基于FPGA的频谱仪2.4GHz数字单元设计  

Design of 2.4 GHz spectrum analyzer digital unit based on FPGA

作　　者：闫大帅 张德海[1] 陆浩[1] 

机构地区：[1]中国科学院国家863计划微波遥感技术实验室,北京100190 [2]中国科学院大学国家空间科学中心,北京100049

出　　处：《电子设计工程》2017年第10期166-169,173,共5页Electronic Design Engineering

摘　　要：为了实现对地球大气痕量气体探测的目的,提出了一种基于FPGA的太赫兹频谱仪数字单元设计方案,完成了系统的硬件和软件设计。该数字单元硬件部分由四路ADC完成2.4 GHz信号采样,一片FPGA芯片完成信号复用和FFT频谱运算,ADC选用ADC083000,FPGA芯片为Xilinx Virtex-5系列。由VHDL编程实现对系统各部分功能的控制。通过Chip Scope工具进行功能验证,该数字单元稳定可靠,可以运用于临边探测仪中。In order to achieve the purpose of the Earth atmospheric trace gas detection, a terahertz spectrum analyzer digital unit based on FPGA is designed in this thesis, with hardware and software design competed. The hardware part of the digital unit uses Quad ADC for signal sampling, an FPGA chip for signal multiplexing and FFT spectrum operation, with ADC selecting ADC083000, FPGA chip of Xilinx Virtex-5 series. The Software part uses the VHDL programming to control the function of each part of the system. Functional verification through ChipScope tool, the digital unit is stable and reliable, it can be applied to the limb sounder.

关 键 词：临边探测 FPGA 频谱仪 FFT 

分 类 号：TN791[电子电信—电路与系统]