高性能水声信号前置放大与长线传输系统设计  

Design of Hydrophone-preamplifier and Long Line Transmission System

作　　者：郑新星[1] 张争气[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《电声技术》2010年第8期46-48,共3页Audio Engineering

摘　　要：对传统的水声信号水下采集水上处理系统进行了改进,前置级采用了高性能集成仪表放大器AD8221,并针对水听器阻容特性对输入端进行匹配设计。同时设计的传输系统可直接在供电线上传输信号,该传输系统具有带宽高,衰减低,输出阻抗低的特性,是一种较为理想的信号与电源共线传输系统。The traditional acoustic signal collecting underwater and processing surface system is improved. The amplifier AD8221 with a high-performance CMOS chip is used as the preamplifier to match the hydrophone input impedance. The transmission system can transfer the signal directly in the power line. The system is high- bandwidth, low-attenuation, and low-output-impedance.

关 键 词：水听器阻抗匹配 前置放大器 长线传输 电荷泵 

分 类 号：TB56[交通运输工程—水声工程]