摘要
为实现无外加频率源的2FSK调制,根据2FSK调制原理及V-F转换特性,对V-F转换电路进行改进,增加波形变换电路。实验结果表明,对应基带信号"1"和"0",调制电路能产生两种稳定频率的正弦波。该电路设计在无外加频率源的情况下,实现了相位连续的2FSK调制,具有较强的实用性。
To produce 2FSK signals without applying a frequency source, a V-F transforma- tion circuit is improved, and a waveform transformation circuit is added based on the principle of 2FSK modulation and performance of V-F transformation. Experimental results show that the cir- cuit can produce two kinds of sine signals with different frequencies according to whether a 1 or a 0 is transmitted. The circuit design is practical for continuous phase 2FSK modulation without a frequency source.
出处
《上海电机学院学报》
2015年第1期19-23,共5页
Journal of Shanghai Dianji University
基金
国家自然科学基金青年基金项目资助(61201258)
关键词
V/F转换
二进制频移键控
调制电路
V-F Transformation
binary frequency-shift keying （2FSK）
modulation circuit
