SPICE Modeling of Hybrid Multi-Frequency Ultrasound Transducer
نویسندگان
چکیده
Whereas ultrasound application has been emerging, the need of reliable transducer to comply with that purpose is also aroused. Multi-resonance transducer using lead zirconate titanate piezoelectric ceramics (PZT) was designed several years ago for dual Doppler and B mode use. As polymer material being popular in medical ultrasound, there are chances to combine it with former piezoelectric material in designing diagnostic transducer to get hybrid characteristics required for multi-frequency application. In this work, SPICE model of ceramic-polymer piezoelectric has been described. Using Leach’s approach, the modeled transducer covers triple peaks resonances. Electro-acoustic circuit simulation level shows that by hybridization, characteristics of both materials are providing a satisfying performance for multi-frequency transducer. Key-Words: Piezoelectric, Ceramic, Polymer, SPICE, Ultrasound, Transducer, Modeling
منابع مشابه
Crossed SMPS MOSFET-based protection circuit for high frequency ultrasound transceivers and transducers
BACKGROUND The ultrasonic transducer is one of the core components of ultrasound systems, and the transducer's sensitivity is significantly related the loss of electronic components such as the transmitter, receiver, and protection circuit. In an ultrasonic device, protection circuits are commonly used to isolate the electrical noise between an ultrasound transmitter and transducer and to minim...
متن کاملNumerical Study for Optimizing Parameters of High-Intensity Focused Ultrasound-Induced Thermal Field during Liver Tumor Ablation: HIFU Simulator
Introduction High intensity focused ultrasound (HIFU) is considered a noninvasive and effective technique for tumor ablation. Frequency and acoustic power are the most effective parameters for temperature distribution and the extent of tissue damage. The aim of this study was to optimize the operating transducer parameters such as frequency and input power in order to acquire suitable temperatu...
متن کاملNumerical Study and Optimisation of a Novel Single-Element Dual-Frequency Ultrasound Transducer
A dual-frequency ultrasound transducer (DFUT) is usually preferred for its numerous advantageous applications, especially in biomedical imaging and sensing. However, most of DFUTs are based on the combination of fundamental and harmonic operations, or integration of multiple different single-frequency ultrasound transducers, hindering perfect beam alignment and acoustic impedance matching. A no...
متن کاملModeling of Multi-View 3D Freehand Radio Frequency Ultrasound
Nowadays ultrasound (US) examinations are typically performed with conventional machines providing two dimensional imagery. However, there exist a multitude of applications where doctors could benefit from three dimensional ultrasound providing better judgment, due to the extended spatial view. 3D freehand US allows acquisition of images by means of a tracking device attached to the ultrasound ...
متن کاملPower amplifier for ultrasonic transducer excitation
Design of the power amplifier for ultrasonic transducer excitation is presented. We assumed that the amplifier output impedance will be significantly lower than the transducer input impedance. Therefore we suggest to used the transformer as voltage step-up and impedance matching element. The transformer influence on the ultrasonic transducer bandwidth and the power transfer efficiency are analy...
متن کامل