复杂电磁环境下射频前端的设计与实现

复杂电磁环境对超短波射频前端的抗大信号的能力和低噪声的能力提出了严格的挑战,通过选择合适的组成方案来满足噪声和动态的双重要求。利用仿真分析手段,采用良好的匹配方式,达到低噪声的设计要求。分析了器件在实际电路布局中的相互影响,采用合理的设计手段,达到电路的优化设计。经过试验测试验证了射频前端在频带内外的稳定性情况,得到性能优良、工作稳定的室外射频前端,满足了工程应用。

Design and Implementation of RF Front-end in Complicated Electromagnetic Environments

A serious challenge is posed for both the high power capability and the low noise level of the ultra-short wave RF frontend in complicated electromagnetic environments.A proper design scheme is selected to meet the requirements of both low noise figure and wide dynamic range.The minimized noise figure and the best matching networks are achieved by means of simulation.Based on the effects of the devices on the current placement,optimization design is achieved to satisfy the demand in the ultra-short wave band.Through the repeated experiments the circuits are improved to obtain the full waveband stability factor.Finally,an outdoor RF front-end is accomplished with higher quality and reliability,which will be applied in the batch production in future.