Design and fabrication of annular arrays for high-frequency ultrasound

被引：70

作者：

Brown, JA ^{[1
]}

Démoré, CEM ^{[1
]}

Lockwood, GR ^{[1
]}

机构：

[1] Queens Univ, Dept Phys, Kingston, ON K7L 3N6, Canada

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 2004年 / 51卷 / 08期

关键词：

D O I：

10.1109/TUFFC.2004.1324405

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The design, fabrication, and performance of miniature high-frequency annular arrays are described. A 50-MHz, 2-mm-diameter, 7-element, equal-area annular array was fabricated and tested. The array elements were defined using photolithography and the electrical contacts were made using ultrasonic wire bonding. The resulting transducer produced pulses with a -6 dB bandwidth of 52% and an insertion loss of -16 dB. A radiation pattern was collected by scanning the transducer array above the tip of a glass fiber. A -6 dB two-way beam width of 75 microns was found at f/2. The radiation pattern decreased smoothly to less than -60 dB at a distance of 550 microns.

引用

页码：1010 / 1017

页数：8

共 13 条

[1] TRANSIENT FIELDS OF CONCAVE ANNULAR ARRAYS [J].