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An in-probe electronics printed circuit board (PCB) has been designed and built to improve the electrical matching issue in 2D ultrasonic array design. Each array channel has a dedicated line driver and the design utilized has low power consumption and importantly, a small footprint. Thus, the design is compatible with NDE probes, in which 128 elements are typical. The in-probe PCB was evaluated using a piezoceramic element scaled to obtain a 1k Omega impedance. Connected to the line driver, but otherwise acoustically un-matched, un-backed, the pulse-echo response from this element was acquired. Experimental results show an approximate 50dB improvement in sensitivity and an enhancement in bandwidth from 14.4% to 22.5% when compared to the ceramic interfaced directly to a standard 2m coaxial cable.
|Title of host publication||2012 IEEE International Ultrasonics Symposium (IUS) Proceedings|
|Place of Publication||9781467345620|
|Number of pages||4|
|Publication status||Published - 2012|
|Event||IEEE International Ultrasonics Symposium 2012 - Dresden, Germany|
Duration: 7 Oct 2012 → 10 Oct 2012
|Conference||IEEE International Ultrasonics Symposium 2012|
|Period||7/10/12 → 10/10/12|
- ultrasonic array
- 2D phased array sensitivity
- probe electronics
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