新型雷达高度表用声表面波调频信号产生器  

SAW Wide band Chirp Waveform Generator for a New Type Radar Altimeter

作　　者：刘刚[1] 张龙[1] 

机构地区：[1]四川压电与声光技术研究所

出　　处：《压电与声光》1997年第1期4-8,共5页Piezoelectrics & Acoustooptics

摘　　要：介绍以ＬｉＮｂＯ３为基片，产生中频７０ＭＨｚ的声表面波宽带线性调频信号器件的设计及原理，在声表面波器件设计中采用了倾斜色散换能器结构，成功地制作出了相对带宽超过７０％的线性调频信号产生器。该信号产生器用于一种新型雷达高度表。The paper presents the design and principle of 70 MHz SAW wide band chirp waveform generator on LiNbO 3 crystal substrate.The structure of slanted dispersive transducer is adopted in the design.The chirp waveform generator with relative bandwith of more than 70% has been successfully fabricated and was used in a new type radar altimeter.The first experimental results were satisfactory.

关 键 词：雷达高度表 线性调频信号 声表面波 色散延迟线 

分 类 号：TN952[电子电信—信号与信息处理]