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:
Oct. 28, 2025
Filed:
Sep. 23, 2021
Applicant:
Qorvo Us, Inc., Greensboro, NC (US);
Inventor:
Nadim Khlat, Cugnaux, FR;
Assignee:
Qorvo US, Inc., Greensboro, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/70 (2006.01); H03H 9/205 (2006.01); H03H 9/54 (2006.01); H03H 9/60 (2006.01);
U.S. Cl.
CPC ...
H03H 9/706 (2013.01); H03H 9/205 (2013.01); H03H 9/542 (2013.01); H03H 9/605 (2013.01);
Abstract
An acoustic filter providing negative capacitance for use in multiplexers is provided that may include a first resonator and a second resonator. The second resonator may be a three terminal element that includes two sub-resonator elements having opposite polarities that are mechanically coupled such that as one sub-resonator expands, the other contracts. The second resonator may act as a negative capacitance element relative to the first resonator such that the second resonator provides cancelation at specific frequencies. This structure may further reduce the order of an N-multiplexer ladder network and reduce total insertion loss.