Equivalent circuit for capacitive micromachined ultrasonic transducers to predict anti-resonances

Kemal, Remzi E.; Bozkurt, Ayhan; Yaralioglu, G.G.

doi:10.1007/s00542-020-04849-y

Cited by 3 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In (Tawfik et al, 2019), a CMUT with a reduced-gap architecture implemented in the polysilicon multiuser MEMS processes (PolyMUMPs) technology is introduced. An improved lumped element parametric model for immersed CMUT is presented in (Kemal et al, 2020). The North University of China (NUC) has conducted many explorations for CMUT (Hongliang et al, 2018a;Hongliang et al, 2014;Jinlong et al, 2015;Wang et al, 2019;Zhang et al, 2019), the application of CMUT in medical ultrasound imaging is the purpose of NUC research.…”

Section: Introductionmentioning

confidence: 99%

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Zhang

Shao

et al. 2021

View full text Add to dashboard Cite

Purpose Because of the small size and high integration of capacitive micromachined ultrasonic transducer (CMUT) component, it can be made into large-scale array, but this lead to high hardware complexity, so the purpose of this paper is to use less elements to achieve better imaging results. In this research, an optimized sparse array is studied, which can suppress the side lobe and reduce the imaging artifacts compared with the equispaced sparse array with the same number of elements. Design/methodology/approach Genetic algorithm is used to sparse the CMUT linear array, and Kaiser window apodization is added to reduce imaging artifacts, the beam pattern and peak-to-side lobe ratio are calculated, point targets imaging comparisons are performed. Furthermore, a 256-elements CMUT linear array is used to carry out the imaging experiment of embedded mass and forearm blood vessel, and the imaging results are compared quantitatively. Findings Through the imaging comparison of embedded mass and forearm blood vessel, the feasibility of optimized sparse array of CMUT is verified, and the purpose of reducing the hardware complexity is achieved. Originality/value This research provides a basis for the large-scale CMUT array to reduce the hardware complexity and the amount of calculation. At present, the CMUT array has been used in medical ultrasound imaging and has huge market potential.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Zhang

Shao

et al. 2021

View full text Add to dashboard Cite

show abstract

A General Equivalent Circuit Model for PMUTs Array Working in Multi-Vibration Modes

Abbaszadeh

et al. 2022

2022 IEEE International Ultrasonics Symposium (IUS)

View full text Add to dashboard Cite

Equivalent circuit for analyzing the transmitting characteristics of multimode Tonpilz transducer

Pyo

Roh

2022

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

Multimode Tonpilz transducers operate at longitudinal and flexural vibration modes simultaneously. Consequently, they have wider bandwidths than conventional single-mode transducers. Generally, the performance of Tonpilz transducers is analyzed using the finite element method (FEM), whereas the equivalent circuit method (ECM) has proven to be a fast and efficient alternative to the FEM. However, the ECM for analyzing the acoustic characteristics of multimode Tonpilz transducers has not yet been developed. To address this issue, an equivalent circuit for the multimode Tonpilz transducer is developed herein. The proposed ECM encompasses the flexural characteristics of the Tonpilz head mass, which is impossible with conventional equivalent circuits. Furthermore, a prototype of the multimode Tonpilz transducer was fabricated to verify the validity of the developed ECM. Additionally, the accuracy and compliance of the ECM were confirmed by comparing the measured performance of the transducer with that from the equivalent circuit analysis.

show abstract

Equivalent circuit for capacitive micromachined ultrasonic transducers to predict anti-resonances

Cited by 3 publications

References 23 publications

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

Research on optimization sparse method for capacitive micromachined ultrasonic transducer array: heuristic algorithm

A General Equivalent Circuit Model for PMUTs Array Working in Multi-Vibration Modes

Equivalent circuit for analyzing the transmitting characteristics of multimode Tonpilz transducer

Contact Info

Product

Resources

About