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一种S频段调频数字遥测发射机的设计与实现
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摘要
设计实现了一款基于FPGA的S频段调频遥测发射机,在FPGA内部实现遥测信号的全数字化调制,再经DAC完成数字信号到模拟信号的转换,最后在射频端经过两级上变频,完成S频段射频信号的输出。该发射机的输入信号码速率和输出射频信号频点均可以灵活设置,且设置完成后可以实时存储,掉电不丢失。该发射机硬件结构简单,性能优良,通用性强,各项参数符合设计要求。
A kind of S band FM telemetry transmitter is designed and implemented based on FPGA.In the FPGA,the full digital modulation of telemetry signals is achieved,and then the digital signal to analog signal conversion is completed through DAC,and finally through the two stages of frequency conversion in the radio frequency module,the S band RF signal output is completed.The input signal code rate and the output frequency point of the transmitter can be flexibly set,and the setting can be stored in real time after the setting is completed,and the power down is not lost.The transmitter has the advantages of simple structure,good performance,strong versatility,and the parameters meet the design requirements.
引文
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