Multiplier is the circuit which is conformed of nonlinear elements and can make two signal multiplied so that it can implement frequency transformation.
相乘器是由非线性元件组成，可以实现两个信号的相乘，完成频率变换的电路。
2
The problem of synchronization of the whole system is solved through sync signal generator circuit applying phased-locked frequencymultiplier;