源器件布局、电源屏蔽和隔离、电源滤波和退耦、电源走线等方面进行了探讨,有效抑制和削弱射频系统电源干扰,提高射频系统电磁兼容能力。并提出了相应的解决手段,将其应用到工程实践中,取得不错的实际效果。
In the radio frequency system, there are many kinds of interferences in the power supply. Once the design is not considered well, many unwanted interference and noise signals will be brought and the expected design index of the communication system will be lowered, which will greatly reduce the communication performance. Suppression and weakening of power supply interference and noise signals, for the whole communication performance improvement is particularly critical, the article from the selection of power devices, PCB power and formation settings, power device layout, power shielding and isolation, power supply Filter and decoupling, power traces and other aspects were discussed to effectively suppress and weaken the RF system power supply interference and improve the RF system electromagnetic compatibility. And put forward the corresponding solutions to apply it to engineering practice, and achieved good practical results.