要提高接收机的抗干扰能力,就必须加强接收机电路的滤波性能。在分析现有接收机技术的基础上,总结出现有的缺陷不足,针对各种缺陷,采用技术手段进行改进,提高接收机抗干扰能力和使用的简易性。利用多级放大电路与多级高阶滤波电路串联使用,很大程度上改善了滤波电路的高Q值和电路稳定性之间的矛盾。 To improve the anti-jamming capability of the receiver, it is necessary to enhance the filter performance of the receiver circuit. On the basis of analyzing the existing receiver technology, this paper summarizes the existing deficiencies, aiming at various defects, using technical means to improve, improving receiver anti-interference ability and ease of use. The use of multi-stage amplifier circuit and multi-stage high-order filter circuit in series to greatly improve the filter circuit of high Q and the contradiction between circuit stability.