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:
Feb. 06, 2024
Filed:
Aug. 25, 2021
Murata Manufacturing Co., Ltd., Kyoto, JP;
Katsuhito Kuroda, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A filter device () is formed between an input end (T) and an output end (T), and is configured to attenuate a radio frequency signal in a specific frequency band. The filter device () includes a dielectric substrate () having a multilayer structure, ground electrodes (GNDand GND) formed in the dielectric substrate (), a first coupling line () electrically connected to the input end (T), a second coupling line () electrically connected to the output end (T), and a stub () connected to the first coupling line () and the second coupling line (). The first coupling line () and the second coupling line () are formed in layers different from layers of the ground electrodes (GNDand GND). The first coupling line () and the second coupling line () are disposed in different layers so as to face each other.