中频静态衰落模拟器Ⅱ型机采用三组中频宽带90°移相器实现宽带倒相的功能,从而增加了凹口的移动范围,提高了整机的温度稳定性.在Ⅰ型机的基础上进行了功能扩充,设置了平衰落方式、手动测试方式、自动扫描方式、显示和打印方式,并用按键进行功能倒换,用旋钮设置数据以简化操作方法。本文阐述了Ⅱ型机的设计思想及研制结果。实测表明,该机己达到实用目的。 Medium frequency static fading simulator Ⅱ machine adopts three sets of intermediate frequency wideband 90 ° phase shifter to realize the function of wideband inverting, thus increasing the moving range of the notch and improving the temperature stability of the whole machine. On the basis of type Ⅰ machine The function expansion, set the flat fading mode, manual test mode, automatic scanning mode, display and print mode, and use the keys for function switching, use the knob to set the data to simplify the operation method. This paper describes the design of Ⅱ type machine and research results. Measured that the machine has reached a practical purpose.