pulse modulator

例句：

1. 1.The pulse modulator in the transmitter is responsible for converting the electrical signal into a radio wave.
   发射机中的脉冲调制器负责将电信号转换为无线电波。
2. 2. The pulse modulator in the receiver is used to demodulate the received radio wave back into an electrical signal.
   接收机的脉冲调制器用于将接收到的无线电波解调回电信号。
3. 3.The pulse modulator in the communication system is crucial for maintaining the quality of the transmission and reception.
   通信系统中的脉冲调制器对于保持传输和接收的质量至关重要。