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介绍一种应用声表面波横向耦合谐振滤波器的直放直检救生接收机模块，它没有本振和混频级，模块既保证了技术指标，又消除了混频干扰，特别是镜频干扰。
A direct-on-the-fly life-saving receiver module using SAW transversely coupled resonant filter is introduced. It has no local oscillator and mixing stage. The module not only guarantees the technical specifications but also eliminates the interference of mixing, especially the image interference .