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CN105224002A - Radio system temperature compensation, device and mobile terminal - Google Patents

Radio system temperature compensation, device and mobile terminal Download PDF

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Publication number
CN105224002A
CN105224002A CN201410308973.1A CN201410308973A CN105224002A CN 105224002 A CN105224002 A CN 105224002A CN 201410308973 A CN201410308973 A CN 201410308973A CN 105224002 A CN105224002 A CN 105224002A
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temperature compensation
power
value
power amplifier
described power
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CN201410308973.1A
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CN105224002B (en
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吉德成
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Abstract

A kind of radio system temperature compensation, device and mobile terminal, described temperature compensation comprises: the current temperature value obtaining power amplifier; Power attenuation value corresponding obtain current temperature value from the mapping table preset under, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures; The power attenuation value adopting described current temperature value corresponding carries out temperature compensation to described power amplifier.Adopt described method, device and mobile terminal, effectively can improve the efficiency of temperature compensation.

Description

Radio system temperature compensation, device and mobile terminal
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of radio system temperature compensation, device and mobile terminal.
Background technology
In radio system, RF Components is subject to the impact of temperature.Such as power amplifier, at different temperature, the output power of power amplifier can produce change by a relatively large margin, thus has influence on the performance of whole radio system.
In order to solve the impact of temperature radio frequency components and parts function, radio frequency components and parts are needed to carry out the indemnifying measure with temperature correlation.The temperature compensation of existing power amplifier is: after end product is carried out, at different temperatures the emissive power of test terminal, and compares with the emissive power of terminal under normal temperature, compensates power amplifier according to difference therebetween.Such as, along with temperature rises, power amplifier gain declines, and causes the emissive power of terminal to decline, so just must compensate power amplifier, makes up power amplifier gain and to decline the loss caused.
But existing temperature compensation needs repeatedly test for different terminals and compensate, and testing time is more, and efficiency is lower.
Summary of the invention
The problem that the embodiment of the present invention solves how to improve the efficiency of temperature compensation.
For solving the problem, the embodiment of the present invention provides a kind of radio system temperature compensation, comprising: the current temperature value obtaining power amplifier; Power attenuation value corresponding obtain current temperature value from the mapping table preset under, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures; The power attenuation value adopting described current temperature value corresponding carries out temperature compensation to described power amplifier.
Optionally, described radio system temperature compensation also comprises: whether the emissive power detecting described power amplifier reaches preset value, when the emissive power of described power amplifier reaches preset value, carries out temperature compensation to power detector.
Optionally, described temperature compensation is carried out to power detector, comprise: the current temperature value obtaining described power detector, according to the power detector temperature compensation table preset, carry out temperature compensation to described power detector, described power detector temperature compensation table is: the power that described power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
Optionally, the power detector temperature compensation table that described basis is preset, temperature compensation is carried out to described power detector, comprise: according to the emissive power of described power amplifier and the current temperature value of described power detector, in described power detector temperature compensation table, search corresponding offset, temperature compensation is carried out to described power detector.
For solving the problem, the embodiment of the present invention additionally provides a kind of radio system temperature compensation means, comprising: the first acquiring unit, for obtaining the current temperature value of power amplifier; Second acquisition unit, for obtaining power attenuation value corresponding under current temperature value from the mapping table preset, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures; First temperature compensation unit, carries out temperature compensation for the power attenuation value adopting described current temperature value corresponding to described power amplifier.
Optionally, described radio system temperature compensation means, also comprises: the second temperature compensation unit, whether reaches preset value for the emissive power detecting described power amplifier, when the emissive power of described power amplifier reaches preset value, temperature compensation is carried out to power detector.
Optionally, described second temperature compensation unit, for obtaining the current temperature value of described power detector, according to the power detector temperature compensation table preset, carry out temperature compensation to described power detector, described power detector temperature compensation table is: the power that described power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
Optionally, described second temperature compensation unit, for according to the emissive power of described power amplifier and the current temperature value of described power detector, in described power detector temperature compensation table, search corresponding offset, temperature compensation is carried out to described power detector.
The embodiment of the present invention additionally provides a kind of mobile terminal, comprises above-mentioned radio system temperature compensation means described in any one.
Compared with prior art, the technical scheme of the embodiment of the present invention has the following advantages:
By obtaining the current temperature value of power amplifier, in the mapping table preset, obtaining the power attenuation value of power amplifier under current temperature value, using this power attenuation value as the temperature compensation value of power amplifier, temperature compensation is carried out to power amplifier.Due to power attenuation value corresponding under current temperature value directly can be obtained from mapping table, therefore do not need repeatedly test different terminals again and compensate, thus improve the efficiency of compensating temperature of power amplifier.
Further, when the emissive power of power amplifier reaches preset value, power detector obtains the emissive power of power amplifier, according to the current temperature value of power detector, in the power detector temperature compensation table preset, find corresponding offset, temperature compensation is carried out to the emissive power of power amplifier.By carrying out temperature compensation to power amplifier and power detector, the precision of temperature compensation effectively can be improved.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of a kind of radio system temperature compensation in the embodiment of the present invention;
Fig. 2 is the process flow diagram of the another kind of radio system temperature compensation in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of radio system temperature compensation means in the embodiment of the present invention.
Embodiment
In order to solve the impact of temperature radio frequency components and parts function, radio frequency components and parts are needed to carry out the indemnifying measure with temperature correlation.The temperature compensation of existing power amplifier is: after end product is carried out, at different temperatures the emissive power of test terminal, and compares with the emissive power of terminal under normal temperature, compensates power amplifier according to difference therebetween.Such as, along with temperature rises, power amplifier gain declines, and causes the emissive power of terminal to decline, so just must compensate power amplifier, makes up power amplifier gain and to decline the loss caused.But existing temperature compensation needs repeatedly test for different terminals and compensate, and testing time is more, and efficiency is lower.
In embodiments of the present invention, by obtaining the current temperature value of power amplifier, in the mapping table preset, obtain the power attenuation value of power amplifier under current temperature value, using this power attenuation value as the temperature compensation value of power amplifier, temperature compensation is carried out to power amplifier.Due to power attenuation value corresponding under current temperature value directly can be obtained from mapping table, therefore do not need repeatedly test different terminals again and compensate, thus improve the efficiency of compensating temperature of power amplifier.
For enabling above-mentioned purpose, the feature and advantage of the embodiment of the present invention more become apparent, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
Embodiments provide a kind of radio system temperature compensation, with reference to Fig. 1, be described in detail below by way of concrete steps.
Step S101, obtains the current temperature value of power amplifier.
In concrete enforcement, the current temperature value of power amplifier can be obtained by the temperature sensor preset.
Step S102, power attenuation value corresponding obtain current temperature value from the mapping table preset under.
In concrete enforcement, the mapping table preset can be the power attenuation value of power amplifier corresponding under different temperatures value.Such as, in actual applications, can in advance according to the temperature characterisitic of power amplifier, the curve that the temperature value of acquisition power amplifier and gain decline, in the curve that temperature value and gain decline, select the power attenuation value of the power amplifier of multiple temperature spot and correspondence thereof, thus default mapping table can be generated.
In concrete enforcement, after the mapping table preset generates, default mapping table can be stored in mobile terminal.After step S101 obtains the current temperature value of power amplifier, in the mapping table preset, by the mode of tabling look-up, the power attenuation value of power amplifier corresponding to current temperature value can be obtained.
Step S103, the power attenuation value adopting described current temperature value corresponding carries out temperature compensation to described power amplifier.
In concrete enforcement, according to the current temperature value getting power amplifier in step S101, in the mapping table preset, table look-up and obtain the power attenuation value of corresponding power amplifier.The power attenuation value of power amplifier is: the theoretical emitted power of power amplifier and the difference of power amplifier between the actual emission power under current temperature value.When power amplifier carries out signal transmission, the power attenuation value of correspondence is added with the transmission power level of power amplifier, realizes carrying out temperature compensation to power amplifier.
Such as, under current temperature value, the theoretical emitted power of power amplifier is 19dBm.But because power amplifier exists power attenuation, the emissive power of power amplifier reality only has 18.8dBm, namely under current temperature value, the power attenuation value of power amplifier is 0.2dBm, therefore need 0.2dBm to be added with the emissive power of power amplifier, realize carrying out temperature compensation to power amplifier with this.
Visible, by obtaining the current temperature value of power amplifier, in the mapping table preset, obtaining the power attenuation value of power amplifier under current temperature value, using this power attenuation value as the temperature compensation value of power amplifier, temperature compensation is carried out to power amplifier.Due to power attenuation value corresponding under current temperature value directly can be obtained from mapping table, therefore do not need repeatedly test different terminals again and compensate, thus improve the efficiency of compensating temperature of power amplifier.
The embodiment of the present invention additionally provides another kind of radio system temperature compensation, with reference to Fig. 2, is described in detail below by way of concrete steps.
Step S201, obtains the current temperature value of power amplifier.
In an embodiment of the present invention, the current temperature value of power amplifier is obtained according to the temperature sensor preset.
Step S202, power attenuation value corresponding obtain current temperature value from the mapping table preset under.
In an embodiment of the present invention, can in advance according to the temperature characterisitic of power amplifier, the curve that the temperature value of acquisition power amplifier and gain decline, selects the power attenuation value of the power amplifier of multiple temperature spot and correspondence thereof, generates the mapping table preset.
Step S203, adopts power attenuation value corresponding to current temperature value to carry out temperature compensation to power amplifier.
In an embodiment of the present invention, in the mapping table preset, table look-up and obtain the power attenuation value of corresponding power amplifier.The power attenuation value of correspondence is added with the transmission power level of power amplifier, realizes carrying out temperature compensation to power amplifier.
Step S204, whether the emissive power of detection power amplifier reaches preset value.
In embodiments of the present invention, when the transmission power level of power amplifier reaches default value, power amplifier and power detector can be coupled, the power of power amplifier is coupled in power detector by coupling mechanism, by the emissive power of power detector detection power amplifier, further calibrate.
In embodiments of the present invention, preset value can set according to practical situations.Such as, in an embodiment of the present invention, preset value is 20dBm, and in an alternative embodiment of the invention, preset value is 18dBm.
Step S205, when the emissive power of power amplifier reaches preset value, carries out temperature compensation to power detector.
In embodiments of the present invention, similar with power amplifier, power detector also has temperature characterisitic.At different temperature, for identical input power value, the testing result of power detector can be multiple different performance numbers, therefore needs also to carry out temperature compensation to power detector.
In embodiments of the present invention, according to the power detector temperature compensation table preset, temperature compensation can be carried out to power detector.Power detector temperature compensation table can be: for same performance number, and the power that power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
Such as, at normal temperatures (25 DEG C), the transmission power level of power amplifier is 20dBm, the performance number that power detector detects also is 20dBm, then at normal temperatures (25 DEG C), when transmission power level is 20dBm, power detector does not need to carry out temperature compensation.At 30 DEG C, the emissive power of power amplifier is 20dBm, and the performance number that power detector detects is 19.8dBm, then, 30 DEG C time, power detector needs the power back-off of carrying out 0.2dBm.For same performance number, according to actual conditions, a temperature range can be set, such as, set 0 DEG C ~ 50 DEG C, then in the temperature range of 0 DEG C ~ 50 DEG C, select multiple temperature value, thus obtain corresponding power detector temperature compensation value.
Corresponding to the emissive power of different power amplifiers, can above-mentioned steps be adopted, obtain the power compensating value that different temperature values is corresponding, thus generating power detector temperature compensation meter.
In an embodiment of the present invention, after power detector temperature compensation table generates, can according to the emissive power of power amplifier, and the current temperature value of power detector, in power detector temperature compensation table, search corresponding offset, in advance temperature compensation is carried out to power detector.
Step S206, by the emissive power after compensating temperature of power amplifier and power detector temperature compensation, as the emissive power of mobile terminal.
In embodiments of the present invention, the emissive power that mobile terminal is final can be: the emissive power after compensating temperature of power amplifier and power detector temperature compensation.
Visible, when the emissive power of power amplifier reaches preset value, power detector obtains the emissive power of power amplifier, according to the current temperature value of power detector, in the power detector temperature compensation table preset, find corresponding offset, temperature compensation is carried out to the emissive power of power amplifier.By carrying out temperature compensation to power amplifier and power detector, the precision of temperature compensation effectively can be improved.
The embodiment of the present invention additionally provides a kind of radio system temperature compensation means 30, comprising: the first acquiring unit 301, second acquisition unit 302 and the first temperature compensation unit 303, wherein:
First acquiring unit 301, for obtaining the current temperature value of power amplifier;
Second acquisition unit 302, for obtaining power attenuation value corresponding under current temperature value from the mapping table preset, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures;
First temperature compensation unit 303, carries out temperature compensation for the power attenuation value adopting described current temperature value corresponding to described power amplifier.
In concrete enforcement, described radio system temperature compensation means, can also comprise: the second temperature compensation unit 304, whether the emissive power that described second temperature compensation unit 304 may be used for detecting described power amplifier reaches preset value, when the emissive power of described power amplifier reaches preset value, temperature compensation is carried out to power detector.
In concrete enforcement, described second temperature compensation unit 304, may be used for the current temperature value obtaining described power detector, according to the power detector temperature compensation table preset, carry out temperature compensation to described power detector, described power detector temperature compensation table is: the power that described power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
In concrete enforcement, described second temperature compensation unit 304, may be used for the current temperature value of emissive power according to described power amplifier and described power detector, in described power detector temperature compensation table, search corresponding offset, temperature compensation is carried out to described power detector.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.

Claims (9)

1. a radio system temperature compensation, is characterized in that, comprising:
Obtain the current temperature value of power amplifier;
Power attenuation value corresponding obtain current temperature value from the mapping table preset under, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures;
The power attenuation value adopting described current temperature value corresponding carries out temperature compensation to described power amplifier.
2. radio system temperature compensation as claimed in claim 1, it is characterized in that, also comprise: whether the emissive power detecting described power amplifier reaches preset value, when the emissive power of described power amplifier reaches preset value, temperature compensation is carried out to power detector.
3. radio system temperature compensation as claimed in claim 2, it is characterized in that, described temperature compensation is carried out to power detector, comprise: the current temperature value obtaining described power detector, according to the power detector temperature compensation table preset, carry out temperature compensation to described power detector, described power detector temperature compensation table is: the power that described power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
4. radio system temperature compensation as claimed in claim 3, it is characterized in that, the power detector temperature compensation table that described basis is preset, temperature compensation is carried out to described power detector, comprise: according to the emissive power of described power amplifier and the current temperature value of described power detector, in described power detector temperature compensation table, search corresponding offset, temperature compensation is carried out to described power detector.
5. a radio system temperature compensation means, is characterized in that, comprising:
First acquiring unit, for obtaining the current temperature value of power amplifier;
Second acquisition unit, for obtaining power attenuation value corresponding under current temperature value from the mapping table preset, described default mapping table is: the power attenuation value of described power amplifier corresponding under different temperatures;
First temperature compensation unit, carries out temperature compensation for the power attenuation value adopting described current temperature value corresponding to described power amplifier.
6. radio system temperature compensation means as claimed in claim 5, it is characterized in that, also comprise: the second temperature compensation unit, whether the emissive power for detecting described power amplifier reaches preset value, when the emissive power of described power amplifier reaches preset value, temperature compensation is carried out to power detector.
7. the radio system temperature compensation means as described in claim 6, it is characterized in that, described second temperature compensation unit, for obtaining the current temperature value of described power detector, according to the power detector temperature compensation table preset, carry out temperature compensation to described power detector, described power detector temperature compensation table is: the power that described power detector detects at different temperatures is relative to the difference of the power detected under fixed temperature.
8. radio system temperature compensation means as claimed in claim 7, it is characterized in that, described second temperature compensation unit, for according to the emissive power of described power amplifier and the current temperature value of described power detector, in described power detector temperature compensation table, search corresponding offset, temperature compensation is carried out to described power detector.
9. a mobile terminal, is characterized in that, comprises the radio system temperature compensation means as described in any one of claim 5-8.
CN201410308973.1A 2014-06-30 2014-06-30 Temperature compensating method and device for radio frequency system and mobile terminal Active CN105224002B (en)

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CN106507453A (en) * 2016-10-24 2017-03-15 努比亚技术有限公司 The optimization method and terminal of a kind of radiant power and power consumption
CN107145184B (en) * 2017-06-09 2019-04-09 中国电子科技集团公司第四十一研究所 A Temperature Compensation Method for Variable Power Reference Source
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