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Method and mobile terminal for compensating omnidirectional radiation power

A technology for omnidirectional radiation power and mobile terminals, which is applied in the field of omnidirectional radiation power compensation and mobile terminals, can solve problems such as low efficiency, deterioration of mobile terminal omnidirectional radiation power, and antenna spatial impedance mismatch, and achieve high efficiency omnidirectional The effect of radiant power

Active Publication Date: 2011-08-10
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual use of the mobile terminal, when the head, hand or other objects of the human body are close to the antenna, that is, when the head, hand or other objects are close to the antenna of the mobile terminal, the electromagnetic field boundary conditions of the mobile terminal and the antenna will change. Antenna-to-space impedance mismatch, the omnidirectional radiated power of the mobile terminal will deteriorate
[0004] In the prior art, the method of improving the TRP when the head, hand or other objects are close to the antenna of the mobile terminal is generally to improve by trying to change the antenna form. However, due to the constantly changing boundary conditions, it can only be tried blindly, and the efficiency is very low. Moreover, the TRP improvement effect of the mobile terminal is also poor when the head, hand or other objects are close to the mobile terminal antenna.

Method used

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  • Method and mobile terminal for compensating omnidirectional radiation power
  • Method and mobile terminal for compensating omnidirectional radiation power
  • Method and mobile terminal for compensating omnidirectional radiation power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] see figure 1 , is a flowchart of a method for compensating omnidirectional radiation power according to an embodiment of the present invention.

[0030] The method can include:

[0031] Step 101, receiving a return loss signal.

[0032] The return loss signal refers to the reflection signal of part of the transmission signal generated on the transmission line due to port mismatch and the transmission signal is not completely transmitted through the port. In this embodiment, the return loss signal may be received regularly or in real time, or the return loss signal may be triggered to be received when a head, hand or other object is detected approaching, or may be triggered to receive the return loss signal under other conditions. For the specific process of receiving the return loss signal, you can choose to transmit the return loss signal to the detector through a coupler or capacitor on the line between the antenna feed point or the antenna feed point and the antenn...

Embodiment 2

[0042] see figure 2 , is a flow chart of another method for compensating isotropic radiation power according to an embodiment of the present invention.

[0043] In this embodiment, the mobile terminal takes the wireless handheld device of the GSM standard as an example, and the method may include:

[0044] Step 201, receiving a return loss signal at an antenna feed point.

[0045] In this embodiment, the return loss signal at the antenna feed point is received in real time, so as to subsequently adjust and compensate the omnidirectional radiation power of the mobile terminal in real time. This step is similar to step 101 in the foregoing embodiments, and will not be repeated here.

[0046] Step 202: Perform wave detection on the return loss signal to obtain a voltage value of the wave detection signal.

[0047] In this embodiment, the received return loss signal may be detected and amplified in real time by the detector and the operational amplifier to obtain the output si...

Embodiment 3

[0054] see Figure 4, is a flowchart of another method for adjusting omnidirectional radiation power with an adaptive mechanism according to an embodiment of the present invention.

[0055] The method can include:

[0056] Step 401, receiving a return loss signal at an antenna feed point.

[0057] Step 402: Perform wave detection on the return loss signal to obtain a voltage value of the wave detection signal.

[0058] The steps 401 and 402 are similar to the steps 201 and 202 in the foregoing embodiments, and will not be repeated here.

[0059] Step 403, according to the pre-established correspondence between the detection signal voltage and the control voltage of the power amplifier, search for the control voltage value of the power amplifier corresponding to the voltage value of the detection signal obtained through detection.

[0060] In this embodiment, the corresponding relationship between the detection signal voltage and the control voltage of the power amplifier ca...

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Abstract

The embodiment of the invention provides a method and a mobile terminal for compensating omnidirectional radiation power. The method for compensating the omnidirectional radiation power comprises the steps as follows: a return loss signal is received; demodulation is implemented on the return loss signal to obtain the voltage value of a demodulation signal; a transmission power is increased according to the voltage value of the demodulation signal so as to compensate the omnidirectional radiation power. The method and the mobile terminal for compensating the omnidirectional radiation power can be adopted to automatically and effectively adjust the omnidirectional radiation power of the mobile terminal under the condition that a head, hand or other article approach to an antenna of the mobile terminal.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for compensating omnidirectional radiation power and a mobile terminal. Background technique [0002] The omnidirectional radiated power (TRP) refers to the average value of the external radiation power of the transmitter in all directions of the mobile terminal, and is often used to evaluate the wireless radiation performance of the mobile terminal. The stronger the radiation ability, the better the wireless performance of the terminal and the better the connection ability with the network. [0003] In the actual use of the mobile terminal, when the head, hand or other objects of the human body are close to the antenna, that is, when the head, hand or other objects are close to the antenna of the mobile terminal, the electromagnetic field boundary conditions of the mobile terminal and the antenna will change. If the impedance of the antenna does not match ...

Claims

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Application Information

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IPC IPC(8): H04W52/04H04B1/38H04B17/00H04B1/3827
Inventor 喻志刚王爱猛张忠健周华金
Owner HUAWEI DEVICE CO LTD