TY - GEN
T1 - A Study of the driving circuit for array transducer considering its impedance properties
AU - Jimbo, Hayato
AU - Goto, Kota
AU - Yoshizawa, Shin
AU - Umemura, Shin Ichiro
PY - 2015/11/13
Y1 - 2015/11/13
N2 - A multi-channel array transducer can enlarge the treatment volume of HIFU (High-Intensity Focused Ultrasound), which is a noninvasive method for cancer therapy, by generating and scanning multiple foci. In our previous study, we developed a compact and highly efficient driving circuit using staircase wave voltage for typical single HIFU transducer that the impedance is almost real at the resonance frequency. However, an array transducer element can have too capacitive impedance that affects the output voltage waveform designed for reducing the harmonics components. To solve this problem, we propose a new circuit to drive an array transducer considering its imaginary impedance. The proposed circuit was able to reduce not only the odd harmonics but also electrical power consumption. Simulation of the relationship between the number of staircase wave steps and the power consumption proved that the total power consumption due to intentional turn-on decreased in proportion to the number of steps.
AB - A multi-channel array transducer can enlarge the treatment volume of HIFU (High-Intensity Focused Ultrasound), which is a noninvasive method for cancer therapy, by generating and scanning multiple foci. In our previous study, we developed a compact and highly efficient driving circuit using staircase wave voltage for typical single HIFU transducer that the impedance is almost real at the resonance frequency. However, an array transducer element can have too capacitive impedance that affects the output voltage waveform designed for reducing the harmonics components. To solve this problem, we propose a new circuit to drive an array transducer considering its imaginary impedance. The proposed circuit was able to reduce not only the odd harmonics but also electrical power consumption. Simulation of the relationship between the number of staircase wave steps and the power consumption proved that the total power consumption due to intentional turn-on decreased in proportion to the number of steps.
KW - HIFU
KW - array transducer
KW - driving circuit
KW - impedance properties
KW - power consumption
UR - http://www.scopus.com/inward/record.url?scp=84961999725&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961999725&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2015.0429
DO - 10.1109/ULTSYM.2015.0429
M3 - Conference contribution
AN - SCOPUS:84961999725
T3 - 2015 IEEE International Ultrasonics Symposium, IUS 2015
BT - 2015 IEEE International Ultrasonics Symposium, IUS 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Ultrasonics Symposium, IUS 2015
Y2 - 21 October 2015 through 24 October 2015
ER -
