公开(公告)号：US20160336945A1

公开(公告)日：2016-11-17

申请号：US14709712

申请日：2015-05-12

Applicant: Intel Corporation

Inventor： Fang-Ren LIAO ,  Shih-An YU

IPC: H03L7/24

CPC classification number: H03L7/24 ,  H03B5/1265 ,  H03B2200/005 ,  H03B2201/011 ,  H03B2201/025 ,  H03L7/099

Abstract: A frequency calibration method for calibrating an output frequency of a voltage-controlled oscillator is provided. The voltage-controlled oscillator includes a first capacitor bank, a second capacitor bank, and a third capacitor bank. The first capacitor bank and the third capacitor bank are initially disabled and the second capacitor bank is initially enabled. The method includes, when the initial output frequency is lower than a reference frequency, adjusting the capacitance of the second capacitor bank until the calibrated output frequency is greater than the reference frequency, and when the initial output frequency is greater than the reference frequency, enabling the first capacitor bank and gradually increasing the capacitance of the first capacitor bank until the calibrated output frequency is lower than the reference frequency.

Abstract translation: 提供用于校准压控振荡器的输出频率的频率校准方法。 压控振荡器包括第一电容器组，第二电容器组和第三电容器组。 初始禁止第一电容器组和第三电容器组，并且初始使能第二电容器组。 该方法包括：当初始输出频率低于参考频率时，调整第二电容器组的电容，直到校准输出频率大于参考频率，并且当初始输出频率大于参考频率时，使能 第一电容器组并逐渐增加第一电容器组的电容，直到校准的输出频率低于参考频率。