发明名称 |
Frequency synthesis system with self-calibrated loop stability and bandwidth |
摘要 |
In a frequency synthesis system with self-calibrated loop stability and bandwidth, a detector produces a detection signal based on a difference between an input signal and a feedback signal; a charge pump produces a control signal based on the detection signal; a filter produces a tuning signal and a source current based on the control signal; a bias circuit produces first and second bias signals; a controllable oscillator produces a differential output signal with a selected specific frequency; a differential-to-single converter produces an output signal with the selected specific frequency; a programmable frequency divider produces the feedback signal; a current mirror circuit receives the source current for producing a mirror current; a compensation circuit produces a compensation current based on the mirror current for compensating the variation of the damping factor and the bandwidth-to-reference frequency ratio.
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申请公布号 |
US2011063004(A1) |
申请公布日期 |
2011.03.17 |
申请号 |
US20100923200 |
申请日期 |
2010.09.09 |
申请人 |
SUNPLUS TECHNOLOGY CO., LTD. |
发明人 |
CHEN CHUN-LIANG;HSU HUI-CHUN |
分类号 |
H03L7/06 |
主分类号 |
H03L7/06 |
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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