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. 16, 2021
Filed:
Aug. 27, 2019
Murata Manufacturing Co., Ltd., Nagaokakyo, JP;
Toshishige Koreeda, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A multiplexer includes a first filter that is a ladder elastic wave filter including series-arm resonators and parallel-arm resonators, a second filter connected to the first filter at a common connection point, and a board including an inductor pattern defining an inductor connected in parallel with the series-arm resonator, and a ground pattern provided in the layer in which the inductor pattern is provided, so as to be disposed at a distance from and adjacent to the inductor pattern. A minimum distance between the inductor pattern and the ground pattern is not greater than about 1.55 times a minimum pattern width in the ground pattern.