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:
Nov. 11, 1986
Filed:
Jul. 19, 1985
Applicant:
Inventor:
Roy B Brown, Apopka, FL (US);
Assignee:
Sawtek, Inc., Orlando, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ;
U.S. Cl.
CPC ...
333151 ; 3103 / ; 333153 ; 333194 ; 333195 ;
Abstract
A surface acoustic wave device in a piezoelectric medium includes input and output transducers for launching and detecting a surface acoustic wave along the piezoelectric medium. The device is arranged in a ring loop to process the bidirectional acoustic wave launched from the input transducer. Multistrip couplers in the ring loop between the input and output transducers are used to achieve low loss characteristics. A phase shift introduced by the multistrip couplers between portions of the surface acoustic wave is used to cancel triple-transit reflections.