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:
Dec. 30, 2003
Filed:
Jan. 09, 2002
Applicant:
Inventors:
Juha Ellä, Halikko, FI;
Robert Aigner, München, DE;
Assignee:
Nokia Corporation, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/54 ; H03H 9/70 ; H03H 9/205 ; H03H 7/42 ; H01L 4/100 ;
U.S. Cl.
CPC ...
H03H 9/54 ; H03H 9/70 ; H03H 9/205 ; H03H 7/42 ; H01L 4/100 ;
Abstract
A bulk acoustic wave device having two resonators in a stacked-up configuration separated by a dielectric layer. The device can be coupled to a lattice filter or a ladder filter to form a passband filter with an unbalanced input port and two balanced output ports. One or more such passband filters can be used, together with another lattice or ladder filter, to form a duplexer having an unbalanced antenna port, two balanced ports for one transceiver part and two balanced ports for another transceiver part.
Quick Actions:
Ellä, Juha. (2003). Bulk acoustic wave resonator with two piezoelectric layers as balun in filters and duplexers (U.S. Patent No. 6670866). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6670866
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile