Capacitive ultrasonic transducer with net backplate

Pentti Mattila; Jyrki Stor-Pellinen; Janne Ignatius; Jarmo Hietanen; Mauri Luukkala

doi:10.1088/0957-0233/11/8/304

Capacitive ultrasonic transducer with net backplate

Pentti Mattila
, Jyrki Stor-Pellinen
, Janne Ignatius
, Jarmo Hietanen
, Mauri Luukkala

VTT Technical Research Centre of Finland

University of Helsinki
Helsinki University of Technology
Nokia Oyj
VTT (former employee or external)

Research output: Contribution to journal › Article › Scientific › peer-review

12 Citations (Scopus)

Abstract

A study is presented of the function of an air-coupled capacitive ultrasonic transducer with uniform net backplate. Net backplates are an easy, fast-to-assemble alternative to grooved backplates. The frequency responses of the transducers were measured and the resonance frequencies were estimated. A procedure to study the electrostatics of the transducer with net backplate geometry is described with calculations of surface charge density distribution, capacitance and sensitivity.

Original language	English
Pages (from-to)	1119-1125
Journal	Measurement Science and Technology
Volume	11
Issue number	8
DOIs	https://doi.org/10.1088/0957-0233/11/8/304
Publication status	Published - 2000
MoE publication type	A1 Journal article-refereed

Keywords

capacitance
ultrasonic transmitting response
ultrasonic transducer
capacitive transducer
net backplate
air-borne ultrasound

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10.1088/0957-0233/11/8/304

Cite this

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abstract = "A study is presented of the function of an air-coupled capacitive ultrasonic transducer with uniform net backplate. Net backplates are an easy, fast-to-assemble alternative to grooved backplates. The frequency responses of the transducers were measured and the resonance frequencies were estimated. A procedure to study the electrostatics of the transducer with net backplate geometry is described with calculations of surface charge density distribution, capacitance and sensitivity. ",

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AU - Mattila, Pentti

AU - Stor-Pellinen, Jyrki

AU - Ignatius, Janne

AU - Hietanen, Jarmo

AU - Luukkala, Mauri

PY - 2000

Y1 - 2000

N2 - A study is presented of the function of an air-coupled capacitive ultrasonic transducer with uniform net backplate. Net backplates are an easy, fast-to-assemble alternative to grooved backplates. The frequency responses of the transducers were measured and the resonance frequencies were estimated. A procedure to study the electrostatics of the transducer with net backplate geometry is described with calculations of surface charge density distribution, capacitance and sensitivity.

AB - A study is presented of the function of an air-coupled capacitive ultrasonic transducer with uniform net backplate. Net backplates are an easy, fast-to-assemble alternative to grooved backplates. The frequency responses of the transducers were measured and the resonance frequencies were estimated. A procedure to study the electrostatics of the transducer with net backplate geometry is described with calculations of surface charge density distribution, capacitance and sensitivity.

KW - capacitance

KW - ultrasonic transmitting response

KW - ultrasonic transducer

KW - capacitive transducer

KW - net backplate

KW - air-borne ultrasound

U2 - 10.1088/0957-0233/11/8/304

DO - 10.1088/0957-0233/11/8/304

M3 - Article

SN - 0957-0233

VL - 11

SP - 1119

EP - 1125

JO - Measurement Science and Technology

JF - Measurement Science and Technology

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ER -

Capacitive ultrasonic transducer with net backplate

Abstract

Keywords

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