为了改进机载雷达综合网络射频通道之间的射频隔离度,文中根据射频通道之间的耦合模式分析和仿真计算提出了两种改进措施以抑制射频信号间的耦合效应。改进后综合网络射频通道间的隔离度提高了约20 dB,满足雷达阵面使用要求。针对机载雷达严苛的环境条件,进一步改进了综合网络射频印制板的设计和射频连接器的设计,使之通过了机载环境试验考核,该方法可以广泛用于工程实践中。

In order to improve the isolation of radio frequency (RF) channel in synthetic network for airborne radar application, two methods are proposed to suppress the different coupling of RF networks, based on coupling mode analysis and filed simulation analysis. The isolation between RF channels of improved synthetic network can be increased about 20 dB, thus meet the needs of radar array. Considering the harsh environment of the airborne radar, the design of the printed circuit board and the technical requirements of the RF connectors are improved to fulfill the airborne environment test. The methods can be widely utilized in engineering applications.

TN959.73