Filter and duplexer

Wave transmission lines and networks – Plural channel systems – Having branched circuits

Reexamination Certificate

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Details

C333S193000, C333S189000

Reexamination Certificate

active

07548135

ABSTRACT:
A filter includes a filter chip, a laminated portion on which the filter chip is mounted, an input/output terminal provided in the laminated portion, a first U-shaped line pattern provided on a first layer and coupled to the filter chip, the first layer being included in the laminated portion between the filter chip and the input/output terminal, and a second U-shaped line pattern provided on a second layer to substantially overlap the first U-shaped line pattern and coupled to the first U-shaped line pattern and the input/output terminal, the second layer being included in the laminated portion between the first layer and the input/output terminal.

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