CN105224002B - Temperature compensating method and device for radio frequency system and mobile terminal - Google Patents
Temperature compensating method and device for radio frequency system and mobile terminal Download PDFInfo
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Abstract
Provided is a temperature compensating method and device for a radio frequency system and a mobile terminal. The temperature compensating method comprises following steps: acquiring current temperature value of a power amplifier; and acquiring power attenuation value corresponding to current temperature value in a pre-set mapping table. The pre-set mapping table is characterized in that power attenuation values correspond to the power amplifier at different temperature; and power attenuation value corresponding to current temperature value is adopted for temperature compensation of the power amplifier. By adoption of the method, device and the mobile terminal, efficiency of temperature compensation can be effectively increased.
Description
Technical field
The present invention relates to wireless communication field, more particularly, to a kind of radio system temperature compensation, device and movement are eventually
End.
Background technology
In radio system, RF Components are easily influenced by temperature.Such as power amplifier, at different temperature,
The power output of power amplifier can produce change by a relatively large margin, thus having influence on the performance of whole radio system.
In order to solve the impact to RF Components function for the temperature, need to carry out the benefit related to temperature to RF Components
Repay measure.The temperature compensation of existing power amplifier is: after end product is carried out, test terminal at different temperatures
Transmission power, and be compared with the transmission power of terminal under normal temperature, according to difference therebetween, power amplifier entered
Row compensates.For example, rise with temperature, power amplifier gain declines, and leads to the transmission power of terminal to decline, thus necessary
Power amplifier is compensated, makes up the loss that power amplifier gain decline causes.
But, existing temperature compensation needs repeatedly to be tested for different terminals and compensate, testing time
More, less efficient.
Content of the invention
The problem that the embodiment of the present invention solves is how to improve the efficiency of temperature-compensating.
For solving the above problems, the embodiment of the present invention provides a kind of radio system temperature compensation, comprising: obtain power
The current temperature value of amplifier；Corresponding power attenuation value under current temperature value is obtained from default mapping table, described default
Mapping table be: the power attenuation value of corresponding described power amplifier under different temperatures；Corresponded to using described current temperature value
Power attenuation value temperature-compensating is carried out to described power amplifier.
Optionally, described radio system temperature compensation also includes: the transmission power of the described power amplifier of detection is
No reach preset value, when the transmission power of described power amplifier reaches preset value, temperature-compensating is carried out to power detector.
Optionally, described temperature-compensating is carried out to power detector, comprising: obtain the Current Temperatures of described power detector
Value, according to default power detector temperature compensation table, carries out temperature-compensating, described power detector to described power detector
Temperature compensation table is: the power that described power detector detects at different temperatures is with respect to the work(detecting under fixed temperature
The difference of rate.
Optionally, described according to default power detector temperature compensation table, described power detector is entered trip temperature mend
Repay, comprising: the transmission power according to described power amplifier and the current temperature value of described power detector, in the inspection of described power
Survey in device temperature compensation table and search corresponding offset, temperature-compensating is carried out to described power detector.
For solving the above problems, the embodiment of the present invention additionally provides a kind of radio system temperature compensation means, comprising: first
Acquiring unit, for obtaining the current temperature value of power amplifier；Second acquisition unit, for obtaining from default mapping table
Corresponding power attenuation value under current temperature value, described default mapping table is: corresponding described power amplification under different temperatures
The power attenuation value of device；First temperature compensation unit, for using described current temperature value corresponding power attenuation value to described
Power amplifier carries out temperature-compensating.
Optionally, described radio system temperature compensation means, also includes: second temperature compensating unit, described for detecting
Whether the transmission power of power amplifier reaches preset value, when the transmission power of described power amplifier reaches preset value, right
Power detector carries out temperature-compensating.
Optionally, described second temperature compensating unit, for obtaining the current temperature value of described power detector, according to pre-
If power detector temperature compensation table, described power detector is carried out with temperature-compensating, described power detector temperature-compensating
Table is: the power that described power detector detects at different temperatures is with respect to the difference of the power detecting under fixed temperature
Value.
Optionally, described second temperature compensating unit, for the transmission power according to described power amplifier and described work(
The current temperature value of rate detector, searches corresponding offset, to described power in described power detector temperature compensation table
Detector carries out temperature-compensating.
The embodiment of the present invention additionally provides a kind of mobile terminal, including the radio system temperature-compensating described in any of the above-described kind
Device.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantage that
By obtaining the current temperature value of power amplifier, default mapping table obtains power under current temperature value and puts
The power attenuation value of big device, using this power attenuation value as the temperature compensation value of power amplifier, carries out temperature to power amplifier
Degree compensates.Due to directly can obtain corresponding power attenuation value under current temperature value from mapping table, it is right therefore not need again
Different terminals is repeatedly tested and is compensated, thus improving the efficiency of compensating temperature of power amplifier.
Further, when the transmission power of power amplifier reaches preset value, power detector obtains power amplifier
Transmission power, according to the current temperature value of power detector, in default power detector temperature compensation table, finds correspondence
Offset, temperature-compensating is carried out to the transmission power of power amplifier.By carrying out to power amplifier and power detector
Temperature-compensating, can effectively improve the precision of temperature-compensating.
Brief description
Fig. 1 is the flow chart of one of embodiment of the present invention radio system temperature compensation；
Fig. 2 is the flow chart of another kind of radio system temperature compensation in the embodiment of the present invention；
Fig. 3 is the structural representation of one of embodiment of the present invention radio system temperature compensation means.
Specific embodiment
In order to solve the impact to RF Components function for the temperature, need to carry out the benefit related to temperature to RF Components
Repay measure.The temperature compensation of existing power amplifier is: after end product is carried out, test terminal at different temperatures
Transmission power, and be compared with the transmission power of terminal under normal temperature, according to difference therebetween, power amplifier entered
Row compensates.For example, rise with temperature, power amplifier gain declines, and leads to the transmission power of terminal to decline, thus necessary
Power amplifier is compensated, makes up the loss that power amplifier gain decline causes.But, existing temperature compensation
Need repeatedly to be tested for different terminals and compensate, testing time is more, less efficient.
In embodiments of the present invention, by obtaining the current temperature value of power amplifier, obtain in default mapping table
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-compensating is carried out to power amplifier.Due to corresponding power attenuation under current temperature value directly can be obtained from mapping table
Value, does not therefore need different terminals repeatedly to be tested again and compensate, thus improving the effect of compensating temperature of power amplifier
Rate.
Understandable for enabling the above-mentioned purpose of the embodiment of the present invention, feature and advantage to become apparent from, right below in conjunction with the accompanying drawings
The specific embodiment of the present invention is described in detail.
Embodiments provide a kind of radio system temperature compensation, with reference to Fig. 1, enter below by way of concrete steps
Row describes in detail.
Step s101, obtains the current temperature value of power amplifier.
The current temperature value of power amplifier in being embodied as, can be obtained by default temperature sensor.
Step s102, obtains corresponding power attenuation value under current temperature value from default mapping table.
In being embodied as, default mapping table can be the power attenuation of corresponding power amplifier under different temperatures value
Value.For example, in actual applications, the temperature value of power amplifier can previously according to the temperature characterisitic of power amplifier, be obtained
The curve declining with gain, in the curve that temperature value is declined with gain, selects multiple temperature spots and its corresponding power amplification
The power attenuation value of device, such that it is able to generate default mapping table.
In being embodied as, after default mapping table generates, default mapping table can be stored mobile terminal
In.After step s101 obtains the current temperature value of power amplifier, in default mapping table, can be by the side tabled look-up
Formula, obtains the power attenuation value of the corresponding power amplifier of current temperature value.
Step s103, enters trip temperature using described current temperature value corresponding power attenuation value and mends to described power amplifier
Repay.
In being embodied as, according to the current temperature value getting power amplifier in step s101, in default mapping
In table, table look-up and obtain the power attenuation value of corresponding power amplifier.The power attenuation value of power amplifier is: power amplifier
Difference between the actual emission power under current temperature value of theoretical emitted power and power amplifier.In power amplifier
When carrying out signal transmission, corresponding power attenuation value is added with the transmission power level of power amplifier, realizes to power amplification
Device carries out temperature-compensating.
For example, under current temperature value, the theoretical emitted power of power amplifier is 19dbm.But due to power amplification
There is power attenuation in device, the actual transmission power of power amplifier only has 18.8dbm, i.e. power amplifier under current temperature value
Power attenuation value, is realized to power it is therefore desirable to be added 0.2dbm with the transmission power of power amplifier with this for 0.2dbm
Amplifier carries out temperature-compensating.
It can be seen that, by obtaining the current temperature value of power amplifier, obtain under current temperature value in default mapping table
The power attenuation value of power amplifier, using this power attenuation value as the temperature compensation value of power amplifier, to power amplifier
Carry out temperature-compensating.Due to directly corresponding power attenuation value under current temperature value can be obtained from mapping table, therefore it is not required to
Again different terminals is repeatedly tested and to be compensated, thus improving 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, walks below by way of concrete
Suddenly it is described in detail.
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 default temperature sensor.
Step s202, obtains corresponding power attenuation value under current temperature value from default mapping table.
In an embodiment of the present invention, power amplifier can be obtained previously according to the temperature characterisitic of power amplifier
The curve that temperature value is declined with gain, selects the power attenuation value of multiple temperature spots and its corresponding power amplifier, generates pre-
If mapping table.
Step s203, carries out temperature-compensating using current temperature value corresponding power attenuation value to power amplifier.
In an embodiment of the present invention, in default mapping table, tabling look-up obtains the power of corresponding power amplifier and declines
Depreciation.Corresponding power attenuation value is added with the transmission power level of power amplifier, realizes entering trip temperature to power amplifier
Compensate.
Step s204, whether the transmission 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 can be put
Big device is coupled with power detector, the power of power amplifier is coupled in power detector by coupler, by power
Detector detects the transmission power of power amplifier, is further calibrated.
In embodiments of the present invention, preset value can be set according to practical situations.For example, real in the present invention one
Apply in example, preset value is 20dbm, in an alternative embodiment of the invention, preset value is 18dbm.
Step s205, when the transmission power of power amplifier reaches preset value, carries out temperature-compensating to power detector.
In embodiments of the present invention, similar with power amplifier, power detector also has temperature characterisitic.Different
At a temperature of, for identical input power value, the testing result of power detector can be multiple different performance number, therefore need
Temperature-compensating is also carried out to power detector.
In embodiments of the present invention, according to default power detector temperature compensation table, power detector can be carried out
Temperature-compensating.Power detector temperature compensation table can be: for same performance number, power detector detects at different temperatures
To power with respect to the power detecting under fixed temperature difference.
For example, at normal temperatures (25 DEG C), the transmission power level of power amplifier is 20dbm, and power detector detects
Performance number is also 20dbm, then at normal temperatures (25 DEG C), when transmission power level is 20dbm, power detector does not need to carry out temperature
Compensate.At 30 DEG C, the transmission power of power amplifier is 20dbm, and the performance number that power detector detects is 19.8dbm, then
When 30 DEG C, power detector needs to carry out the power back-off of 0.2dbm.For same performance number, can according to actual conditions,
Set a temperature range, for example, set 0 DEG C～50 DEG C, then within 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 transmission power of different power amplifiers, above-mentioned steps can be adopted, obtain different temperature values pair
The power compensating value answered, thus generate power detector temperature compensation table.
In an embodiment of the present invention, after the generation of power detector temperature compensation table, can be according to power amplifier
Transmission power, and the current temperature value of power detector, search corresponding offset in power detector temperature compensation table,
In advance temperature-compensating is carried out to power detector.
Step s206, by the transmission power after compensating temperature of power amplifier and power detector temperature-compensating,
Transmission power as mobile terminal.
In embodiments of the present invention, the final transmission power of mobile terminal can be: through compensating temperature of power amplifier
With the transmission power after power detector temperature-compensating.
It can be seen that, when the transmission power of power amplifier reaches preset value, power detector obtains sending out of power amplifier
Penetrate power, according to the current temperature value of power detector, in default power detector temperature compensation table, find corresponding
Offset, carries out temperature-compensating to the transmission power of power amplifier.By temperature is carried out to power amplifier and power detector
Degree compensates, and can effectively improve the precision of temperature-compensating.
The embodiment of the present invention additionally provides a kind of radio system temperature compensation means 30, comprising: first acquisition unit 301,
Second acquisition unit 302 and the first temperature compensation unit 303, wherein:
First acquisition unit 301, for obtaining the current temperature value of power amplifier；
Second acquisition unit 302, for obtaining corresponding power attenuation value under current temperature value from default mapping table,
Described default mapping table is: the power attenuation value of corresponding described power amplifier under different temperatures；
First temperature compensation unit 303, for using described current temperature value corresponding power attenuation value to described power
Amplifier carries out temperature-compensating.
In being embodied as, described radio system temperature compensation means, can also include: second temperature compensating unit 304,
Described second temperature compensating unit 304 can be used for detecting whether the transmission power of described power amplifier reaches preset value, when
When the transmission power of described power amplifier reaches preset value, temperature-compensating is carried out to power detector.
In being embodied as, described second temperature compensating unit 304, can be used for obtaining the current of described power detector
Temperature value, according to default power detector temperature compensation table, carries out temperature-compensating, described power inspection to described power detector
Surveying device temperature compensation table is: the power that described power detector detects at different temperatures detects with respect under fixed temperature
Power difference.
In being embodied as, described second temperature compensating unit 304, can be used for the transmitting according to described power amplifier
Power and the current temperature value of described power detector, search corresponding compensation in described power detector temperature compensation table
Value, carries out temperature-compensating 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 can
Completed with the hardware instructing correlation by program, this program can be stored in a computer-readable recording medium, storage
Medium may include that rom, ram, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, without departing from this
In the spirit and scope of invention, all can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope limiting is defined.
Claims (7)
1. a kind of radio system temperature compensation is it is characterised in that include:
Obtain the current temperature value of power amplifier；
Obtain corresponding power attenuation value under current temperature value from default mapping table, described default mapping table is: different
At a temperature of corresponding described power amplifier power attenuation value；
Temperature-compensating is carried out to described power amplifier using described current temperature value corresponding power attenuation value；
Detect whether the transmission power of described power amplifier reaches preset value；
When the transmission power of described power amplifier reaches described preset value, temperature-compensating is carried out to power detector.
2. radio system temperature compensation as claimed in claim 1 is it is characterised in that described carry out temperature to power detector
Degree compensates, comprising: obtain the current temperature value of described power detector, according to default power detector temperature compensation table, right
Described power detector carries out temperature-compensating, and described power detector temperature compensation table is: described power detector is in not equality of temperature
The power detecting under degree is with respect to the difference of the power detecting under fixed temperature.
3. radio system temperature compensation as claimed in claim 2 it is characterised in that described according to default power detection
Device temperature compensation table, carries out temperature-compensating to described power detector, comprising: the transmission power according to described power amplifier and
The current temperature value of described power detector, searches corresponding offset, to institute in described power detector temperature compensation table
State power detector and carry out temperature-compensating.
4. a kind of radio system temperature compensation means is it is characterised in that include:
First acquisition unit, for obtaining the current temperature value of power amplifier；
Second acquisition unit, for obtaining corresponding power attenuation value under current temperature value from default mapping table, described pre-
If mapping table be: the power attenuation value of corresponding described power amplifier under different temperatures；
First temperature compensation unit, for being entered to described power amplifier using described current temperature value corresponding power attenuation value
Trip temperature compensates；
Second temperature compensating unit, whether the transmission power for detecting described power amplifier reaches preset value, when described work(
When the transmission power of rate amplifier reaches described preset value, temperature-compensating is carried out to power detector.
5. radio system temperature compensation means as claimed in claim 4 is it is characterised in that described second temperature compensating unit,
For obtaining the current temperature value of described power detector, according to default power detector temperature compensation table, to described power
Detector carries out temperature-compensating, and described power detector temperature compensation table is: described power detector detects at different temperatures
To power with respect to the power detecting under fixed temperature difference.
6. radio system temperature compensation means as claimed in claim 5 is it is characterised in that described second temperature compensating unit,
For the current temperature value of the transmission power according to described power amplifier and described power detector, in described power detector
Search corresponding offset in temperature compensation table, temperature-compensating is carried out to described power detector.
7. a kind of mobile terminal is it is characterised in that include the radio system temperature-compensating dress as described in any one of claim 4-6
Put.
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| CN201410308973.1A CN105224002B (en) | 2014-06-30 | 2014-06-30 | Temperature compensating method and device for radio frequency system and mobile terminal |
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| CN201410308973.1A CN105224002B (en) | 2014-06-30 | 2014-06-30 | Temperature compensating method and device for radio frequency system and mobile terminal |
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