The following paper presents an idea of minimising the number of connections of individual piezoelectric transducers in a row-column multielement passive matrix system used for imaging of biological media structure by means of ultrasonic projection. It allows to achieve significant directivity with acceptable input impedance decrease. This concept was verified by designing a model of a passive ultrasonic matrix consisting of 16 elementary piezoceramic transducers, with electrode attachments optimised by means of electronic switches in rows and columns. Distributions of acoustic field generated by the constructed matrix model in water and results of the calculations conformed well.

JO - Archives of Acoustics L1 - http://journals.pan.pl/Content/107524/PDF/64.pdf L2 - http://journals.pan.pl/Content/107524 IS - No 1 EP - 109 KW - ultrasonic projection KW - directional ultrasonic transducer matrix KW - multielement ultrasonic probe KW - electrode attachment optimisation ER - A1 - OpieliĆski, Krzysztof A1 - Gudra, Tadeusz A1 - Pruchnicki, Piotr PB - Committee on Acoustics PAS, PAS Institute of Fundamental Technological Research, Polish Acoustical Society VL - vol. 35 JF - Archives of Acoustics SP - 91 T1 - Narrow Beam Ultrasonic Transducer Matrix Model for Projection Imaging of Biological Media UR - http://journals.pan.pl/dlibra/docmetadata?id=107524 DOI - 10.2478/v10168-010-0007-3