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Radio frequency system temperature compensation method, device and mobile terminal

A temperature compensation device and temperature compensation technology, applied in the control/regulation system, regulating electrical variables, instruments, etc., can solve the problems of many tests, low efficiency, and terminal transmit power drop, and achieve the effect of improving efficiency and accuracy

Active Publication Date: 2017-01-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

For example, as the temperature rises, the gain of the power amplifier decreases, resulting in a decrease in the transmit power of the terminal, so the power amplifier must be compensated to compensate for the loss caused by the decrease in the gain of the power amplifier
[0004] However, the existing temperature compensation method needs to perform multiple tests and compensation for different terminals, the number of tests is large, and the efficiency is low

Method used

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  • Radio frequency system temperature compensation method, device and mobile terminal
  • Radio frequency system temperature compensation method, device and mobile terminal
  • Radio frequency system temperature compensation method, device and mobile terminal

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Embodiment Construction

[0021] In order to solve the influence of temperature on the function of radio frequency components, it is necessary to carry out temperature-related compensation measures for radio frequency components. The existing temperature compensation method of the power amplifier is: after the terminal product is ready, test the transmission power of the terminal at different temperatures, compare it with the transmission power of the terminal at normal temperature, and adjust the power amplifier according to the difference between the two. compensate. For example, as the temperature rises, the gain of the power amplifier decreases, resulting in a decrease in the transmit power of the terminal. In this way, the power amplifier must be compensated to compensate for the loss caused by the decrease in the gain of the power amplifier. However, the existing temperature compensation method needs to perform multiple tests and compensation for different terminals, the number of tests is large,...

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Abstract

Provided is a temperature compensating method and device for a radio frequency system and a mobile terminal. The temperature compensating method comprises following steps: acquiring current temperature value of a power amplifier; and acquiring power attenuation value corresponding to current temperature value in a pre-set mapping table. The pre-set mapping table is characterized in that power attenuation values correspond to the power amplifier at different temperature; and power attenuation value corresponding to current temperature value is adopted for temperature compensation of the power amplifier. By adoption of the method, device and the mobile terminal, efficiency of temperature compensation can be effectively increased.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method, device and mobile terminal for temperature compensation of a radio frequency system. Background technique [0002] In RF systems, RF components are susceptible to temperature. For example, a power amplifier, at different temperatures, the output power of the power amplifier will change greatly, thus affecting the performance of the entire radio frequency system. [0003] In order to solve the influence of temperature on the function of radio frequency components, it is necessary to carry out temperature-related compensation measures for radio frequency components. The existing temperature compensation method of the power amplifier is: after the terminal product is ready, test the transmission power of the terminal at different temperatures, compare it with the transmission power of the terminal at normal temperature, and adjust the power amplifier according to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/56
Inventor 吉德成
Owner SPREADTRUM COMM (SHANGHAI) CO LTD