Design of Programmable ASK Modulation Signal Source Based on PLL
In this paper,a phase locked loop-based method for generating Amplitude-Shift Keying(ASK)modulated signal sources is proposed to solve the problem of data acquisition for electromagnetic radiation modulation signal recognition.An ASK modulation signal source with adjustable carrier,variable symbol and stable signal source is designed by using phase locked loop and STM32.The phase-locked loop LMX2572 with high stability and low power consumption is used to generate sine waves in the frequency range of 12.5 MHz～3 GHz,and the baseband signal is controlled by the STM32F103C8T6 microprocessor to digitally modulate the sine waves generated by the phase-locked loop to realize the function of generating ASK modulated signals.The experimental results show that the designed ASK modulated signal source realizes the functions of variable frequency,variable symbol,variable power and programmable control,and solves the problem of real-time and convenient data acquisition.The ASK modulated signal generated by the proposed method can be used to verify the type detection of electromagnetic radiation modulated signal.
NETL
NSTL
万方数据
