Title:
サンプリングフィルタ装置
Document Type and Number:
Japanese Patent JP5182897
Kind Code:
B2
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.
Inventors:
Satoshi Tsukamoto
Noriaki Saito
Abe Katsuaki
Kentaro Miyano
Hosokawa Yoshifumi
Yasuyuki Naito
Noriaki Saito
Abe Katsuaki
Kentaro Miyano
Hosokawa Yoshifumi
Yasuyuki Naito
Application Number:
JP2009549991A
Publication Date:
April 17, 2013
Filing Date:
January 16, 2009
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H03H19/00
Domestic Patent References:
| JP2006211153A | 2006-08-10 | |||
| JP2007243431A | 2007-09-20 | |||
| JP2003510933A | 2003-03-18 | |||
| JP2007189666A | 2007-07-26 | |||
| JP2006211153A | 2006-08-10 |
Foreign References:
| WO2007148693A1 | 2007-12-27 | |||
| WO2007148693A1 | 2007-12-27 |
Attorney, Agent or Firm:
Kimihide Hashimoto
Shohei Oguri
Yoshiaki Masaaki
Toshimitsu Ichikawa
Shohei Oguri
Yoshiaki Masaaki
Toshimitsu Ichikawa