CN105812031A - Electronic equipment and control method therefor - Google Patents
Electronic equipment and control method therefor Download PDFInfo
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- CN105812031A CN105812031A CN201410852614.2A CN201410852614A CN105812031A CN 105812031 A CN105812031 A CN 105812031A CN 201410852614 A CN201410852614 A CN 201410852614A CN 105812031 A CN105812031 A CN 105812031A
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Abstract
The invention provides electronic equipment and a control method therefor, and the electronic equipment can compensate for the deviation, caused by frequency band difference or temperature changes, of the power of an output signal. The electronic equipment comprises a baseband signal generation unit which is configured to generate a first baseband signal; an input signal processing unit which is configured to process the first baseband signal and generate a second radio frequency signal; a power amplification unit which is configured to carry out the power amplification of the second radio frequency signal and generate an output signal; an antenna unit which is configured to transmit the output signal after power amplification; a detection unit which is configured to detect the power of the output signal; and a control unit which is configured to set the power of the first baseband signal according to the target power of the output signal, and carry out the dynamic adjustment of the power of the first baseband signal according to the difference between the power, detected by the detection unit, of the output signal and the target power.
Description
Technical field
The present invention relates to electronic equipment and control method thereof.
Background technology
In the such as electronic equipment such as mobile phone, panel computer, in order to communicate with outside electronic equipment, for instance launch signal by antenna.When transmitting signals to outside, generally the signal to launch is carried out power amplification, thus such as launching signal with the target power specified.Carry out in the power amplifier of power amplification being used for, because frequency range is different or variations in temperature etc. and its change in gain, thus produce deviation between actual power and the target power of launching signal after power amplification.
When the actual power of transmitting signal is less than target power, communication counterpart cannot be efficiently received transmitting signal, when the actual power of transmitting signal is more than target power, it is possible to other transmitting signal is produced interference.
Summary of the invention
The present invention completes in view of the above problems, its object is to provide a kind of electronic equipment and control method thereof, it is possible to compensate the deviation of the power of the output signal caused because of frequency range difference or variations in temperature etc..
According to an aspect of the present invention, it is provided that a kind of electronic equipment.Described electronic equipment includes: baseband signal generates unit, and configuration generates the first baseband signal；Input signal processing unit, the first baseband signal is processed and generates the second radiofrequency signal by configuration；Power amplification unit, described second radiofrequency signal is carried out power amplification by configuration, thus generating output signal；Antenna element, the described output signal after power amplification is launched by configuration；Detection unit, configuration detects the power of described output signal；And control unit, configure the target power according to described output signal and the power of described first baseband signal is set, and the power according to the described output signal detected by described detection unit and the difference of described target power, dynamically adjust the power of described first baseband signal.
According to a further aspect in the invention, it is provided that a kind of control method being applied to electronic equipment.Described electronic equipment includes power amplification unit.Described control method includes: arrange the power of the first baseband signal according to the target power of output signal；With the power of the first set baseband signal, generate described first baseband signal；Described first baseband signal is processed and generates the second radiofrequency signal；By described power amplification unit, described second radiofrequency signal is carried out power amplification, thus generating output signal；Described output signal after power amplification is launched；Detect the power of described output signal；And the difference according to the power of the described output signal detected with described target power, the power of described first baseband signal is dynamically adjusted.
Electronic equipment according to the present invention and control method thereof, it is possible to compensate because frequency range is different or variations in temperature etc. and the deviation of the power of output signal that causes, thus launching output signal with target power.
Accompanying drawing explanation
Fig. 1 indicates that the functional block diagram of the electronic equipment of embodiments of the present invention.
Fig. 2 indicates that the performance plot of the input end signal of the power amplification unit of embodiments of the present invention and the characteristic of output end signal.
Fig. 3 indicates that the performance plot of the characteristic of input signal and output signal when the power amplification unit of embodiments of the present invention is operated according to the lubber-line that non-linear gain is interval.
Fig. 4 indicates that the flow chart of the control method being applied to electronic equipment of embodiments of the present invention.
Detailed description of the invention
Below, it is explained with reference to embodiments of the present invention.There is provided the description referring to accompanying drawing, to help the understanding by claim and the example embodiment of equivalent invention defined thereof.It includes the various details helping to understand, but they can only be counted as being illustrative of.Therefore, it would be recognized by those skilled in the art that and embodiment described herein can be made various changes and modifications, without deviating from scope and spirit of the present invention.And, in order to make description clearly succinct, will omit the detailed description that it is well known that function and structure.
The electronic equipment of embodiments of the present invention is described with reference to Fig. 1.Fig. 1 indicates that the functional block diagram of the electronic equipment of embodiments of the present invention.
As it is shown in figure 1, the electronic equipment 1 of embodiments of the present invention includes: baseband signal generates unit 11, input signal processing unit 12, power amplification unit 13, antenna element 14, detection unit 15 and control unit 16.Wherein, the electronic equipment 1 of embodiments of the present invention is such as mobile phone, but is not limited to this, as long as radio band signal can carry out power amplification and launched by antenna element.
Baseband signal generates unit 11 configuration and generates the first baseband signal.Specifically, the power of the first baseband signal that baseband signal processing unit 11 is arranged with the target power according to output signal, generate the first baseband signal.
First baseband signal is processed and generates the second radiofrequency signal by input signal processing unit 12 configuration.Specifically, the first baseband signal is carried out frequency transformation by input signal processing unit 12, thus generating the second radiofrequency signal of radio band.
Such as, the electronic equipment 1 of embodiments of the present invention can launch multiple radio band (such as by antenna element, GSM900 frequency range, B1 frequency range, B40 frequency range etc.) output signal when, the second radiofrequency signal of the frequency band distributed the first base-band signal frequency being transformed in multiple radio band.Wherein, for instance the state according to electronic equipment 1 with the wireless channel of base station (not shown), the first baseband signal distribution is suitable frequency.
Second radiofrequency signal is carried out power amplification by power amplification unit 13 configuration, thus generating output signal.From the angle saving power consumption, the signal carrying out processing in the inside of electronic equipment 1 is low power signal.If low power signal is sent directly to outside by antenna element, then communication counterpart (such as base station) cannot be efficiently received the signal launched by electronic equipment 1, it is therefore desirable to the second radiofrequency signal is carried out power amplification.
Such as, the electronic equipment 1 of embodiments of the present invention can launch multiple radio band (such as by antenna, GSM900 frequency range, B1 frequency range, B40 frequency range etc.) output signal when, the second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13.Wherein, in a certain moment, the second radiofrequency signal of the power amplification unit 13 frequency band to distributing carries out power amplification, rather than the second radiofrequency signal of multiple wireless frequencies is carried out power amplification simultaneously.By the second radiofrequency signal is carried out power amplification so that output signal can be launched with the target power specified.
Output signal after power amplification is launched by antenna element 14 configuration.Wherein, communication counterpart (such as base station) receives the output signal launched by antenna element 14, thus realizing the communication with electronic equipment 1.
Wherein, owing to the gain of above-mentioned power amplification unit 13 changes along with frequency range or temperature etc..Such as, when second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13, owing to the power amplification unit 13 gain in different radio frequency band is different, cause that the power of output signal produces change, thus output signal cannot be launched with target power.Equally, when power amplification unit 13 is operated at different temperature, the gain of power amplification unit 13 produces change, causes that the power of output signal produces change, thus output signal cannot be launched with target power.
Therefore, in the electronic equipment 1 of embodiments of the present invention, by detecting unit 15 and control unit 16, the power of the first baseband signal is dynamically adjusted, thus making up the change in gain caused because of frequency range or gain difference, it is possible to launch output signal with the target power set.
Detection unit 15 configuration detects the power of output signal.
Control unit 16 configuration arranges the power of the first baseband signal according to the target power of output signal, and exports the power of signal and the difference of target power according to what detected by detection unit 15, and the power of the first baseband signal is dynamically adjusted.
Specifically, the control unit 16 gain according to the power amplification unit 13 power amplification unit 13 under special frequency band and specified temp, the power of the first baseband signal is set so that the output signal after carrying out power amplification by power amplification unit 13 becomes the target power of setting.As it has been described above, the power of the first baseband signal that baseband signal processing unit 11 is to arrange according to the target power exporting signal, generate the first baseband signal.Wherein, target power such as according to communicate with communication counterpart (such as base station) time propagation loss, communication counterpart receiving sensitivity etc. suitably set.
As it has been described above, the gain of power amplification unit 13 changes along with frequency range or temperature etc., when the power of therefore the first baseband signal as set above, there is difference with target power in the power of output signal sometimes.Therefore, control unit 16 exports the power of signal and the difference of target power according to what detected by detection unit 15, and the power of the first baseband signal is dynamically adjusted.Wherein, when the power of output signal is less than target power, suitably increase the power of the first baseband signal according to both differences, equally, when the power of output signal is less than target power, suitably reduce the power of the first baseband signal according to both differences.By the power of the first baseband signal is dynamically adjusted, until the power of the output signal after power amplification becomes the target power of setting.
Electronic equipment 1 according to the embodiment of the present invention, the power of signal and the difference of target power is exported according to what detected by detection unit 15 by control unit 16, the power of the first baseband signal is dynamically adjusted, it is thus possible to compensate the deviation of the power of the output signal that power amplification unit 13 causes because of frequency range difference or variations in temperature etc., thus launching output signal with target power.
Below, the input end signal of the power amplification unit 13 of embodiments of the present invention and the characteristic of output end signal are described with reference to Fig. 2.
As shown in Figure 2, in the lower-powered situation of the input end signal (being the second radiofrequency signal in embodiments of the present invention) of power amplification unit 13, in each supply voltage, the input end signal of power amplification unit 13 linearly changes with output end signal (in embodiments of the present invention for the output signal after power amplification).In other words, when power amplification unit 13 is set to certain supply voltage, when power less (being positioned at linear gain region) of input end signal, the gain of power amplification unit 13 is fixed.In addition, as shown in Figure 2, in each supply voltage, when power relatively big (being positioned at non-linear gain region) of the input end signal (being the second radiofrequency signal in embodiments of the present invention) of power amplification unit 13, the input end signal of power amplification unit 13 and output end signal (in embodiments of the present invention for the output signal after power amplification) are in nonlinear change.In other words, when power amplification unit 13 is set to certain supply voltage, when power relatively big (being positioned at non-linear gain region) of input end signal, the gain of power amplification unit 13 changes along with the power of input end signal.
But, when power amplification unit 13 works in linear gain region, owing to conversion efficiency is low, cause that power consumption increases.Additionally, power amplification unit 13 is when non-linear gain regional work, owing to input end signal and output end signal are nonlinear change, therefore produce non-linear distortion.When power amplification unit 13 produces non-linear distortion, result in harmonic wave, intermodulation distortion, spectral re-growth.Especially, in the field of wireless communication, specific frequency band is distributed to each electronic equipment, if producing non-linear distortion when launching the output signal of specific frequency band in certain electronic equipment, then cause that output signal power is leaked to the frequency band of the electronic equipment being assigned to other, the communication of these other electronic equipment is produced interference.In other words, at power amplification unit 13 when non-linear gain regional work, ACLR (represents the power ratio of the Power leakage the exporting signal numerical value to the first or second adjacent channel carrier power and output signal) and increases.
Therefore, from the angle saving power consumption, it is desirable to power amplification unit 13 does not work in linear gain region, from the angle reducing ACLR, it is desirable to linearly change between the power of the output signal after the power of input signal and power amplification.
In view of the foregoing, in the electronic equipment 1 of embodiments of the present invention, as it is shown on figure 3, power amplification unit 13 is operated according to the lubber-line that non-linear gain is interval.Fig. 3 indicates that the performance plot of the characteristic of input signal and output signal when the power amplification unit 13 of embodiments of the present invention is operated according to the lubber-line that non-linear gain is interval.
Specifically, when power amplification unit 13 is operated under including tracing mode, the lubber-line interval according to non-linear gain is operated.As it is shown on figure 3, in the lubber-line in non-linear gain interval, the supply voltage of power amplification unit 13 changes along with the power of input signal (being the first baseband signal in embodiments of the present invention).
Therefore, when power amplification unit 13 is operated under envelope-tracking pattern, the supply voltage of power amplification unit 13 is set as the supply voltage corresponding with the power of the first baseband signal by control unit 16.Specifically, control unit 13 is according to described lubber-line, it is thus achieved that the supply voltage corresponding with the power of the first baseband signal, and then sets the supply voltage obtained to power amplification unit 13.
As mentioned above, when being operated under including tracing mode due to power amplification unit 13, the lubber-line interval according to non-linear gain is operated, and therefore inputs and linearly changes between the power of the output signal after the power of signal and power amplification, ACLR can be reduced, and power consumption can be reduced.
Specifically, in figure 3, calibration point A, B, C, D represent respectively, the input end signal of power amplification unit 13, output corresponding relation between signal, supply voltage.As it is shown on figure 3, owing to power amplification unit 13 is in non-linear gain region when the power of output end signal is bigger, calibration point A, B, C, D are likely to be not at straight line.
Such as, the electronic equipment 1 of embodiments of the present invention can launch multiple radio band (such as by antenna, GSM900 frequency range, B1 frequency range, B40 frequency range etc.) output signal, when second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13, calibration point A, B, C, D represent the input end signal in special frequency band (such as centrally located frequency band), output corresponding relation between signal, supply voltage.For another example, calibration point A, B, C, D respectively, under each supply voltage, the output end signal point relative to the gain reduction 5dB (compared with the gain in linear gain interval) of input end signal.
In embodiments of the present invention, when calibration point A, B, C, D are not at straight line, by calibration point A, B, C, D are fitted, thus being calibrated line.When calibration point A, B, C, D are in straight line, the straight line residing for calibration point A, B, C, D is lubber-line.Thus, when power amplification unit 13 is operated according to the lubber-line that non-linear gain is interval, the power (power of the first baseband signal) of input signal and the power exporting signal linearly change.
Being preferably, when power amplification unit 13 is operated under envelope-tracking pattern, the first baseband signal, when generating the second radiofrequency signal, is carried out digital pre-distortion process by input signal processing unit 12.Thus, when the supply voltage of power amplification unit 13 is set as the supply voltage corresponding with the power of the first baseband signal, the power of the first baseband signal and the power exporting signal linearly change.That is, in input signal processing unit 12, for instance after the first baseband signal is carried out digital pre-distortion process, then carry out frequency transformation, thus obtaining the second radiofrequency signal.
By the first baseband signal is carried out digital pre-distortion process such that it is able to compensate power amplification unit 13 and be in non-linear gain region when the power of output end signal is bigger and difference between the non-linear distortion caused, calibration point A, B, C, the D and the lubber-line that can compensate in Fig. 3.
Specifically, arrange digital pre-distortion process in parameter time, set according to calibration point A, B, C, D (gain etc. of calibration point A, B, C, D).Such as, when calibration point A, B, C, D represent the input end signal in special frequency band (such as centrally located frequency band), the output corresponding relation between signal, supply voltage, by suitably arranging the parameter in digital pre-distortion process such that it is able to compensate the difference between calibration point A, B, C, D and the lubber-line in Fig. 3.Thus, power amplification unit 13 is operated according to lubber-line in nonlinear area at special frequency band (such as centrally located frequency band), thus the power of the first baseband signal and the power exporting signal linearly change.
As mentioned above, in embodiments of the present invention, although the power of the second radiofrequency signal and the power exporting signal are nonlinear change (with reference to Fig. 2), but by the first baseband signal also being carried out digital pre-distortion process such that it is able to make the power of the first baseband signal (input signal) linearly change (with reference to Fig. 3) with the power of output signal.
In addition, when power amplification unit 13 is operated under envelope-tracking pattern, input signal processing unit 12 can also be simulated the process of predistortion etc. when generating the second radiofrequency signal, as long as power amplification unit 13 can be made to be operated according to lubber-line, thus the power of the first baseband signal and the power exporting signal linearly change.
As it has been described above, when the second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13, for special frequency band the above-mentioned lubber-line of matching (and then, for instance set the parameter during digital pre-distortion processes).Owing to the gain of power amplification unit 13 changes along with frequency range or temperature etc., therefore there is situation about cannot be operated under other frequency band according to lubber-line, thus causing that the power of the first baseband signal is nonlinear change with the power of output signal.Thus, cause non-linear distortion, cause that ACLR increases.
In view of the foregoing, it is preferably, the control unit 16 power according to the output signal detected by detection unit 15 and the difference of target power, accordingly, dynamically adjust the supply voltage of power amplification unit 13 with the dynamically adjustment of the power of the first baseband signal.
Therefore, in embodiments of the present invention, when the power of the first baseband signal is dynamically adjusted with the difference of target power by control unit 16 according to the power of output signal detected by detection unit 15, the supply voltage of power amplification unit 13 is dynamically adjusted simultaneously.Such as, control unit 16 is according to lubber-line, it is thus achieved that the supply voltage corresponding with the power of the first baseband signal after dynamically adjustment, and then sets the supply voltage obtained to power amplification unit 13.
Thus, even if the gain of power amplification unit 13 changes along with frequency range or temperature etc., owing to suitably adjusting the first baseband signal and supply voltage according to lubber-line, therefore, it is possible to guaranteed output amplifying unit is operated according to lubber-line all the time, thus the first baseband signal linearly changes with output signal.Thus, it can be avoided that produce non-linear distortion when launching the output signal of specific frequency band in the electronic device, the communication avoiding the electronic equipment to other produces interference, and then also is able to effectively reduce ACLR in matching in frequency band beyond the special frequency band of lubber-line.
Below, the control method being applied to electronic equipment of embodiments of the present invention is described with reference to Fig. 4.Fig. 4 indicates that the flow chart of the control method being applied to electronic equipment of embodiments of the present invention.
Control method shown in the flow chart of Fig. 4 can be applied to the electronic equipment 1 shown in Fig. 1.As it is shown in figure 1, electronic equipment 1 includes: baseband signal generates unit 11, input signal processing unit 12, power amplification unit 13, antenna element 14, detection unit 15 and control unit 16.
In step sl, control unit 16 arranges the power of the first baseband signal according to the target power of output signal.
Specifically, the control unit 16 gain according to the power amplification unit 13 power amplification unit 13 under special frequency band and specified temp, the power of the first baseband signal is set so that the output signal after carrying out power amplification by power amplification unit 13 becomes the target power of setting.
In step s 2, baseband signal generates unit 11 with the power of the first set baseband signal, generates the first baseband signal.
In step s3, the first baseband signal is processed and generates the second radiofrequency signal by input signal processing unit 12.
Specifically, the first baseband signal is carried out frequency transformation by input signal processing unit 12, thus generating the second radiofrequency signal of radio band.Such as, the electronic equipment 1 of embodiments of the present invention can launch multiple radio band (such as by antenna element, GSM900 frequency range, B1 frequency range, B40 frequency range etc.) output signal when, the second radiofrequency signal of the frequency band distributed the first base-band signal frequency being transformed in multiple radio band.Wherein, for instance the state according to electronic equipment 1 with the wireless channel of base station (not shown), the first baseband signal distribution is suitable frequency.
In step s 4, described second radiofrequency signal is carried out power amplification by power amplification unit 13, thus generating output signal.
Specifically, the electronic equipment 1 of embodiments of the present invention can launch multiple radio band (such as by antenna, GSM900 frequency range, B1 frequency range, B40 frequency range etc.) output signal when, the second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13.
In step s 5, the output signal after power amplification is launched by antenna element 14.Wherein, communication counterpart (such as base station) receives the output signal launched by antenna element 14, thus realizing the communication with electronic equipment 1.
The gain of power amplification unit 13 changes along with frequency range or temperature etc., and when the power of therefore the first baseband signal as set above, the power of output signal exists difference with target power sometimes.Therefore, by the process of step S6 and step S7 so that the power of output signal is identical with target power.
In step s 6, the power of detection unit 15 detection output signal.In the step s 7, control unit 16 exports the power of signal and the difference of target power according to what detected by detection unit 15, and the power of the first baseband signal is dynamically adjusted.
Wherein, when the power of output signal is less than target power, suitably increase the power of the first baseband signal according to both differences, equally, when the power of output signal is less than target power, suitably reduce the power of the first baseband signal according to both differences.By the power of the first baseband signal is dynamically adjusted, until the power of the output signal after power amplification becomes the target power of setting.
Control method according to the embodiment of the present invention, the power of signal and the difference of target power is exported according to what detected by detection unit 15 by control unit 16, the power of the first baseband signal is dynamically adjusted, it is thus possible to compensate the deviation of the power of the output signal that power amplification unit 13 causes because of frequency range difference or variations in temperature etc., thus launching output signal with target power.
As in figure 2 it is shown, when power amplification unit 13 works in linear gain region, owing to conversion efficiency is low, cause that power consumption increases.Additionally, power amplification unit 13 is when non-linear gain regional work, owing to input end signal and output end signal are nonlinear change, therefore produce non-linear distortion.At power amplification unit 13 when non-linear gain regional work, ACLR (represents the power ratio of the Power leakage the exporting signal numerical value to the first or second adjacent channel carrier power and output signal) and increases.
In embodiments of the present invention, as it is shown on figure 3, power amplification unit 13 is operated according to the lubber-line that non-linear gain is interval.Specifically, when power amplification unit 13 is operated under including tracing mode, the lubber-line interval according to non-linear gain is operated.Wherein, in the lubber-line that non-linear gain is interval, the supply voltage of power amplification unit 13 changes along with the power of input signal (being the first baseband signal in embodiments of the present invention).
Therefore, it is preferably, the control method of embodiments of the present invention also includes: when power amplification unit 13 is operated under envelope-tracking pattern, and the supply voltage of power amplification unit 13 is set as the supply voltage corresponding with the power of the first baseband signal by control unit 16.Specifically, control unit 13 is according to described lubber-line, it is thus achieved that the supply voltage corresponding with the power of the first baseband signal, and then sets the supply voltage obtained to power amplification unit 13.
In embodiments of the present invention, when calibration point A, B, C, D are not at straight line, by calibration point A, B, C, D are fitted, thus being calibrated line.When calibration point A, B, C, D are in straight line, the straight line residing for calibration point A, B, C, D is lubber-line.Thus, when power amplification unit 13 is operated according to the lubber-line that non-linear gain is interval, the power (power of the first baseband signal) of input signal and the power exporting signal linearly change.
It is preferably, when first baseband signal is processed and generates the second radiofrequency signal by input signal processing unit 12 in step s3, when power amplification unit 13 is operated under envelope-tracking pattern, the first baseband signal is carried out digital pre-distortion process when generating the second radiofrequency signal by input signal processing unit 12.Thus when the supply voltage of power amplification unit 13 is set as the supply voltage corresponding with the power of the first baseband signal, the power of the first baseband signal and the power exporting signal linearly change.That is, in input signal processing unit 12, for instance after the first baseband signal is carried out digital pre-distortion process, then carry out frequency transformation, thus obtaining the second radiofrequency signal.
By the first baseband signal is carried out digital pre-distortion process such that it is able to compensate power amplification unit 13 and be in non-linear gain region when the power of output end signal is bigger and difference between the non-linear distortion caused, calibration point A, B, C, the D and the lubber-line that can compensate in Fig. 3.
Specifically, arrange digital pre-distortion process in parameter time, set according to calibration point A, B, C, D (gain etc. of calibration point A, B, C, D).Such as, when calibration point A, B, C, D represent the input end signal in special frequency band (such as centrally located frequency band), the output corresponding relation between signal, supply voltage, by suitably arranging the parameter in digital pre-distortion process such that it is able to compensate the difference between calibration point A, B, C, D and the lubber-line in Fig. 3.Thus, power amplification unit 13 is operated according to lubber-line in nonlinear area at special frequency band (such as centrally located frequency band), thus the power of the first baseband signal and the power exporting signal linearly change.
When second radiofrequency signal of multiple radio band can be carried out power amplification by power amplification unit 13, for special frequency band the above-mentioned lubber-line of matching (and then, for instance set digital pre-distortion process in parameter).Owing to the gain of power amplification unit 13 changes along with frequency range or temperature etc., therefore there is situation about cannot be operated under other frequency band according to lubber-line, thus causing that the power of the first baseband signal is nonlinear change with the power of output signal.Thus, cause non-linear distortion, cause that ACLR increases.
In view of the foregoing, it is preferably, the control method of embodiments of the present invention also includes: control unit 16 exports the power of signal and the difference of target power according to what detected by detection unit 15, accordingly, the supply voltage of power amplification unit 13 is dynamically adjusted with the dynamically adjustment of the power of the first baseband signal.Such as, control unit 16 is according to lubber-line, it is thus achieved that the supply voltage corresponding with the power of the first signal after dynamically adjustment, and then sets the supply voltage obtained to power amplification unit 13.
Thus, even if the gain of power amplification unit 13 changes along with frequency range or temperature etc., owing to suitably adjusting the first baseband signal and supply voltage according to lubber-line, therefore, it is possible to guaranteed output amplifying unit is operated according to lubber-line all the time, thus the first baseband signal linearly changes with output signal.Thus, it can be avoided that produce non-linear distortion when launching the output signal of specific frequency band in the electronic device, the communication avoiding the electronic equipment to other produces interference, and then also is able to effectively reduce ACLR in matching in frequency band beyond the special frequency band of lubber-line.
Those of ordinary skill in the art are it is to be appreciated that be combined in unit and the step that embodiments of the present invention describe, it is possible to electronic hardware, computer software or the two be implemented in combination in.And software module can be placed in any form of computer-readable storage medium.In order to clearly demonstrate the interchangeability of hardware and software, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Those skilled in the art specifically can should be used for using different methods to realize described function to each, but this realization is it is not considered that beyond the scope of this invention.
Each embodiment of the present invention described in detail above.But, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention, these embodiments can be carried out various amendment, combination or sub-portfolio, and such amendment should fall within the scope of the present invention.
Claims (10)
1. an electronic equipment, including:
Baseband signal generates unit, and configuration generates the first baseband signal；
Input signal processing unit, the first baseband signal is processed and generates the second radiofrequency signal by configuration；
Power amplification unit, described second radiofrequency signal is carried out power amplification by configuration, thus generating output signal；
Antenna element, the described output signal after power amplification is launched by configuration；
Detection unit, configuration detects the power of described output signal；And
Control unit, configure the target power according to described output signal and the power of described first baseband signal is set, and the power according to the described output signal detected by described detection unit and the difference of described target power, dynamically adjust the power of described first baseband signal.
2. electronic equipment as claimed in claim 1, wherein,
When described power amplification unit is operated under envelope-tracking pattern, the supply voltage of described power amplification unit is set as the supply voltage corresponding with the power of described first baseband signal by described control unit.
3. electronic equipment as claimed in claim 2, wherein,
When described power amplification unit is operated under envelope-tracking pattern, described input signal processing unit is when generating described second radiofrequency signal, described first baseband signal is carried out digital pre-distortion process, making when the supply voltage of described power amplification unit is set as the supply voltage corresponding with the power of described first baseband signal, the power of the power of described first baseband signal and described output signal linearly changes.
4. electronic equipment as claimed in claim 3, wherein,
Described second radiofrequency signal of multiple frequency ranges is carried out power amplification by described power amplification unit,
Gain according to described power amplification unit corresponding with the power of described second radiofrequency signal under special frequency channel, arranges the parameter during described digital pre-distortion processes.
5. electronic equipment as claimed in claim 2, wherein,
The difference of the described control unit power according to the described output signal detected by described detection unit and described target power, accordingly, the supply voltage of described power amplification unit is dynamically adjusted with the dynamically adjustment of the power of described first baseband signal.
6. a control method, is applied to electronic equipment, and described electronic equipment includes power amplification unit, and described control method includes:
Target power according to output signal arranges the power of the first baseband signal；
With the power of the first set baseband signal, generate described first baseband signal；
Described first baseband signal is processed and generates the second radiofrequency signal；
By described power amplification unit, described second radiofrequency signal is carried out power amplification, thus generating output signal；
Described output signal after power amplification is launched；
Detect the power of described output signal；And
Power according to the described output signal detected and the difference of described target power, dynamically adjust the power of described first baseband signal.
7. control method as claimed in claim 6, including:
When described power amplification unit is operated under envelope-tracking pattern, the supply voltage of described power amplification unit is set as the supply voltage corresponding with the power of described first baseband signal.
8. control method as claimed in claim 7, wherein,
Described first baseband signal is processed and generates in the step of the second radiofrequency signal,
When described power amplification unit is operated under envelope-tracking pattern, described first baseband signal is carried out digital pre-distortion process, making when the supply voltage of described power amplification unit is set as the supply voltage corresponding with the power of described first baseband signal, the power of the power of described first baseband signal and described output signal linearly changes.
9. control method as claimed in claim 8, wherein,
Described second radiofrequency signal of multiple frequency ranges is carried out power amplification by described power amplification unit,
Gain according to described power amplification unit corresponding with the power of described second radiofrequency signal under special frequency channel, arranges the parameter during described digital pre-distortion processes.
10. control method as claimed in claim 7, including:
Power according to the described output signal detected and the difference of described target power, accordingly, dynamically adjust the supply voltage of described power amplification unit with the dynamically adjustment of the power of described first baseband signal.
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