Title:
SAMPLING FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/072712
Kind Code:
A1
Abstract:
There is provided a sampling filter device, the filter characteristic of which can be changed without using a complicated waveform as a control signal. The sampling filter device (100) comprises a controller (140), a plurality of integrators, and a plurality of switches. Input current is accumulated in a plurality of capacitors in response to a single clock signal, and the charges accumulated in the integrators from several clocks before to one clock before are added and outputted. When accumulating charges into the integrators in response to each clock signal, switching the input current makes it possible to weigh and add the charges to be outputted, so the filter characteristic changes.
Inventors:
MIYANO KENTARO
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MATSUOKA AKIHIKO
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MATSUOKA AKIHIKO
Application Number:
PCT/JP2006/324765
Publication Date:
June 28, 2007
Filing Date:
December 12, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
MIYANO KENTARO
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MATSUOKA AKIHIKO
MIYANO KENTARO
HOSOKAWA YOSHIFUMI
ABE KATSUAKI
MATSUOKA AKIHIKO
International Classes:
H03H19/00
Foreign References:
| JPH03160814A | 1991-07-10 | |||
| JPS58107712A | 1983-06-27 | |||
| JP2000031788A | 2000-01-28 | |||
| JP2002064380A | 2002-02-28 | |||
| JPH10163912A | 1998-06-19 |
Attorney, Agent or Firm:
ICHIKAWA, Toshimitsu et al. (7-13 Nishi-Shimbashi 1-chom, Minato-ku Tokyo 03, JP)
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