Directional coupler

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12051843
APP PUB NO 20210376441A1
SERIAL NO

17331080

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Abstract

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A directional coupler includes a main line, a sub-line electromagnetically coupled with the main line, a coupled output terminal, plural filters, filter switching circuits, and plural filter protecting switches. Each of the filter switching circuits is able to connect a corresponding one of the plural filters to one end of the sub-line and to the coupled output terminal. Each of the filter protecting switches is directly connected to a corresponding end of a corresponding one of the plural filters and is able to switch between a connection state and a disconnection state. The connection state is a state in which the corresponding end of the corresponding one of the plural filters is connected to a reference potential. The disconnection state is a state in which the corresponding end of the corresponding one of the plural filters is disconnected from the reference potential.

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Patent Owner(s)

Patent OwnerAddress
MURATA MANUFACTURING CO LTDNAGAOKAKYO-SHI KYOTO 617-8555

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Ryangsu Kyoto, JP 29 88
Seki, Kenta Kyoto, JP 68 304
Shimizu, Katsuya Kyoto, JP 63 257
Tokuda, Daisuke Kyoto, JP 30 67

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