CN102244500B - Method and device for controlling power supplying voltage of power consumption device in emitting passage and emitting system - Google Patents
Method and device for controlling power supplying voltage of power consumption device in emitting passage and emitting system Download PDFInfo
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Abstract
The embodiment of the invention provides a method and device for controlling power supplying voltage of a power consumption device in an emitting passage and an emitting system, relating to the technical field of communication and solving the technical problem that the power consumption of an emitting passage in the prior art is higher. The method for controlling power supplying voltage of the power consumption device in the emitting passage comprises the steps of: sensing the amplitude of the I/O signals to be emitted or sensing the amplitude of the radio frequency signals which are obtained by carrying out digital-to-analog conversion on the I/O signals; and boosting the voltage output to a grid of a radio frequency power amplifier for amplifying the radio frequency signal power when the amplitude is enlarged and reducing the voltage which is output to the radio frequency power amplifier when the amplitude is reduced. The device for controlling the power supplying voltage of the power consumption device in the emitting passage comprises a sensing module and a controlling module. The emitting system comprises the emitting passage and the device for controlling the power supplying voltage of the power consumption device in the emitting passage, disclosed by the invention. The method and device disclosed by the invention are used for reducing power consumption brought about by the emitting passage part of the complete unit.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of control power consuming devices supply power voltage in transmitting path method, a kind ofly control the device of power consuming devices supply power voltage in transmitting path and a kind of emission system that the device of power consuming devices supply power voltage in this control transmitting path is set.
Background technology
Along with the develop rapidly of the communication technology, TDD (Time Division Duplexing, time division duplex) and FDD (Frequency Division Duplexing, Frequency Division Duplexing (FDD)) technology are all widely applied in a communications system.
Existing communication system, comprises transmitting path and receiving path, and transmitting path is used for by the power consuming devices in it to receiving path wireless signal emission, and receiving path is used for the wireless signal launched by the power consuming devices reception transmitting path in it.
With TDD-LTE (the Long Term Evolution of existing application TDD technology, Long Term Evolution) system is example, as shown in Figure 1, power consuming devices in the transmitting path of existing TDD-LTE system at least comprises D/A converter module 7, modulation module 8, radio-frequency power amplifier ((Radio Frequency PowerAmplifier usually, be abbreviated as RF PA) 9 and antenna 10, wherein:
D/A converter module 7, for being converted to the intermediate frequency i/q signal of analog signal format by I/Q (In-phase/Quadrature, the orthogonal) signal of digital signals format;
Modulation module 8, for being modulated to the radiofrequency signal of high frequency by the intermediate frequency i/q signal of analog signal format;
Radio-frequency power amplifier 9, for amplifying the power of radiofrequency signal, and is sent to antenna 10 after the power power of radiofrequency signal and amplitude are amplified to required for antenna 10 and amplitude;
Radio-frequency power amplifier 9, comprises gain adjustment module 91 and final stage radio-frequency power amplifier 92;
Gain adjustment module 91, for the grid by inputting final stage radio-frequency power amplifier 92 after the power amplification of radiofrequency signal to the power of final stage radio-frequency power amplifier 92;
Final stage radio-frequency power amplifier 92, exports antenna 10 to from its drain electrode after the power of radiofrequency signal and amplitude being amplified to the power of antenna 10 and amplitude;
Antenna 10, for launching radiofrequency signal with wireless signal form.
Ensure that radio-frequency power amplifier 9 normally works, need the grid for radio-frequency power amplifier 9 and drain electrode power supply, be the grid of radio-frequency power amplifier 9 and the equal input voltage that drains, thus make radio-frequency power amplifier 9 be in magnifying state, for final stage radio-frequency power amplifier 92, input to the voltage of the voltage of final stage radio-frequency power amplifier 92 grid and drain electrode larger time, its drain electrode power output is larger, otherwise, input to the voltage of the voltage of final stage radio-frequency power amplifier 92 grid and drain electrode less time, its drain electrode power output is also less.When in prior art, transmitting path is in starting state, the voltage inputing to final stage radio-frequency power amplifier 92 grid is a constant magnitude of voltage Vcc, and the voltage inputing to gain adjustment module 91 grid is a constant magnitude of voltage Vcc1.
The radiofrequency signal size requirements to final stage radio-frequency power amplifier 92 power output converted due to the i/q signal of the digital signals format of different amplitude is different.Those skilled in the art contemplate and arrange an analog control circuit in transmitting paths for this reason, by the voltage swing of analog control circuit induction radiofrequency signal, and carry out the voltage of control inputs to the drain electrode of final stage radio-frequency power amplifier 92 according to the voltage swing of radiofrequency signal, and then reach the object of saving power consumption.
As shown in Figure 2, existing analog control circuit, comprise coupler (Coupler) 81, envelope detected module (Envelope detector) 82, Postponement module (Delay line) 5 and voltage conversion chip (DC-DC converter) 83, wherein:
Coupler 81, for needing the radiofrequency signal of launching to be coupled transmitting path, and generates the coupled signal of analog signal format;
Coupler 81, also for the coupled signal input delay module 5 by analog signal format;
Envelope detected module 82, for the range value according to coupled signal, generates amplitude envelops voltage.
Voltage conversion chip 83, for carrying out voltage amplification to amplitude envelops voltage, and exports the drain electrode of final stage radio-frequency power amplifier 92 to by the amplitude envelops voltage after amplification;
Postponement module 5, postpones for radio frequency signal, and the amplitude envelops voltage synchronous that guarantee radiofrequency signal and voltage conversion chip 83 export drain electrode to exports final stage radio-frequency power amplifier 92 to.The present inventor finds, at least there is following technical problem in prior art: in prior art, only real-time adjustment is carried out to the drain voltage inputing to final stage radio-frequency power amplifier 92 as depicted in figs. 1 and 2, but any adjustment is not made to the voltage of the grid inputing to final stage radio-frequency power amplifier 92, the voltage inputing to the grid of final stage radio-frequency power amplifier 92 is the voltage vcc of a voltage value constant always, like this, the grid being continuously final stage radio-frequency power amplifier 92 when transmitting path is in starting state is powered and the power consumption of transmitting path can be caused larger.
Summary of the invention
Embodiments provide a kind of method, device and a kind of emission system that control power consuming devices supply power voltage in transmitting path, solve prior art exist transmitting path in running order time be continuously radio-frequency power amplifier grid power and cause the technical problem that the power consumption of transmitting path is larger.
The method of power consuming devices supply power voltage in this control transmitting path, comprising: respond to the amplitude size of the i/q signal that needs are launched or respond to by the amplitude size of the radiofrequency signal after described i/q signal digital-to-analogue conversion; Raising the voltage of the radio-frequency power amplifier grid exported to for amplifying described RF signal power when described amplitude increases, reducing the voltage exporting described radio-frequency power amplifier grid to when described amplitude reduces.
Further, described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module, the method of power consuming devices supply power voltage in described control transmitting path, also comprise: raise the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude increases, reduce the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude reduces.Further, respond to the method for the amplitude size of described i/q signal, comprising: when the signal format of the described i/q signal that needs are launched is nonnumeric signal format, described i/q signal is all treated to digital signals format; Extract the amplitude envelops value of the described i/q signal of digital signals format, described amplitude envelops value increases with the increase of described amplitude, and reduces with the reduction of described amplitude.
Further, before the amplitude envelops value of described i/q signal extracting digital signals format, respond to the method for the amplitude size of described i/q signal, also comprise: interpolation and/or filtering process are carried out to the described i/q signal of digital signals format; And/or the method for power consuming devices supply power voltage in this control transmitting path, also comprises: stop powering at least one power consuming devices in described transmitting path when the described i/q signal not needing to launch or described radiofrequency signal input transmitting path;
Described power consuming devices at least comprises described radio-frequency power amplifier.
Further, extract the method for the amplitude envelops value of the described i/q signal of digital signals format, comprise the following steps:
Bring the range value of I signal described in the described i/q signal of digital signals format and the range value of described Q signal into formula:
calculate described amplitude envelops value, in described formula:
A is described amplitude envelops value;
The range value of I signal described in the described i/q signal that I is digital signals format;
The range value of Q signal described in the described i/q signal that Q is digital signals format.
Further, extract the method for the amplitude envelops value of the described i/q signal of digital signals format, further comprising the steps of:
When the described amplitude envelops value gone out according to described formulae discovery is greater than N numerical value, and when being not more than N+1 numerical value, extract N+1 numerical value as described amplitude envelops value; Wherein:
Described N is natural number, and described N+1 numerical value is greater than described N numerical value, and described N numerical value and described N+1 numerical value are the numerical value in the described amplitude envelops value drawn according to described formulae discovery.
Further, extract the method for the amplitude envelops of the described i/q signal of digital signals format, further comprising the steps of:
By the range value of the range value of described I signal, described Q signal and be stored in look-up table according to the described amplitude envelops value that the range value of described I signal, the range value of described Q signal extract;
In described look-up table, described amplitude envelops value is found out according to the range value of described I signal and the range value of described Q signal.
Further, raise the voltage exporting described radio-frequency power amplifier grid to when described amplitude increases, reduce the method exporting the voltage of described radio-frequency power amplifier grid to when described amplitude reduces, comprise the following steps:
Digital-to-analogue conversion is carried out to described amplitude envelops value;
The voltage of analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to.
Further, before digital-to-analogue conversion is carried out to described amplitude envelops value, further comprising the steps of:
The gate voltage curve drawing described radio-frequency power amplifier is detected in advance on described radio-frequency power amplifier;
When detecting the grid input constant voltage drawn described radio-frequency power amplifier in advance in described transmitting path, the corresponding relation between the i/q signal of different amplitude and the power output of described radio-frequency power amplifier;
The gate voltage values linearly changed with described amplitude envelops value required for described radio-frequency power amplifier is calculated according to the amplitude of described i/q signal, described gate voltage curve, described corresponding relation, and utilize the gate voltage values that linearly changes with described amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the described radio-frequency power amplifier that described amplitude envelops value detects, draw penalty constant;
By the mode described amplitude envelops value be multiplied with described penalty constant or be added, Amplitude Compensation is carried out to described amplitude envelops value.
Further, after the step of Amplitude Compensation is carried out to described amplitude envelops value, before digital-to-analogue conversion is carried out to described amplitude envelops value, further comprising the steps of:
When voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than described radio-frequency power amplifier, heighten described amplitude envelops value with unified ratio;
Or, when the figure place of the described amplitude envelops value of binary format exceeds the maximum number of digits that the D/A conversion unit for carrying out digital-to-analogue conversion to described amplitude envelops value can identify, with amplitude envelops value described in unified scale smaller;
Before the voltage of analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to, further comprising the steps of:
Image component in the voltage of analog signal format described in filtering;
When voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than described radio-frequency power amplifier, the magnitude of voltage of described analog signal format is amplified.
Further, the method for power consuming devices supply power voltage in described control transmitting path, further comprising the steps of:
Detect after described i/q signal or described radiofrequency signal input described transmitting path, the grid that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage and described radio-frequency power amplifier receives the time of described radiofrequency signal, and calculate after described i/q signal or described radiofrequency signal input described transmitting path, the time difference between the time that the grid of time and described radio-frequency power amplifier that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage receives described radiofrequency signal;
According to the described time difference, described i/q signal or described radiofrequency signal are postponed, make the voltage of the grid exporting described radio-frequency power amplifier to and/or the voltage of drain electrode and described radiofrequency signal synchronously arrive described radio-frequency power amplifier;
In the control transmitting path that the embodiment of the present invention provides, the device of power consuming devices supply power voltage, comprises induction module and control module, wherein:
Described induction module, for responding to the amplitude size of the i/q signal needing transmitting or responding to by the amplitude size of the radiofrequency signal after described i/q signal digital-to-analogue conversion;
Described control module, for raising the voltage of the radio-frequency power amplifier grid exported to for amplifying described RF signal power when described amplitude increases, reduces the voltage exporting described radio-frequency power amplifier grid to when described amplitude reduces.
Further, described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module, wherein:
Described control module, also for raising the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude increases, reduces the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude reduces.
Further, described induction module comprises data processing unit and envelope extraction unit, wherein:
Described data processing unit, for when the signal format needing the described i/q signal launched is nonnumeric signal format, is all treated to digital signals format by described i/q signal;
Described envelope extraction unit, for extracting the amplitude envelops value of the described i/q signal of digital signals format, described amplitude envelops value increases with the increase of described amplitude, and reduces with the reduction of described amplitude.
Further, described induction module, also comprises digital signal processing unit, wherein:
Described digital signal processing unit, for carrying out interpolation and/or filtering process to the described i/q signal of digital signals format.
Further, described envelope extraction unit, also comprises computation subunit, and described computation subunit is used for bringing the range value of I signal described in the described i/q signal of digital signals format and the range value of described Q signal into formula:
calculate described amplitude envelops value, in described formula:
A is described amplitude envelops value;
The range value of I signal described in the described i/q signal that I is digital signals format;
The range value of Q signal described in the described i/q signal that Q is digital signals format.
Further, described envelope extraction unit, also comprises classification subelement, and the described amplitude envelops value that described classification subelement is used for when going out according to described formulae discovery is greater than N numerical value, and when being not more than N+1 numerical value, extract N+1 numerical value as described amplitude envelops value; Wherein:
Described N is natural number, and described N+1 numerical value is greater than described N numerical value, and described N numerical value and described N+1 numerical value are the numerical value in the described amplitude envelops value drawn according to described formulae discovery;
And/or described envelope extraction unit is Matlab or Excel;
And/or described digital signal processing unit is FPGA.
Further, described envelope extraction unit, also comprises storing sub-units and searches subelement, wherein:
Described storing sub-units, for by the range value of the range value of described I signal, described Q signal and be stored in look-up table according to the described amplitude envelops value that the range value of described I signal, the range value of described Q signal extract;
Describedly search subelement, for finding out described amplitude envelops value according to the range value of described I signal and the range value of described Q signal in described look-up table.
Further, described control module, comprises D/A conversion unit and voltage output unit, wherein:
Described D/A conversion unit, for carrying out digital-to-analogue conversion to described amplitude envelops value;
Described voltage output unit, the voltage for analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to.
Further, described induction module, also comprises the first detecting unit, the second detecting unit, constant computation unit and envelope cancellation unit, wherein:
Described first detecting unit, for detecting the gate voltage curve drawing described radio-frequency power amplifier in advance on described radio-frequency power amplifier;
Described second detecting unit, when in described transmitting path, detection draws the grid input constant voltage to described radio-frequency power amplifier in advance, the corresponding relation between the i/q signal of different amplitude and the power output of described radio-frequency power amplifier;
Described constant computation unit, the gate voltage values linearly changed with described amplitude envelops value of described radio-frequency power amplifier is calculated for the amplitude according to described i/q signal, described gate voltage curve, described corresponding relation, and utilize the gate voltage values that linearly changes with described amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the described radio-frequency power amplifier that described amplitude envelops value detects, draw penalty constant;
Described envelope cancellation unit, for carrying out Amplitude Compensation by the mode described amplitude envelops value be multiplied with described penalty constant or be added to described amplitude envelops value.
Further, described induction module also comprises amplitude adjusting elements, wherein:
Described amplitude adjusting elements, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of described radio-frequency power amplifier, heightens described amplitude envelops value with unified ratio; Or,
Described amplitude adjusting elements, when figure place for the described amplitude envelops value when binary format exceeds the maximum number of digits that the described D/A conversion unit for carrying out digital-to-analogue conversion to described amplitude envelops value can identify, with amplitude envelops value described in unified scale smaller;
Described control module also comprises filter unit and/or amplitude amplifying unit, wherein:
Described filter unit, for the image component in the voltage of analog signal format described in filtering;
Described amplitude amplifying unit, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of described radio-frequency power amplifier, amplifies the magnitude of voltage of described analog signal format.
Further, in the control transmitting path that the embodiment of the present invention provides, the device of power consuming devices supply power voltage also comprises time determination module and Postponement module, wherein:
Described time determination module, for detecting after described i/q signal or described radiofrequency signal input described transmitting path, the grid that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage and described radio-frequency power amplifier receives the time of described radiofrequency signal, and calculate after described i/q signal or described radiofrequency signal input described transmitting path, the time difference between the time that the grid of time and described radio-frequency power amplifier that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage receives described radiofrequency signal;
Described Postponement module, for postponing described i/q signal or described radiofrequency signal according to the described time difference, the voltage of the grid exporting described radio-frequency power amplifier to and/or the voltage of drain electrode and described radiofrequency signal is made synchronously to arrive described radio-frequency power amplifier.
And/or described control module also comprises voltage switching unit, wherein:
Described voltage switching unit, for stopping powering at least one power consuming devices in described transmitting path when the described i/q signal not needing to launch or described radiofrequency signal input transmitting path, described power consuming devices at least comprises described radio-frequency power amplifier and described amplitude amplifying unit;
And/or described amplitude amplifying unit is operational amplifier; And/or described filter unit is LC low pass filter.
The emission system that the embodiment of the present invention provides, comprises the device of power consuming devices supply power voltage in the control transmitting path that transmitting path and the invention described above embodiment provide, wherein:
Power consuming devices in described transmitting path comprises D/A converter module, modulation module and radio-frequency power amplifier described at least one, and described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module,
Described D/A converter module, for being all converted to analog signal format by the described i/q signal of digital signals format;
Described modulation module, for being modulated to radiofrequency signal by the described i/q signal of analog signal format;
Described radio-frequency power amplifier, for amplifying the power of described radiofrequency signal;
Described emission system is TDD emission system or FDD emission system.
Further, described transmitting path is base station or terminal; And/or described modulation module is frequency mixer; And/or described gain adjustment module comprises at least one driving amplifier and at least one programmable gain amplifier device, wherein:
Described driving amplifier, inputs to described radio-frequency power amplifier after being amplified with specified multiple by the power of described radiofrequency signal;
Described programmable gain amplifier device, for when the power of described radiofrequency signal is unstable, carries out power back-off to described radiofrequency signal, and the power of the described radiofrequency signal after described driving amplifier is amplified meets the power required for described radio-frequency power amplifier;
And/or described final stage radio-frequency power amplifier comprises at least one main amplifier and at least one is from amplifier, described transmitting path also comprises shunt module and closes road module, wherein:
Described shunt module, inputs to described main amplifier and described from amplifier respectively for the described radiofrequency signal after described gain adjustment module being amplified;
Described main amplifier and described from amplifier, all for amplifying power and the amplitude of described radiofrequency signal;
The input power value of described main amplifier and described described radiofrequency signal required when opening from amplifier varies in size;
Described conjunction road module, for by described main amplifier and amplify from amplifier and export described antenna behind the described radiofrequency signal conjunction road of the output that drain separately from it.
Compared with prior art, the arbitrary technical scheme tool in technique scheme provided by the present invention has the following advantages:
Due to the amplitude size needing the i/q signal launched or the amplitude size first responding to the radiofrequency signal after by i/q signal digital-to-analogue conversion first can be responded in the embodiment of the present invention, then the voltage of the radio-frequency power amplifier grid exported to for amplifying described RF signal power is raised when amplitude increases, reduce the voltage exporting radio-frequency power amplifier grid to when amplitude reduces, thus the voltage swing of the grid exporting at least one radio-frequency power amplifier (such as final stage radio-frequency power amplifier) to can be controlled according to amplitude size in real time;
Simultaneously, input to the i/q signal of the arbitrary size amplitude of radio-frequency power amplifier because prior art is guarantee or all can be amplified normally by the power of the radiofrequency signal after i/q signal digital-to-analogue conversion, its voltage being continuously the voltage value constant of the grid input of radio-frequency power amplifier is larger, so compared with the voltage of the voltage value constant inputted with the grid of the radio-frequency power amplifier be continuously in prior art in transmitting path, in the present invention when needing the amplitude of the i/q signal launched to diminish or diminished by the amplitude of the radiofrequency signal after i/q signal digital-to-analogue conversion, the voltage exporting the grid of radio-frequency power amplifier to also can diminish, the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier be continuously in transmitting path will inevitably be less than in prior art after diminishing, when becoming large when needing the amplitude of the i/q signal launched in the embodiment of the present invention or become large by the amplitude of the radiofrequency signal after i/q signal digital-to-analogue conversion, even if changes in amplitude is to maximum, the voltage exporting the grid of radio-frequency power amplifier to only can equal to be continuously in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier in transmitting path and can not be greater than in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier be continuously in transmitting path,
As can be seen here, the voltage exporting the grid of radio-frequency power amplifier to due to the most of the time in the embodiment of the present invention is all less than in prior art the voltage of the voltage value constant of the grid input being continuously radio-frequency power amplifier, so the power consumption that in the embodiment of the present invention, the voltage of the grid input of radio frequency power amplifier causes is less, and then the power consumption of radio-frequency power amplifier and even transmitting path is also less, so solve prior art exist transmitting path in running order time be continuously radio-frequency power amplifier grid power and cause the technical problem that the power consumption of transmitting path is larger.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the chief component of transmitting path in prior art in TDD-LTE system;
Fig. 2 is the schematic diagram of the annexation in prior art between analog control circuit and transmitting path;
The schematic flow sheet of a kind of execution mode of the method for power consuming devices supply power voltage in the control transmitting path that Fig. 3 provides for the inventive method embodiment 1;
The schematic diagram of a kind of concrete implementing procedure of the method for power consuming devices supply power voltage in the control transmitting path that Fig. 4 provides for the embodiment of the inventive method shown in Fig. 31;
The schematic flow sheet of another execution mode of the method for power consuming devices supply power voltage in the control transmitting path that Fig. 5 provides for the inventive method embodiment 1;
The configuration schematic diagram of the radio frames that Fig. 6 provides for the inventive method embodiment 1;
The schematic flow sheet of the method for power consuming devices supply power voltage in the control transmitting path that Fig. 7 provides for the inventive method embodiment 2;
The schematic flow sheet of the preferred implementation of the method for power consuming devices supply power voltage in the control transmitting path that Fig. 8 provides for the inventive method embodiment 2;
The schematic diagram of a kind of execution mode of the emission system of the device of power consuming devices supply power voltage in the control transmitting path that Fig. 9 provides for application apparatus of the present invention embodiment 1;
The schematic diagram of another execution mode of the emission system of the device of power consuming devices supply power voltage in the control transmitting path that Figure 10 provides for application apparatus of the present invention embodiment 1;
In the control transmitting path that Figure 11 provides for apparatus of the present invention embodiment 1 power consuming devices supply power voltage device in the internal portions schematic diagram of induction module and control module;
The schematic diagram of the emission system of the device of power consuming devices supply power voltage in the control transmitting path that Figure 12 provides for application apparatus of the present invention embodiment 2;
The schematic diagram of the emission system of a kind of embodiment of the device of power consuming devices supply power voltage in the control transmitting path that Figure 13 provides for application apparatus of the present invention embodiment 2.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide on a kind of low in energy consumption, hardware easily realize, device selects difficulty little, and in the higher control transmitting path of system effectiveness power consuming devices supply power voltage method, control the device of power consuming devices supply power voltage in transmitting path and the emission system of device of power consuming devices supply power voltage in this control transmitting path be set.
Embodiment of the method 1:
As shown in Figure 3, the method for power consuming devices supply power voltage in the control transmitting path that the embodiment of the present invention provides, comprises the following steps:
The amplitude size of the i/q signal that S1, induction needs are launched;
S2, raise the voltage exporting radio-frequency power amplifier grid for amplifying RF signal power to when amplitude increases, when amplitude reduces, reduction exports the voltage of radio-frequency power amplifier grid to.
Due to the amplitude size needing the i/q signal launched first can be responded in the embodiment of the present invention, then the voltage of the radio-frequency power amplifier grid exported to for amplifying RF signal power is raised when amplitude increases, reduce the voltage exporting radio-frequency power amplifier grid to when amplitude reduces, thus the voltage swing of the grid exporting at least one radio-frequency power amplifier (such as final stage radio-frequency power amplifier) to can be controlled according to amplitude size in real time;
Simultaneously, because prior art is ensure that the power inputing to the i/q signal of the arbitrary size amplitude of radio-frequency power amplifier all can be amplified normally, its voltage being continuously the voltage value constant of the grid input of radio-frequency power amplifier is larger, so compared with the voltage of the voltage value constant inputted with the grid of the radio-frequency power amplifier be continuously in prior art in transmitting path, in the present invention when needing the amplitude of the i/q signal launched to diminish, the voltage exporting the grid of radio-frequency power amplifier to also can diminish, the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier be continuously in transmitting path will inevitably be less than in prior art after diminishing, when needing the amplitude of the i/q signal launched to become large in the embodiment of the present invention, even if changes in amplitude is to maximum, the voltage exporting the grid of radio-frequency power amplifier to only can equal to be continuously in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier in transmitting path and can not be greater than in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier be continuously in transmitting path,
As can be seen here, the voltage exporting the grid of radio-frequency power amplifier to due to the most of the time in the embodiment of the present invention is all less than in prior art the voltage of the voltage value constant of the grid input being continuously radio-frequency power amplifier, so the power consumption that in the embodiment of the present invention, the voltage of the grid input of radio frequency power amplifier causes is less, and then the power consumption of radio-frequency power amplifier and even transmitting path is also less, so solve prior art exist transmitting path in running order time be continuously radio-frequency power amplifier grid power and cause the technical problem that the power consumption of transmitting path is larger.
As shown in Figure 5, in the embodiment of the present invention, radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module, controls the method for power consuming devices supply power voltage in transmitting path, further comprising the steps of:
S3, when amplitude increases raise export to radio-frequency power amplifier drain electrode voltage, when amplitude reduces reduce export to radio-frequency power amplifier drain voltage.
The method of the voltage of radio-frequency power amplifier grid is exported in like manner with control, because the power output of final stage radio-frequency power amplifier and gain adjustment module all increases in company with the increase of the input voltage of its grid and drain electrode, so when the amplitude size of the i/q signal that the drain electrode of gain adjustment module and the voltage of final stage radio-frequency power amplifier drain electrode are launched with the need changes, when controlling to export to the voltage swing of the drain electrode of at least one gain adjustment module and/or grid in real time according to amplitude size, the power consumption of transmitting path can be reduced further.
When there is multiple radio-frequency power amplifier in transmitting path, voltage swing required for its grid of different radio-frequency power amplifiers and drain electrode is different, so need in the present embodiment to input different voltage respectively to the grid of different radio-frequency power amplifiers or drain electrode respectively, simultaneously, drain voltage due to same radio-frequency power amplifier must be greater than its grid voltage could realize power amplification, so also different voltage must be inputted respectively to the grid of same radio-frequency power amplifier and its drain electrode, certainly, the voltage that also can only make to export to the grid of wherein a part of radio-frequency power amplifier in the present embodiment changes with amplitude size, the voltage of the drain electrode exporting wherein another part radio-frequency power amplifier to is only made to change with amplitude size.
Because in the control transmitting path that the invention described above embodiment provides, the method for power consuming devices supply power voltage both may be used for the voltage of real-time control inputs to radio-frequency power amplifier 9 grid, also may be used for the voltage controlling radio-frequency power amplifier 9 drain electrode in real time, so in the control transmitting path that ought only use the invention described above embodiment to provide the method for power consuming devices supply power voltage for real-time control inputs to the voltage of radio-frequency power amplifier 9 grid, and when controlling the voltage of radio-frequency power amplifier 9 drain electrode time unreal, the voltage that radio-frequency power amplifier 9 drains can input the voltage of a voltage value constant, otherwise, when the voltage that the method for power consuming devices supply power voltage in the control transmitting path only using the invention described above embodiment to provide drains to radio-frequency power amplifier 9 for real-time control inputs, and when controlling the voltage of radio-frequency power amplifier 9 grid time unreal, the voltage of radio-frequency power amplifier 9 grid can input the voltage of a voltage value constant.
As shown in Figure 4, respond to the method for the amplitude size of i/q signal in the present embodiment, comprise the following steps:
S11, when the signal format of i/q signal needing to launch is nonnumeric signal format, i/q signal is all treated to digital signals format;
The amplitude envelops value of the i/q signal of S12, extraction digital signals format, amplitude envelops value increases with the increase of amplitude, and reduces with the reduction of amplitude.
The signal launched required for usual transmitting path is that base band sends, the signal that base band sends is digital format signal, so step S11 can realize in base band, when the signal format needing the i/q signal launched is digital signals format, such as, during the signal sent for base band, step S11 can be omitted.Certainly, also step S11 can be realized by other data format processing unit outside base band.
The method extracting the amplitude envelops value of the i/q signal of digital signals format in the present embodiment can be realized by the module or device (such as FPGA) with digital signal processing function.FPGA (Field-Programmable Gate Array, field programmable gate array), has low in energy consumption, and can reusable advantage.
As shown in Figure 4, in the present embodiment before the amplitude envelops value of i/q signal extracting digital signals format, the method for the amplitude size of induction i/q signal, further comprising the steps of:
S110, interpolation and/or filtering process are carried out to the i/q signal of digital signals format;
And/or, as shown in Figure 5, the method for power consuming devices supply power voltage in this control transmitting path, further comprising the steps of:
S200, do not need launch i/q signal or radiofrequency signal input transmitting path time stop at least one power consuming devices in transmitting path is powered;
Power consuming devices at least comprises radio-frequency power amplifier.
Interpolation can change the emission rate of the i/q signal of digital signals format, and filtering process can filtering interference signals, ensures that the i/q signal of digital signals format is by the interference of irrelevant signal.
Because the transmitting path being in starting state all can not have the i/q signal needing to launch always, such as, in TDD system, receiving path utilizes carrier wave to receive wireless signal, or transmitting path utilizes same carrier transmit wireless signal, all switched by the time, time resource distributes on the reception direction of wireless signal and this both direction of direction of wireless signal emission.Certain time period utilizes carrier wave that wireless signal is sent to travelling carriage (or claiming terminal) by base station, and down direction is also in this direction, and certain time period utilizes same carrier wave that wireless signal is sent to base station by travelling carriage, and line direction is also called in this direction.
The configuring condition of a radio frames (one radio frame) is represented in Fig. 6, in figure, Tf represents the time span of a radio frames, Ts represents the sampling period of system, one of them frame comprises two fields (Onehalf-frame), each field comprises 5 subframes (subframe), so a frame comprises 10 subframes and subframe#0 to subframe#9, wherein #0 represents that the subframe number of this subframe be 0, the time shared by subframe is 1ms.
In form 1: D represents this time end wireless signal and is in down direction, and S represents special subframe, U represents that this time end wireless signal is in up direction.
Form 1
As can be seen from above table 1, when base station utilizes carrier wave that wireless signal is sent to travelling carriage, namely wireless signal to be on down direction namely D state time, also can close for sending the power consuming devices (power consuming devices in the transmitting path in such as travelling carriage) of wireless signal to save power consumption at up direction, otherwise, when travelling carriage utilizes same carrier wave that wireless signal is sent to base station, namely wireless signal to be on up direction namely U-shaped state time, also can close for sending the power consuming devices (power consuming devices in the transmitting path in such as base station) of wireless signal to save power consumption at down direction.
Consider that the time interval owing to receiving in TDD system between wireless signal with wireless signal emission is usually shorter, usually several milliseconds are only had, and the start-up time of many power consuming devices is also greater than this time, so usually only stop power supply to the power consuming devices that start-up time in transmitting path is very short.
When the i/q signal input transmitting path not needing to launch, the amplitude needing the i/q signal launched is zero, so amplitude envelops value is zero, so whether can be the zero i/q signal input transmitting path indirectly judging whether to need to launch by amplitude envelops value, certainly, also whether can have by checkout equipment direct-detection the i/q signal or radiofrequency signal input transmitting path that need to launch.
As shown in Figure 4, extract method and the step S12 of the amplitude envelops value of the i/q signal of digital signals format in the present embodiment, comprise the following steps:
S120, bring the range value of I signal in the i/q signal of digital signals format and the range value of Q signal into formula:
calculate amplitude envelops value, in formula:
A is amplitude envelops value;
I is the range value of I signal in the i/q signal of digital signals format;
Q is the range value of Q signal in the i/q signal of digital signals format.
The amplitude envelops value using above-mentioned formula to calculate accurately can embody the amplitude size of the i/q signal of the digital signals format of different amplitude.Certainly, other formulae discovery amplitude envelops values outside above-mentioned formula can also be adopted, as long as the amplitude envelops value calculated can embody the amplitude size of the i/q signal of digital signals format.
As shown in Figure 4, in the present embodiment, extract method and the step S12 of the amplitude envelops value of the i/q signal of digital signals format, further comprising the steps of:
S121, be greater than N numerical value when the amplitude envelops value gone out according to formulae discovery, and when being not more than N+1 numerical value, extract N+1 numerical value as amplitude envelops value; Wherein:
N is natural number, and N+1 numerical value is greater than N numerical value, and N numerical value and N+1 numerical value are preferably the numerical value in the amplitude envelops value drawn according to formulae discovery.
When the amplitude envelops value calculated due to the i/q signal of the digital signals format of each different amplitude is all for changing the voltage swing of the grid of radio-frequency power amplifier, the variation of amplitude envelops value is more frequent, and then the voltage fluctuation of the grid inputing to radio-frequency power amplifier is very frequent, when the voltage fluctuation of the grid of radio-frequency power amplifier is too frequent, be unfavorable for radio-frequency power amplifier steady operation, so adopt said method can reduce the frequency of amplitude envelops value variation, and then while can realizing saving radio-frequency power amplifier grid voltage power consumption, ensure radio-frequency power amplifier steady operation.
Certainly, the amplitude envelops value i.e. N+1 numerical value extracted in the present embodiment may not be the numerical value in the amplitude envelops value drawn according to formulae discovery, N numerical value may not be the numerical value in the amplitude envelops value drawn according to formulae discovery, such as: the amplitude envelops value extracted also can with the approximation of the numerical value in the amplitude envelops value drawn according to formulae discovery, and for example: the amplitude envelops value extracted also can get the mean value of all values in a certain scope that above formula calculates.Due to when N numerical value and N+1 numerical value are the numerical value in the amplitude envelops value drawn according to formulae discovery, N+1 numerical value at least accurately can embody the amplitude envelops value corresponding to part i/q signal, thus make the Changing Pattern of N+1 numerical values recited approximate consistent with the Changing Pattern of the amplitude envelops value size corresponding to i/q signal, and then ensure that the size of the amplitude envelops value extracted more accurately can embody the amplitude size of i/q signal.
As shown in Figure 4, in the present embodiment, extract the method for the amplitude envelops of the i/q signal of digital signals format, further comprising the steps of:
S122, by the range value of I signal, the range value of Q signal and be stored in look-up table according to the amplitude envelops value that the range value of I signal, the range value of Q signal extract;
S123, find out amplitude envelops value in a lookup table according to the range value of I signal and the range value of Q signal.
During owing to using above-mentioned formulae discovery amplitude envelops value, the device (such as FPGA) with data-handling capacity that not easily especially cost and power consumption are all lower on the device with data-handling capacity is upper to be realized, so be stored in look-up table in advance, then, from look-up table, search amplitude envelops value again can save the step using above-mentioned formulae discovery amplitude envelops value, not only more save time, and cost easy to use and all lower device (such as FPGA) with data-handling capacity of power consumption realize.
Need the amplitude size of the i/q signal launched due to the digital circuit induction that can be formed by FPGA etc. in the present embodiment or respond to by the amplitude size of the radiofrequency signal after i/q signal digital-to-analogue conversion, compared with using the method for analog control circuit in prior art, due to radio-frequency power amplifier grid required for voltage relatively little, change without the need to using voltage conversion chip and export larger voltage, only directly use digital analog converter or only use digital analog converter and processing speed fast, the little operational amplifier of multiplication factor just can voltage required for the grid of radio-frequency power amplifier, because without the need to using voltage conversion chip, and then the voltage transitions speed that it also avoid voltage conversion chip is slow, the pace of change of radiofrequency signal cannot be caught up with, and use Postponement module radio frequency signal delay can affect the normal transmission of radiofrequency signal too for a long time, so finally cause using, the analog control circuit of voltage conversion chip is more difficult realizes radiofrequency signal and the technical problem of voltage synchronous inputing to radio-frequency power amplifier.
Be 16bit for the Q signal of the range value of the I signal of digital signals format, digital signals format below, in the explanation embodiment of the present invention specifically, how step S120, step S121, step S122 and step S123 specifically realize.
First, calculating and travel through out (I^2+Q^2) can getable all values;
When I signal, Q signal are 16bit, the scope of (I^2+Q^2) is (0 ~ 2147483648),
Secondly, calculate all values of correspondence (I^2+Q^2) ^ (0.5), and make initial look-up table (this walks the instrument simple realization such as available Matlab or Excel).When I signal, Q signal are 16bit, the scope of (I^2+Q^2) ^ (0.5) is (0 ~ 46341);
Form 2:
Then, (I^2+Q^2) ^ (0.5) data in initial look-up table are carried out dividing into groups namely to perform step S121 according to certain size, the data area of every class can be regular length (difference of N+1 numerical value and N numerical value is certain value), also more accurately can divide into groups (reducing the size of the difference of N+1 numerical value and N numerical value) according to output voltage demand, thus draw the look-up table that (I^2+Q^2) is corresponding with (I^2+Q^2) ^ (0.5);
The method can be realized by following software program, and the software program (the amplitude envelops value that in program, a (i)=(I^2+Q^2), t (i) find for look-up table) used is as follows:
After the look-up table drawn, just can carry out correspondence according to the range value of I signal, Q signal in look-up table and search, thus find out amplitude envelops value, finally the amplitude envelops value found out be exported.
As shown in Figure 4, raise the voltage exporting radio-frequency power amplifier grid in the present embodiment when amplitude increases, reduce the method exporting the voltage of radio-frequency power amplifier grid to when amplitude reduces, i.e. step S2, comprises the following steps:
S21, digital-to-analogue conversion is carried out to amplitude envelops value;
S22, the voltage of analog signal format digital-to-analogue conversion drawn export the grid of radio-frequency power amplifier to.
Due to radio-frequency power amplifier grid required for voltage be an analog quantity and analog signal format, so need amplitude envelops value to carry out digital-to-analogue conversion, thus the grid of input radio frequency power amplifier again after obtaining analog signal format.
Certainly, also the gate input voltage that transformer is radio-frequency power amplifier can be used in the present embodiment, and can as the control command being used for control transformer output voltage size using amplitude envelops value, like this, the real-time control of the voltage to the grid exporting radio-frequency power amplifier to can also be realized.
As shown in Figure 4, before digital-to-analogue conversion and step S21 being carried out to amplitude envelops value in the present embodiment, further comprising the steps of:
S101, detect on radio-frequency power amplifier and draw the gate voltage curve of radio-frequency power amplifier in advance;
S102, in advance in transmitting path detect draw radio frequency power amplifier grid input constant voltage time, the corresponding relation between the i/q signal of different amplitude and the power output of radio-frequency power amplifier;
S103, the amplitude according to i/q signal, gate voltage curve, corresponding relation calculate the gate voltage values linearly changed with amplitude envelops value required for radio-frequency power amplifier, and utilize the gate voltage values that linearly changes with amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the radio-frequency power amplifier that amplitude envelops value detects, draw penalty constant;
S104, by mode amplitude envelops value be multiplied with penalty constant or be added, Amplitude Compensation is carried out to amplitude envelops value.
Before referring to that the voltage of the grid exporting radio-frequency power amplifier in the embodiment of the present invention to is specially and how much does not determine in advance.
Because radio-frequency power amplifier not only requires that power output is large, efficiency high (i.e. power output and the ratio of its input power of radio-frequency power amplifier drain electrode are larger), and the change of the power output requiring radio-frequency power amplifier to drain is linear relative to the change of the amplitude of i/q signal, namely require that the ratio of the power output that radio-frequency power amplifier drains and amplitude envelops value is a steady state value, but, (abscissa is the power output of radio-frequency power amplifier drain electrode to the gate voltage curve of actual radio-frequency power amplifier, ordinate is the value of the grid voltage of radio-frequency power amplifier) be likely nonlinear, so need to carry out Amplitude Compensation to amplitude envelops value, thus the power output that radio-frequency power amplifier drains is linear relative to the amplitude of i/q signal to make the grid voltage inputing to radio-frequency power amplifier to ensure.
As shown in Figure 4, in the present embodiment after Amplitude Compensation and step S104 are carried out to amplitude envelops value, before digital-to-analogue conversion and step S21 are carried out to amplitude envelops value, further comprising the steps of:
S105, when voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than radio-frequency power amplifier, heighten amplitude envelops value with unified ratio;
Or, when the figure place of the amplitude envelops value of binary format exceeds the maximum number of digits that the D/A conversion unit for carrying out digital-to-analogue conversion to amplitude envelops value can identify, with unified scale smaller amplitude envelops value;
Before the grid that the voltage of analog signal format digital-to-analogue conversion drawn exports radio-frequency power amplifier to and step S22, further comprising the steps of:
Image component in the voltage of S211, filtering analog signal format;
S212, when voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than radio-frequency power amplifier, the magnitude of voltage of analog signal format to be amplified.
When the analog voltage produced after the amplitude envelops value after step S105 heightens carries out digital-to-analogue conversion is still not enough to the grid voltage reaching radio-frequency power amplifier, now, further analog voltage is amplified by step S212, thus ensure the grid voltage of satisfying the demand being inputed to radio-frequency power amplifier, in like manner, when the analog voltage that the analog voltage produced after the device or equipment that perform step S212 carry out digital-to-analogue conversion with its maximum amplification enlargement range envelope value produces still cannot meet the needs of grid voltage of radio-frequency power amplifier, step S105 is then needed to heighten the numerical value of amplitude envelops value further, thus ensure the grid voltage of satisfying the demand being inputed to radio-frequency power amplifier.
When the figure place of the amplitude envelops value of binary format exceeds the maximum that the D/A conversion unit for carrying out digital-to-analogue conversion to amplitude envelops value can identify, be with the reason of unified scale smaller amplitude envelops value:
At present, the D/A conversion unit with analog conversion function that market can have been bought, such as: digital analog converter (digital-to-analog converter, the figure place (bit) of the data of the binary format that DAC) can identify is limited, when the figure place of the amplitude envelops value of binary format exceeds the maximum that the D/A conversion unit for carrying out digital-to-analogue conversion to amplitude envelops value can identify, amplitude envelops value just can be judged to be negative by D/A conversion unit.
Below for the initial data of a 3bit:
| The decimal system | Binary system | |
| I | 3 | 011 |
| Q | 3 | 011 |
| (I^2+Q^2)^(0.5) | 4.24264 | 100 |
First place due to binary one 00 is 1, then now, D/A conversion unit then can mistake sign bit is thought in the first place 1 of binary one 00, thus this is miscounted by mistake think that the decimal system is the negative of-3, and then meeting transforming mistakes analog voltage by mistake, so this situation, by the amplitude envelops value of binary format with unified scale smaller, thus reduce its figure place, avoid D/A conversion unit identification error, although the analog voltage after the amplitude envelops value analog-converted after reducing is lower, but follow-uply can be amplified this analog voltage by step S212 again, thus the voltage ensureing to export to radio-frequency power amplifier grid still meets its requirement.
As shown in Figure 5, in the present embodiment, control the method for power consuming devices supply power voltage in transmitting path, further comprising the steps of:
After S4, detection i/q signal or radiofrequency signal input transmitting path, the grid that the grid of radio-frequency power amplifier and/or drain electrode receive voltage and radio-frequency power amplifier receives the time of radiofrequency signal, and after calculating i/q signal or radiofrequency signal input transmitting path, the time difference between the time that the grid of time and radio-frequency power amplifier that the grid of radio-frequency power amplifier and/or drain electrode receive voltage receives radiofrequency signal;
S5, according to the time difference, i/q signal or radiofrequency signal to be postponed, make the voltage of the grid exporting radio-frequency power amplifier to and/or the voltage of drain electrode and radiofrequency signal synchronously arrive radio-frequency power amplifier.
Oscilloscope can be accessed at the grid of radio-frequency power amplifier and/or drain electrode, after detecting i/q signal or radiofrequency signal input transmitting path by oscilloscope, when the grid of radio-frequency power amplifier and/or drain electrode receive the time of voltage in step S4; Can at the grid access frequency spectrograph of radio-frequency power amplifier, after detecting i/q signal or radiofrequency signal input transmitting path by frequency spectrograph, the grid of radio-frequency power amplifier receives the time of radiofrequency signal.In order to ensure that oscilloscope and frequency spectrograph start the time consistency detected, and then ensure that oscilloscope and frequency spectrograph synchronously start to detect in time, need by oscilloscope with frequency spectrograph is used for synchronous BNC (Bayonet Nut Connector, bayonet nut connector) interface couples together, then tests.If there are error oscilloscope and the time detected by frequency spectrograph, can finely tune the size of the value of time difference in later stage debug process, thus ensure to export to the voltage of the grid of radio-frequency power amplifier and/or the voltage of drain electrode and radiofrequency signal and synchronously arrive radio-frequency power amplifier.
Performing step S4 and step S5 can make the voltage of the grid exporting radio-frequency power amplifier to and radiofrequency signal synchronously arrive radio-frequency power amplifier, now, radio-frequency power amplifier not only has radiofrequency signal to input, and have the grid voltage corresponding with the amplitude of radiofrequency signal and drain voltage to input, so radio-frequency power amplifier can be amplified to required power to the radiofrequency signal of input.
Embodiment of the method 2:
As shown in Figure 7, the embodiment 1 that the inventive method embodiment 2 and the invention described above provide is substantially identical, and its difference is: in the present embodiment, step S1 is: the amplitude size responding to the radiofrequency signal after by i/q signal digital-to-analogue conversion.
The inventive method embodiment 1 in like manner, the amplitude size of the radiofrequency signal after by i/q signal digital-to-analogue conversion first can be responded in the embodiment of the present invention, and then the voltage swing of the grid exporting at least one radio-frequency power amplifier (such as final stage radio-frequency power amplifier) to is controlled in real time according to amplitude size, as can be seen here, step S1 in the embodiment 1 that in the inventive method embodiment 2, step S1 and the invention described above provide is corresponding specified features, the embodiment 1 provided due to the inventive method embodiment 2 and the invention described above has identical/corresponding specified features, so both can not only obtain identical/close technique effect, identical/close technical problem can be solved, and both also have unicity.
As shown in Figure 8, respond to method and the step S1 of the amplitude size of the radiofrequency signal after by i/q signal digital-to-analogue conversion in the present embodiment, comprise the following steps:
S11, radiofrequency signal to be coupled, and to generate the coupled signal of analog signal format;
S12, range value according to coupled signal, generate amplitude envelops voltage;
The voltage swing and the step S2 that control the grid exporting at least one radio-frequency power amplifier in the present embodiment according to amplitude size are in real time specially:
S20, voltage transitions is carried out to amplitude envelops voltage, and export the amplitude envelops voltage after voltage transitions the grid of radio-frequency power amplifier to.
Due to radio-frequency power amplifier grid required for voltage much smaller than its drain electrode required for voltage, so the power consuming devices carrying out voltage transitions in the present embodiment can select voltage transitions speed fast, the voltage amplifying device that multiplication factor is little, such as: operational amplifier.
Device embodiment 1:
As shown in Figure 9, in the present embodiment, control the device of power consuming devices supply power voltage in transmitting path, comprise induction module 1 and control module 2, wherein:
Induction module 1, for responding to the amplitude size needing the i/q signal launched;
Control module 2, for raising the voltage of radio-frequency power amplifier 9 grid exported to for amplifying RF signal power when amplitude increases, reduces the voltage exporting radio-frequency power amplifier 9 grid to when amplitude reduces.
Because induction module in the embodiment of the present invention 1 first can respond to the amplitude size needing the i/q signal launched, then control module 2 raises the voltage of radio-frequency power amplifier 9 grid exported to for amplifying RF signal power when amplitude increases, reduce the voltage exporting radio-frequency power amplifier 9 grid to when amplitude reduces, thus the voltage swing of the grid exporting at least one radio-frequency power amplifier 9 (such as final stage radio-frequency power amplifier 92) to can be controlled according to amplitude size in real time;
Simultaneously, because prior art is ensure that the power inputing to the i/q signal of the arbitrary size amplitude of radio-frequency power amplifier 9 all can be amplified normally, its voltage being continuously the voltage value constant of the grid input of radio-frequency power amplifier 9 is larger, so compared with the voltage of the voltage value constant inputted with the grid of the radio-frequency power amplifier 9 be continuously in prior art in transmitting path, in the present invention when needing the amplitude of the i/q signal launched to diminish, the voltage exporting the grid of radio-frequency power amplifier 9 to also can diminish, the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier 9 be continuously in transmitting path will inevitably be less than in prior art after diminishing, when needing the amplitude of the i/q signal launched to become large in the embodiment of the present invention, even if changes in amplitude is to maximum, the voltage exporting the grid of radio-frequency power amplifier 9 to only can equal to be continuously in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier 9 in transmitting path and can not be greater than in prior art the voltage of the voltage value constant of the grid input of the radio-frequency power amplifier 9 be continuously in transmitting path,
As can be seen here, the voltage exporting the grid of radio-frequency power amplifier 9 to due to the most of the time in the embodiment of the present invention is all less than in prior art the voltage of the voltage value constant of the grid input being continuously radio-frequency power amplifier 9, so the power consumption that in the embodiment of the present invention, the voltage of the grid input of radio frequency power amplifier 9 causes is less, and then the power consumption of radio-frequency power amplifier 9 and even transmitting path is also less, so solve prior art exist transmitting path in running order time be continuously radio-frequency power amplifier 9 grid power and cause the technical problem that the power consumption of transmitting path is larger.
As shown in Figure 10, in the present embodiment, radio-frequency power amplifier 9 is final stage radio-frequency power amplifier 92 and/or gain adjustment module 91, wherein:
Control module 2, raises the voltage exporting radio-frequency power amplifier 9 to and drain when amplitude increases, reduce the voltage exporting radio-frequency power amplifier 9 to and drain when amplitude reduces.
The method of the voltage of radio-frequency power amplifier 9 grid is exported in like manner with control, because the power output of final stage radio-frequency power amplifier 92 and gain adjustment module 91 all increases in company with the increase of the input voltage of its grid and drain electrode, so when the amplitude size of the i/q signal that the drain electrode of gain adjustment module 91 and the voltage of final stage radio-frequency power amplifier 92 drain electrode are launched with the need changes, when controlling to export to the voltage swing of the drain electrode of at least one gain adjustment module 91 and/or grid in real time according to amplitude size, the power consumption of transmitting path can be reduced further.
When there is multiple radio-frequency power amplifier 9 in transmitting path, voltage swing required for different its grids of radio-frequency power amplifier 9 and drain electrode is different, so need in the present embodiment to input different voltage respectively to the grid of different radio-frequency power amplifiers 9 or drain electrode respectively, simultaneously, the necessary condition being in magnifying state due to radio-frequency power amplifier 9 is that the drain voltage of same radio-frequency power amplifier 9 must be greater than its grid voltage and could realize power amplification, so also different voltage must be inputted respectively to the grid of same radio-frequency power amplifier 9 and its drain electrode, certainly, the voltage that also can only make to export to the grid of wherein a part of radio-frequency power amplifier 9 in the present embodiment changes with amplitude size, the voltage of the drain electrode exporting wherein another part radio-frequency power amplifier 9 to is only made to change with amplitude size.
As shown in figure 11, in the present embodiment, induction module 1 comprises data processing unit 11 and envelope extraction unit 12, wherein:
Data processing unit 11, for when the signal format needing the i/q signal launched is nonnumeric signal format, is all treated to digital signals format by i/q signal;
Envelope extraction unit 12, for extracting the amplitude envelops value of the i/q signal of digital signals format, amplitude envelops value increases with the increase of amplitude, and reduces with the reduction of amplitude.
The signal launched required for usual transmitting path is that base band sends, the signal that base band sends is digital format signal, so data processing unit 11 can be base band, when the signal format needing the i/q signal launched is digital signals format, such as, during the signal sent for base band, can omitted data processing unit 11.Certainly, data processing unit 11 also can be other data format processing unit outside base band.
The method extracting the amplitude envelops value of the i/q signal of digital signals format in the present embodiment can be realized by the module or device (such as FPGA) with digital signal processing function.FPGA (Field-Programmable Gate Array, field programmable gate array), has low in energy consumption, and can reusable advantage.
As shown in figure 11, induction module 1 in the present embodiment, also comprises digital signal processing unit 110, wherein:
Digital signal processing unit 110, for carrying out interpolation and/or filtering process to the i/q signal of digital signals format.
Interpolation can change the emission rate of the i/q signal of digital signals format, and filtering process can filtering interference signals, ensures that the i/q signal of digital signals format is by the interference of irrelevant signal.
Envelope extraction unit 12 in the present embodiment, also comprises computation subunit 120, wherein:
Computation subunit 120, for bringing the range value of I signal in the i/q signal of digital signals format and the range value of Q signal into formula:
calculate amplitude envelops value, in formula:
A is amplitude envelops value;
I is the range value of I signal in the i/q signal of digital signals format;
Q is the range value of Q signal in the i/q signal of digital signals format.
The amplitude envelops value using above-mentioned formula to calculate accurately can embody the amplitude size of the i/q signal of the digital signals format of different amplitude.Certainly, other formulae discovery amplitude envelops values outside above-mentioned formula can also be adopted, as long as the amplitude envelops value calculated can embody the amplitude size of the i/q signal of digital signals format.
As shown in figure 11, envelope extraction unit 12 in the present embodiment, also comprises classification subelement 121, wherein:
Classification subelement 121, for being greater than N numerical value when the amplitude envelops value gone out according to formulae discovery, and when being not more than N+1 numerical value, extracts N+1 numerical value as amplitude envelops value; Wherein:
N is natural number, and N+1 numerical value is greater than N numerical value, and N numerical value and N+1 numerical value are all preferably the numerical value in the amplitude envelops value drawn according to formulae discovery;
And/or envelope extraction unit 12 is Matlab or Excel;
And/or digital signal processing unit 110 is FPGA.
When the amplitude envelops value calculated due to the i/q signal of the digital signals format of each different amplitude is all for changing the voltage swing of the grid of radio-frequency power amplifier 9, the variation of amplitude envelops value is more frequent, and then the voltage fluctuation of the grid inputing to radio-frequency power amplifier 9 is very frequent, when the voltage fluctuation of the grid of radio-frequency power amplifier 9 is too frequent, be unfavorable for radio-frequency power amplifier 9 steady operation, so adopt said method can reduce the frequency of amplitude envelops value variation, and then while can realizing saving radio-frequency power amplifier 9 grid voltage power consumption, ensure radio-frequency power amplifier 9 steady operation.
Certainly, the amplitude envelops value i.e. N+1 numerical value extracted in the present embodiment may not be the numerical value in the amplitude envelops value drawn according to formulae discovery, N numerical value may not be the numerical value in the amplitude envelops value drawn according to formulae discovery, such as: the amplitude envelops value extracted also can with the approximation of the numerical value in the amplitude envelops value drawn according to formulae discovery, and for example: the amplitude envelops value extracted also can get the mean value of all values in a certain scope that above formula calculates.Due to when N numerical value and N+1 numerical value are the numerical value in the amplitude envelops value drawn according to formulae discovery, N+1 numerical value at least accurately can embody the amplitude envelops value corresponding to part i/q signal, thus make the Changing Pattern of N+1 numerical values recited approximate consistent with the Changing Pattern of the amplitude envelops value size corresponding to i/q signal, and then ensure that the size of the amplitude envelops value extracted more accurately can embody the amplitude size of i/q signal.
Matlab or Excel is the list data process software of comparative maturity, and has data search advantage easily and efficiently.Certainly, in the present embodiment, envelope extraction unit 12 also can realize for other softwares outside Matlab or Excel.
As shown in figure 11, envelope extraction unit 12 in the present embodiment, also comprises storing sub-units 122 and searches subelement 123, wherein:
Storing sub-units 122, for by the range value of I signal, the range value of Q signal and be stored in look-up table according to the amplitude envelops value that the range value of I signal, the range value of Q signal extract;
Search subelement 123, for finding out amplitude envelops value in a lookup table according to the range value of I signal and the range value of Q signal.
During owing to using above-mentioned formulae discovery amplitude envelops value, the device (such as FPGA) with data-handling capacity that not easily especially cost and power consumption are all lower on the device with data-handling capacity is upper to be realized, so be stored in look-up table in advance, then, from look-up table, search amplitude envelops value again can save the step using above-mentioned formulae discovery amplitude envelops value, not only more save time, and cost easy to use and all lower device (such as FPGA) with data-handling capacity of power consumption realize.
Due to above, the embodiment of the method for power consuming devices supply power voltage (in the control transmitting path that the embodiment of the present invention provides) has illustrated to illustrate how to make look-up table, so no longer repeat citing herein.
As shown in figure 11, control module 2 in the present embodiment, comprises D/A conversion unit 21 and voltage output unit 22, wherein:
D/A conversion unit 21, for carrying out digital-to-analogue conversion to amplitude envelops value;
Voltage output unit 22, the voltage for analog signal format digital-to-analogue conversion drawn exports the grid of radio-frequency power amplifier 9 to.
Due to radio-frequency power amplifier 9 grid required for voltage be an analog quantity and analog signal format, so need amplitude envelops value to carry out digital-to-analogue conversion, thus the grid of input radio frequency power amplifier 9 again after obtaining analog signal format.
Certainly, also transformer can be used in the present embodiment for the gate input voltage of radio-frequency power amplifier 9, and can as the control command being used for control transformer output voltage size using amplitude envelops value, like this, the real-time control of the voltage to the grid exporting radio-frequency power amplifier 9 to can also be realized.
As shown in figure 11, induction module 1 in the present embodiment, also comprises the first detecting unit 101, second detecting unit 102, constant computation unit 103 and envelope cancellation unit 104, wherein:
First detecting unit 101, for detecting the gate voltage curve drawing radio-frequency power amplifier 9 in advance on radio-frequency power amplifier 9;
Second detecting unit 102, when in transmitting path, detection draws the grid input constant voltage of radio frequency power amplifier 9 in advance, the corresponding relation between the i/q signal of different amplitude and the power output of radio-frequency power amplifier 9;
Constant computation unit 103, the gate voltage values linearly changed with amplitude envelops value of radio-frequency power amplifier 9 is calculated for the amplitude according to i/q signal, gate voltage curve, corresponding relation, and utilize the gate voltage values that linearly changes with amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the radio-frequency power amplifier 9 that amplitude envelops value detects, draw penalty constant;
Envelope cancellation unit 104, for carrying out Amplitude Compensation by mode amplitude envelops value be multiplied with penalty constant or be added to amplitude envelops value.
Before referring to that the voltage of the grid exporting radio-frequency power amplifier 9 in the embodiment of the present invention to is specially and how much does not determine in advance, before namely in the control transmitting path that provides of the embodiment of the present invention, in the device of power consuming devices supply power voltage and transmitting path, the grid of radio-frequency power amplifier 9 connects.
Because radio-frequency power amplifier 9 not only requires that power output is large, efficiency high (i.e. the power output that drains of radio-frequency power amplifier 9 and the ratio of its input power larger), and require that the change of the power output that radio-frequency power amplifier 9 drains is linear relative to the change of the amplitude of i/q signal, namely require that the ratio of the power output that radio-frequency power amplifier 9 drains and amplitude envelops value is a steady state value, but, (abscissa is the power output that radio-frequency power amplifier 9 drains to the gate voltage curve of actual radio-frequency power amplifier 9, ordinate is the value of the grid voltage of radio-frequency power amplifier 9) be likely nonlinear, so need to carry out Amplitude Compensation to amplitude envelops value, thus the power output that radio-frequency power amplifier 9 radio-frequency power amplifier 9 drains is linear relative to the amplitude of i/q signal to make the grid voltage inputing to radio-frequency power amplifier 9 to ensure.
As shown in figure 11, in the present embodiment, induction module 1 also comprises amplitude adjusting elements 105,
Amplitude adjusting elements 105, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of radio-frequency power amplifier 9, heightens amplitude envelops value with unified ratio; Or,
Amplitude adjusting elements 105, when the figure place for the amplitude envelops value when binary format exceeds the maximum number of digits that the D/A conversion unit 21 for carrying out digital-to-analogue conversion to amplitude envelops value can identify, with unified scale smaller amplitude envelops value;
Control module 2 also comprises filter unit 211 and/or amplitude amplifying unit 212, wherein:
Filter unit 211, for the image component in the voltage of filtering analog signal format;
Amplitude amplifying unit 212, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of radio-frequency power amplifier 9, amplifies the magnitude of voltage of analog signal format.
When the analog voltage produced after the amplitude envelops value after amplitude adjusting elements 105 is heightened carries out digital-to-analogue conversion is still not enough to the grid voltage reaching radio-frequency power amplifier 9, now, further analog voltage is amplified by amplitude amplifying unit 212, thus ensure the grid voltage of satisfying the demand being inputed to radio-frequency power amplifier 9, in like manner, when the analog voltage that the analog voltage produced after the device or equipment that perform amplitude amplifying unit 212 carry out digital-to-analogue conversion with its maximum amplification enlargement range envelope value produces still cannot meet the needs of grid voltage of radio-frequency power amplifier 9, amplitude adjusting elements 105 is then needed to heighten the numerical value of amplitude envelops value further, thus ensure the grid voltage of satisfying the demand being inputed to radio-frequency power amplifier 9.
When the figure place of the amplitude envelops value of binary format exceeds the maximum that the D/A conversion unit 21 for carrying out digital-to-analogue conversion to amplitude envelops value can identify, with the reason of unified scale smaller amplitude envelops value above the embodiment of the method for power consuming devices supply power voltage (in the control transmitting path that the embodiment of the present invention provides) having illustrated illustrates, so no longer repeat citing herein.
As shown in figure 11, in the present embodiment, amplitude amplifying unit 212 is operational amplifier; And/or filter unit 211 is LC low pass filter in the present embodiment.
Operational amplifier and LC low pass filter are with low cost, and connect electronic device simply and easily, be suitable for being applied in the embodiment of the present invention, certainly, in the present embodiment, amplitude amplifying unit 212 and filter unit 211 also can use other electronic devices to realize the embodiment of the present invention to realize.
The digital circuit induction that can consist of FPGA etc. in the present embodiment needs the amplitude size of the i/q signal launched or responds to by the amplitude size of the radiofrequency signal after i/q signal digital-to-analogue conversion, compared with using the method for analog control circuit in prior art, due to radio-frequency power amplifier 9 grid required for voltage relatively little, change without the need to using voltage conversion chip 83 and export larger voltage, only directly use digital analog converter or only use digital analog converter and processing speed fast, the little operational amplifier of multiplication factor just can voltage required for the grid of radio-frequency power amplifier 9, because without the need to using voltage conversion chip 83, and then the voltage transitions speed that it also avoid voltage conversion chip 83 is slow, the pace of change of radiofrequency signal cannot be caught up with, and use Postponement module 5 radio frequency signal delay can affect the normal transmission of radiofrequency signal too for a long time, so finally cause using, the analog control circuit of voltage conversion chip 83 is more difficult realizes radiofrequency signal and the technical problem of voltage synchronous inputing to radio-frequency power amplifier 9.
As shown in Figure 10, in the present embodiment, control the device of power consuming devices supply power voltage in transmitting path, also comprise time determination module 4 and Postponement module 5, wherein:
Time determination module 4, after detecting i/q signal or radiofrequency signal input transmitting path, the grid that the grid of radio-frequency power amplifier 9 and/or drain electrode receive voltage and radio-frequency power amplifier 9 receives the time of radiofrequency signal, and after calculating i/q signal or radiofrequency signal input transmitting path, the time difference between the time that the grid of time and radio-frequency power amplifier 9 that the grid of radio-frequency power amplifier 9 and/or drain electrode receive voltage receives radiofrequency signal;
Postponement module 5, for postponing i/q signal or radiofrequency signal according to the time difference, makes the voltage of the grid exporting radio-frequency power amplifier 9 to and/or the voltage of drain electrode and radiofrequency signal synchronously arrive radio-frequency power amplifier 9.
Time determination module 4 can comprise oscilloscope and frequency spectrograph, can at the grid of radio-frequency power amplifier 9 and/or drain electrode access oscilloscope during concrete detection, after detecting i/q signal or radiofrequency signal input transmitting path by oscilloscope, when the grid of radio-frequency power amplifier 9 and/or drain electrode receive the time of voltage; Can at the grid access frequency spectrograph of radio-frequency power amplifier 9, after detecting i/q signal or radiofrequency signal input transmitting path by frequency spectrograph, the grid of radio-frequency power amplifier 9 receives the time of radiofrequency signal.In order to ensure that oscilloscope and frequency spectrograph start the time consistency detected, and then ensure that oscilloscope and frequency spectrograph synchronously start to detect in time, need by oscilloscope with frequency spectrograph is used for synchronous BNC (Bayonet NutConnector, bayonet nut connector) interface couples together, then tests.If there are error oscilloscope and the time detected by frequency spectrograph, can finely tune the size of the value of time difference in later stage debug process, thus ensure to export to the voltage of the grid of radio-frequency power amplifier 9 and/or the voltage of drain electrode and radiofrequency signal and synchronously arrive radio-frequency power amplifier 9.
Under the effect of Postponement module 5, export the voltage of the grid of radio-frequency power amplifier 9 and/or the voltage of drain electrode and radiofrequency signal to and synchronously arrive radio-frequency power amplifier 9, now, radio-frequency power amplifier 9 not only has radiofrequency signal to input, and have the grid voltage corresponding with the amplitude of radiofrequency signal and drain voltage to input, so radio-frequency power amplifier 9 can be amplified to required power to the radiofrequency signal of input.The function of Postponement module 5 can realize in FPGA.
As shown in figure 11, in the present embodiment, control module 2 also comprises voltage switching unit 23, wherein:
Voltage switching unit 23, for stopping powering at least one power consuming devices in transmitting path when the i/q signal not needing to launch or radiofrequency signal input transmitting path, power consuming devices at least comprises radio-frequency power amplifier 9 and amplitude amplifying unit 212.
Because the transmitting path being in starting state all can not have the i/q signal needing to launch always, such as, in TDD system, receiving path utilizes carrier wave to receive wireless signal, or transmitting path utilizes same carrier transmit wireless signal, all switched by the time, time resource distributes on the reception direction of wireless signal and this both direction of direction of wireless signal emission, so when base station utilizes carrier wave that wireless signal is sent to travelling carriage, also can close for sending the power consuming devices (power consuming devices in the transmitting path in such as travelling carriage) of wireless signal to save power consumption at up direction, otherwise, when travelling carriage utilizes same carrier wave that wireless signal is sent to base station, also can close for sending the power consuming devices (power consuming devices in the transmitting path in such as base station) of wireless signal to save power consumption at down direction.
Consider that the time interval owing to receiving in TDD system between wireless signal with wireless signal emission is usually shorter, usually several milliseconds are only had, and the start-up time of many power consuming devices is also greater than this time, so usually only stop power supply to power consuming devices such as radio-frequency power amplifier 9 and operational amplifier that start-up time in transmitting path is very short.
When the i/q signal input transmitting path not needing to launch, amplitude envelops value is zero, so whether can be the zero i/q signal input transmitting path indirectly judging whether to need to launch by amplitude envelops value, certainly, also whether can have by checkout equipment direct-detection the i/q signal or radiofrequency signal input transmitting path that need to launch.
Device embodiment 2:
As shown in figure 12, the device embodiment 1 that apparatus of the present invention embodiment 2 and the invention described above provide is substantially identical, and its difference is: induction module 1 in the present embodiment, for responding to the amplitude size of the radiofrequency signal after by i/q signal digital-to-analogue conversion.
The embodiment of the method 1 provided due to apparatus of the present invention embodiment 2 and the invention described above and device embodiment 1 have corresponding specified features, and the embodiment of the method 2 that apparatus of the present invention embodiment 2 and the invention described above provide has identical specified features, so four all can reach identical or close technique effect, solve identical or close technical problem.
As shown in figure 13, induction module 1 in the present embodiment, comprises coupling unit and envelope detected unit, wherein:
Coupling unit, for radiofrequency signal being coupled, and generates the coupled signal of analog signal format;
Envelope detected unit, for the range value according to coupled signal, generates amplitude envelops voltage.
Control module 2, specifically for carrying out voltage transitions to amplitude envelops voltage, and exports the grid of radio-frequency power amplifier 9 to by the amplitude envelops voltage after voltage transitions.
In the present embodiment, coupling unit can adopt coupler 81, and envelope detected unit can adopt envelope detected module 82, and control module 2 can adopt voltage conversion chip 83 as shown in Figure 2.Coupler 81, envelope detected module 82 and voltage conversion chip 83 all can use and the power consuming devices that in prior art, the coupler 81, envelope detected module 82 and the voltage conversion chip 83 that use of analog control circuit is identical as shown in Figure 2, as can be seen here, the analog control circuit that prior art also can be used in the embodiment of the present invention to provide is to control the grid voltage of radio-frequency power amplifier 9.
Due to radio-frequency power amplifier 9 grid required for voltage much smaller than its drain electrode required for voltage, select conversion speed fast so the control module 2 of carrying out voltage transitions in the present embodiment is preferably, the voltage amplifying device that multiplication factor is little, such as: operational amplifier.
As shown in Figure 9, the emission system that the embodiment of the present invention provides, comprises the device of power consuming devices supply power voltage in the control transmitting path that transmitting path and the invention described above embodiment provide, wherein:
Power consuming devices in transmitting path comprises D/A converter module 7, modulation module 8, antenna 10 and at least one radio-frequency power amplifier 9, and radio-frequency power amplifier 9 is final stage radio-frequency power amplifier 92 and/or gain adjustment module 91,
D/A converter module 7, for being all converted to analog signal format by the i/q signal of digital signals format;
Modulation module 8, for being modulated to radiofrequency signal by the I signal of analog signal format and the Q signal of analog signal format;
Radio-frequency power amplifier 9, for amplifying the power of radiofrequency signal;
Emission system is TDD emission system or FDD emission system.
The emission system provided due to the embodiment of the present invention has identical technical characteristic with the device of power consuming devices supply power voltage in the control transmitting path that the invention described above embodiment provides, so both not only can produce identical technique effect, solve identical technical problem, but also there is unicity.
Because in the control transmitting path that the invention described above embodiment provides, the device of power consuming devices supply power voltage both may be used for the voltage of real-time control inputs to radio-frequency power amplifier 9 grid, also may be used for the voltage controlling radio-frequency power amplifier 9 drain electrode in real time, so in the control transmitting path that ought only use the invention described above embodiment to provide the device of power consuming devices supply power voltage for real-time control inputs to the voltage of radio-frequency power amplifier 9 grid, and when controlling the voltage of radio-frequency power amplifier 9 drain electrode time unreal, the voltage that radio-frequency power amplifier 9 drains can input the voltage of a voltage value constant, otherwise, when the voltage that the device of power consuming devices supply power voltage in the control transmitting path only using the invention described above embodiment to provide drains to radio-frequency power amplifier 9 for real-time control inputs, and when controlling the voltage of radio-frequency power amplifier 9 grid time unreal, the voltage of radio-frequency power amplifier 9 grid can input the voltage of a voltage value constant.
D/A converter module 7 and modulation module 8 can use existing D/A converter module 7 and modulation module 8 in existing TDD-LTE system.Like this, in the control transmitting path that the embodiment of the present invention can be used to provide, the device of power consuming devices supply power voltage is directly transformed the transmitting path in existing TDD-LTE system.
In the present embodiment, emission system both can be TDD emission system, also can be FDD emission system.Due to no matter, in TDD emission system or FDD emission system, its transmitting path all can use radio-frequency power amplifier 9 to amplify the power of radiofrequency signal, thus ensures that wireless signal can be launched by antenna 10 reliably.
As shown in Figure 9, in the present embodiment, transmitting path is base station or terminal; And/or modulation module 8 is frequency mixer;
And/or gain adjustment module 91 comprises at least one driving amplifier (driver) 911 and at least one programmable gain amplifier device (Programmable Gain control, PGC) 912, wherein:
Driving amplifier 911, for being amplified to the power of radio-frequency power amplifier 9 with specified multiple by the power of radiofrequency signal;
Programmable gain amplifier device 912, for when the power of radiofrequency signal is unstable, radio frequency signal carries out power back-off, makes the power of radiofrequency signal meet power required for radio-frequency power amplifier 9.
Programmable gain amplifier device 912 for offsetting uncertain factor (such as larger change the occurs temperature) impact on the multiplication factor of driving amplifier 911, thus ensures that the power of the radiofrequency signal that driving amplifier 911 exports can meet the power required for radio-frequency power amplifier 9 all the time.
As shown in Figure 9, final stage radio-frequency power amplifier 92 in the present embodiment, comprises main amplifier 921 and from amplifier 922, transmitting path also comprises shunt module 901 and closes road module 902, wherein:
Shunt module 901, inputs to main amplifier 921 for the radiofrequency signal after gain adjustment module 91 being amplified and respectively from amplifier 922;
Main amplifier 921 and from amplifier 922, is respectively used to power and the amplitude of amplifying radiofrequency signal, and is sent to after the power of radiofrequency signal and amplitude being amplified and closes road module 902,
Main amplifier 921 varies in size with the input power value (also claiming to open thresholding) of radiofrequency signal required when opening from amplifier 922, and the input power value being preferably radiofrequency signal required when main amplifier 921 is opened is less than the input power value of radiofrequency signal required when opening from amplifier 922;
Close road module 902, for by main amplifier 921 and amplify from amplifier 922 and export antenna 10 to behind the radiofrequency signal conjunction road of the output that drain separately from it.
In the present embodiment, main amplifier 921 varies in size with the input power value of radiofrequency signal required when opening from amplifier 922, like this can when radiofrequency signal input power be less, only open main amplifier 921 and the input power value of radio frequency signal requires less one from amplifier 922, when radiofrequency signal input power is larger, main amplifier 921 can be opened and from amplifier 922 simultaneously, thus main amplifier 921 causes power consumption larger with opening from amplifier 922 simultaneously when radiofrequency signal input power can be avoided less, so the power consumption of transmitting path can be saved further.
In the present embodiment, control module 2 is preferably the voltage swing of grid only for controlling in real time to export to from amplifier 922 according to amplitude size.
Ratio due to the power output of radiofrequency signal of amplifying through final stage radio-frequency power amplifier 92 and the input power of this radiofrequency signal is a constant value, so when antenna 10 radio-frequency signal output power that needs final stage radio-frequency power amplifier 92 to export is larger, the input power of radiofrequency signal is inevitable also larger, now may start from amplifier 922, and grid voltage larger time final stage radio-frequency power amplifier 92 could export the radiofrequency signal of larger power output, so when working from amplifier 922, its gate voltage values is usually larger, so, the voltage swing controlling the grid exporting main amplifier 921 to according to amplitude size in real time can save more power consumption.Certainly, control module 2 also can simultaneously for controlling the voltage swing exporting the grid of main amplifier 921 and the grid from amplifier 922 in real time according to amplitude size, now, the induction module 1 of powering for the grid of main amplifier 921 and control module 2 and the induction module 1 for powering from the grid of amplifier 922 and control module 2 independent separately, certainly, if the induction module 1 that the grid of main amplifier 921 is powered includes data processing unit 11 with the induction module 1 for powering from the grid of amplifier 922, envelope extraction unit 12, during digital signal processing unit 110, the induction module 1 of powering for the grid of main amplifier 921 can share the same data processing unit 11 that comprises with the induction module 1 for powering from the grid of amplifier 922, envelope extraction unit 12, digital signal processing unit 110, thus existing resource can be utilized more fully, reach cost-effective object.
In the present embodiment, main amplifier 921 is preferably and uses Peak radio-frequency power amplifier, is preferably uses Carrier radio-frequency power amplifier from amplifier 922.Input power value due to radiofrequency signal required when Carrier radio-frequency power amplifier is opened is less than the input power value of required radiofrequency signal when Peak radio-frequency power amplifier is opened, thus Peak radio-frequency power amplifier and Carrier radio-frequency power amplifier with the use of time there is advantage low in energy consumption.
Radio-frequency power amplifier 9 according to the difference at current lead-through angle, can be divided into the multiple different operating states such as A, B, C, AB class.Such as: in the present embodiment, the operating state of Peak radio-frequency power amplifier can be C class, the operating state of Carrier radio-frequency power amplifier can be AB class.Certainly, main amplifier 921 and the operating state from amplifier 922 also can be set to consistent or other operating states according to the demand of reality.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (14)
1. control a method for power consuming devices supply power voltage in transmitting path, it is characterized in that, comprise the following steps:
When transmitting path is in running order, induction needs the amplitude size of the i/q signal launched or responds to by the amplitude size of the radiofrequency signal after described i/q signal digital-to-analogue conversion;
Raising the voltage of the radio-frequency power amplifier grid exported to for amplifying described RF signal power when described amplitude increases, reducing the voltage exporting described radio-frequency power amplifier grid to when described amplitude reduces;
Described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module, the method for power consuming devices supply power voltage in described control transmitting path, further comprising the steps of:
Raise the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude increases, reduce the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude reduces;
Wherein, respond to the method for the amplitude size of described i/q signal, comprise the following steps:
When the signal format needing the described i/q signal launched is nonnumeric signal format, described i/q signal is all treated to digital signals format;
Extract the amplitude envelops value of the described i/q signal of digital signals format, described amplitude envelops value increases with the increase of described amplitude, and reduces with the reduction of described amplitude;
Before the amplitude envelops value of described i/q signal extracting digital signals format, respond to the method for the amplitude size of described i/q signal, further comprising the steps of:
Interpolation and/or filtering process are carried out to the described i/q signal of digital signals format;
And/or, extract the method for the amplitude envelops value of the described i/q signal of digital signals format, comprise the following steps:
Bring the range value of I signal described in the described i/q signal of digital signals format and the range value of described Q signal into formula:
calculate described amplitude envelops value, in described formula:
A is described amplitude envelops value;
The range value of I signal described in the described i/q signal that I is digital signals format;
The range value of Q signal described in the described i/q signal that Q is digital signals format;
Raise the voltage exporting described radio-frequency power amplifier grid to when described amplitude increases, reduce the method exporting the voltage of described radio-frequency power amplifier grid to when described amplitude reduces, comprise the following steps:
Digital-to-analogue conversion is carried out to described amplitude envelops value;
The voltage of analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to.
2. the method for power consuming devices supply power voltage in control transmitting path according to claim 1, is characterized in that, extracts the method for the amplitude envelops value of the described i/q signal of digital signals format, further comprising the steps of:
When the described amplitude envelops value gone out according to described formulae discovery is greater than N numerical value, and when being not more than N+1 numerical value, extract N+1 numerical value as described amplitude envelops value; Wherein:
Described N is natural number, and described N+1 numerical value is greater than described N numerical value, and described N numerical value and described N+1 numerical value are the numerical value in the described amplitude envelops value drawn according to described formulae discovery.
3. the method for power consuming devices supply power voltage in control transmitting path according to claim 1, is characterized in that, extracts the method for the amplitude envelops value of the described i/q signal of digital signals format, further comprising the steps of:
By the range value of the range value of described I signal, described Q signal and be stored in look-up table according to the described amplitude envelops value that the range value of described I signal, the range value of described Q signal extract;
In described look-up table, described amplitude envelops value is found out according to the range value of described I signal and the range value of described i/q signal.
4. the method for power consuming devices supply power voltage in control transmitting path according to claim 1, is characterized in that, before carrying out digital-to-analogue conversion to described amplitude envelops value, further comprising the steps of:
The gate voltage curve drawing described radio-frequency power amplifier is detected in advance on described radio-frequency power amplifier;
When detecting the grid input constant voltage drawn described radio-frequency power amplifier in advance in described transmitting path, the corresponding relation between the i/q signal of different amplitude and the power output of described radio-frequency power amplifier;
The gate voltage values linearly changed with described amplitude envelops value required for described radio-frequency power amplifier is calculated according to the amplitude of described i/q signal, described gate voltage curve, described corresponding relation, and utilize the gate voltage values that linearly changes with described amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the described radio-frequency power amplifier that described amplitude envelops value detects, draw penalty constant;
By the mode described amplitude envelops value be multiplied with described penalty constant or be added, Amplitude Compensation is carried out to described amplitude envelops value.
5. the method for power consuming devices supply power voltage in control transmitting path according to claim 4, is characterized in that, after carrying out the step of Amplitude Compensation to described amplitude envelops value, before carrying out digital-to-analogue conversion to described amplitude envelops value, further comprising the steps of:
When voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than described radio-frequency power amplifier, heighten described amplitude envelops value with unified ratio;
Or, when the figure place of the described amplitude envelops value of binary format exceeds the maximum number of digits that the D/A conversion unit for carrying out digital-to-analogue conversion to described amplitude envelops value can identify, with amplitude envelops value described in unified scale smaller;
Before the voltage of analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to, further comprising the steps of:
Image component in the voltage of analog signal format described in filtering;
When voltage required for the grid that the voltage of the analog signal format that digital-to-analogue conversion draws is less than described radio-frequency power amplifier, the magnitude of voltage of described analog signal format is amplified.
6. the method for power consuming devices supply power voltage in control transmitting path according to claim 1, is characterized in that, further comprising the steps of:
Detect after described i/q signal or described radiofrequency signal input described transmitting path, the grid that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage and described radio-frequency power amplifier receives the time of described radiofrequency signal, and calculate after described i/q signal or described radiofrequency signal input described transmitting path, the time difference between the time that the grid of time and described radio-frequency power amplifier that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage receives described radiofrequency signal;
According to the described time difference, described i/q signal or described radiofrequency signal are postponed, make the voltage of the grid exporting described radio-frequency power amplifier to and/or the voltage of drain electrode and described radiofrequency signal synchronously arrive described radio-frequency power amplifier;
And/or, the method for power consuming devices supply power voltage in this control transmitting path, further comprising the steps of:
Stop powering at least one power consuming devices in described transmitting path when the described i/q signal not needing to launch or described radiofrequency signal input transmitting path;
Described power consuming devices at least comprises described radio-frequency power amplifier.
7. control a device for power consuming devices supply power voltage in transmitting path, it is characterized in that, comprise induction module and control module, wherein:
Described induction module, for when transmitting path is in running order, induction needs the amplitude size of the i/q signal launched or responds to by the amplitude size of the radiofrequency signal after described i/q signal digital-to-analogue conversion;
Described control module, for raising the voltage of the radio-frequency power amplifier grid exported to for amplifying described RF signal power when described amplitude increases, reduces the voltage exporting described radio-frequency power amplifier grid to when described amplitude reduces;
Described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module, wherein:
Described control module, also for raising the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude increases, reduces the voltage exporting the drain electrode of described radio-frequency power amplifier to when described amplitude reduces;
Described induction module, comprises data processing unit and envelope extraction unit, wherein:
Described data processing unit, for when the signal format needing the described i/q signal launched is nonnumeric signal format, is all treated to digital signals format by described i/q signal;
Described envelope extraction unit, for extracting the amplitude envelops value of the described i/q signal of digital signals format, described amplitude envelops value increases with the increase of described amplitude, and reduces with the reduction of described amplitude;
Described induction module, also comprises digital signal processing unit, wherein:
Described digital signal processing unit, for carrying out interpolation and/or filtering process to the described i/q signal of digital signals format;
And/or described envelope extraction unit, also comprises computation subunit, wherein:
Described computation subunit, for bringing the range value of I signal described in the described i/q signal of digital signals format and the range value of described Q signal into formula:
calculate described amplitude envelops value, in described formula:
A is described amplitude envelops value;
The range value of I signal described in the described i/q signal that I is digital signals format;
The range value of i/q signal described in the described i/q signal that Q is digital signals format;
Described control module, comprises D/A conversion unit and voltage output unit, wherein:
Described D/A conversion unit, for carrying out digital-to-analogue conversion to described amplitude envelops value;
Described voltage output unit, the voltage for analog signal format digital-to-analogue conversion drawn exports the grid of described radio-frequency power amplifier to.
8. the device of power consuming devices supply power voltage in control transmitting path according to claim 7, is characterized in that described envelope extraction unit also comprises classification subelement, wherein:
Described classification subelement, for being greater than N numerical value when the described amplitude envelops value gone out according to described formulae discovery, and when being not more than N+1 numerical value, extracts N+1 numerical value as described amplitude envelops value; Wherein:
Described N is natural number, and described N+1 numerical value is greater than described N numerical value, and described N numerical value and described N+1 numerical value are the numerical value in the described amplitude envelops value drawn according to described formulae discovery;
And/or described envelope extraction unit is Matlab or Excel;
And/or described digital signal processing unit is FPGA.
9. the device of power consuming devices supply power voltage in control transmitting path according to claim 7, is characterized in that described envelope extraction unit also comprises storing sub-units and searches subelement, wherein:
Described storing sub-units, for by the range value of the range value of described I signal, described i/q signal and be stored in look-up table according to the described amplitude envelops value that the range value of described I signal, the range value of described Q signal extract;
Describedly search subelement, for finding out described amplitude envelops value according to the range value of described I signal and the range value of described Q signal in described look-up table.
10. the device of power consuming devices supply power voltage in control transmitting path according to claim 7, is characterized in that, described induction module, also comprises the first detecting unit, the second detecting unit, constant computation unit and envelope cancellation unit, wherein:
Described first detecting unit, for detecting the gate voltage curve drawing described radio-frequency power amplifier in advance on described radio-frequency power amplifier;
Described second detecting unit, when in described transmitting path, detection draws the grid input constant voltage to described radio-frequency power amplifier in advance, the corresponding relation between the i/q signal of different amplitude and the power output of described radio-frequency power amplifier;
Described constant computation unit, the gate voltage values linearly changed with described amplitude envelops value of described radio-frequency power amplifier is calculated for the amplitude according to described i/q signal, described gate voltage curve, described corresponding relation, and utilize the gate voltage values that linearly changes with described amplitude envelops value divided by or the actual gate magnitude of voltage that deducts the described radio-frequency power amplifier that described amplitude envelops value detects, draw penalty constant;
Described envelope cancellation unit, for carrying out Amplitude Compensation by the mode described amplitude envelops value be multiplied with described penalty constant or be added to described amplitude envelops value.
The device of power consuming devices supply power voltage in 11. control transmitting paths according to claim 10, it is characterized in that, described induction module, also comprises amplitude adjusting elements,
Described amplitude adjusting elements, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of described radio-frequency power amplifier, heightens described amplitude envelops value with unified ratio; Or,
Described amplitude adjusting elements, when figure place for the described amplitude envelops value when binary format exceeds the maximum number of digits that the described D/A conversion unit for carrying out digital-to-analogue conversion to described amplitude envelops value can identify, with amplitude envelops value described in unified scale smaller;
Described control module, also comprises filter unit and/or amplitude amplifying unit, wherein:
Described filter unit, for the image component in the voltage of analog signal format described in filtering;
Described amplitude amplifying unit, when the voltage for the analog signal format drawn when digital-to-analogue conversion is less than the voltage of the grid of described radio-frequency power amplifier, amplifies the magnitude of voltage of described analog signal format.
In 12. control transmitting paths according to claim 11, the device of power consuming devices supply power voltage, is characterized in that, in this control transmitting path, the device of power consuming devices supply power voltage, also comprises time determination module and Postponement module, wherein:
Described time determination module, for detecting after described i/q signal or described radiofrequency signal input described transmitting path, the grid that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage and described radio-frequency power amplifier receives the time of described radiofrequency signal, and calculate after described i/q signal or described radiofrequency signal input described transmitting path, the time difference between the time that the grid of time and described radio-frequency power amplifier that the grid of described radio-frequency power amplifier and/or drain electrode receive voltage receives described radiofrequency signal;
Described Postponement module, for postponing described i/q signal or described radiofrequency signal according to the described time difference, the voltage of the grid exporting described radio-frequency power amplifier to and/or the voltage of drain electrode and described radiofrequency signal is made synchronously to arrive described radio-frequency power amplifier.
And/or described control module also comprises voltage switching unit, wherein:
Described voltage switching unit, for stopping powering at least one power consuming devices in described transmitting path when the described i/q signal not needing to launch or described radiofrequency signal input transmitting path, described power consuming devices at least comprises described radio-frequency power amplifier and described amplitude amplifying unit;
And/or described amplitude amplifying unit is operational amplifier; And/or described filter unit is LC low pass filter.
13. 1 kinds of emission systems, is characterized in that, comprise the device of power consuming devices supply power voltage in transmitting path and the control transmitting path described in claim 7-12 any one, wherein:
Power consuming devices in described transmitting path comprises D/A converter module, modulation module, antenna and radio-frequency power amplifier described at least one, and described radio-frequency power amplifier is final stage radio-frequency power amplifier and/or gain adjustment module,
Described D/A converter module, for being all converted to analog signal format by the described i/q signal of digital signals format;
Described modulation module, for being modulated to radiofrequency signal by the described i/q signal of analog signal format;
Described radio-frequency power amplifier, for amplifying the power of described radiofrequency signal;
Described emission system is TDD emission system or FDD emission system.
14., according to emission system described in claim 13, is characterized in that, described transmitting path is base station or terminal; And/or described modulation module is frequency mixer; And/or described gain adjustment module comprises at least one driving amplifier and at least one programmable gain amplifier device, wherein:
Described driving amplifier, inputs to described radio-frequency power amplifier after being amplified with specified multiple by the power of described radiofrequency signal;
Described programmable gain amplifier device, for when the power of described radiofrequency signal is unstable, carries out power back-off to described radiofrequency signal, and the power of the described radiofrequency signal after described driving amplifier is amplified meets the power required for described radio-frequency power amplifier;
And/or described final stage radio-frequency power amplifier comprises at least one main amplifier and at least one is from amplifier, described transmitting path also comprises shunt module and closes road module, wherein:
Described shunt module, inputs to described main amplifier and described from amplifier respectively for the described radiofrequency signal after described gain adjustment module being amplified;
Described main amplifier and described from amplifier, all for amplifying power and the amplitude of described radiofrequency signal;
The input power value of described main amplifier and described described radiofrequency signal required when opening from amplifier varies in size;
Described conjunction road module, for by described main amplifier and amplify from amplifier and export described antenna to behind the described radiofrequency signal conjunction road of the output that drain separately from it.
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| CN102510366A (en) * | 2011-11-18 | 2012-06-20 | 北京航天测控技术有限公司 | Microwave signal generating device |
| US9490754B2 (en) * | 2012-09-10 | 2016-11-08 | Innovaradio Sa | High-frequency drain power supply to decrease power dissipation in class-AB power amplifiers |
| WO2015042984A1 (en) * | 2013-09-30 | 2015-04-02 | 华为技术有限公司 | Signal sending method and apparatus, and transmitter |
| CN105515533A (en) * | 2015-11-12 | 2016-04-20 | 中国电子科技集团公司第四十一研究所 | Digital IQ real-time compensation method based on look-up table |
| CN108988897B (en) * | 2018-07-25 | 2021-07-06 | 深圳市桑达无线通讯技术有限公司 | Railway LTE-R wireless communication terminal equipment |
| CN112383951B (en) * | 2020-11-16 | 2022-08-09 | 深圳国人无线通信有限公司 | Base station transmitting equipment and power supply management method thereof |
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| CN101114860A (en) * | 2007-08-17 | 2008-01-30 | 华为技术有限公司 | Method and device for controlling power amplification |
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| CN101114860A (en) * | 2007-08-17 | 2008-01-30 | 华为技术有限公司 | Method and device for controlling power amplification |
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