发明名称 |
SUPPLY-REGULATED VCO ARCHITECTURE |
摘要 |
<p>A supply-regulated VCO exhibits reduced or no supply sensitivity peaking. The VCO includes an oscillator whose supply current is regulated to control the oscillating frequency of the oscillator. A VCO input signal controls the supply current so that there is a relationship between the input signal and the oscillator output frequency. Power supply noise that might otherwise affect oscillator operation is shunted from a supply current input lead of the oscillator to ground by a bypass capacitor. In one example, an auxiliary circuit supplies an auxiliary supply current to the oscillator, thereby reducing the amount of supply current a supply regulation control loop circuit must supply. In another example, a supply regulation control loop circuit supplies a control current to a main oscillator, but the bypass capacitor is not coupled to this oscillator but rather is coupled to a slave oscillator that is injection locked to the main oscillator.</p> |
申请公布号 |
WO2012139078(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
WO2012US32647 |
申请日期 |
2012.04.06 |
申请人 |
QUALCOMM INCORPORATED;RAGHUNATHAN, ASHWIN;PEDRALI-NOY, MARZIO;WADHWA, SAMEER |
发明人 |
RAGHUNATHAN, ASHWIN;PEDRALI-NOY, MARZIO;WADHWA, SAMEER |
分类号 |
H03L7/099;H03L7/24 |
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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