A high frequency annular array transducer using an interdigital bonded 1-3 composite
SCIE
SCOPUS
- Title
- A high frequency annular array transducer using an interdigital bonded 1-3 composite
- Authors
- Chabok, HR; Cannata, JM; Kim, HH; Williams, JA; Park, J; Shung, KK
- Date Issued
- 2011-01
- Publisher
- IEEE
- Abstract
- This paper reports the design, fabrication, and characterization of a 1-3 composite annular-array transducer. An interdigital bonded (IB) 1-3 composite was prepared using two IB operations on a fine-grain piezoelectric ceramic. The final composite had 19-mu m-wide posts separated by 6-mu m-wide polymer kerfs. A novel method to remove metal electrodes from polymer portions of the 1-3 composite was established to eliminate the need for patterning and aligning the electrode on the composite to the electrodes on a flexible circuit. Unloaded epoxy was used for both the matching and backing layers and a flexible circuit was used for interconnect. A prototype array was successfully fabricated and tested. The results were in reasonable agreement with those predicted by a circuit-analogous model. The average center frequency estimated from the measured pulse-echo responses of array elements was 33.5 MHz and the -6-dB fractional bandwidth was 57%. The average insertion loss recorded was 14.3 dB, and the maximum crosstalk between the nearest-neighbor elements was less than -37 dB. Images of a wire phantom and excised porcine eye were obtained to show the capabilities of the array for high-frequency ultrasound imaging.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36639
- DOI
- 10.1109/TUFFC.2011.1787
- ISSN
- 0885-3010
- Article Type
- Article
- Citation
- IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 58, no. 1, page. 206 - 214, 2011-01
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