Title:
CHARGED MAIN FILTER CIRCUIT
Document Type and Number:
Japanese Patent JP2008017220
Kind Code:
A
Abstract:
To provide a new improved charged main filter circuit which can efficiently pass a low-frequency component and has freely variable frequency characteristics.
The charged main filter circuit 100 includes transconductors 102, 104, 106 and 108 converting input voltages into currents and outputting them, and an SINC filter 120 having frequency characteristics of SINC-function, and the charged main filter circuit 100 is characterized in that it generates an impulse response by convolving an impulse response corresponding to a charging time and an impulse response corresponding to weighting of transconductance.
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Inventors:
IIDA YUKIO
Application Number:
JP2006187057A
Publication Date:
January 24, 2008
Filing Date:
July 06, 2006
Export Citation:
Assignee:
SONY CORP
International Classes:
H03H19/00; H03H11/04
Domestic Patent References:
| JP2007189666A | 2007-07-26 | |||
| JP2003510933A | 2003-03-18 |
Other References:
JPN6012023025; Ｓａｍｉ Ｋａｒｖｏｎｅｎ，Ｔｈｏｍａｓ Ｒｉｌｅｙ，Ｊｕｈａ Ｋｏｓｔａｍｏｖａａｒａ: 'ＣＨＡＲＧＥ ＳＡＭＰＬＩＮＧ ＭＩＸＥＲ ＷＩＴＨ DeltaSigma ＱＵＡＮＴＩＺＥＤ ＩＭＰＵＬＳＥ ＲＥ' ＩＥＥＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｓｙｍｐｏｓｉｕｍ ｏｎ Ｃｉｒｃｕｉｔｓ ａｎｄ Ｓｙｓｔｅ ｖｏｌ．１, 2002, ｐ．Ｉ-１２９〜Ｉ-１３１, ＩＥＥＥ
Attorney, Agent or Firm:
Miaki Kametani
Tetsuo Kanamoto
Koji Hagiwara
Tetsuo Kanamoto
Koji Hagiwara