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    • 7. 发明申请
    • VOLTAGE-CONTROLLED OSCILLATORS
    • 电压控制振荡器
    • US20050275476A1
    • 2005-12-15
    • US10709811
    • 2004-05-28
    • John AustinMelissa BeacomCharles Masenas
    • John AustinMelissa BeacomCharles Masenas
    • H03B1/00H03K3/012H03K3/03
    • H03K3/012H03K3/0315
    • A voltage-controlled oscillator (VCO) comprising an odd number of delay stage circuits. Each delay stage circuit operates between supply voltages VDD and VSS (VDD>VSS) and comprises (1) an input node, (2) an output node, (3) an inverting circuit, and (4) an electric discharge path coupling the output node to VSS. The electric discharge path includes a switch circuit and a resistance adjusting circuit electrically coupled in series between the output node and VSS. In response to an input signal rising at the input node, the inverting circuit decreases an output signal at the output node, and the electric discharge path opens to help pull the output signal down faster. In response to an input signal falling at the input node, the inverting circuit increases the output signal at the output node, and the electric discharge path closes to minimize its own effect.
    • 包括奇数个延迟级电路的压控振荡器(VCO)。 每个延迟级电路在电源电压VDD和VSS(VDD> VSS)之间工作,并且包括(1)输入节点,(2)输出节点,(3)反相电路,以及(4)将输出 节点到VSS。 放电路径包括在输出节点和VSS之间串联电耦合的开关电路和电阻调节电路。 响应于在输入节点处上升的输入信号,反相电路减小输出节点处的输出信号,并且放电路径打开以帮助较快地拉出输出信号。 响应于在输入节点处的输入信号,反相电路增加输出节点处的输出信号,并且放电路径关闭以最小化其自身的效果。