发明授权
- 专利标题: Low-noise fine-frequency tuning
- 专利标题(中): 低噪声微调频率
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申请号: US11242230申请日: 2005-10-03
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公开(公告)号: US07375597B2公开(公告)日: 2008-05-20
- 发明人: Jody Greenberg , Sehat Sutardja
- 申请人: Jody Greenberg , Sehat Sutardja
- 申请人地址: BB
- 专利权人: Marvell World Trade Ltd.
- 当前专利权人: Marvell World Trade Ltd.
- 当前专利权人地址: BB
- 主分类号: H03B1/00
- IPC分类号: H03B1/00
摘要:
Circuits, methods, apparatus, and code that provide low-noise and high-resolution electronic circuit tuning. An exemplary embodiment of the present invention adjusts a capacitance value by pulse-width modulating a control voltage for a switch in series with a capacitor. The pulse-width-modulated control signal can be adjusted using entry values found in a lookup table, by using analog or digital control signals, or by using other appropriate methods. The capacitance value tunes a frequency response or characteristic of an electronic circuit. The response can be made to be insensitive to conditions such as temperature, power supply voltage, or processing.
公开/授权文献
- US20070024379A1 Low-noise fine-frequency tuning 公开/授权日:2007-02-01