无线PPT遥控发送电路设计 这是一个2DPSK调制电路，2DPSK离不开二进制相移键控2PSK。 首先对二进制数字基带信号进行差分编码，将绝对码表示二进制信息变换为用相对码表示二进制信息， 然后再进行绝对调相，从而产生二进制差分相位键控信号. -Wireless remote control PPT send circuit design This is a 2 DPSK modulation circuit, 2 DPSK cannot leave the bin

产生相差90°的AB相脉冲，并且模拟AB相位的超前或滞后，用于ABZ编码器信号的分析(The AB phase pulse with a difference of 90 degrees is produced and the AB phase is simulated forward or lagging, for the analysis of the signal of the ABZ encoder)