Patent · US Expired

Ultrasonic transducer with a plastic piezoelectric receiving layer and a non plastic transmitting layer

US4354132A · kind A · utility

28Cited by

3References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Jacques Borburgh · Baiersdorf, DE
Ingmar Feigt · Langensendelbach, DE

Key dates

Filing date	Feb 28, 1980
Grant date	Oct 12, 1982
Priority date	—
Expiry date	Feb 28, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S310/80
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

In exemplary embodiments, a transmitting layer of material having a relatively high dielectric constant and high acoustic impedance, and a receiving layer of material having a relatively low dielectric constant and low acoustic impedance are superimposed such that an optimum construction is provided which simultaneously creates optimum results for the instance of transmission and reception. The two layers are interconnected by means of hybrid techniques such that they mate in a laminar manner.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.