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. 10, 2026
Filed:
Apr. 24, 2024
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Motoki Ozasa, Nagaokakyo, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A multiplexer includes a first filter with a first pass band, and a second filter with a second pass band higher than the first pass band. Acoustic wave resonators included in the second filter include a first series-arm resonator on a series arm path of the second filter, a second series-arm resonator connected in parallel with the first series-arm resonator, and a parallel-arm resonator on a parallel arm path connecting a connection point between the first and second series-arm resonators to the ground. A series-arm resonator including the first and second series-arm resonators has an anti-resonant frequency lower than the second pass band and an anti-resonant frequency higher than the second pass band. The parallel-arm resonator has an anti-resonant frequency lower than a lower frequency end of the second pass band.