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

IPC: H03L7/18 ,  G01R19/10 ,  G01R23/02 ,  G01R27/28 ,  H03L7/099 ,  G01R19/00 ,  H03L7/183

CPC classification number: G01R19/10 ,  G01R19/0023 ,  G01R23/02 ,  G01R27/28 ,  H03L7/099 ,  H03L7/183

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.