The principle of multiple frequency phase shift scanning method was analyzed.
分析了倍频移相扫描法的工作原理，介绍了用倍频移相扫描法构成的电光采样测量系统。
77% and bandwidth of 500 MHz using optimum designing method is designed, and a good effect in the application of synchronous phase shift scanning has been acquired.
77% ,工作带宽50 0 MHz,并在同步移相扫描应用中获得了满意的效
