Optimization of equivalent circuit model for piezoelectric ultrasonic transducer

Zheng, Dandan; Mao, Yang; Cui, Ziqiang; Lv, Sheng-Hong

doi:10.1109/i2mtc.2018.8409525

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…The propagation of sound waves in the tissue layer is simulated by using a lossy transmission line model. The parameters of the lossy transmission line are as follows [14]:…”

Section: B Ultrasonic Backscatter Communication Channelmentioning

confidence: 99%

Simulation of bulk piezoelectric implant with amplitude modulation-based backscatter communication for implant applications

Akhtar

Toymus

Beker

2021

2021 IEEE International Ultrasonics Symposium (IUS)

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Recently, ultrasound has been used for power transfer and backward data transmission from implantable medical devices. Backward data communication is typically based on the amplitude modulation of the backscattered signal with changing electrical load of the implant. Contrary to its importance, the sensitivity of the backscattered voltage with reference to the electrical load has not been quantitatively determined yet. This work presents the results of transient simulations and shows the increasing trend in echo voltage with the increasing load resistance. Additionally, simulation studies indicate a decreasing sensitivity of echo voltage to load resistance with increasing backing impedance of the implant.

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“…The propagation of sound waves in the tissue layer is simulated by using a lossy transmission line model. The parameters of the lossy transmission line are as follows [14]:…”

Section: B Ultrasonic Backscatter Communication Channelmentioning

confidence: 99%

Simulation of bulk piezoelectric implant with amplitude modulation-based backscatter communication for implant applications

Akhtar

Toymus

Beker

2021

2021 IEEE International Ultrasonics Symposium (IUS)

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“…The design and performance prediction of ultrasound transducers require appropriate software tools, which involve a variety of knowledge of acoustics, electronics, and ultrasonic properties of the propagation medium (Merdjana et al, 2014;Rathod, 2020). The finite element model and equivalent circuit model are the main research methods (Zheng et al, 2018). For example, Comsol, a commercial software based on the finite element model, divides the transducer into many small units for calculation (Fan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

Shen

et al. 2021

Front. Mater.

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The equivalent circuit simulation plays an important role in the design of ultrasound transducer. However, the existing methods are difficult to achieve the effect of matching and backing layer, and not able to accurately simulate the transducer with cable. Especially in the application of high frequency ultrasound, the long cable has a great influence on the performance of the transducer. To overcome these limitations, this paper proposed an improved equivalent circuit method, which combined Leach model and transmission line model. It can realize the complete simulation of ultrasound transducer with a long cable, matching layer, and backing layer in PSPICE circuit simulation software when the parameters were measured. Its principles were briefly introduced, and ultrasound transducers with different frequencies (12 and 20 MHz), different matching layers, and different cable lengths (0.5–2.5 m) were designed and fabricated to verify the effectiveness of the method, which is also compared with the traditional KLM method using PiezoCAD. The experiment results showed that the long cable, matching layer, and backing layer have a significant impact on the performance of high frequency ultrasound transducers, and this proposed method has good agreement with these results. Moreover, for the simulation of the complete transducer, the effect of this method is better than KLM model. Besides, this method does not need to know the specific equivalent circuit of matching, backing layer, or cable wire, it can accurately predict the impedance and phase of the transducer through the material parameters, which is very helpful for the material selection and optimization of subsequent transducer design and fabrication. The study indicates that this improved equivalent circuit method is suitable to be applied in the general circuit simulation software and provides strong support for the high frequency transducer and system design.

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Research and validation of design principles for PVDF wideband ultrasonic transducers based on an equivalent circuit model

Zheng

Mao

2019

Measurement

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Optimization of equivalent circuit model for piezoelectric ultrasonic transducer

Cited by 4 publications

References 6 publications

Simulation of bulk piezoelectric implant with amplitude modulation-based backscatter communication for implant applications

Simulation of bulk piezoelectric implant with amplitude modulation-based backscatter communication for implant applications

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

Research and validation of design principles for PVDF wideband ultrasonic transducers based on an equivalent circuit model

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