The remote control device crystal frequency stabilization using pulse amplitude modulation transmitter, A simpler circuit, highfrequency stability, launched 28MHZ are continuous carrier amplitude.
该遥控装置采用晶体稳频脉冲调幅发射机，电路较简单，频率稳定度高，发射的是间断的28MHZ等幅载波。
2
Transmitter has a highfrequency stability and big FM deviation and can also operate under the changing of power supply voltage in the range of. 30%.
其发射机频率稳定度高，调制频偏大，在电源电压变化约30%的条件下亦能稳定工作。
3
For high requirement of transmitting carrier in TV transmitter, frequency synthesizer as one of the most important parts in transmitting system is researched in this paper.