A wide-band stagger-tuned transducer used for pulsed ultrasonic Doppler flowmeter

Author

Zhang, Yili ; Chen, Qimin ; Zang, Xiaofei ; Hou, Zhezang

Author_Institution

Appl. Acoust. Inst., Shaanxi Teachers Univ., China

fYear

1989

fDate

9-12 Nov 1989

Firstpage

1110

Abstract

A stagger-tuned wide-band transducer based on the principle of the stagger-tuned amplifier has been developed. A number of strip-shaped PZT-5A elements with different resonant frequencies were arranged according to tuning theory. The results of the experiments indicate that the frequency response of the transducer is very good over a fairly large range. The bandwidth of a stagger-tuned transducer designed for a frequency range of 2-3 MHz is about 1.36 MHz, whereas the bandwidth of a single-element transducer is only 0.05 MHz. Moreover, as compared with the single-element transducer, it gives far more abundant blood-flow information

Keywords

biomedical equipment; biomedical ultrasonics; flowmeters; haemodynamics; ultrasonic transducers; 1.36 MHz; 2 to 3 MHz; PZT; PbZrO3TiO3; bandwidth; blood-flow information; frequency response; pulsed ultrasonic Doppler flowmeter; resonant frequencies; strip-shaped PZT-5A elements; tuning theory; wide-band stagger-tuned transducer; Acoustic transducers; Bandwidth; Blood flow; Frequency response; Impedance; Pulse amplifiers; Tuning; Ultra wideband technology; Ultrasonic transducers; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.96110

Filename

96110