单片宽带频谱分析芯片设计

文章介绍了单片宽带实时频谱分析芯片的设计原理和方法，并在FPGA上进行了原型验证。设计中采用了基于多相滤波器组的下变频方案，并对下变频后每一路数据进行重叠加窗处理。为了减小芯片面积，对后端的FFT分析模块进行了优化设计，提出了将两条蝶形运算级合并为一条流水线的新型FFT设计构架。该设计可以不间断地处理数据，从而实现信号的无缝捕获。

Design of Monolithic Chip for Broadband Spectrum Analysis

This paper presents a design principle and method of the real-time wideband frequency analysis chip based on the sole chip.The circuit architecture on the FPGA chip for the prototype verification.In the design,the poly-phase filter bank is adopted as the Digital Down Converter(DDC),and each path of data channels after DDC is overlapped and windowed.In order to reduce the chip area,the back-end FFT analysis module is optimized and a new FFT architecture which combines two butterfly computing stages into one ...