单极性PWM技术在雷达天线控制中的应用  

Application of unipolar PWM technology in the control of radar antenna

作　　者：叶雷[1] 姚振东[1] 

机构地区：[1]成都信息工程学院,四川成都610225

出　　处：《电子设计工程》2013年第11期62-65,共4页Electronic Design Engineering

基　　金：2009年度公益性行业(气象)科研专项(GYHY200906040)

摘　　要：文中对比了单极性和双极性PWM的技术特点,并叙述了现有的半桥驱动IC在应用中的局限性。利用一些简单的逻辑门,设计了一个单极性PWM逻辑分配电路,经过半桥驱动IC功率放大,驱动由IGBT组成的H桥功率转换电路,实现对雷达天线的伺服控制。上述方法构成的电路,解决了动态自举问题、提高了雷达天线转速及功率转换电路的效率。The technical characteristics of unipolar PWM and bipolar PWM are compared and the limitations of existing half-brigde driver IC in application are described. Design a unipolar PWM logic distribution circuit with some simple logic gates, the unipolar PWM logic are passed to half-brigde driver IC for amplification to drive an H bridge power converter based on IGBT and realize servo control of radar antenna. The circuit mentioned above solves the problem of dynamic bootstrap, improves the rotation speed of radar antenna and the efficiency of power converter.

关 键 词：单极性PWM 双极性PWM 半桥驱动IC 逻辑门 动态自举 

分 类 号：TN952[电子电信—信号与信息处理]