一种实时频谱仪中帧检波器的FPGA实现  

A realization of frame detector in real-time spectrum analyzer based on FPGA

作　　者：郭静 何鹏[1] Guo Jing;He Peng(The 41st Institute of CETC,Qingdao 266555,China)

机构地区：[1]中国电子科技集团公司第四十一研究所,山东青岛266555

出　　处：《电子技术应用》2021年第12期35-38,共4页Application of Electronic Technique

摘　　要：针对实时频谱仪中无缝频谱数据量巨大导致难以进行传输和显示的问题,基于FPGA的FIFO资源设计了一种适用于实时频谱仪的帧检波器,在保留信号特征的条件下将多帧频谱数据合并为一帧进行传输与刷新。仿真与实际测试结果表明该检波器具有正峰值、负峰值、平均值和实时刷新四种检波方式,能够在检波的同时实现对分析带宽外频谱数据的截断。相比于传统基于RAM实现的帧检波器,该检波器不需要控制RAM读写地址,易于实现,占用逻辑资源较少,已在实时频谱仪中得到应用。For coping with transmission and display problem caused by the huge amount of seamless spectrum data in real-time spectrum analyzer,this article designed a FIFO-based frame detector of real-time spectrum analyzer in FPGA.It combines multiple frames of spectrum data into one frame for transmission and refresh while retaining signal characteristics.By simulation and actual testing,results show that the detector has four types of detection:peak value,negative value,mean value and real-time sample value.It also can cut off the spectrum data outside the analysis bandwidth while detecting.Compared with the traditional RAM-based frame detector,the detector does not need to control RAM read and write addresses,is easy to implement,occupies less logic resources,and has been applied in real-time spectrum analyzers.

关 键 词：实时频谱分析仪 检波器 帧检波 FPGA 

分 类 号：TN47[电子电信—微电子学与固体电子学]