de Jong N, Souquet J, Faber G, Bom N
Ultrasonics. 1985 Jul;23(4):176-82. doi: 10.1016/0041-624x(85)90027-7.
The performance of transducers used for medical diagnosis depends to a great extent on matching layer, backing impedance and geometry of the active surface. In this paper special attention is given to the element vibrational modes, the optimum matching, the grating lobe and change of the real acoustic impedance into an imaginary impedance as a function of the product of the width and wavelength. Grating lobes on the echo image and the effect of a mismatch of the matching layer are illustrated. Suggestions are made for the design of linear and phased array transducers considering the above-mentioned aspects.
用于医学诊断的换能器性能在很大程度上取决于匹配层、背衬阻抗和有源表面的几何形状。本文特别关注元件振动模式、最佳匹配、栅瓣以及实声阻抗随宽度与波长乘积的函数关系转变为虚阻抗的情况。文中阐述了回波图像上的栅瓣以及匹配层失配的影响。针对线性和相控阵换能器的设计，考虑上述方面提出了建议。
