基于FPGA的可调点频信号产生器  

Tunable dot frequency signal generator based on FPGA

作　　者：张军丽 饶永南[1,2] ZHANG Junli;RAO Yongnan(National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院国家授时中心,陕西西安710600 [2]中国科学院大学,北京100049

出　　处：《电子设计工程》2024年第22期170-174,共5页Electronic Design Engineering

摘　　要：高频正弦波信号产生器在高频电子线路中通常作为载波信号源来使用,是一种必不可少的测试信号源和激励源,基于此设计了一种频率可调、幅度可调的正弦信号产生器。采用现场可编程门阵列(FPGA)产生数字波形信号,在Quartus Prime集成开发环境下,采用Verilog硬件描述语言,基于Modelsim仿真软件上进行了仿真实现。并基于Altera公司Cyclone IV系列的EP4CE30F23C7 FPGA进行了测试,使用Signal Tap逻辑分析仪采集并显示FPGA设计中的实时信号行为。测试结果表明,该信号产生器能输出频率为250、500、750、1000、1500 MHz,幅度为1、1/2、1/4、1/8、1/16的高频正弦波信号。The high frequency sine wave generator is usually used as a carrier signal source in high frequency electronic circuit,and is an essential test signal source and excitation source.Based on this,a sinusoidal signal generator with adjustable frequency and adjustable amplitude is designed.The digital waveform signal is generated by Field Programmable Gate Array(FPGA),and the simulation is realized by Verilog hardware description language and Modelsim simulation software under Quartus Prime integrated development environment.The test was carried out based on the EP4CE30F23C7 FPGA of Cyclone IV series of Altera,and the real⁃time signal behavior in FPGA design was collected and displayed by the Signal Tap logic analyzer.The test results show that the signal generator can output high⁃frequency sine wave signals with frequencies of 250 MHz,500 MHz,750 MHz,1000 MHz,1500 MHz and amplitude of 1,1/2,1/4,1/8,1/16.

关 键 词：载波频率 现场可编程门阵列 调节频率 调节幅度 高频 

分 类 号：TN707[电子电信—电路与系统]