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

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

doi:10.1016/j.measurement.2019.04.050

Cited by 11 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…BVD model is not suitable for high frequency transducer performance from material parameters. Leach model is widely used, but most of the applications lack the modeling of matching layer, backing layer and cable (Van Deventer and Lofqvist, 2000;Johansson and Martinsson, 2001;Roa-Prada et al, 2007;Aouzale et al, 2008;Chahal and Reddy, 2013;Tarpara and Patankar, 2018;Takahashi et al, 2019;Zheng et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

Shen

et al. 2021

Front. Mater.

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

Shen

et al. 2021

Front. Mater.

View full text Add to dashboard Cite

show abstract

“…Thus, designing a PVDF ultrasonic sensor requires careful considerations regarding film thickness and active area, electroding selection, backing material, construction procedure, and packaging requirements to improve the ultrasound performance for the desired application and required ultrasound penetration depth [72,151,152].…”

Section: Wearable Ultrasonic Transducersmentioning

confidence: 99%

“…There are two main approaches for the theoretical study of piezoelectric material-based ultrasonic sensors [152]: the finite element analysis (FEA) and the equivalent electrical circuit. In the FEA, the structure of an ultrasonic sensor is divided, in terms of geometry of the piezoelectric resonator, into a finite number of simple geometrically shaped elements.…”

Section: Review Of Piezoelectric Simulation Modelsmentioning

confidence: 99%

“…The mesh of finite elements is mathematically described by a set of linear differential equations. Thus, the finite elements allow the computation of the mechanical and electrical behavior of a piezoelectric element [159][160][161] [152,162].…”

Section: Review Of Piezoelectric Simulation Modelsmentioning

confidence: 99%

“…In contrast, a numerical simulation based on the equivalent circuit modeling approach would provide a faster computation speed and accurate prediction with less extensive computation hardware [152,171]. Several equivalent circuit models are proposed in literature such as the Mason's model [73,172], Redwood's model [173], KLM model [174,175], Rhyne's model [176], and Leach's model [177].…”

Section: Review Of Piezoelectric Simulation Modelsmentioning

confidence: 99%

See 2 more Smart Citations

Design and Construction of a Double-Layer PVDF Wearable Ultrasonic Sensor for the Quantitative Assessment of Muscle Contractile Properties

AlMohimeed¹

View full text Add to dashboard Cite

Assessment of the skeletal muscle contractile properties provides valuable information for various medical applications. This thesis presents the development of a wearable ultrasonic sensor (WUS) and a method to measure the skeletal muscle contractile parameters.The proposed WUS was made of flexible polyvinylidene fluoride (PVDF) piezoelectric polymer film. A double-layer PVDF configuration was proposed to improve ultrasonic performance such as ultrasound signal strength. In order to study the double-layer PVDF WUS performance for its design consideration, a formulation of a numerical simulation model for the double-layer PVDF WUS was derived, based on Mason's equivalent circuit model of piezoelectric resonators. The double-layer PVDF configuration and the effects of non-piezoelectric layers on ultrasonic performance, such as backing, bonding, and electrode layers, were studied in detail using the simulation model developed to obtain a guideline for the design and construction of double-layer PVDF WUS. The construction procedure of the proposed design of the double-layer PVDF WUS was simple and relatively low-cost.The experimental evaluation showed the improved ultrasound performance of the developed double-layer PVDF WUS. The flexibility, lightweight, thinness, and small size of the double-layer PVDF WUS enable a steady attachment to the skin surface without affecting the underlying tissue motion in the area of interest. Such features could reduce the motion artifacts in the ultrasound measurement of tissue thickness. The developed double-layer PVDF WUS was tested for in vivo measurements of the skeletal muscle contractile parameters.Comparative measurements of the electrically-evoked static contractions of a skeletal muscle i iii Table of Contents iv List of Abbreviations xxvii List of Symbols xxxi List of AbbreviationsAcronym Definition A-mode Amplitude mode ACL Anterior cruciate ligament AlN Aluminium nitride B-mode Brightness mode CMUT Capacitive micromachined ultrasound transducer CNT Carbon nanotube COPD Chronic obstructive pulmonary disease CP Cerebral palsy CTT1/2 Contraction time to half tetanic CV Coefficient of variation DAQ Data Acquisition

show abstract

Optimization design of high-frequency ultrasonic transducer based on ANFIS and particle swarm optimization algorithm

et al. 2022

View full text Add to dashboard Cite

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

Cited by 11 publications

References 10 publications

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

An Improved Equivalent Circuit Simulation of High Frequency Ultrasound Transducer

Design and Construction of a Double-Layer PVDF Wearable Ultrasonic Sensor for the Quantitative Assessment of Muscle Contractile Properties

Optimization design of high-frequency ultrasonic transducer based on ANFIS and particle swarm optimization algorithm

Contact Info

Product

Resources

About