Invention Grant
- Patent Title: Sampling filter device
- Patent Title (中): 取样过滤装置
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Application No.: US12812655Application Date: 2009-01-16
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Publication No.: US08711917B2Publication Date: 2014-04-29
- Inventor: Satoshi Tsukamoto , Noriaki Saito , Katsuaki Abe , Kentaro Miyano , Yoshifumi Hosokawa , Yasuyuki Naito
- Applicant: Satoshi Tsukamoto , Noriaki Saito , Katsuaki Abe , Kentaro Miyano , Yoshifumi Hosokawa , Yasuyuki Naito
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Pearne & Gordon LLP
- Priority: JP2008-007176 20080116
- International Application: PCT/JP2009/000148 WO 20090116
- International Announcement: WO2009/090883 WO 20090723
- Main IPC: H03H7/30
- IPC: H03H7/30 ; H03H7/40 ; H03K5/159

Abstract:
A sampling filter device wherein the filter characteristic is variable without using a control signal of a complicated waveform is provided. A sampling filter device 105 has integration capacitors 130 and 131, an integration time adjustment section 180, and a plurality of switches 100, 101, 110, and 111. Input current is integrated in different time duration with one clock and is stored in the integration capacitors 130 and 131 and charges stored in the integration capacitor from several clocks before to one clock before are added and the result is output. When charge is stored in the integration capacitors 130 and 131 with each clock, the integration time duration is changed, whereby it is made possible to weight and add output charge and the filter characteristic changes.
Public/Granted literature
- US20110013736A1 SAMPLING FILTER DEVICE Public/Granted day:2011-01-20
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