大功率声光Q开关驱动器电磁兼容设计

Electromagnetic Compatibility Design of the RF Driver for High Power Acousto-optic Q Switch

介绍了声光Q开关驱动器的工作原理,讨论了其电磁兼容设计的必要性。从元器件选取、印制电路板(PCB)设计、滤波、接地及屏蔽等方面给出了具体设计方法。采用该方法设计的驱动器电磁辐射明显改善。在同等工作条件下,工作频率的电磁辐射减小了14dBm。

The principle of RF driver for high power acousto-optic Q switch has been presented and the necessity of electromagnetic compatibility design for RF driver has also been discussed. The design method has been given from the view of components selection, PCB design, filtering, grounding and shield etc. The electromagnetic radia- tion of the driver designed by the proposed method has been improved significantly. Under the same operating condi- tions, the electromagnetic radiation at working frequency is reduced by 14 dBrn than the previous product.