Carrier frequency calibration method for low-power-consumption radio frequency communication

• Main Authors: LUO GUOCAI, YE GUOJING, WANG FANGLIN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a carrier frequency calibration method for low-power-consumption radio frequency communication, and relates to the technical field of receiver testing. Based on a standard part and a to-be-tested part with the same structure, the first step is that the standard part sends a test radio frequency signal to the to-be-tested part; secondly, calculating frequency deviation of carrier signals of the to-be-tested piece and the standard piece according to a formula (9) and sending the frequency deviation to the standard piece; 3, the standard component judges whether the frequency deviation meets the precision requirement or not, otherwise, the crystal frequency deviation of the to-be-tested piece and the standard component is calculated according to a formula (11), calibration parameters of the crystal oscillation starting circuit tuning capacitor of the to-be-tested piece are obtained according to the frequency deviation of the passive crystal and a load capacitance relation curve and sent t