Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-bandwidth ultrasonic transducer and preparation method thereof

An ultrasonic transducer, high-bandwidth technology, applied in the direction of the fluid using vibration, can solve the problems of narrow frequency range and limited application, and achieve the effect of widening the bandwidth, improving the imaging quality, and improving the detection accuracy

Active Publication Date: 2021-06-15
SHENZHEN UNIV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned solution can reduce the difficulty of manufacturing the annular array transducer, the frequency band obtained by it is narrow, which limits its application in the field of ultrasonic harmonic imaging of gastrointestinal endoscope

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-bandwidth ultrasonic transducer and preparation method thereof
  • High-bandwidth ultrasonic transducer and preparation method thereof
  • High-bandwidth ultrasonic transducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 Shown is an embodiment of the high-bandwidth ultrasonic transducer of the present invention, including a matching layer 1, a backing layer 2, a plurality of piezoelectric array elements 3 arranged in an array, and an acoustic lens 4 for focusing ultrasonic beams , the piezoelectric array element 3 is provided with a first electrode surface 31 and a second electrode surface 32 arranged in a plane, the second electrode surface 32 is an emitting surface and is perpendicular to the polarization direction, and the first electrode surface 31 The spacing between the second electrode surface 32 and the second electrode surface 32 changes regularly, the backing layer 2, the piezoelectric array element 3, the matching layer 1, and the acoustic lens 4 are arranged in sequence, and the first electrode surface 31 is attached to the backing layer 2 and arranged , the second electrode surface 32 is attached to the matching layer 1 . In this embodiment, each piezoelec...

Embodiment 2

[0050] Such as Figure 7 Shown is the embodiment of the preparation method of the ultrasonic transducer of high bandwidth, comprises the following steps:

[0051] S10. bonding multiple piezoelectric block arrays to the matching layer 1, the matching layer 1 is a flexible and bendable structure;

[0052] S20. After step S10, polish the side of the piezoelectric block away from the matching layer 1, and reattach electrodes;

[0053] S30. After step S20, cut along the thickness change direction of the piezoelectric block to obtain the piezoelectric array element 3, the polished surface of the piezoelectric block is the first electrode surface 31, and the bonding surface of the piezoelectric block and the matching layer 1 is second electrode face 32;

[0054] S40. After step S30, lead out the signal line and the ground wire of the piezoelectric array element 3, and bend the matching layer 1 and the piezoelectric array element 3 to form a ring structure;

[0055] S50. After step...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of ultrasonic transducers, in particular to a high-bandwidth ultrasonic transducer and a preparation method thereof. The high-bandwidth ultrasonic transducer comprises matching layers, a backing layer, a plurality of piezoelectric array elements arranged in an array mode and an acoustic lens used for ultrasonic beam focusing; each piezoelectric array element is provided with a first electrode surface and a second electrode surface arranged in a plane mode, the second electrode surface is an emitting surface and is perpendicular to the polarization direction, and the distance between the first electrode surface and the second electrode surface changes regularly; the backing layer, the piezoelectric array elements, the matching layers and the acoustic lens are sequentially arranged; and the first electrode surfaces are attached to the backing layer, and the second electrode surfaces are attached to the matching layer. According to the high-bandwidth ultrasonic transducer, a piezoelectric unit is of a variable-thickness structure, after excitation voltage is applied, the parts, with different thicknesses, of the piezoelectric array elements vibrate at different frequencies, therefore, the bandwidth of the ultrasonic transducer is widened, the imaging quality and detection accuracy of the ultrasonic transducer are improved, and the ultrasonic transducer can be applied to harmonic imaging.

Description

technical field [0001] The present invention relates to the technical field of ultrasonic transducers, in particular to a high-bandwidth ultrasonic transducer and a preparation method thereof. Background technique [0002] As an ultrasonic imaging technology, harmonic imaging can obtain high-resolution images of deeper parts of the human body, and can effectively avoid various artifacts that are inevitably generated during the emission and propagation of fundamental components. Compared with the traditional ultrasonic shaping method of digestive tract, ultrasonic harmonic imaging technology can more effectively detect gastrointestinal submucosal tumors, pancreatic cancer and other gastrointestinal diseases. However, for harmonic imaging, since the whole system works in a wide frequency range from the fundamental wave to the harmonic, a broadband probe must be used to achieve harmonic imaging. Therefore, the high-bandwidth annular ultrasonic transducer is very important for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
CPCB06B1/0625B06B2201/55B06B2201/76
Inventor 彭珏李倚陈思平
Owner SHENZHEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com