说明：  本系统以51单片机及FPGA为控制核心，由正弦信号发生模块、功率放大模块、调幅（AM）、调频（FM）模块、数字键控（ASK，PSK）模块以及测试信号发生模块组成
(The system of 51 single-chip and FPGA for the control of the core module by the sinusoidal signal, power amplifier module, AM (AM), frequency modulation (FM) module, digital keying (ASK, PSK) signal modules and test modules )