Impedance adjusting method, radio frequency circuit, communication equipment and computer equipment

A technology of impedance adjustment and communication equipment, applied in the field of radio frequency, can solve problems affecting communication quality, high current noise, etc., to ensure communication quality, reduce current noise, and achieve simple effects

Active Publication Date: 2022-01-11
REALME MOBILE TELECOMM SHENZHEN CO LTD
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AI Technical Summary

Problems solved by technology

[0003] When the radio frequency circuit works in some frequency bands that require higher transmission power, the output current of the power amplifier (Power Amplifier, PA) in the radio frequency circuit will be relatively large, which will cause large current noise during communication. If the power is directly reduced Amplifier output power to improve current noise may affect communication quality

Method used

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  • Impedance adjusting method, radio frequency circuit, communication equipment and computer equipment
  • Impedance adjusting method, radio frequency circuit, communication equipment and computer equipment
  • Impedance adjusting method, radio frequency circuit, communication equipment and computer equipment

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Embodiment Construction

[0041] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0043] It can be understood that the terms "first", "second", etc. used in this application may be used t...

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Abstract

The invention relates to an impedance adjusting method, a radio frequency circuit, communication equipment and computer equipment. The impedance adjusting method is applied to the communication equipment. The method comprises the following steps: carrying out load traction on a power amplifier in the communication equipment to obtain a first mapping relation between an impedance value of an antenna matching circuit and an output current of the power amplifier and a second mapping relation between the impedance value and an output power of the power amplifier; determining an impedance value interval corresponding to the preset power interval according to the second mapping relation; determining a selectable impedance point according to the impedance value interval and a first mapping relation, wherein the impedance value of the optional impedance point is within the impedance value interval, and the output current corresponding to the impedance value is smaller than the current threshold value; the current threshold value is a corresponding current value when a noise value generated when the power amplifier works in the preset power interval is greater than or equal to the noise threshold value. The current noise generated by the power amplifier can be reduced on the premise of ensuring the communication quality.

Description

technical field [0001] The present application relates to the field of radio frequency technology, in particular to an impedance adjustment method, a radio frequency circuit, communication equipment and computer equipment. Background technique [0002] With the continuous development of radio frequency technology, communication equipment has higher and higher requirements for the quality of transmitted signals, which brings great challenges to the design of radio frequency circuits. [0003] When the radio frequency circuit works in some frequency bands that require higher transmission power, the output current of the power amplifier (Power Amplifier, PA) in the radio frequency circuit will be relatively large, which will cause large current noise during communication. If the power is directly reduced Amplifier output power to improve current noise may affect communication quality. Contents of the invention [0004] Embodiments of the present application provide an impeda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/04
CPCH04B1/04H04B1/0475H04B2001/0408Y02D30/70
Inventor 吴恩
Owner REALME MOBILE TELECOMM SHENZHEN CO LTD
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