基于AD8367的某监测设备自动增益控制模块设计与测试  

Design and Test on Automatic Gain Control Module of A Monitoring Equipment Based on AD8367

作　　者：周进[1] 申伯纯[1] 王雪宝 ZHOU Jin;SHEN Bochun;WANG Xuebao(The Navy 702 Factory,Shanghai 200434;College of Electronic Engineering,Naval University of Engineering,Wuhan 430033)

机构地区：[1]海军702厂,上海200434 [2]海军工程大学电子工程学院,武汉430033

出　　处：《舰船电子工程》2019年第4期167-171,共5页Ship Electronic Engineering

基　　金：国家自然科学基金(编号:61803379)资助

摘　　要：针对某监测设备,简要介绍了AD8367的主要原理及特点,设计了频率在40MHz～70MHz,输出功率在1dBm±0.5dBm范围的自动增益控制(AGC)模块电路。该设计以AD8367为可变增益放大器(VGA)核心,经过滤波和功率分配后以LTC5507实现检波功能,比较检波输出与参考电压值完成可变电压放大器的调节,实现自动增益控制功能。通过实验,给出了测试结果,验证了AGC模块设计方案的有效性和实用性。Aiming to the monitoring equipment,the main features and principle of AD8367 are introduced,and the automatic gain control(AGC)module circuit with frequency of 40 MHz^70 MHz and output power of 1 dBm±0.5 dBm is designed.This design takes AD8367 as the core of variable gain amplifier(VGA).After filtering and power distribution,it realizes the detection function with LTC5507.Through comparison of detection output and reference voltage,the adjustment of VGA is completed and the AGC function is realized.By the experiment, the test results aregiven to verify the effectiveness and practicability of the AGC module design.

关 键 词：AD8367 自动增益控制 可变增益放大器 检波功能 实用性和有效性 

分 类 号：TN851[电子电信—信息与通信工程]