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:
Jun. 20, 1978
Filed:
Feb. 23, 1977
Applicant:
Inventor:
William Seth Drummond, Cornelius, OR (US);
Assignee:
Tektronix, Inc., Beaverton, OR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ; H03H / ;
U.S. Cl.
CPC ...
333 / ; 310313 ; 333 72 ;
Abstract
A two stage surface wave termination for a surface acoustic wave device, such as a filter or delay line. The termination includes a wafer of an acoustically lossy, relatively hard polymeric material that is bonded to the surface of the SAW device's piezoelectric substrate between an end of the substrate and an interdigitated transducer provided thereon. A band of an elastomeric material is bonded to the substrate along the edge of the wafer nearest the transducer.