Method and device for calibrating frequency synthesizer in communication terminal
US9306680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Jul 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B17/21
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and a device for calibrating frequency synthesizer in communication terminal are provided. The method may include: controlling the communication terminal to transmit a continuous wave signal in a specified channel; controlling a measurement device to measure the continuous wave signal to obtain a measured frequency deviation value of the frequency synthesizer in the communication terminal; calculating a center oscillation frequency point of a reference crystal oscillator of the communication terminal and a frequency calibration step corresponding to the center oscillation frequency point based on the measured frequency deviation value; and storing the center oscillation frequency point and the corresponding frequency calibration step in the communication terminal. The method can reduce frequency calibration cost and time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.