The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 2000
Filed:
Oct. 06, 1997
Applicant:
Inventors:
Peter G Barthe, Phoenix, AZ (US);
Michael H Slayton, Tempe, AZ (US);
Assignee:
Albatros Technologies, Inc., Mesa, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ; H01L / ;
U.S. Cl.
CPC ...
310334 ; 310326 ;
Abstract
A transducer according to various aspects of the present invention provides high fractional bandwidth with relatively low degradation of the pulse duration and sensitivity. The transducer includes a back matching layer behind the transducer material. The back matching layer is characterized by an impedance selected to transmit a selected portion of the backwards propagating acoustic energy to an absorption layer. The remaining acoustic energy is reflected in the desired direction of propagation. As a result, the transducer provides enhanced bandwidth without excessive loss of sensitivity or increase in pulse duration.