CN101309099B - Radio frequency power control method of mobile terminal - Google Patents
Radio frequency power control method of mobile terminal Download PDFInfo
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- CN101309099B CN101309099B CN2008101382826A CN200810138282A CN101309099B CN 101309099 B CN101309099 B CN 101309099B CN 2008101382826 A CN2008101382826 A CN 2008101382826A CN 200810138282 A CN200810138282 A CN 200810138282A CN 101309099 B CN101309099 B CN 101309099B
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- ambient temperature
- controlling amount
- gain controlling
- frequency power
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Abstract
The invention discloses a radio frequency power control method for a mobile terminal, which is characterized in that the method includes the following steps: a), obtain environment temperature; b), obtain the gain control volume corresponding to the environment temperature; c), the gain control value controls the gain of a radio frequency amplifier. The radio frequency power control method of theinvention controls the radio frequency power through the detection of the environment temperature, thus saves the HDET circuit or the linear gain logarithmic amplifier power detector circuit, and reduce the cost.
Description
Technical field
The present invention relates to field of mobile terminals, relate in particular to a kind of radio frequency power control method of mobile terminal.
Background technology
In the prior art, control mainly contains following dual mode to the radio-frequency power of portable terminal:
First kind, adopt HDET (High power detector, the high power detector) circuit of separate type the radio frequency power output of portable terminal to be detected, and carry out the control of radio-frequency power according to this testing result;
Second kind, adopt linear gain logarithmic amplifier power detector to add the mode of coupler; It is coupled to said linear gain logarithmic amplifier power detector through the logarithm coupler with radio-frequency power output, and is detected and then information is provided for the control radio frequency power output by it.
For first kind of scheme, owing to be separate type HDET circuit, thereby can take bigger pcb board space, be unfavorable for the volume control of portable terminal.Simultaneously, the existence of HDET circuit itself has also expended device resource, has increased cost;
For second kind of scheme, because the paster fraction defective of linear gain logarithmic amplifier power detector is high, material casting is serious, thereby cost is higher.
Summary of the invention
Technical problem to be solved by this invention is the radio frequency power control method of mobile terminal that provides a kind of cost low.
In order to solve the problems of the technologies described above, the present invention proposes a kind of radio frequency power control method of mobile terminal, may further comprise the steps:
A, acquisition ambient temperature;
The gain controlling amount of b, the corresponding said ambient temperature of acquisition;
C, the gain of said gain controlling amount control radio-frequency power amplifier.
Wherein, also comprise step c0 between step b and the step c:
C0, obtain the gain controlling amount offset of corresponding said ambient temperature, and with the addition of said gain controlling amount as new gain controlling amount.
Wherein, the corresponding relation of storage environment temperature range and gain controlling amount in advance; And,
Step b is through judging which ambient temperature interval is said ambient temperature be positioned at, and obtains said gain controlling amount according to said corresponding relation.
Preferably, said ambient temperature interval is the interval with a certain temperature and neighborhood thereof.
Preferably, said ambient temperature obtains through the temperature-compensation circuit of multiplexing said portable terminal.
Wherein, store the corresponding relation of said ambient temperature and said gain controlling amount offset in advance; After obtaining said ambient temperature, step c0 obtains said gain controlling amount offset through this corresponding relation.
Wherein, said corresponding relation comprises: judge the magnitude relationship of said ambient temperature and preset ambient temperature, the different situations of corresponding said magnitude relationship are provided with said gain controlling amount offset.
Preferably:
Said ambient temperature is during greater than said preset ambient temperature, and said gain controlling amount offset is a negative value;
Said ambient temperature is during less than said preset ambient temperature, said gain controlling amount offset be on the occasion of;
When said ambient temperature equaled said preset ambient temperature, said gain controlling amount offset was zero.
Preferably:
The corresponding relation of storage environment temperature range and gain controlling amount in advance, step b be through judging which ambient temperature interval is said ambient temperature be positioned at, and obtain said gain controlling amount according to said corresponding relation;
Store the corresponding relation of said ambient temperature and said gain controlling amount offset in advance; After obtaining said ambient temperature, step c0 obtains said gain controlling amount offset through this corresponding relation.
Wherein, said corresponding relation comprises: judge the magnitude relationship of said ambient temperature and preset ambient temperature,
Said ambient temperature is during greater than said preset ambient temperature, and said gain controlling amount offset is a negative value;
Said ambient temperature is during less than said preset ambient temperature, said gain controlling amount offset be on the occasion of;
When said ambient temperature equaled said preset ambient temperature, said gain controlling amount offset was zero;
And said preset ambient temperature is the value in the said ambient temperature interval of storing in advance.
The present invention is owing to control radio-frequency power through the detection to ambient temperature, thereby omitted circuit such as HDET circuit or linear gain logarithmic amplifier power detector, reduced cost.Simultaneously, because the detection of said ambient temperature is not to use special-purpose temperature sensing circuit, but the multiplexing temperature-compensation circuit of portable terminal, thereby further reduced cost again.
Description of drawings
Fig. 1 is the flow chart of an embodiment of a kind of radio frequency power control method of mobile terminal of the present invention;
Fig. 2 is the sketch map of an embodiment of corresponding relation of temperature and the offset at 10 ℃ at every interval from-20 ℃ to 60 ℃.
Embodiment
At first, briefly set forth principle of the present invention.The present invention comes correspondence to obtain the gain controlling amount of radio-frequency power through the testing environment temperature, finally controls the radio-frequency power amplifier power output through this gain controlling amount.
With reference to figure 1, illustrate the flow chart of an embodiment of a kind of radio frequency power control method of mobile terminal of the present invention.Radio-frequency power with the transmitting chain of portable terminal in the present embodiment is controlled to be example, and is as shown in the figure, may further comprise the steps:
S100 obtains ambient temperature.
The ambient temperature here is meant radio-frequency power amplifier (Power Amplifier, PA) ambient temperature of periphery of said portable terminal; And; In a preferred embodiment of the present invention; Said ambient temperature obtains, thereby can increase special temperature sensing circuit through multiplexing TCXO (Temperature Compensated Crystal Oscillators, temperature compensating crystal oscillator) temperature-compensation circuit; From the opposing party, reduce cost, also reduced power consumption.
In addition, owing to adopt said TCXO temperature-compensation circuit that temperature is detected sampling, thereby can effectively guarantee the precision of temperature detection, and then guarantee the accuracy of radio-frequency power control;
S101 obtains the gain controlling amount of corresponding said ambient temperature.
Obtain said gain controlling amount through preset ambient temperature in the corresponding relation of gain controlling amount in this step.Described gain controlling amount can be PDM (Pulse Density Modulation, the pulse density modulated) value of AGC (Auto Gain Controller, automatic gain controller), for example:
When said portable terminal dispatches from the factory, in the RF calibration process, set up the corresponding relation of said ambient temperature and gain controlling amount, and this corresponding relation is stored in the said portable terminal.The embodiment of a corresponding relation of the present invention can obtain in the following manner:
At FTM pattern (Factory Test Mode; Factory's detecting pattern) selects down radio-frequency channel (for example 358,150,306,462,774,46 etc.); The 10 ℃ of control in the every interval AGC PDM value from-20 ℃ to 60 ℃; Make transmitting power be controlled at normal power level (for example 23dbm, 24dbm etc.), simultaneously record AGC PDM value and corresponding ambient temperature value at this moment.An embodiment of this corresponding relation can be with reference to figure 2; As shown in the figure; Each temperature corresponding to 10 ℃ at every interval from-20 ℃ to 60 ℃ all has corresponding AGCPDM value, in this step, only needs come correspondence to obtain corresponding AGC PDM value according to detected ambient temperature.
In addition, because can not all ambient temperature value of limit,, when detected a certain ambient temperature is arranged in the neighborhood of one of ambient temperature shown in Figure 2, can think also that then corresponding relation sets up therefore for corresponding relation shown in Figure 2.
For example, the neighborhood interval that preestablishes 20 ℃ is [15 ℃, 25 ℃], is 18 ℃ if record ambient temperature this moment, thinks still then to belong to 20 ℃ that the AGC PDM value of this moment is still got 20 ℃ of pairing AGC PDM 5 values among Fig. 2.
S102 obtains the gain controlling amount offset of corresponding said ambient temperature.
That is, S100 has obtained ambient temperature when step, and when step S101 had obtained the gain controlling amount according to this ambient temperature again, in order further to improve the precise control property of radio-frequency power, this step had obtained gain controlling amount offset corresponding to said ambient temperature.Obtaining of this gain controlling amount offset can be obtained through the corresponding relation of said ambient temperature and said gain controlling amount offset, and an embodiment of this corresponding relation also can be with reference to figure 2.
As shown in Figure 2, corresponding to each temperature at 10 ℃ at every interval the corresponding compensation value is arranged all, and this offset there is positive and negative branch from-20 ℃ to 60 ℃.
Concrete, when detected ambient temperature among the step S100 equaled among Fig. 2 a certain ambient temperature, this moment, corresponding offset was 0; When said detected ambient temperature during greater than said a certain preset ambient temperature, then this moment, said offset was a negative value; On the contrary, if said detected ambient temperature is during less than said a certain preset ambient temperature, this moment said offset be on the occasion of.For example:
Detecting ambient temperature among the step S100 is 18 ℃ (understanding still according to the example among the step S101 for ease), then at first judges 18 ℃ of neighborhood intervals that are arranged in which ambient temperature; Through judging that it is arranged in 20 ℃ neighborhood interval.Then, judge 18 ℃ of magnitude relationship with 20 ℃ (ambient temperatures that are equivalent to preset) because 18 ℃ less than 20 ℃, thereby the offset of 18 ℃ of corresponding ambient temperatures be on the occasion of, for Fig. 2, then get+e1.
In like manner, be 20 ℃ if detect ambient temperature among the step S100, then offset is 0; If detecting ambient temperature is 23 ℃, then offset is got-e2.
Wherein, the concrete numerical value of offset place row shown in Figure 2 is predefined values.In a preferred embodiment of the present invention, said offset is through writing down the AGC PDM difference under each ambient temperature, dividing equally the back as said offset.For example:
The temperature at 10 ℃ at every interval is 9 temperature values shown in Fig. 2 (understanding still according to the examples the step S101 for ease) from-20 ℃ to 60 ℃; Said AGC PDM difference promptly is meant the difference of the ambient temperature that a certain ambient temperature is adjacent; Such as 10 ℃ of poor (that is AGCPDM 4-AGC PDM 5) with 20 ℃ AGC PDM.Be meant said difference is divided equally value by way of compensation,, then be that (AGC PDM 4-AGC PDM 5) divided equally said dividing equally for last example.Value after dividing equally is as the interval offset greater than 10 ℃ of parts of 10 ℃ of neighborhoods, also as the interval offset less than 20 ℃ of parts of 20 ℃ of neighborhoods.
Need to prove that each value of offset row can be the same or different among Fig. 2.
S103, addition as gain controlling amount and said gain controlling amount offset as new gain controlling amount.
That is, the offset with second compensation adds in the initial gain controlling amount that obtains, to reach the purpose of controlling radio-frequency power more accurately;
S104, the gain of said new gain controlled quentity controlled variable control radio-frequency power amplifier.
That is, obtain just the output gain of radio-frequency power amplifier to be controlled after the new gain controlling amount, to maintain normal level through the mode of software and hardware.
S105 finishes.
It should be noted that; Acquisition to ambient temperature among the present invention can be directly to obtain real temperature value; It also can be the value (for example, because the ambient temperature of gathering is an analog signal, it can be changed through analog to digital converter) after the acquisition conversion corresponding with said ambient temperature; This corresponding relation can obtain and store in advance, in use transfers this corresponding relation and gets final product.
On the other hand, 60 ℃ of said maximum temperatures and minimum temperature-20 ℃ only are a kind of situation, and it can adopt other extreme value in any case.For 10 ℃ of situation that write down AGC PDM value at interval, neither be unique, 5 ℃, 15 ℃, 1 ℃ at interval or the like the invention is not restricted to this as required.
Therefore, can know, can carry out radio-frequency power control fully, thereby can the HDET circuit in the available circuit be omitted, thereby reduce cost through temperature compensation calibration through above elaboration.
In addition and since to the detection of ambient temperature multiplexing the TCXO temperature-compensation circuit, thereby can guarantee higher accuracy, and omit special temperature sensing circuit, reduced cost on the one hand, also reduced power consumption on the other hand.
Above disclosedly be merely a kind of preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (9)
1. a radio frequency power control method of mobile terminal is characterized in that, may further comprise the steps:
A, acquisition ambient temperature, said ambient temperature obtains through multiplexing TCXO temperature-compensation circuit;
The gain controlling amount of b, the corresponding said ambient temperature of acquisition;
C0, obtain the gain controlling amount offset of corresponding said ambient temperature, and with the addition of said gain controlling amount as new gain controlling amount;
Wherein, the corresponding relation through ambient temperature and gain controlling amount obtains said gain controlling amount, and this kind corresponding relation obtains in the following manner:
Under the FTM pattern, select radio-frequency channel, the 10 ℃ of control in every interval AGC PDM value makes transmitting power be controlled at the normal power level from-20 ℃ to 60 ℃, simultaneously record AGC PDM value and corresponding ambient temperature value at this moment;
C, the gain of said gain controlling amount control radio-frequency power amplifier.
2. radio frequency power control method according to claim 1 is characterized in that, in advance the corresponding relation of storage environment temperature range and gain controlling amount; And,
Step b is through judging which ambient temperature interval is said ambient temperature be positioned at, and obtains said gain controlling amount according to said corresponding relation.
3. radio frequency power control method according to claim 2 is characterized in that, said ambient temperature interval is the interval with a certain temperature and neighborhood thereof.
4. radio frequency power control method according to claim 1 is characterized in that, said ambient temperature obtains through the temperature-compensation circuit of multiplexing said portable terminal.
5. radio frequency power control method according to claim 1 is characterized in that, stores the corresponding relation of said ambient temperature and said gain controlling amount offset in advance; After obtaining said ambient temperature, step c0 obtains said gain controlling amount offset through this corresponding relation.
6. radio frequency power control method according to claim 5; It is characterized in that; Said corresponding relation comprises: judge the magnitude relationship of said ambient temperature and preset ambient temperature, the different situations of corresponding said magnitude relationship are provided with said gain controlling amount offset.
7. radio frequency power control method according to claim 6 is characterized in that:
Said ambient temperature is during greater than said preset ambient temperature, and said gain controlling amount offset is a negative value;
Said ambient temperature is during less than said preset ambient temperature, said gain controlling amount offset be on the occasion of;
When said ambient temperature equaled said preset ambient temperature, said gain controlling amount offset was zero.
8. radio frequency power control method according to claim 1 is characterized in that:
The corresponding relation of storage environment temperature range and gain controlling amount in advance, step b be through judging which ambient temperature interval is said ambient temperature be positioned at, and obtain said gain controlling amount according to said corresponding relation;
Store the corresponding relation of said ambient temperature and said gain controlling amount offset in advance; After obtaining said ambient temperature, step c0 obtains said gain controlling amount offset through this corresponding relation.
9. radio frequency power control method according to claim 8 is characterized in that, the corresponding relation of said ambient temperature and said gain controlling amount offset comprises: judge the magnitude relationship of said ambient temperature and preset ambient temperature,
Said ambient temperature is during greater than said preset ambient temperature, and said gain controlling amount offset is a negative value;
Said ambient temperature is during less than said preset ambient temperature, said gain controlling amount offset be on the occasion of;
When said ambient temperature equaled said preset ambient temperature, said gain controlling amount offset was zero;
And said preset ambient temperature is the value in the said ambient temperature interval of storing in advance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101382826A CN101309099B (en) | 2008-07-10 | 2008-07-10 | Radio frequency power control method of mobile terminal |
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| CN2008101382826A CN101309099B (en) | 2008-07-10 | 2008-07-10 | Radio frequency power control method of mobile terminal |
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| CN101309099A CN101309099A (en) | 2008-11-19 |
| CN101309099B true CN101309099B (en) | 2012-05-09 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8385854B2 (en) * | 2009-05-21 | 2013-02-26 | Qualcomm Incorporated | Adaptive parametric power amplifier protection circuit |
| FR2954870B1 (en) * | 2009-12-28 | 2012-08-17 | Continental Automotive France | METHOD FOR CONTROLLING THE EMISSION POWER OF A TRANSMITTER SYSTEM INCORPORATED IN AN AUTOMOTIVE VEHICLE ELECTRONIC HOUSING, AND ELECTRONIC HOUSING REALIZED |
| CN101873617A (en) * | 2010-06-12 | 2010-10-27 | 华为终端有限公司 | Method, system and mobile terminal for radio frequency power calibration |
| CN102761905B (en) * | 2011-04-26 | 2016-03-30 | 华为技术有限公司 | Message treatment method, equipment and system |
| CN102664594B (en) * | 2012-05-29 | 2014-09-10 | 东南大学 | Log amplifier with temperature compensation function |
| CN105224002B (en) * | 2014-06-30 | 2017-01-18 | 展讯通信（上海）有限公司 | Temperature compensating method and device for radio frequency system and mobile terminal |
| CN104901751B (en) * | 2015-05-07 | 2018-03-09 | 深圳市鼎阳科技有限公司 | A kind of radio-frequency apparatus temperature compensation and device |
| CN108055424B (en) * | 2018-01-23 | 2020-11-13 | 扬州海科电子科技有限公司 | 2-18GHz large dynamic detection logarithmic video amplifier |
| CN108964838A (en) * | 2018-06-12 | 2018-12-07 | Oppo广东移动通信有限公司 | transmission rate adjusting method, device and electronic device |
| CN110087289A (en) * | 2019-04-16 | 2019-08-02 | 深圳市博实结科技有限公司 | Communication module control method, device, computer equipment and storage medium |
| CN110311633A (en) * | 2019-07-08 | 2019-10-08 | 成都锐芯盛通电子科技有限公司 | Millimeter wave broadband detection warm linearity autocompensation installation and its method entirely |
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| CN1474623A (en) * | 2002-07-25 | 2004-02-11 | 三星电子株式会社 | Method for compensating transmission unit power of mobile communication terminal |
| CN101034914A (en) * | 2007-04-10 | 2007-09-12 | 凯明信息科技股份有限公司 | Method and device for the RF performance temperature-self-adaptive compensation of the mobile communication terminal |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474623A (en) * | 2002-07-25 | 2004-02-11 | 三星电子株式会社 | Method for compensating transmission unit power of mobile communication terminal |
| CN101034914A (en) * | 2007-04-10 | 2007-09-12 | 凯明信息科技股份有限公司 | Method and device for the RF performance temperature-self-adaptive compensation of the mobile communication terminal |
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