Aperiodic and deterministic 2D phased array structures for ultrasonic imaging
Aperiodic and deterministic 2D phased array structures for ultrasonic imaging
复制标题
用于超声成像的非周期性和确定性二维相控阵结构
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
G. Hayward
中科院分区：
文献类型：
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作者：
A. Tweedie;V. Murray;G. Hayward
许多超声成像应用需要能够快速体积导向的超声相控阵，为了做到这一点，需要某种形式的二维(2D)阵列。然而，这种器件通常需要大量增加有源阵列单元的数量，这不可避免地限制了性能和成本效益的制造。提出了一种新的、灵活的设计方法，允许阵列紧密地根据给定的应用进行定制。与更传统的稀疏2D阵列设计相比，这允许减少实现指定波束形状所需的元件数量。本文给出了利用这种新的设计过程所获得的模拟和实验结果，以证明它可以用来降低超声体积成像系统的复杂性。
Many ultrasonic imaging applications require ultrasonic phased arrays capable of rapid volumetric steering, and to do so, some form of two-dimensional (2D) array is necessary. However, such devices have typically required a large increase in the number of active array elements, with inevitable constraints on performance and cost effective manufacture. A new, flexible design approach, which allows the array to be closely tailored to a given application, is proposed. This allows a reduction in the number of elements needed to achieve a specified beam shape, when compared to more traditional sparse 2D array designs. This paper presents both simulated and experimental results achieved using this novel design process to demonstrate that it can be used to reduce the complexity of ultrasonic volumetric imaging systems.