发明名称 |
Phase-locked loop structures with enhanced signal stability |
摘要 |
Phase-locked loop structures are provided that facilitate enhanced stability of loop-generated signals. They include an oscillator network, a feedback loop and a controller. The oscillator network generates a loop output signal with a frequency that varies in response to a control voltage and to a frequency-determining parameter, the feedback loop generates the control voltage in response to the loop output signal and a reference signal and the controller increments the frequency-determining parameter to maintain the control voltage within a predetermined control-voltage range. These structures enhance signal stability by facilitating the use of low-gain oscillator structures and they simplify and shorten loop operations because the structures operate in a closed-loop condition at all times.
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申请公布号 |
US2005105661(A1) |
申请公布日期 |
2005.05.19 |
申请号 |
US20030717394 |
申请日期 |
2003.11.18 |
申请人 |
ANALOG DEVICES, INC. |
发明人 |
MILLER RODNEY D.;DINIZ GEORGE F.;STROUD ERNEST T. |
分类号 |
H03L7/099;H03L7/10;H03L7/18;(IPC1-7):H03D3/24 |
主分类号 |
H03L7/099 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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