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公开(公告)号：US09294104B2
公开(公告)日：2016-03-22
申请号：US14332614
申请日：2014-07-16
Applicant: Intel Corporation
Inventor： Shih-An Yu , Sen-You Liu , Fang-Ren Liao , Yi-Pei Su
CPC classification number: H03B5/32 , H02M3/07 , H03C3/0933 , H03L7/087 , H03L7/0893 , H03L7/18 , H03L7/1972 , H03L7/1976
Abstract: A phase-locked loop circuit includes a phase detector, a charge pump, a capacitor, and a capacitor multiplier. The phase detector receives a reference frequency and a feedback frequency to generate a up/down signal. The charge pump, which includes a positive node and a negative node, receives the up/down signal to generate a first current. The capacitor is coupled to the negative node. The capacitor multiplier, coupled to the negative node, generates a second current which is the first current divided by a first scaling number.
Abstract translation: 锁相环电路包括相位检测器，电荷泵，电容器和电容器倍增器。 相位检测器接收参考频率和反馈频率以产生上/下信号。 包括正节点和负节点的电荷泵接收上/下信号以产生第一电流。 电容器耦合到负节点。 耦合到负节点的电容器倍增器产生第二电流，其是第一电流除以第一缩放数。
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公开(公告)号：US09784770B2
公开(公告)日：2017-10-10
申请号：US14287569
申请日：2014-05-27
Applicant: Intel Corporation
Inventor： Shih-An Yu , Yu-Hong Lin , Sen-You Liu , Fang-Ren Liao
Abstract: A voltage-controlled oscillator gain measurement system includes a voltage-controlled oscillator, a voltage detector, and a processor. The voltage-controlled oscillator, which is configured in a phase-locked loop circuit, generates an output signal with an output frequency according to a control signal. The control signal is generated according to the output signal divided by a scaling number. The voltage detector is configured to measure a voltage difference of the control signal. The processor adjusts the scaling number to generate an output frequency difference of the output signal, and obtains a reciprocal gain of the voltage-controlled oscillator by dividing the voltage difference by the output frequency difference.
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