基于FPGA的数字中频信号发生器硬件设计

Hardware design of digital mid-frequency signal generator based on FPGA

QPSK作为一种先进的数字调制方式,特别适用于数字卫星通信系统。而近年来DSP,FPGA等数字芯片的高速发展,使全数字式调制得到广泛应用。介绍一种适用于卫星通信,基于FPGA,采用QPSK全数字式调制的中频信号发生器的硬件设计方案,给出了工作原理和系统组成、主要元器件说明、以及电路板设计和制作中若干注意事项。

QPSK as an advanced digital modulation technique is fit for the digital satellite communication system well. And the speedy development of digital chips like DSP and FPGA, highly promotes the application of all - digital modulation technique. This paper presents a hardware seheme of mid - frequency signal generator based on FPGA, which uses QPSK all - digital modulation technique, and fits for the satellite communication system. Besides the system eonstitution, this paper also presents main components, and several principles and skills of circuit design. design