A wireless communication frequency calibration method, device and equipment
A wireless communication and communication frequency technology, applied in receiver monitoring, electrical components, transmitter monitoring, etc., can solve the problems of prolonging production cycle, wasting time, wasting production resources, etc., to reduce frequency deviation, ensure communication performance, To achieve the effect of calibration
Active Publication Date: 2021-07-20
深圳昂瑞微电子技术有限公司
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Problems solved by technology
However, the secondary test of the crystal oscillator not only causes waste of time and prolongs the production cycle, but also causes waste of production resources due to the screening of bad crystal oscillators, resulting in high production costs
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[0064] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0065] In this embodiment of the present application, the frequency offset specifically refers to a communication frequency point difference between the sender and the receiver. The sender and receiver refer to two terminal devices for communication respectively. Due to the difference in the performance of the crystal oscillator in the wireless communication chip,...
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The embodiment of the present invention discloses a communication frequency calibration method, device and equipment for a wireless communication chip, wherein the wireless communication chip includes: a crystal oscillator and an adjustable capacitor; the adjustable capacitor is used to adjust the oscillation frequency of the crystal oscillator; the method includes : According to the preset calibration rules, the capacitance value of the adjustable capacitor is adjusted multiple times, so that the transmission frequency of the wireless communication chip changes within the preset frequency range; after each adjustment, the wireless communication chip is controlled to send a calibration command to the receiver; According to the receiver's response to each calibration instruction, the calibration capacity of the adjustable capacitor is determined to calibrate the communication frequency of the wireless communication chip. According to the receiver's response to each calibration command, the calibration capacity of the adjustable capacitor can be determined, the oscillation frequency of the crystal oscillator in the wireless communication chip can be set, the frequency deviation between the sender and the receiver can be reduced, and wireless communication can be realized. The calibration of the chip ensures the communication performance of the sender and receiver.
Description
[0001] This application claims the priority of the Chinese patent application with the application number 201810146862.3 and the title of the invention "a wireless communication frequency calibration method, device and equipment" submitted to the China Patent Office on February 12, 2018, the entire contents of which are incorporated by reference in this application. technical field [0002] The present application relates to the technical field of wireless communication, and in particular to a method, device and equipment for wireless communication frequency calibration. Background technique [0003] Crystal oscillators, also known as crystal resonators, are made of quartz crystals that are precisely cut and ground, coated with electrodes and welded with leads. Their oscillation frequency is closely related to their shape, material, cutting direction, etc., and are generally used as signal generating devices. in wireless communication chips. [0004] Crystal oscillators are...
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IPC IPC(8): H04B17/11H04B17/21H04B1/408
CPCH04B1/408H04B17/11H04B17/21
Inventor 李殿君刘成杨亮孟震一钱永学
Owner 深圳昂瑞微电子技术有限公司