发明申请
- 专利标题: NOISE REDUCTION CIRCUIT FOR CANCELING LEAKAGE SIGNAL
- 专利标题(中): 消除噪声信号的噪声减少电路
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申请号: US12295480申请日: 2007-03-28
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公开(公告)号: US20090174476A1公开(公告)日: 2009-07-09
- 发明人: Naoki Komatsu , Hideki Iwaki , Toru Yamada
- 申请人: Naoki Komatsu , Hideki Iwaki , Toru Yamada
- 优先权: JP2006-098811 20060331
- 国际申请: PCT/JP2007/056545 WO 20070328
- 主分类号: H03F1/30
- IPC分类号: H03F1/30
摘要:
In a noise reduction circuit, a transistor circuit amplifies an input signal and outputs an output signal with supply of power from the DC voltage source via a power supply line circuit. The canceling signal adding circuit acquires and attenuates a part of the output signal, to generate a canceling signal having a phase substantially opposite to a phase of a leakage signal leaking to the power supply line circuit, and having an amplitude substantially the same as an amplitude of the leakage signal.
公开/授权文献
- US08290451B2 Noise reduction circuit for canceling leakage signal 公开/授权日:2012-10-16