WO2013034044A1

WO2013034044A1 - Wcdma mobile terminal power calibration method and calibration system

Info

Publication number: WO2013034044A1
Application number: PCT/CN2012/080052
Authority: WO
Inventors: 王柯; 白剑
Original assignee: 惠州Tcl移动通信有限公司
Priority date: 2011-09-06
Filing date: 2012-08-13
Publication date: 2013-03-14
Also published as: CN102300226B; CN102300226A

Abstract

Disclosed are a WCDMA mobile terminal power calibration method and a calibration system. The method includes: A, controlling a mobile terminal to enter a calibration mode with a computer; B, controlling the mobile terminal to enter a first working frequency band with the computer; C, controlling a base station emulator to enter a test mode with the computer; D, setting the radio frequency signal line losses of a plurality of frequency bands of the mobile terminal simultaneously; E, making the mobile terminal enter an intermediate channel, and a radio frequency amplifier sequentially entering into a high gain mode, a medium gain mode and a low gain mode, and scanning the output power of the mobile terminal and the power at an antenna port of the mobile terminal; F, calibrating the output power difference between the intermediate channel and the other channels within the first working frequency band of the mobile terminal; G, calibrating power detection circuits of the intermediate channel and the other channels under the maximum transmission power of the mobile terminal, and reading the difference; and H, modifying the working frequency band, and repeating steps B to G until the completion of the calibration of all working frequency bands supported by the mobile terminal.

Description

WCDMA mobile terminal power calibration method and calibration system

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a method and a calibration system for power calibration of a WCDMA mobile terminal.

Background technique

At present, mobile terminals support more and more frequency bands, and they are moving toward small, smart, light and thin, which brings more challenges to antenna design. At the same time, in order to improve the user experience and increase network capacity and efficiency, operators and users have higher and higher requirements for the performance of mobile terminal antennas. Under the pinch of the above two requirements, the antenna design of the mobile terminal is increasingly difficult.

Please refer to Figure 1, which is WCDMA (Wideband Code Division). M, wideband code division multiple access, is a passive S11 diagram of the antenna of a third generation wireless communication technology mobile terminal. It can be clearly seen from the figure that the performance of different channel antennas is different in the same frequency band.

WCDMA Band For example, the I-band is the main channel of the low channel CH9613 is 1922.6MHz, and the high channel CH9887 is 1977.4MHz. If the conduction power is set the same, On The Total Radiated in Air (OTA, Radiated Antenna Performance) Power (TRP, total radiant power) must be high or low. In order to ensure that all channels reach the standard, the channel with better antenna performance (such as the CH9887 channel in Figure 1) is bound to be relatively high. This is for the specificity of the high channel CH9887 Absorption Rate (SAR, absorption ratio) and Hearing Aids Compatibility (HAC, hearing aid compatibility) are a challenge.

At present, the total radiated power of different channels is forcibly flattened by requiring the antenna to adjust the antenna model and antenna matching. However, this method will enhance the difficulty of antenna debugging. If the power of the calibration target can be set to be different, so as to ensure the same total radiated power value of different channels, it will greatly help the antenna development. However, some mobile terminal platforms, such as the Qualcomm platform, do not provide such functionality. That is to say, the target power of different channels in the same frequency band must be set to the same value, which is not convenient for debugging of the antenna.

Summary of the invention

In view of the above deficiencies of the prior art, an object of the present invention is to provide a method and a calibration system for power calibration of a WCDMA mobile terminal, which can implement different target powers for different channels to facilitate antenna debugging.

In order to achieve the above object, the present invention adopts the following technical solutions:

A method for implementing power calibration of a WCDMA mobile terminal using a calibration system, the calibration system comprising a computer and a base station emulator, the computer being coupled to a base station emulator; and at the time of calibration, the WCDMA mobile terminal and the computer and base station emulator, respectively Connecting, wherein the method comprises:

A. The computer controls the WCDMA mobile terminal to enter the calibration mode;

B. The computer controls the WCDMA mobile terminal to enter the first working frequency band;

C. The computer controlled base station emulator enters the test mode;

D. Using the line loss table setting method to simultaneously set the RF signal line loss of multiple frequency segments of the WCDMA mobile terminal;

E. The WCDMA mobile terminal enters the intermediate channel, and the radio frequency amplifier first enters the high gain mode, scans the output power of the WCDMA mobile terminal and the power of the WCDMA mobile terminal antenna port, and stores the power data; then the radio frequency amplifier enters the medium gain mode, and scans the WCDMA. The output power of the mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and storing the power data; finally, the radio frequency amplifier enters the low gain mode to scan the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and store the power data;

F. calibrating the difference between the output power of the other channels and the output power of the intermediate channel of the WCDMA mobile terminal in the first working frequency band;

G. calibrating the power detection circuit of the intermediate channel and other channels under the maximum transmit power of the WCDMA mobile terminal, and reading the difference;

H. Modify the working frequency band and repeat steps B to G until all the working frequency bands supported by the WCDMA mobile terminal are calibrated.

The method for implementing power calibration of a WCDMA mobile terminal using a calibration system according to claim 1, wherein after the step H, the method further comprises:

I. Store all the RF parameters obtained by calibration into the WCDMA mobile terminal and exit the calibration.

The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system, where the step F specifically includes:

In the high gain mode, when the WCDMA mobile terminal outputs the same power, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power;

In the medium gain mode, when the WCDMA mobile terminal outputs the same power, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power;

In the low gain mode, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power on the other channels and the intermediate channel of the WCDMA mobile terminal.

The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system, wherein the first working frequency band is a WCDMA Band I band.

The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system, wherein the frequency of the first working frequency band is 1920 MHz-1980 MHz, and the line loss of the 1920-1940 MHz band is set to XdB by using a line loss table setting method, and the 1940- The line loss of the 1960MHz band is set to YdB, and the line loss of the 1960MHz-1980MHz band is set to ZdB, and X=Y-0.5, Z=Y+1.

The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system, wherein the base station emulator adopts a base station emulator of the model CMU200 or Agilent 8960.

A calibration system for WCDMA mobile terminal power calibration, comprising a computer and a base station emulator, wherein the computer is connected to a base station emulator; and during calibration, the WCDMA mobile terminal is respectively connected to a computer and a base station emulator; wherein The computer includes:

a first control module for controlling a WCDMA mobile terminal to enter a calibration mode;

a second control module for controlling a WCDMA mobile terminal to enter a first working frequency band;

a third control module for controlling the base station emulator to enter the test mode;

a first setting module for simultaneously setting a radio frequency signal line loss of a plurality of frequency segments of a WCDMA mobile terminal by using a line loss table setting method;

For the WCDMA mobile terminal to enter the intermediate channel, the radio frequency amplifier first enters a high gain mode, scans the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port; then the radio frequency amplifier enters the medium gain mode, and scans the output power of the WCDMA mobile terminal. And the power at the WCDMA mobile terminal antenna port; finally the radio frequency amplifier enters a low gain mode to scan the output power of the WCDMA mobile terminal and the power module at the WCDMA mobile terminal antenna port;

a first calibration module for calibrating a difference between an output power of another channel and an intermediate channel output power of the WCDMA mobile terminal in the first working frequency band;

a second calibration module for calibrating the power detection circuit of the intermediate channel and other channels and reading the difference under the maximum transmit power of the WCDMA mobile terminal;

A second setting module for modifying a working frequency band of a WCDMA mobile terminal.

The calibration system, wherein the WCDMA mobile terminal comprises: a storage module for storing power data and all calibrated RF parameters.

Compared with the prior art, the method and calibration system for power calibration of a WCDMA mobile terminal provided by the present invention firstly enters a calibration mode by a computer controlled WCDMA mobile terminal; then, the computer controls the WCDMA mobile terminal to enter a first working frequency band; and the computer controls the base station by a computer. The emulator enters the test mode; then the line loss table setting method is used to simultaneously set the RF signal line loss of multiple frequency segments of the WCDMA mobile terminal; so that the WCDMA mobile terminal enters the intermediate channel, the radio frequency amplifier first enters the high gain mode, and scans the WCDMA mobile terminal. Output power and power at the WCDMA mobile terminal antenna port, and store power data; then the RF amplifier enters the medium gain mode, scans the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port, and stores the power data; finally the RF amplifier Entering a low gain mode to scan the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port, and storing the power data; and then calibrating the output power of the other channels and the intermediate channel output power of the WCDMA mobile terminal in the first working frequency band Value; after modifying the working frequency band, repeat steps B to G until all the working frequency bands supported by the WCDMA mobile terminal are calibrated, so that it is convenient to complete the functions of different channels of different frequencies in the same frequency band of the WCDMA mobile terminal, thereby facilitating WCDMA mobile Terminal antenna debugging.

DRAWINGS

1 is a passive S11 diagram of an antenna provided by the background art.

FIG. 2 is a schematic structural diagram of a calibration system according to an embodiment of the present invention.

3 is a flow chart of a method for implementing power calibration of a WCDMA mobile terminal using a calibration system according to the present invention.

detailed description

The present invention provides a method and a calibration system for power calibration of a WCDMA mobile terminal. In order to make the objects, technical solutions and effects of the present invention clearer and more clear, the present invention will be further described in detail below with reference to the accompanying drawings. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to FIG. 2, a calibration system provided by an embodiment of the present invention includes a computer and a base station emulator, and the computer is connected to a base station emulator. At the time of calibration, the WCDMA mobile terminals are respectively connected to a computer and a base station emulator.

In a specific implementation, the WCDMA mobile terminal and the computer can be connected through a serial port or a USB port, and the calibration software running on the computer controls the WCDMA mobile terminal through the interface. The computer passes GPIB (General-Purpose Interface The Bus (Common Interface Bus) interface is connected to the base station emulator, and controls the base station emulator and reads the data measured by the base station emulator through the interface. In this embodiment, the base station emulator uses a base station emulator of the type CMU200 or Agilent 8960.

Please refer to FIG. 3 , which is a flowchart of a method for implementing power calibration of a WCDMA mobile terminal by using a calibration system, and the method for implementing power calibration of a WCDMA mobile terminal by using a calibration system includes:

S110. The WCDMA mobile terminal controlled by the computer enters a calibration mode.

S120. The WCDMA mobile terminal controlled by the computer enters the first working frequency band;

S130. The computer controlled base station emulator enters a test mode.

S140, using a line loss table setting method to simultaneously set a radio frequency signal line loss of multiple frequency segments of the WCDMA mobile terminal;

S150. The WCDMA mobile terminal enters the intermediate channel, and the radio frequency amplifier first enters a high gain mode, scans the output power of the WCDMA mobile terminal and the power of the WCDMA mobile terminal antenna port, and stores the power data; then the radio frequency amplifier enters the medium gain mode, and scans the WCDMA. The output power of the mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and storing the power data; finally, the radio frequency amplifier enters the low gain mode to scan the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and store the power data;

S160. Calibrate a difference between an output power of the other channel and an output power of the intermediate channel in the first working frequency band of the WCDMA mobile terminal.

S170. Calibrate the power detection circuit of the intermediate channel and other channels under the maximum transmit power of the WCDMA mobile terminal, and read the difference;

S180. Modify the working frequency band, and repeat steps S120 to S170 until all working frequency bands supported by the WCDMA mobile terminal are calibrated.

Wherein, after step S180, the method further includes:

S190. Store all the RF parameters obtained by the calibration into the WCDMA mobile terminal, and exit the calibration.

In the step S160, the WCDMA mobile terminal and the base station emulator need to be configured with the same channel, so that the WCDMA mobile terminal and the base station emulator can communicate normally. The step S160 specifically includes:

In the embodiment of the present invention, the first working frequency band is a WCDMA Band In the I frequency band, the frequency of the first working frequency band is 1920 MHz-1980 MHz, which is divided into a frequency band of 1920-1940 MHz, a frequency band of 1940-1960 MHz, and a frequency band of 1960 MHz-1980 MHz. In this embodiment, the line loss is set to XdB in the 1920-1940MHz band, the line loss in the band 1940-1960MHz is set to YdB, and the line loss in the 1960MHz-1980MHz band is set to ZdB, and X=Y-0.5, Z=Y+1.

When the base station emulator uses an emulator of the type CMU200, the computer uses the following two GPIB command settings:

CONFigure:USER:CORRection:LOSS:TABLe:ENABle : Enable line loss table setting mode;

CONFigure:USER:CORRection:LOSS:TABLe:LINE<nr> : Set the line loss table;

Of course, similar commands can be used for base station emulators or other base station emulators of the Agilent 8960.

The following uses the band calibration system of the WCDMA mobile terminal of the Qualcomm platform as an application embodiment, and details the method for implementing the power calibration of the WCDMA mobile terminal by using the calibration system of the present invention:

For example, the WCDMA Band I of the WCDMA mobile terminal is required to have a transmission power of 23.5 dBm at CH9613 (primary frequency 1922.6 MHz), a transmission power of intermediate channel CH9750 (main frequency 1950 MHz) of 23 dBm, and a transmission power of the highest channel CH9887 (main frequency 1977.4 MHz). 22dBm. To achieve this goal, the following operation assumes that the actual RF cable line loss in the calibration system is LOSS _standard dB, the terminal target power has been set to 23 dB by the software, and then the following steps are performed by the computer:

The first step is to control the WCDMA mobile terminal to enter the calibration mode by the computer;

In the second step, the computer controls the WCDMA mobile terminal to enter the first working frequency band;

In the third step, the computer controlled base station emulator enters the test mode;

The fourth step uses the line loss table setting method to simultaneously set the RF signal line loss of multiple frequency segments of the WCDMA mobile terminal;

For example, WCDMA BAND I can be transmitted in the 1920MHz-1980MHz range. The line loss table setting method can be used to set the line loss of 1920-1940MHz to (LOSS _standard -0.5)dB, and the line loss of 1940-1960MHz is set to LOSS _standard. dB, 1960MHz-1980MHz frequency band line loss is set to (LOSS _standard +1) dB.

Specific to the CMU200, the calibration software uses the following two GPIB command settings:

CONFigure:USER:CORRection:LOSS:TABLe:ENABle

CONFigure:USER:CORRection:LOSS:TABLe:LINE<1920, (LOSS _standard -0.5),1940,LOSS _standard ,1960,(LOSS _standard +1)>

In the fifth step, the WCDMA mobile terminal enters the intermediate channel, and the radio frequency amplifier first enters the high gain mode, scans the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and stores the power data; after that, the radio frequency amplifier enters the medium gain mode. Scanning the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and storing the power data; finally, the radio frequency amplifier enters the low gain mode to scan the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and store the power data. ;

The sixth step is to calibrate the difference between the output power of the other channels and the output power of the intermediate channel of the WCDMA mobile terminal in the first working frequency band;

Step 7: calibrate the power detection circuit of the intermediate channel and other channels under the maximum transmit power of the WCDMA mobile terminal, and read the difference;

In the eighth step, all the RF parameters obtained by the calibration are stored in the WCDMA mobile terminal, and the calibration is exited.

It can be seen that in the sixth and seventh steps, in the WCDMA Band I band, since the line loss is 0.5 dB lower than the standard line loss in the channel CH9613, in order for the base station emulator to read the output power of 23 dBm, the WCDMA mobile terminal must Transmit 23.5dBm of power. Because the measured power value reported by the base station emulator to the calibration system is: P _measured = P _real + CableLoss , where P _measured is the power value that the base station emulator can read, and P _real is the actual power that reaches the radio frequency port of the base station emulator. CableLoss sets the value for the RF line loss. If the WCDMA mobile terminal transmits 23.5dBm of power here, the base station emulator also obtains 23.5dBm of power on the RF connector, minus the line loss of 0.5dBm, so the base station emulator displays and reports to the computer at 23dBm. power.

Subsequently, the RF parameters are saved in the eighth step. In the actual conduction test, since the loss of the RF cable is a normal value, the channel CH9613 must be able to output 23.5 dBm of power. Since the intermediate channel calibration setting is the same as before, the conduction maximum power output is 23dBm set by the computer.

In the highest channel CH9887, since the actual line loss is 1 dB higher than the standard line loss, in order for the base station emulator CMU200 or other instruments to read 23 dBm of output power, the WCDMA mobile terminal only needs to transmit 22 dBm of power, and then in the eighth step. The central bank saved this set of RF parameters. In the actual conduction test, since the loss of the RF cable is a normal value, the channel CH9613 can output 22 dBm of power.

It can be seen from the above analysis that the present invention can conveniently complete the function of setting different channels of different channels in the same frequency band of the WCDMA mobile terminal, and this function can facilitate the debugging of the WCDMA mobile terminal antenna.

Based on the above method, the present invention further provides a calibration system for WCDMA mobile terminal power calibration, which includes a computer and a base station emulator, the computer being connected to a base station emulator; and during calibration, the WCDMA mobile terminal respectively Connect to a computer and base station emulator.

The computer includes: a first control module for controlling a WCDMA mobile terminal to enter a calibration mode; a second control module for controlling a WCDMA mobile terminal to enter a first working frequency band; and a third control for controlling a base station emulator to enter a test mode a first setting module for simultaneously setting a radio frequency signal line loss of a plurality of frequency segments of a WCDMA mobile terminal by using a line loss table setting method; for causing a WCDMA mobile terminal to enter an intermediate channel, the radio frequency amplifier first enters a high gain mode, and scans the WCDMA The output power of the mobile terminal and the power at the antenna port of the WCDMA mobile terminal; then the RF amplifier enters the medium gain mode, scanning the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port; finally the RF amplifier enters the low gain mode to scan the WCDMA mobile a measurement module for output power of the terminal and power at the antenna port of the WCDMA mobile terminal; a first calibration module for calibrating a difference between an output power of the other channel of the WCDMA mobile terminal and an output power of the intermediate channel in the first working frequency band; Maximum transmit power for WCDMA mobile terminals a second calibration module for calibrating the power detection circuit of the intermediate channel and other channels, and reading the difference; a second setting module for modifying the operating band of the WCDMA mobile terminal and for storing the power data and all the RF parameters obtained by the calibration Storage module.

It is to be understood that those skilled in the art can make equivalent substitutions or changes to the inventions and the inventions of the present invention, and all such changes or substitutions fall within the scope of the appended claims.

Claims

A method for implementing power calibration of a WCDMA mobile terminal using a calibration system, the calibration system comprising a computer and a base station emulator, the computer being coupled to a base station emulator; and at the time of calibration, the WCDMA mobile terminal and the computer and base station emulator, respectively Connection, characterized in that the method comprises:

A. The computer controls the WCDMA mobile terminal to enter the calibration mode;

B. The computer controls the WCDMA mobile terminal to enter the first working frequency band;

C. The computer controlled base station emulator enters the test mode;

D. Using the line loss table setting method to simultaneously set the RF signal line loss of multiple frequency segments of the WCDMA mobile terminal;

E. The WCDMA mobile terminal enters the intermediate channel, and the radio frequency amplifier first enters the high gain mode, scans the output power of the WCDMA mobile terminal and the power of the WCDMA mobile terminal antenna port, and stores the power data; then the radio frequency amplifier enters the medium gain mode, and scans the WCDMA. The output power of the mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and storing the power data; finally, the radio frequency amplifier enters the low gain mode to scan the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and store the power data;

F. calibrating the difference between the output power of the other channels and the output power of the intermediate channel of the WCDMA mobile terminal in the first working frequency band;

G. calibrating the power detection circuit of the intermediate channel and other channels under the maximum transmit power of the WCDMA mobile terminal, and reading the difference;

H. Modify the working frequency band and repeat steps B to G until all the working frequency bands supported by the WCDMA mobile terminal are calibrated.
The method for implementing power calibration of a WCDMA mobile terminal using a calibration system according to claim 1, wherein after the step H, the method further comprises:

I. Store all the RF parameters obtained by calibration into the WCDMA mobile terminal and exit the calibration.
The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system according to claim 1, wherein the step F specifically includes:

In the high gain mode, when the WCDMA mobile terminal outputs the same power, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power;

In the medium gain mode, when the WCDMA mobile terminal outputs the same power, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power;

In the low gain mode, the antenna port output power difference is measured when the WCDMA mobile terminal outputs the same power on the other channels and the intermediate channel of the WCDMA mobile terminal.
The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system according to claim 1, wherein the first working frequency band is a WCDMA Band I band.
The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system according to claim 4, wherein the frequency of the first working frequency band is 1920 MHz-1980 MHz, and the line loss of the 1920-1940 MHz band is set by using a line loss table setting method. For XdB, the line loss of the 1940-1960 MHz band is set to YdB, and the line loss of the 1960 MHz-1980 MHz band is set to ZdB, and X=Y-0.5, Z=Y+1.
The method for implementing power calibration of a WCDMA mobile terminal by using a calibration system according to claim 1, wherein the frequency of the first working frequency band is 1920 MHz-1980 MHz, and the line loss of the 1920-1940 MHz band is set by using a line loss table setting method. For XdB, the line loss of the 1940-1960 MHz band is set to YdB, and the line loss of the 1960 MHz-1980 MHz band is set to ZdB, and X=Y-0.5, Z=Y+1.
The method for implementing WCDMA mobile terminal power calibration using a calibration system according to claim 1, wherein the base station emulator adopts a base station emulator of the type CMU200 or Agilent 8960.
A method for implementing power calibration of a WCDMA mobile terminal using a calibration system, the calibration system comprising a computer and a base station emulator, the computer being coupled to a base station emulator; and at the time of calibration, the WCDMA mobile terminal and the computer and base station emulator, respectively Connection, characterized in that the method comprises:

A. The computer controls the WCDMA mobile terminal to enter the calibration mode;

B. The computer controls the WCDMA mobile terminal to enter the first working frequency band;

C. The base station emulator is controlled by the computer to enter the test mode.
The method of claim 8, wherein the method further comprises:

D. Using the line loss table setting method to simultaneously set the RF signal line loss of multiple frequency segments of the WCDMA mobile terminal;

E. The WCDMA mobile terminal enters the intermediate channel, and the radio frequency amplifier first enters the high gain mode, scans the output power of the WCDMA mobile terminal and the power of the WCDMA mobile terminal antenna port, and stores the power data; then the radio frequency amplifier enters the medium gain mode, and scans the WCDMA. The output power of the mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and storing the power data; finally, the radio frequency amplifier enters the low gain mode to scan the output power of the WCDMA mobile terminal and the power at the antenna port of the WCDMA mobile terminal, and store the power data;

F. calibrating the difference between the output power of the other channels and the output power of the intermediate channel of the WCDMA mobile terminal in the first working frequency band.
The method of claim 9, wherein the method further comprises:

G. calibrating the power detection circuit of the intermediate channel and other channels under the maximum transmit power of the WCDMA mobile terminal, and reading the difference;

H. Modify the working frequency band and repeat steps B to G until all the working frequency bands supported by the WCDMA mobile terminal are calibrated.
A calibration system for WCDMA mobile terminal power calibration, comprising: a computer and a base station emulator, wherein the computer is connected to a base station emulator; and during calibration, the WCDMA mobile terminal is respectively connected to a computer and a base station emulator Wherein the computer comprises:

a first control module for controlling a WCDMA mobile terminal to enter a calibration mode;

a second control module for controlling a WCDMA mobile terminal to enter a first working frequency band;

a third control module for controlling the base station emulator to enter the test mode;

a first setting module for simultaneously setting a radio frequency signal line loss of a plurality of frequency segments of a WCDMA mobile terminal by using a line loss table setting method;

For the WCDMA mobile terminal to enter the intermediate channel, the radio frequency amplifier first enters a high gain mode, scans the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port; then the radio frequency amplifier enters the medium gain mode, and scans the output power of the WCDMA mobile terminal. And the power at the WCDMA mobile terminal antenna port; finally the radio frequency amplifier enters a low gain mode to scan the output power of the WCDMA mobile terminal and the power module at the WCDMA mobile terminal antenna port;

a first calibration module for calibrating a difference between an output power of another channel and an intermediate channel output power of the WCDMA mobile terminal in the first working frequency band;

a second calibration module for calibrating the power detection circuit of the intermediate channel and other channels and reading the difference under the maximum transmit power of the WCDMA mobile terminal;

A second setting module for modifying a working frequency band of a WCDMA mobile terminal.
The calibration system of claim 11 wherein said WCDMA mobile terminal comprises: a storage module for storing power data and all calibrated RF parameters.
A calibration system for WCDMA mobile terminal power calibration, comprising: a computer and a base station emulator, wherein the computer is connected to a base station emulator; and during calibration, the WCDMA mobile terminal is respectively connected to a computer and a base station emulator Wherein the computer comprises:

a first control module for controlling a WCDMA mobile terminal to enter a calibration mode;

a second control module for controlling a WCDMA mobile terminal to enter a first working frequency band;

A third control module for controlling the base station emulator to enter the test mode.
The calibration system of claim 13 wherein said computer further comprises:

a first setting module for simultaneously setting a radio frequency signal line loss of a plurality of frequency segments of a WCDMA mobile terminal by using a line loss table setting method;

For the WCDMA mobile terminal to enter the intermediate channel, the radio frequency amplifier first enters a high gain mode, scans the output power of the WCDMA mobile terminal and the power at the WCDMA mobile terminal antenna port; then the radio frequency amplifier enters the medium gain mode, and scans the output power of the WCDMA mobile terminal. And the power at the WCDMA mobile terminal antenna port; finally the radio frequency amplifier enters a low gain mode to scan the output power of the WCDMA mobile terminal and the power module at the WCDMA mobile terminal antenna port;

A first calibration module for calibrating a difference between an output power of the other channels and an intermediate channel output power of the WCDMA mobile terminal in the first operating frequency band.
The calibration system of claim 14 wherein said computer further comprises:

a second calibration module for calibrating the power detection circuit of the intermediate channel and other channels and reading the difference under the maximum transmit power of the WCDMA mobile terminal;

A second setting module for modifying a working frequency band of a WCDMA mobile terminal.