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. 16, 2019
Filed:
Oct. 19, 2016
Qorvo Us, Inc., Greensboro, NC (US);
Jeff D. Galipeau, Apopka, FL (US);
Lawrence A. Carastro, Windermere, FL (US);
Scott M. Knapp, Orlando, FL (US);
Qorvo US, Inc., Greensboro, NC (US);
Abstract
A Bulk Acoustic Wave (BAW) filter includes a series branch coupled between an input node and an output node. The series branch has multiple BAW resonators that are coupled in series, wherein a first series resonator is coupled between a first node and a second node in the series branch. A first shunt resonator is coupled between the first node and a fixed voltage node, such as ground, and a second shunt resonator is coupled between the second node and the fixed voltage node. Further, a first inductor is coupled between the first node and the fixed voltage node, and a second inductor is coupled between the second node and the fixed voltage node. The first inductor and the second inductor are magnetically coupled to one another to generate a virtual inductance between the first node and the second node and in parallel with the first series resonator.