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. 22, 2003
Filed:
Mar. 22, 2001
Ou Hok Huor, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A resonator-type SAW filter has a ladder network of SAW resonators with respective interdigital transducers and reflectors. Individual ground patterns are provided for each interdigital transducer and each reflector in the shunt-arm SAW resonators. These ground patterns are electrically isolated from one another, and are grounded through separate bonding wires or other conductors that couple the ground patterns to a ground lead. This independent grounding scheme is found to improve the attenuation characteristic of the filter on the low side of the passband.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile