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Radio frequency circuit and adjustment method

A technology of radio frequency circuit and radio frequency current, applied in the field of radio frequency, can solve the problem of poor performance of antenna OTA test

Active Publication Date: 2021-08-10
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem in the related art that the maximum output power point of the PA is not at 50ohm of the Smith chart, when the antenna is debugged with 50ohm as the reference point, the antenna efficiency is high but the OTA test performance of the antenna is poor, the embodiment of the present disclosure A radio frequency circuit and an adjustment method are provided

Method used

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  • Radio frequency circuit and adjustment method

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Embodiment Construction

[0040] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0041] Please refer to figure 1 , which shows a schematic diagram of a radio frequency circuit provided by an embodiment of the present disclosure, the radio frequency circuit includes: a PA 110 , a radio frequency test socket 120 , a phase shifter 130 , an antenna test socket 140 and an antenna body 150 .

[0042] PA 110 is an electronic device for amplifying (high frequency) radio f...

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Abstract

The disclosure discloses a radio frequency circuit and an adjustment method, which belong to the field of radio frequency technology. The radio frequency circuit includes: PA, radio frequency test seat, phase shifter, antenna test seat and antenna body; the radio frequency test seat is electrically connected with the radio frequency current output terminal of PA, and is used for testing the radio frequency current output by PA; antenna test The base is electrically connected with the RF current input terminal of the antenna body, and is used to test the radiation performance of the antenna body; the phase shifter is arranged between the RF test base and the antenna test base, and is electrically connected to the RF test base and the antenna test base respectively. connected to adjust the phase of the radio frequency current output by the PA; the antenna body is used to radiate radio frequency signals according to the phase adjusted radio frequency current. The embodiment of the present disclosure realizes matching the antenna with the maximum power point of the PA, thereby ensuring that the antenna efficiency and the OTA test performance both reach a higher level.

Description

technical field [0001] The present disclosure relates to the field of radio frequency technology, in particular to a radio frequency circuit and an adjustment method. Background technique [0002] PA (Power Amplifier, power amplifier), as an important component in an RF (Radio Frequency, radio frequency) system, is used to provide an amplified radio frequency current to an antenna, and the antenna radiates radio frequency signals according to the radio frequency current. [0003] In order to achieve the maximum output power of the PA, developers need to perform impedance matching on the PA and the antenna through load-pull technology in advance. Since the internal resistance and working performance of the PA will change under high-power working conditions, the maximum output power point of the PA is often not at 50ohm on the Smith Chart, which leads to the fact that when debugging the antenna with 50ohm as the reference point, The antenna efficiency is high, but the OTA (Ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R29/08G01R29/10
CPCG01R29/0871G01R29/10
Inventor 熊晓峰
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD