Title:
FREQUENCY CALIBRATION APPARATUS AND METHOD FOR VOLTAGE-CONTROLLED OSCILLATOR, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/133925
Kind Code:
A1
Abstract:
Provided in the present disclosure are a frequency calibration apparatus and method for a voltage-controlled oscillator, and a storage medium. The apparatus comprises: a frequency divider connected to a voltage-controlled oscillator, a time-to-digital converter connected to the frequency divider, and a logic controller connected to the time-to-digital converter, a digital-to-analog converter being connected to the voltage-controlled oscillator. The frequency divider is used to divide a signal generated by the voltage-controlled oscillator into N times to obtain a frequency-division signal, and N is a positive integer. The time-to-digital converter is used to measure an actual time period of the frequency-division signal. The logic controller is used to generate a control voltage according to the difference between the actual time period of the frequency-division signal and a calibration period of the frequency-division signal, and adjust the frequency of the voltage-controlled oscillator according to the control voltage. By using the solution of the present disclosure, a low-complexity lightweight calibration method is used to increase the frequency accuracy of the voltage-controlled oscillator, and implement the model-free self-adaptive frequency calibration of the voltage-controlled oscillator.
Inventors:
QUAN ZHI (CN)
Application Number:
PCT/CN2020/139102
Publication Date:
June 30, 2022
Filing Date:
December 24, 2020
Export Citation:
Assignee:
SHENZHEN ZHONCENT TECH CO LTD (CN)
International Classes:
H03L7/16
Foreign References:
| CN102656804A | 2012-09-05 | |||
| CN105959003A | 2016-09-21 | |||
| US20060145767A1 | 2006-07-06 |
Other References:
HOU, ZHONGSHENG ET AL.: "An Overview of Dynamic-Linearization-Based Data-Driven Control and Applications", IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 64, no. 5, 31 May 2017 (2017-05-31), XP011645476, DOI: 10.1109/TIE.2016.2636126
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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