Unlock instant, AI-driven research and patent intelligence for your innovation.

Mobile communication terminal with adjustable driving voltage of power amplifier and control method thereof

A technology of mobile communication terminal and power amplifier, which is applied in the direction of telephone communication, improving amplifier to improve efficiency, electrical components, etc., to achieve the effect of reducing heat and increasing efficiency

Inactive Publication Date: 2008-07-02
LG ELECTRONICS (CHINA) R&D CENT CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in conventional PAM-driven mobile communication terminals, as the output power level of PAM, the power mode can only be selected and controlled through two operation modes, the high power mode and the low power mode, so that it cannot correspond to the transmission power level. Variable control and driving of PAM with optimum voltage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mobile communication terminal with adjustable driving voltage of power amplifier and control method thereof
  • Mobile communication terminal with adjustable driving voltage of power amplifier and control method thereof
  • Mobile communication terminal with adjustable driving voltage of power amplifier and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Advantageous embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] image 3 It is a structural block diagram of a mobile communication terminal with a variable PAM driving voltage function and a control method in the present invention; FIG. 4 is a graph showing the improvement rate of power consumption in the present invention.

[0031] As shown in the figure, the present invention includes: a battery 110 , a DC / DC converter 120 , a PAM 130 , a duplexer 140 , an RFT 150 and an MSM 160 .

[0032] The above-mentioned MSM (Mobile Station Modem-mobile terminal modem) 160 has a central processing function similar to the CPU (Central Processing Unit-central processing unit) of the computer, and plays the most critical important role in the portable terminal; the above-mentioned duplexer 100 Then communicate with the base station through the antenna.

[0033] In order to drive the PAM 130 with an optimum driving vo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a mobile communication terminal having a function for varying a PAM driving voltage and a method for controlling the same. The terminal comprises: MSM and a DC / DC converter. The MSM linearly subdivides an output power level of a PAM to set an available driving voltage to the sub-divided output power level. The MSM sets a PDM signal value one-to-one corresponding to a TxAGC table value. The MSM outputs a transmission controlling signal to an FRT based on the TxAGC table. The DC / DC converter provides a driving voltage of cell to PAM by control of PWM, and drives the PAM through the optimal voltage by varying an output voltage by a variable controlling signal of the MSM. The invention can efficiency of PAM and reduce the consumptive power, therefore the use time of cell is increased.

Description

technical field [0001] The present invention relates to a mobile communication terminal and a control method having a PAM driving voltage variable function, and more specifically, to driving a PAM using a DC / DC converter as the driving voltage (Vcc) of a PAM (Power Amplifier Module-power amplifier) A mobile communication terminal with variable voltage function and a control method thereof. Background technique [0002] figure 1 It is a structural block diagram of the main part of the mobile communication terminal in the PAM driving voltage mode in the prior art; figure 2 It is the picture of the Tx AGC table of RAS RAM. [0003] As shown in the figure, in the mobile communication terminal of the PAM driving voltage method in the prior art, a load switch (Load Switch) 20 is used to add the voltage of the battery 10 to the PAM 30 as the driving voltage Vcc of the PAM 30 . [0004] As shown above, the driving voltage supply method of the above-mentioned PAM will use the two...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40H03F1/02
CPCH04B1/40H04M1/725H04M2201/26
Inventor 朴振洙
Owner LG ELECTRONICS (CHINA) R&D CENT CO LTD