Invention Grant
- Patent Title: Balanced lattice filter device
- Patent Title (中): 平衡网格滤波器
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Application No.: US11984639Application Date: 2007-11-20
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Publication No.: US07880566B2Publication Date: 2011-02-01
- Inventor: Koichi Wada
- Applicant: Koichi Wada
- Applicant Address: JP Tokyo
- Assignee: Taiyo Yuden Co., Ltd.
- Current Assignee: Taiyo Yuden Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Arent Fox LLP
- Priority: JP2006-315490 20061122
- Main IPC: H03H9/54
- IPC: H03H9/54 ; H03H9/64
Abstract:
A lattice-type filter circuit includes first and second balanced signal terminals; first and second balanced signal terminals; a first resonator connected to a series arm between the first balanced signal terminal on the input side and the first balanced signal terminal on the output side; a second resonator connected to a series arm between the second balanced signal terminal on the input side and the second balanced signal terminal on the output side; a first resonant circuit including impedance elements, being connected to a lattice arm between the first balanced signal terminal on the output side and the second balanced signal terminal on the input side; and a second resonant circuit including impedance elements, being connected to a lattice arm between the second balanced signal terminal on the output side and the first balanced signal terminal on the input side.
Public/Granted literature
- US20080117000A1 Filter device Public/Granted day:2008-05-22
Information query
IPC分类:
