Title :
A 2.5 MHz 2D array with Z-axis backing
Author :
Greenstein, M. ; Lum, P. ; Yoshida, H. ; Seyed-Bolorforosh, M.S.
Author_Institution :
Hewlett-Packard Co., Palo Alto, CA, USA
Abstract :
The design, fabrication and initial testing of a prototype fully λ/2 sampled, 2500 element 2D phased array is presented. The array utilizes a unique Z-axis electrical conductivity backing layer, to provide both acoustic attenuation and electrical interconnect for the signal channels. The electrical interconnect is designed to be in the acoustic shadow of the transducer elements so as to minimize the foot print of the array. A modular, demountable Pad Grid Array interconnect is used to connect to the backing of the array. Results are presented for measurements of the single element properties of electrical impedance, pulse echo waveform and spectrum, directivity and cross talk
Keywords :
biomedical electronics; biomedical equipment; biomedical ultrasonics; crosstalk; electric impedance; modules; piezoelectric transducers; ultrasonic transducer arrays; 2.5 MHz; 2.5 MHz 2D array; PZT piezoelectric layer; Z-axis backing; Z-axis electrical conductivity backing layer; acoustic attenuation; acoustic shadow; cardiac applications; cross talk; design; directivity; electrical impedance; electrical interconnect; fabrication; foot print; initial testing; medical imaging; modular demountable Pad Grid Array interconnect; prototype fully λ/2 sampled 2500 element 2D phased array; pulse echo waveform; signal channel; single element properties; spectrum; transducer elements; Acoustic arrays; Acoustic testing; Acoustic transducers; Attenuation; Conductivity; Fabrication; Foot; Phased arrays; Prototypes; Pulse measurements;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.584368
