Title :
A 2-D acoustic array for diagnostic imaging
Author :
Bechtold, M. ; Granz, B. ; Oppelt, R.
Author_Institution :
Corp. Res. & Dev., Siemens AG, Erlangen, Germany
Abstract :
The fabrication of an acoustic 2-D phased array was investigated. For 3-D imaging at 3.5 MHz an array with 64*64 elements, sizes each 0.22*0.22 mm2 covering a footprint of 2*2 cm2 was projected. In the authors´ modular construction concept the array will be composed of 32 prefabricated and pretested double line modules with 2*64 elements, including ASIC electronics located in the rear of the modules. An array of 8*64=512 elements was made up of 4 modules. A 64 channel Tx/Rx electronics in SMT was developed and measured together with the modules. Single element two way insertion loss of 42 dB and the broad bandwidth of the acoustic pulse gave proof of the high quality of the authors´ design and fabrication processes, even for elements as tiny as a grain of salt
Keywords :
application specific integrated circuits; biomedical electronics; biomedical ultrasonics; ultrasonic arrays; 2-D acoustic array; 3-D imaging; 3.5 MHz; ASIC electronics; acoustic pulse bandwidth; medical diagnostic imaging; modular construction concept; prefabricated pretested double line modules; single element two way insertion loss; Acoustic arrays; Acoustic imaging; Acoustic measurements; Application specific integrated circuits; Bandwidth; Fabrication; Insertion loss; Modular construction; Phased arrays; Surface-mount technology;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.584386