基于自适应电平控制的频谱分析仪动态范围扩展技术  

The Dynamic Range Extension Technology of Spectrum Analyzer Based on Adaptive Level Control

作　　者：郭亚楠 杜会文 丁毓恒 赵子正 GUO Yanan;DU Huiwen;DING Yuheng;ZHAO Zizheng(Ceyear Technologies Co.,Ltd.,Qingdao 266555,China)

机构地区：[1]中电科思仪科技股份有限公司,山东青岛266555

出　　处：《电声技术》2022年第6期98-101,共4页Audio Engineering

基　　金：青岛市高端研发机构项目“微弱突发宽带电磁信号微波光子快速探测技术”资助(No.21-7-3-9-jch)。

摘　　要：随着移动通信技术的迅猛发展,通信设备对频谱分析仪等测试设备的动态范围要求越来越高。针对这一现状,本文设计了频谱分析仪接收通道三级电平自动控制方案,提出增益自适应控制技术,并给出通道输出电平的自动调节系统以及自动调节方法,从而大大提高频谱分析仪的动态范围。将该技术应用到某型号信号分析仪中,仪器的动态范围提高了5 dB,可很好地满足通信设备的测试需求。With the rapid development of mobile communication technology, communication equipment has higher and higher requirements for the dynamic range of spectrum analyzer and other test equipment. In view of this situation, this paper designs a threelevel automatic control scheme for the receiving channel of the spectrum analyzer, proposes the gain adaptive control technology,and gives the automatic adjustment system and method of the channel output level, so as to greatly improve the dynamic range of the spectrum analyzer. When this technology is applied to a certain type of signal analyzer, the dynamic range of the instrument is increased by 5 dB, which can well meet the testing requirements of communication equipment.

关 键 词：频谱分析仪 动态范围 增益自适应控制 

分 类 号：TN74[电子电信—电路与系统]