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Analysis of focusing characteristics for phased array used in acousto-electric effect

机译：声电效应相控阵聚焦特性分析

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摘要

Acousto-Electrical Tomography (AET) based on the acousto-electric effect, is a promising new technique for a direct image formation method with enhanced resolution. Acousto-Electrical Tomography requires the focusing energy of ultrasonic focus to be greater in the security context and the focal point to be as small as possible. Contrasting with existing focusing techniques, phased array focusing technique is applied to Acousto-Electrical Tomography. In this study, the effects to the focus spot of ultrasound phased array are explored. A square phased array transducer is used to facilitate the study in the analysis and simulation. The effects of two dimensional array transducer parameters are analyzed from two aspects: focus width and focal depth. The delay precision of hardware circuit design is analyzed theoretically in order to achieve the full coverage of the focal points. The analysis results are verified by acoustic field simulation.
机译：基于声电效应的声电层析成像（AET）是一种有前途的新技术，可用于提高分辨率的直接成像方法。声电子断层扫描需要在安全环境中超声聚焦的聚焦能量更大，并且聚焦点必须尽可能小。与现有的聚焦技术相反，相控阵聚焦技术被应用于声电层析成像。在这项研究中，探讨了对超声相控阵焦点的影响。使用方形相控阵换能器来促进分析和仿真中的研究。从两个方面分析了二维阵列换能器参数的影响：聚焦宽度和聚焦深度。从理论上分析了硬件电路设计的延迟精度，以实现对焦点的完全覆盖。通过声场仿真验证了分析结果。

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