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:
Jul. 03, 2001
Filed:
Feb. 07, 1996
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/64 ;
U.S. Cl.
CPC ...
H03H 9/64 ;
Abstract
An object of the present invention is to realize a resonator-type SAW filter permitting higher extra-passband suppressibility by minimizing occurrence of an unwanted spurious peak. A resonator-type SAW filter in which a plurality of SAW resonators each having reflectors and an interdigital transducer and being connected in series and parallel with the other, wherein in at least one of the SAW resonators, particularly in at least one of the SAW resonators connected in series with one another, an inter-electrode pitch &lgr;,in the reflectors has a different value from an inter-electrode pitch &lgr;,in the interdigital transducers.