传感技术学报Issue(8)：1065-1069,5.DOI:10.3969/j.issn.1004-1699.2014.08.012
水声换能器功放与匹配电路的设计与实现
The Design of D-Class Power Amplifier and Matching Circuit
摘要
Abstract
The article is about D-class power amplifier and matching circuit designed for 20~30 k spectrum underwater sound transducer.PWM circuit is more efficient and smaller than linear circuit,so we choose PWM modulation in D-class power amplifier.D-class power amplifier is composed of triangle wave generator,comparator,power tube and protection module,realizes high efficiency and low distortion power amplification.The output of D-class power amplifier typically fil-ters out high-frequency signals through a low-pass filter,restores low-frequency signals. Underwater sound transducer is capacitive load,and it will produce large reactive power.You should design the matching circuit,including tuning and im-pedance matching.The matching circuit greatly reduces reactive power of underwater sound transducer,and enhances effi-ciency of power amplifier,ensuring underwater sound transducer in good working condition.关键词
换能器/D类功放/匹配电路/谐振Key words
transducer/D-class power amplifier/matching circuit/resonant分类
信息技术与安全科学引用本文复制引用
陈士广,陈华宾,程恩,袁飞..水声换能器功放与匹配电路的设计与实现[J].传感技术学报,2014,(8):1065-1069,5.基金项目
国家自然科学基金项目(61071150)；国家自然科学基金青年项目(61001142)；厦门大学中央高校基础研究基金项目(2011121050) （61071150）
