QIAN Xue-wei1, WANG Zhao-ba1,2, ZHAO Xia1,2
(1. School of Information and Communication Engineering, North University of China, Taiyuan 030051, China;2. Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China)
Abstract： Beam focusing is one of the unique characteristics of ultrasonic phased array compared with conventional ultrasound. On the basis of two-dimensional radiated sound field of phased array, the three-dimensional radiated sound field was simulated in the paper, and then the effect of different frequencies, different number of array elements and different element spacings on focal spot, the depth of focus and the effect on horizontal and vertical resolution were analyzed. The optimal results of transducer parameters have certain reference value for the design of phased array probe.
Key words： beam focusing; ultrasonic phased array; three-dimensional sound field radiation; focal spot; depth of focus
CLD number： TB552Document code： A
Article ID： 1674-8042（2016）02-0115-08 doi： 10.3969/j.issn.1674-8042.2016.02.004
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超声相控阵阵列参数的建模与优化
钱雪微1， 王召巴1,2， 赵霞1,2
（1. 中北大学 信息与通信工程学院， 山西 太原 030051； 2. 中北大学 电子测试技术重点实验室， 山西 太原 030051）
摘要： 声束聚焦是相控阵超声区别于普通超声的主要特点之一， 本文在二维相控阵辐射声场的基础上仿真了三维辐射声场， 并研究了不同的中心频率、 阵元间距和阵元数对焦斑和焦深的影响及对横向分辨率和纵向分辨率的影响， 结果表明合适的换能器参数对换能器探头的设计具有一定的研究意义。
关键词： 声束聚焦； 超声相控阵； 三维辐射声场； 焦斑； 焦深
引用格式：QIAN Xue-wei, WANG Zhao-ba, ZHAO Xia. Model and optimization of ultrasonic phased array parameters. Journal of Measurement Science and Instrumentation, 2016, 7(2)： 115-122. ［doi： 10.3969／j.issn.1674-8042.2016.02.004］
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