Title:
サンプリングフィルタ装置および無線通信装置
Document Type and Number:
Japanese Patent JP5121069
Kind Code:
B2
Abstract:
The present invention has an object to provide a sampling filter apparatus and a wireless communication apparatus, which are capable of changing a filter characteristic without employing complex waveforms as control signals, and also, capable of performing filtering process operations without performing a decimation, while utilizing a wide frequency space. A sampling filter apparatus 100 includes a controller 140, a plurality of integrators 150 to 154, a plurality of switches 130, 160 to 164, 170 to 174, 180 to 184, and a plurality of voltage/current converters 120 to 123. An inputted current is stored in four pieces of integrators selected among the plurality of integrators 150 to 154 by one clock, and electric charges which have been stored from four preceding clocks up to one preceding clock are added to each other so as to output the added electric charges from the remaining one integrator. When electric charges are stored in the integrators 150 to 154 in each clock, since the inputted current is switched, the electric charges to be outputted can be weighted, and thus, a filter characteristic is changed.
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Inventors:
Kentaro Miyano
Hosokawa Yoshifumi
Abe Katsuaki
Akihiko Matsuoka
Noriaki Saito
Hosokawa Yoshifumi
Abe Katsuaki
Akihiko Matsuoka
Noriaki Saito
Application Number:
JP2008540944A
Publication Date:
January 16, 2013
Filing Date:
October 15, 2007
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H03H19/00; H03M1/12
Domestic Patent References:
| JPH03160814A | 1991-07-10 | |||
| JPH03160814A | 1991-07-10 |
Foreign References:
| WO2007072712A1 | 2007-06-28 | |||
| WO2007072712A1 | 2007-06-28 |
Attorney, Agent or Firm:
Shohei Oguri
Toshimitsu Ichikawa
Kimihide Hashimoto
Toshimitsu Ichikawa
Kimihide Hashimoto