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:
Mar. 27, 2007
Filed:
Jan. 28, 2005
Kamran S. Cheema, Apopka, FL (US);
Mei Yuin Foo, Longwood, FL (US);
Aytac Aydin, Bourron Marlotte, FR;
Kamran S. Cheema, Apopka, FL (US);
Mei Yuin Foo, Longwood, FL (US);
Aytac Aydin, Bourron Marlotte, FR;
Triquint, Inc., Orlando, FL (US);
Abstract
A miniaturized SAW duplexer includes SAW filters carried on a monolithic piezoelectric chip that is mounted inside a multi-layered ceramic package. A phase matching stripline is embedded diagonally and between two ground layers of the multi-layered ceramic package and is positioned between a wall of vias for significantly minimizing coupling between transmitted and received filters by providing an improved ground shielding of the phase matching stripline. Coupling within the same filter and coupling between the SAW filters are suppressed and thus provide enhanced isolation performance. for the SAW duplexer.