CN100461624C - Method for optimizing radio-frequency power amplifier and radio-frequency power amplifier system - Google Patents
Method for optimizing radio-frequency power amplifier and radio-frequency power amplifier system Download PDFInfo
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- CN100461624C CN100461624C CNB2005100537421A CN200510053742A CN100461624C CN 100461624 C CN100461624 C CN 100461624C CN B2005100537421 A CNB2005100537421 A CN B2005100537421A CN 200510053742 A CN200510053742 A CN 200510053742A CN 100461624 C CN100461624 C CN 100461624C
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Abstract
This invention discloses a method for optimizing RF power amplifier including: a power amplifier receives an actual working frequency point to adjust the performance parameters of the power amplifier. This invention discloses a RF power amplifier system, which gets information of actual working frequency points by a baseband then to be transmitted to a power amplifying control unit of the power amplifier via an interface circuit, in which, the power amplifying control unit determines the most suitable working performance parameter based on the point information to optimize the input and output property of the power amplifier.
Description
Technical field
The present invention relates to the radio-frequency (RF) power amplification technology, refer to a kind of method and radio-frequency power amplifier system that optimizes radio-frequency power amplifier especially.
Background technology
Abbreviate radio-frequency power amplifier as power amplifier in the literary composition.
In wireless base system, power amplifier is to be used for the small-signal of sender is amplified to the equipment of certain power.The function of power amplifier is exactly to try one's best the radiofrequency signal from sender to be amplified undistortedly.Below abbreviate power amplifier as power amplifier.
Fig. 1 is the schematic diagram that the prior art power amplifier is used in wireless base system; its intermediate power amplifier mainly is made up of amplifier module 12, gain control circuit 13, alarm protective circuit 14, linearization block 15 and 16 5 modules of central control module, wherein gain control circuit 13, alarm protective circuit 14, linearization block 15 and central control module 16 can be called the power amplifier control unit.Function to each module is described below:
Gain control circuit 13 is used for gain and gain flatness are controlled; The operating state of 14 pairs of power amplifiers of alarm protective circuit is monitored; Linearization block 15 is used for fixing the setting and the distortion detection of pilot tone; Amplifier module 12 is optimized according to adjusting parameter pair amplifier service behaviour from the performance of gain control circuit 13 and linearization block 15, then the input radio frequency signal is amplified back output, the input of amplifier module 12 is signal input parts of power amplifier; Central control module 16 is used to coordinate cooperating between above-mentioned each module.
In wireless base system, as shown in Figure 1, the power amplifier of prior art is such to radio frequency Signal Processing process: 10 pairs of signals of base band and control system generation baseband signal of encoding, sender 11 will be modulated to from the baseband signal of base band and control system 10 on intermediate frequency or the radio frequency, then intermediate frequency or radiofrequency signal are sent to amplifier module 12, amplifier module 12 pairs of inputs intermediate frequency or radiofrequency signal are amplified back output.
The amplification quality of intermediate frequency or radiofrequency signal depends on the performance parameter of power amplifier, and the performance parameter of power amplifier and bandwidth are closely related.
Bandwidth constraints is the power amplifier inherent characteristic, and power amplifier performance parameters such as the power gain of power amplifier, linearity, efficient are all closely related with bandwidth.Gain flatness with power amplifier is an example, if the bandwidth of operation of power amplifier is very wide, and the gain flatness want some doing, the low side gain high-end gain high, frequency that generally is frequency is low, the wide more difference of bandwidth is big more, causes the poor linearity of power amplifier, thereby causes the amplification of radiofrequency signal to produce distortion.
In order to reach the undistorted amplification to radiofrequency signal, power amplifier need be optimized its performance parameter.Generally speaking, in certain bandwidth range, by the debugging of power amplifier being satisfied the performance demands of bandwidth to power amplifier.Such as compensation for gain flatness, can scan the gain of power amplifier and the corresponding relation of frequency earlier in when debugging, obtain frequency information after, can reach improvement by adjustment to gain control circuit to gain flatness.If bandwidth is too wide, can only get compromisely to aspects such as power gain, linearity, efficient, still, will certainly cause the performance of power amplifier not give full play to like this.
Along with the increase of wirelessly transmitting information amount, the bandwidth that wireless communication system distributes is increasing, and this just requires power amplifier to satisfy the particular characteristic index in wideer bandwidth.And for most of wireless communication systems, each power amplifier is often only used the sub-fraction of distributing in the bandwidth in actual environment for use, if can be optimized at specific power amplifier individuality, just might improve the power amplifier performance.
At present, have two kinds of methods to solve because the uncomfortable problem that bandwidth brings for the application of power amplifier:
A kind of method is the method that adopts fixing pilot tone to come the practical application to power amplifier to be optimized.Power amplifier develops generally all specific purposes, and such as the GSM power amplifier of 900MHz, prescribed bandwidth is 35MHz, and this frequency band promptly is known by the Radio Management Commission's regulation.This method is provided with fixedly pilot tone at the band outward flange of allocated frequency band, by power gain, linearity, the phase place adjustment of power amplifier are controlled in the fixing extraction of pilot tone output parameter, thereby power amplifier work state is met the demands as far as possible.
Here fixedly pilot tone can be provided with in the linearization block 15 of power amplifier, in the prior art, at different power amplifiers, all pilot source is provided with relevant fixedly pilot frequency information, when this power amplifier uses, after central control module 16 obtains fixedly pilot frequency information, pilot circuit phase-locked loop (PLL) partly in the control linearization block 15, PLL is locked in fixedly on the pilot tone, and so fixedly pilot tone has just set.The fixedly pilot tone that linearization block 15 will set sends to amplifier module 12 and amplifies, central control module 16 extracts fixedly pilot tone output parameter by linearization block 15, amplifier module 12 then, and controls the parameter adjustments such as power gain, linearity, phase place of power amplifier according to pilot tone output parameter ride gain control circuit 13.
Fixedly pilot tone is arranged on the outer place near the regulation frequency range of regulation frequency range, and is good more the closer to band edge from effect on the one hand, because get over the characteristic of energy actual response working frequency range like this; On the other hand, if fixedly pilot tone has been set in the band, will cause interference to useful signal, because working frequency range is one section frequency range of not predicting in the regulation frequency range.As seen, this method is for feature in the actual response band of trying one's best, and power amplifier will comprise that fixedly the pilot tone place accomplishes that the relation of importing and exporting is smooth as far as possible in whole regulation frequency range, so just must increase the adjustment difficulty, improved processing cost, also still compromise to some extent on performance in addition.The more important thing is that interior for being with, this is a unsettled open loop control, if the power amplifier characteristic changes, fixedly can't reflect on the pilot tone.
Another kind method is the situation of no pilot tone.This method satisfies performance requirements such as the gain of regulation frequency range, linearity by producing debugging, utilizes temperature-compensating to eliminate variations in temperature, and advantage is transparent fully to system.This method can be saved and be used to be provided with the fixedly pilot circuit of pilot tone in the linearization block 15, thereby has reduced Material Cost, has also avoided pilot tone to bring spuious possibility.But this method generally can only be used in smaller bandwidth, operating ambient temperature changes in the system little, that requirement is lower, otherwise debugging is very complicated, and processing cost is very high, and performance also can't guarantee.
From two kinds of methods that power amplifier is optimized of prior art as can be seen, or be exactly the second method that adopts manual debugging fully, or be exactly to adopt a fixedly pilot tone first method of coming the performance to power amplifier to be optimized.Adopt the method for manual debugging, obviously be subjected to environment and artificial factor is bigger, such as because the temperature in when debugging and the ambient temperature difference of power amplifier The field, can cause some influences to the good parameter of debugging at that time, thereby have influence on the serviceability of power amplifier, and this method can only be fit to the occasion that bandwidth is narrower, requirement is lower; If adopt the fixedly method of pilot tone be set, can save complicated debugging work, but this method is a kind of open loop control mode, promptly when the real work frequency range changed, fixedly pilot tone was to produce any regulating action to the service behaviour of power amplifier.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of optimizing power amplifier, and this method can be finished the dynamic optimization to power amplifier.Promptly this method can be provided with the pilot tone of power amplifier flexibly according to actual operating frequency, thereby realizes the dynamic adjustments to the performance parameter of power amplifier.
Another object of the present invention is to provide a kind of system of power amplifier, this system can increase at hardware makes power amplifier obtain higher service behaviour under few situation.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of optimizing radio-frequency power amplifier, this method may further comprise the steps:
A. radio-frequency power amplifier receives the actual operating frequency point;
B. radio-frequency power amplifier enlarges the frequency range processing to the actual operating frequency point that receives, according to the Frequency point information setting pilot tone after handling, and according to this pilot signal adjustment radio-frequency power amplifier performance parameter.
In the steps A, after radio-frequency power amplifier received actual operating frequency point, this method also comprised: the actual operating frequency dot information that storage receives.
The working frequency range register is set in radio-frequency power amplifier, the described actual operating frequency dot information that receives is stored in the working frequency range register.
Enlarging the frequency range processing described in the step B is actual operating frequency point to be increased or reduces the assigned frequency point.
The method that pilot tone is set described in the step B comprises:
Send the Frequency point signal after handling in the original linearization block of radio-frequency power amplifier pilot circuit phase-locked loop partly, make pll lock on pilot tone.
The method of according to pilot signal the radio frequency power amplifier performance parameter being adjusted among the step B:
The pilot signal that sets is amplified, extract the pilot tone output parameter after amplifying then, and according to the adjustment of the gain of pilot tone output parameter control power amplifier, gain flatness, phase parameter.
A kind of method of optimizing radio-frequency power amplifier is divided into some little frequency ranges with the radio-frequency power amplifier assigned frequency, and the corresponding performance parameter that radio-frequency power amplifier is adjusted is stored in the calibration chart register on each the little frequency range after the storage division; This method also comprises:
B. radio-frequency power amplifier receives the actual operating frequency point;
B. radio-frequency power amplifier is selected the performance parameter of the radio-frequency power amplifier performance parameter corresponding with the little frequency range of the actual operating frequency dot information coupling of storing as current radio-frequency power amplifier.Also comprise before this method: the calibration chart register is set in radio-frequency power amplifier; The performance parameter that radio-frequency power amplifier is adjusted corresponding on the little frequency range of after the described division each is stored in the calibration chart register
A kind of system of radio-frequency power amplifier, this system comprise base band and control system, radio-frequency power amplifier, and wherein radio-frequency power amplifier comprises power amplifier control unit, amplifier module, and this system also comprises:
First interface circuit: be positioned at base band and control system, be used for sending the actual operating frequency point to radio-frequency power amplifier;
Second interface circuit: be positioned at radio-frequency power amplifier, be used to receive actual operating frequency point from base band and control system;
The actual operating frequency dot information from first interface circuit that second interface circuit will receive sends to the power amplifier control unit;
The power amplifier control unit receives the actual operating frequency dot information from second interface circuit, this actual operating frequency point is enlarged frequency range to be handled, according to the Frequency point information setting pilot tone after handling, and adjust according to this pilot signal pair amplifier module performance parameter;
Amplifier module receives from the adjusted performance parameter of power control unit and according to this performance parameter the frequency signal from the outside is amplified back output.
Described power amplifier control unit comprises:
Central control module: receive actual operating frequency point, this actual operating frequency point is enlarged frequency range handle, and the Frequency point information after will handling sends to linearization block from second interface circuit;
Linearization block: receive from the Frequency point information after the central control module processing, and, then the pilot signal that sets is sent to amplifier module and amplify according to this Frequency point information setting pilot tone;
Central control module extracts pilot tone by linearization block, amplifier module and amplifies output parameter, and this pilot tone amplification output parameter is sent to gain control circuit;
Gain control circuit: receive the pilot tone amplification output parameter that central control module extracts, and amplify output parameter according to this pilot tone radio-frequency power amplifier gain and gain flatness are controlled.
Described power amplifier control unit also comprises: the working frequency range register: the actual operating frequency dot information that receives from central control module also is stored in this locality with this actual operating frequency dot information.
A kind of system of radio-frequency power amplifier, this system comprise base band and control system, radio-frequency power amplifier, and wherein radio-frequency power amplifier comprises power amplifier control unit, amplifier module, and this system also comprises:
First interface circuit: be positioned at base band and control system, be used for sending the actual operating frequency point to radio-frequency power amplifier;
Second interface circuit: be positioned at radio-frequency power amplifier, be used to receive actual operating frequency point from base band and control system;
The actual operating frequency dot information from first interface circuit that second interface circuit will receive sends to the power amplifier control unit;
The power amplifier control unit receives the actual operating frequency dot information from second interface circuit, and radio-frequency power amplifier is selected the performance parameter of the radio-frequency power amplifier performance parameter corresponding with the little frequency range of the actual operating frequency dot information coupling of storing as current radio-frequency power amplifier.
Amplifier module receives from the adjusted performance parameter of power control unit and according to this performance parameter the frequency signal from the outside is amplified back output.
Described power amplifier control unit comprises:
Calibration chart register: the corresponding parameter that radio-frequency power amplifier is optimized on each little frequency range of dividing in the storage radio-frequency power amplifier assigned frequency;
Central control module is according to the actual operating frequency point that receives, select the performance parameter of the corresponding radio-frequency power amplifier performance parameter of the little frequency range of mating, and this parameter is sent to gain control circuit through central control module as current radio-frequency power amplifier with the actual operating frequency dot information of storage;
Gain control circuit receives the described performance parameter from central control module, and according to this performance parameter radio-frequency power amplifier gain and gain flatness is controlled.
As seen from the above technical solutions, the method and the power amplifier system of this optimization power amplifier of the present invention, obtain concrete operating frequency dot information earlier, and sending the operating frequency dot information that obtains the power amplifier control unit of power amplifier to by interface circuit, power amplifier determines that according to concrete operating frequency dot information only performance parameter comes the input-output characteristic of power amplifier is optimized.The present invention has realized the dynamic optimization to power amplifier by closed-loop control, makes power amplifier be applicable to the variation of different operating occasion operating frequency more neatly, and has all embodied the good characteristic of power amplifier in different workplaces as far as possible.
Description of drawings
Fig. 1 is the schematic diagram that the prior art power amplifier is used in wireless base system;
Fig. 2 is the system schematic of preferred embodiment one of the present invention;
Fig. 3 is the method flow diagram of preferred embodiment one of the present invention;
Fig. 4 is the method flow diagram of preferred embodiment two of the present invention.
Embodiment
Core concept of the present invention is: power amplifier obtains earlier concrete operating frequency dot information, again according to concrete operating frequency dot information, determines that only power amplifier performance parameter comes the input-output characteristic of power amplifier is optimized.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
Preferred embodiment one:
Fig. 2 is the system schematic of preferred embodiment one of the present invention; preferred embodiment one in power amplifier except comprising existing central control module 26, gain control circuit 23, alarm protective circuit 24, linearization block 25 and amplifier module 22; wherein gain control circuit 23, alarm protective circuit 24, linearization block 25 and central control module 26 can be called the power amplifier control unit; this system also comprises interface circuit 29; in the power amplifier control unit, also comprise register 1, in addition the interface circuit 201 that in base band and control module 20, also comprises.Register 1 is made up of working frequency range register 28 and calibration chart register 27 in the present embodiment.
The corresponding parameter that power amplifier is optimized on each little frequency range of wherein, dividing in the storage power amplifier assigned frequency in the calibration chart register 27; Storage actual operating frequency dot information in the working frequency range register 28; Interface circuit 29 is corresponding with interface circuit 201, said correspondingly is meant that the type and the communication protocol of 201 two interface circuits of interface circuit 29 and interface circuit are consistent here; And interface circuit 201 is connected with interface circuit 29 by control line, promptly between base band and control module 20 and power amplifier, set up annexation, by this annexation, base band and control module 20 send to power amplifier with the actual operating frequency dot information and are stored in the working frequency range register 28.
Have any to need to illustrate, if idle communication interface is all arranged in base band and control module 20 and power amplifier, and type is consistent with communication protocol, then only needs to add control line and corresponding data transmission and receive to handle to get final product between two interfaces; In addition, if interface circuit 29 and interface circuit 201 all adopt wireless transmission method, such as: infrared communication then can not connect control line.
Below in conjunction with Fig. 3 the concrete job step of preferred embodiment one of the present invention is described.Suppose that interface circuit 29 and interface circuit 201 all adopt the serial communication mode, adopt control line to connect between these two interface circuits.
Flow chart in conjunction with Fig. 3 preferred embodiment one of the present invention, this embodiment will be sent to the actual operating frequency dot information of central control module 26 by interface circuit 201 by control line, mate with the power amplifier performance adjustment information that is stored in the calibration chart register 27, select the parameter that is optimized as pair amplifier module 22 near the pairing performance adjustment information of that band frequency of actual operating frequency dot information.Be implemented as follows:
Step 300: the performance parameter that power amplifier is optimized corresponding on each little frequency range of dividing in the power amplifier assigned frequency is stored in the calibration chart register 27.
This step is to finish in the power amplifier debug phase, calibrate by external power meter or network analyzer, for example: at first the assigned frequency of power amplifier is divided into little frequency range one by one, in each little frequency range, choose a median and input to power amplifier as input frequency signal, by the characteristic of the output signal after detect amplifying, performance parameters such as the gain of the power amplifier when this input frequency signal, phase place are adjusted.Determining power amplifier optimum performance parameters corresponding on this Frequency point, and after setting up one-to-one relationship between the power amplifier optimum performance parameters adjusted and this frequency band, be stored in the calibration chart register.Repeat said process, just the power amplifier optimum performance parameters of each little frequency range correspondence of division can be stored in the calibration chart register 27, and and the frequency band at these parameter places between set up one-to-one relationship.
Here, can react this corresponding relation, as being that database table set up in index with frequency band and power amplifier performance parameter collection by setting up database table.
In addition, the choosing of little frequency range length depends on that the power amplifier application scenario decides the power amplifier performance requirement, in the higher occasion of performance requirement, little frequency range can be obtained shortly, and promptly the little frequency range of dividing in the assigned frequency for certain power amplifier is understood any more; Otherwise little frequency range then obtains length and gets final product a bit.
Step 301:, send the actual operating frequency point to power amplifier, and be stored in the working frequency range register 28 by the communication between interface circuit 29 and the interface circuit 201.
In this step, for example: power amplifier is applied in the wireless base system, by base station controller the actual operating frequency dot information is handed down to base band and control system so, base band and control system send to power amplifier by interface circuit 201 with the actual operating frequency dot information that obtains, and power amplifier is stored in the actual operating frequency dot information of receiving in the working frequency range register 28.
Step 302: according to being stored in actual operating frequency dot information in the working frequency range register 28, itself and the little frequency range of regulation that is stored in the division in the calibration register 27 are mated, a frequency band of selecting Frequency point information to fall into is with the power amplifier performance parameter of this frequency band correspondence parameters optimization as current power amplifier.
Preferred embodiment one is that the power amplifier performance parameter is stored in a kind of employing in advance, selecting performance parameter to the mode that power amplifier is optimized according to the actual operating frequency point then, is that the present invention realizes wherein a kind of execution mode that power amplifier is optimized according to actual operating frequency.
Preferred embodiment two:
System schematic referring to the preferred embodiment of the present invention of Fig. 2, preferred embodiment two is on the basis of preferred embodiment one shown in Figure 2, removing calibration chart register 27 gets final product, promptly register 1 is made up of working frequency range register 28 in the present embodiment, and the working frequency range register is used to store the actual operating frequency dot information equally here.
Below in conjunction with Fig. 4 the concrete job step of preferred embodiment two of the present invention is described.Suppose that interface circuit 29 and interface circuit 201 all adopt the serial communication mode, adopt control line to connect between these two interface circuits.
Flow chart in conjunction with Fig. 4 preferred embodiment two of the present invention, this embodiment is provided with pilot tone according to the actual operating frequency dot information, according to pilot frequency information power amplifier is adjusted then, and with adjusted performance parameter as the current parameter that power amplifier is optimized, be implemented as follows:
Step 400:, send the actual operating frequency point to power amplifier, and be stored in the working frequency range register 28 by the communication between interface circuit 29 and the interface circuit 201.
Step 401: the actual operating frequency dot information according to storage is provided with pilot tone.
In this step, for the pilot tone that makes setting outside the real work frequency range and near the real work band edge, so that feature in the actual response band better, the actual operating frequency dot information that central control module 26 will be stored in the working frequency range register 28 enlarges the frequency range processing, Frequency point information such as Frequency point information that increases specified quantity or minimizing specified quantity gets final product, to calculate good Frequency point information sends pilot circuit part in the linearization block 25 to as pilot frequency information phase-locked loop (PLL) then, make on the actual operating frequency dot information after PLL is locked in processing, pilot tone has just set like this.
In this step,, make on the actual operating frequency dot information after PLL is locked in processing calculating the phase-locked loop (PLL) that good Frequency point information sends pilot circuit part in the linearization block 25 to.This part belongs to the prior art content.
Step 402: power amplifier is optimized according to the pilot tone that sets.
In this step, central control module 26 sends the pilot tone that sets to amplifier module 22, amplification by 22 pairs of pilot signals of amplifier module, central control module 26 extracts the pilot tone output parameter by linearization block 25, amplifier module 22 then, and controls the isoparametric adjustment of gain, gain flatness, phase place of power amplifier according to pilot tone output parameter ride gain control circuit 23.This part content belongs to prior art.
The pilot tone of preferred embodiment two is provided with in actual operating frequency point vicinity, and the operating state of pilot tone can be reacted the operating state of actual operating frequency preferably so, promptly by pilot tone to the optimization that power amplifier carries out, concerning actual operating frequency, also be fit to.Like this, also just reached the purpose that the present invention is optimized power amplifier.
From above-mentioned two embodiment as can be seen, the present invention is by communicating by letter between interface circuit 29 and the interface circuit 201, base band and control system send the actual operating frequency dot information to power amplifier, and power amplifier carries out parameter optimization according to the actual operating frequency dot information to power amplifier, reaching the optimum Working of power amplifier, thereby further guaranteed the undistorted amplification of the radiofrequency signal of input power amplifier to a greater degree.
Illustrate that some power amplifier one powers on when using, and just can at first adopt the inventive method that the performance parameter of power amplifier is optimized, and then enter the normal operating conditions of power amplifier.
In the power amplifier operate as normal, can regularly extract, compare the actual operating frequency dot information, if the actual operating frequency point changes, then again performance parameter is optimized; Also can adopt the mode of interruption, when actual operating frequency changes, enter break in service and handle, the performance parameter to power amplifier is optimized again in break in service is handled.So as can be seen, the present invention is the processing method that a kind of closed-loop dynamic power amplifier is optimized, and has improved the adaptive capacity after power amplifier changes to the workplace.
In addition, if the internal storage memory capacity of central control module 26 is enough big, the internal storage that also can utilize central control module 26 is as working frequency range register and calibration chart register.
System and method of the present invention is equally applicable in the fields such as microwave, satellite communication the optimization to power amplifier.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (13)
1. a method of optimizing radio-frequency power amplifier is characterized in that, this method may further comprise the steps:
A. radio-frequency power amplifier receives the actual operating frequency point;
B. radio-frequency power amplifier enlarges the frequency range processing to the actual operating frequency point that receives, according to the Frequency point information setting pilot tone after handling, and according to this pilot signal adjustment radio-frequency power amplifier performance parameter.
2. method according to claim 1 is characterized in that, in the steps A, after radio-frequency power amplifier received actual operating frequency point, this method also comprised: the actual operating frequency dot information that storage receives.
3. method according to claim 2 is characterized in that: the working frequency range register is set in radio-frequency power amplifier, the described actual operating frequency dot information that receives is stored in the working frequency range register.
4. method according to claim 1 is characterized in that, enlarging the frequency range processing described in the step B is actual operating frequency point to be increased or reduces the assigned frequency point.
5. according to claim 1 or 4 described methods, it is characterized in that the method that pilot tone is set described in the step B comprises:
Send the Frequency point signal after handling in the original linearization block of radio-frequency power amplifier pilot circuit phase-locked loop partly, make pll lock on pilot tone.
6. method according to claim 1 is characterized in that, the method for according to pilot signal the radio frequency power amplifier performance parameter being adjusted among the step B:
The pilot signal that sets is amplified, extract the pilot tone output parameter after amplifying then, and according to the adjustment of the gain of pilot tone output parameter control power amplifier, gain flatness, phase parameter.
7. a method of optimizing radio-frequency power amplifier is characterized in that, the radio-frequency power amplifier assigned frequency is divided into some little frequency ranges, and the corresponding performance parameter that radio-frequency power amplifier is adjusted on storage each little frequency range after dividing; This method also comprises:
A. radio-frequency power amplifier receives the actual operating frequency point;
B. radio-frequency power amplifier is selected the performance parameter of the radio-frequency power amplifier performance parameter corresponding with the little frequency range of the actual operating frequency dot information coupling of storing as current radio-frequency power amplifier.
8. method according to claim 7 is characterized in that, also comprises before this method: the calibration chart register is set in radio-frequency power amplifier;
The performance parameter that radio-frequency power amplifier is adjusted corresponding on the little frequency range of after the described division each is stored in the calibration chart register.
9. the system of a radio-frequency power amplifier, this system comprise base band and control system, radio-frequency power amplifier, and wherein radio-frequency power amplifier comprises power amplifier control unit, amplifier module, it is characterized in that, this system also comprises:
First interface circuit: be positioned at base band and control system, be used for sending the actual operating frequency point to radio-frequency power amplifier;
Second interface circuit: be positioned at radio-frequency power amplifier, be used to receive actual operating frequency point from base band and control system;
The actual operating frequency dot information from first interface circuit that second interface circuit will receive sends to the power amplifier control unit;
The power amplifier control unit receives the actual operating frequency dot information from second interface circuit, this actual operating frequency point is enlarged frequency range to be handled, according to the Frequency point information setting pilot tone after handling, and adjust according to this pilot signal pair amplifier module performance parameter;
Amplifier module receives from the adjusted performance parameter of power control unit and according to this performance parameter the frequency signal from the outside is amplified back output.
10. system according to claim 9 is characterized in that, described power amplifier control unit comprises:
Central control module: receive actual operating frequency point, this actual operating frequency point is enlarged frequency range handle, and the Frequency point information after will handling sends to linearization block from second interface circuit;
Linearization block: receive from the Frequency point information after the central control module processing, and, then the pilot signal that sets is sent to amplifier module and amplify according to this Frequency point information setting pilot tone;
Central control module extracts pilot tone by linearization block, amplifier module and amplifies output parameter, and this pilot tone amplification output parameter is sent to gain control circuit;
Gain control circuit: receive the pilot tone amplification output parameter that central control module extracts, and amplify output parameter according to this pilot tone radio-frequency power amplifier gain and gain flatness are controlled.
11. system according to claim 10 is characterized in that, described power amplifier control unit also comprises: the working frequency range register: the actual operating frequency dot information that receives from central control module also is stored in this locality with this actual operating frequency dot information.
12. the system of a radio-frequency power amplifier, this system comprise base band and control system, radio-frequency power amplifier, wherein radio-frequency power amplifier comprises power amplifier control unit, amplifier module, it is characterized in that, this system also comprises:
First interface circuit: be positioned at base band and control system, be used for sending the actual operating frequency point to radio-frequency power amplifier;
Second interface circuit: be positioned at radio-frequency power amplifier, be used to receive actual operating frequency point from base band and control system;
The actual operating frequency dot information from first interface circuit that second interface circuit will receive sends to the power amplifier control unit;
The power amplifier control unit receives the actual operating frequency dot information from second interface circuit, and radio-frequency power amplifier is selected the performance parameter of the radio-frequency power amplifier performance parameter corresponding with the little frequency range of the actual operating frequency dot information coupling of storing as current radio-frequency power amplifier.
Amplifier module receives from the adjusted performance parameter of power control unit and according to this performance parameter the frequency signal from the outside is amplified back output.
13. system according to claim 12 is characterized in that, described power amplifier control unit comprises:
Calibration chart register: the corresponding parameter that radio-frequency power amplifier is optimized on each little frequency range of dividing in the storage radio-frequency power amplifier assigned frequency;
Central control module is according to the actual operating frequency point that receives, select the performance parameter of the corresponding radio-frequency power amplifier performance parameter of the little frequency range of mating, and this parameter is sent to gain control circuit through central control module as current radio-frequency power amplifier with the actual operating frequency dot information of storage;
Gain control circuit receives the described performance parameter from central control module, and according to this performance parameter radio-frequency power amplifier gain and gain flatness is controlled.
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| US8975961B2 (en) * | 2013-05-24 | 2015-03-10 | Texas Instruments Incorporated | Power amplifier control circuits |
| CN106234557A (en) * | 2016-10-10 | 2016-12-21 | 成都沃特塞恩电子技术有限公司 | A kind of radio frequency power source and radio frequency thawing apparatus |
| CN108449053B (en) * | 2018-02-28 | 2022-05-03 | 惠州Tcl移动通信有限公司 | Method, storage medium and equipment for cooperative setting of radio frequency power amplifier and converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040224648A1 (en) * | 2002-03-21 | 2004-11-11 | Sugar Gary L. | Efficiency of power amplifers in devices using transmit beamforming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040224648A1 (en) * | 2002-03-21 | 2004-11-11 | Sugar Gary L. | Efficiency of power amplifers in devices using transmit beamforming |
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