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Tuning assembly and NFC device

A technology of tuning components and compensation units, which is applied in the direction of electrical components, computer components, and the structural form of radiation elements, and can solve the problems of NFC antenna communication performance degradation and other issues

Active Publication Date: 2021-09-14
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a tuning component and an NFC device to solve the problem that the communication performance of the existing NFC antenna is degraded due to detuning during use

Method used

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  • Tuning assembly and NFC device
  • Tuning assembly and NFC device
  • Tuning assembly and NFC device

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Embodiment Construction

[0042] In order to make the purpose, advantages and features of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in very simplified form and not drawn to scale, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In addition, the structures shown in the drawings are often a part of the actual structure. In particular, each drawing needs to display different emphases, and sometimes uses different scales.

[0043] As used in this specification, the singular forms "a", "an" and "the" include plural objects, the term "or" is usually used in the sense of including "and / or", and the term "several" Usually, the term "at least one" is used in the meaning of "at least one", and the term "at least two" is usually used in the meaning of "two or more". In addi...

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Abstract

The invention provides a tuning assembly and an NFC device. The tuning assembly comprises a control module and a compensation module. The compensation module comprises at least two compensation units; the compensation units are used for being connected to an antenna matching circuit of the NFC device in parallel; and the control module controls the opening and closing states of the at least two compensation units according to a preset logic so as to adjust the impedance of a combination of the antenna matching circuit and the compensation module. According to the configuration, the control module can adjust the impedance of the combination of the antenna matching circuit and the compensation modules in real time by controlling the opening and closing states of the at least two compensation modules, so that antenna detuning caused by various reasons can be compensated, and the communication performance of the NFC device is ensured.

Description

technical field [0001] The invention relates to the technical field of near field communication, in particular to a tuning component and an NFC device. Background technique [0002] In existing NFC products, the impedance of the antenna matching part of the circuit has been determined after the list of components (BOM) is frozen, and the circuit impedance value cannot be changed by other means. In an ideal environment, both components and antennas maintain stable parameters, and the antenna matching circuit only needs to be debugged once during the design process to work stably and efficiently. But in practice, the antenna matching circuit is often detuned, and the detuning of the antenna matching circuit may lead to a reduction in product performance, such as a reduction in communication distance, performance degradation, or failure to communicate. Common causes of detuning are as follows: [0003] 1) The antenna parameters change with the influence of the environment. Th...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q3/26G06K7/10
CPCH01Q1/38H01Q3/26G06K7/10297G06K7/10316
Inventor 王苗邹素瑞
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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