一种超声相控阵大焦域聚焦的设计方法  

A designing method for concentrating through large focus region of ultrasonic phased array

作　　者：向军[1] 王华[1] 许山川[1] 陈伟[1] 刘冬[1] 钟珊珊[1] 

机构地区：[1]重庆医科大学生物医学工程系,超声医学工程重庆市市级重点实验室,重庆400016

出　　处：《激光杂志》2010年第6期70-72,共3页Laser Journal

基　　金：国家自然科学基金重点项(No.30830040)

摘　　要：本文提出一种实现超声相控阵换能器大焦域声场的方法。这种方法就是通过多次正向—逆向变换计算出相控阵换能器各阵元的激励向量。仿真结果表明:此方法能准确地控制169阵元相控阵换能器的声场模式,能得到比较满意的单焦点大焦域声场分布。To achieve a single large focal region of the ultrasonic pahsed array this paper presents a new method,which is calculate the incentive vector of each element through repeated Positive-Reverse transformation,and then the distribution of sound pressure could be computated through Ruilisuomo Field integral formula under the incentive vector.Simulation results show that this method can accurately control the phased array transducer with 169 elements to form a single large focal region.

关 键 词：大焦域 高强度聚焦超声 相控阵 

分 类 号：O426.2[理学—声学]