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Mobile communications terminal having driving voltage control apparatus and method thereof

A voltage and voltage level technology, applied in the field of driving voltage control equipment, can solve problems such as efficiency loss, output power interference, rapid battery consumption and short available communication time

Inactive Publication Date: 2010-10-06
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the prior art output power control method, about 3.7V of battery energy is applied to the amplifier via the load switch
Therefore, even in the frequency region where low output power is required, the battery energy itself is used as the driving voltage of the power amplifier, which results in loss of efficiency in power consumption, rapid drain of the battery and shorter available communication time
In addition, higher than required output power interferes with other terminals, thereby degrading the communication quality of other terminals

Method used

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  • Mobile communications terminal having driving voltage control apparatus and method thereof
  • Mobile communications terminal having driving voltage control apparatus and method thereof
  • Mobile communications terminal having driving voltage control apparatus and method thereof

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Embodiment Construction

[0019] Reference will now be made in detail to non-limiting embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0020] The present invention increases the amount of battery time that can be used, and thus increases the amount of communication time available, by detecting changes in the output power output from the power amplifier, and then adjusting the drive voltage applied to the power amplifier at an appropriate level.

[0021] now go to figure 1 , which is a block diagram of a driving voltage control device of a mobile communication terminal according to an embodiment of the present invention. Such as figure 1 As shown, the driving voltage control device includes: a high frequency processing unit 202 , which is used to load the signal output from the controller 200 onto a radio frequency (RF) carrier, and send the signal to a power amplifier 204 . In addition, the power amplifier 204 also receives a voltage signal via the chang...

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Abstract

A mobile communication terminal including a power amplifier configured to amplify a power of a received signal and wirelessly transmit the amplified signal through an antenna, a high power detector configured to determine whether the amplified power of the signal exceeds a particular critical range, a detected voltage level converter configured to convert a voltage corresponding to the output power exceeding the critical range into a voltage having a particular voltage level, and a varied driving voltage output unit configured to vary the converted voltage and apply the varied voltage to the power amplifier.

Description

technical field [0001] The present invention relates to a driving voltage control device and method, and more particularly, to a mobile communication terminal having a driving voltage control device for adjusting transmission power by detecting a change in power output from a power amplifier of the mobile terminal. Background technique [0002] Generally, a mobile communication terminal (ie, user equipment, etc.) includes a power meter having a power level output for each channel. In addition, the power table includes reference power for controlling the maximum output power, and the mobile communication terminal (hereinafter referred to as 'terminal') uses the reference power to control the maximum output power. [0003] However, in the prior art output power control method, about 3.7V of battery energy is applied to the amplifier via a load switch. Therefore, even in the frequency region where low output power is required, the battery energy itself is used as the drive vol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H04B1/04H04B7/005
CPCH03F1/0211H03F3/245H03F2201/3215H03G3/3042
Inventor 吴才炫
Owner LG ELECTRONICS INC