宽带接收机抗背景干扰问题研究

Research on broadband receivers against background interference

针对目前电磁环境越来越复杂宽带接收机易受干扰问题,综合采用提高射频前端P-1、混频前增加开关滤波器组等手段,提高宽带接收机的抗背景干扰能力。对研制的L波段样机测试结果表明,改进后宽带接收机综合抗背景干扰能力提升15 dB以上。

In view of the increasing complexity of the electromagnetic environment and the problem that the broadband receivers are susceptible to interference, the methods of improving the RF front- end P-1 and adding the switching filter bank before the mixer are used to improve the anti-back- ground interference capability of the broadband receivers. The test results of the developed L-band prototype show that the integrated anti-interference capability of the improved broadband receiver is improved by more than 15 dB.