CN208572040U - Broadband analogue pre-distorting power amplifier device and transmitter - Google Patents
Broadband analogue pre-distorting power amplifier device and transmitter Download PDFInfo
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Abstract
The utility model proposes a kind of broadband analogue pre-distorting power amplifier device and transmitters, including the first coupler, broadband analogue predistortion IC chip, delayer, the second coupler and broadband Doherty amplifier；First coupler is connected with delayer and broadband analogue predistortion IC chip, and the radio-frequency input signals that the first coupler receives is input to delayer and broadband analogue predistortion IC chip；The output end of delayer and the signal output end of broadband analogue predistortion IC chip are connected to the input terminal of the second coupler, the output end of second coupler is connect with the signal input part of broadband Doherty amplifier, by when the radio-frequency input signals delayed and treated that the pre- correcting signal that loses is coupled and is sent to the input terminal of broadband Doherty amplifier through broadband analogue predistortion IC chip；Broadband Doherty amplifier exports amplified signal.Realize integrated level height, miniaturization, ultra wide band, multicarrier, High Linear, high efficiency, technically simpleization broadband analogue pre-distorting power amplifier device.
Description
Technical field
The utility model relates to wireless mobile telecommunication technology fields more particularly to a kind of broadband analogue pre-distorted power to amplify
Device device and transmitter.
Background technique
With global radio communications field high speed development, the arrival of mobile internet era, consumer has been not content with existing
There is networking speed, higher message transmission rate and network stabilization are the target that various circles of society are pursued jointly, the 5G communication technology
It comes into being.5G technology is different from 3G and 4G technology: 3G technology shares tetra- kinds of WCDMA, TD_SCDMA, CDMA2000 and WIMAX
Communication standard；Although 4G technology has unified LTE signal, single carrier maximum bandwidth also only has 20MHz, so practical 4G communication network
It is middle to be communicated using multi-carrier broadband；And multiple subcarriers are aggregated into wide frequency for using the OFDM carrier aggregation technology of NR by 5G
Spectrum, can reach the polymerization carrier bandwidths of 100MHz.This undoubtedly to the sampling of the linearization technique of power amplifier and will offset band
Width is put forward higher requirements and technical bottleneck.
Currently, the most important linearization technique of power amplifier be output power rollback method (Output Power Back Off), it is preceding
Feedback method (Feed Forward) and pre-distortion method (Pre-distortion), pre-distortion method divide digital pre-distortion and the pre- mistake of simulation again
Very.And different linearization techniques respectively has advantage and disadvantage, only broadband linear improve dimension, Power back, feed forward approach and
Analog predistortion technology is all difficult to break-through skill bottleneck；And DPD linearization technique is the most fast technology of sustainable development in recent years.It cuts
It only arrives currently, in addition to the DPD linearisation that the world-class major company such as Huawei, Ericsson has the ability to achieve over 100MHz bandwidth offsets
Ability.General small and medium size companies can not all accomplish that the slightly more strong company of technical strength achieves over the DPD of the bandwidth within 90MHz
Linearisation offsets ability.Moreover, DPD complicated technology realization, product development cost height higher to PA development teams technical requirements；
4G and 5G communication network is more focused on for small-power intensively arranges net, DPD cell power consumption is bigger than normal, to the efficiency of small-power PA
Promotion has limitation.
Utility model content
In view of the above problems, the utility model proposes a kind of broadband analogue pre-distorting power amplifier device and transmittings
Machine, realize integrated level height, miniaturization, high efficiency, technically simpleization broadband analogue pre-distorting power amplifier device.
The utility model embodiment provides a kind of broadband analogue pre-distorting power amplifier device, including the first coupling
Device, broadband analogue predistortion IC chip, delayer, the second coupler and broadband Doherty amplifier；
The output end of first coupler respectively with the input terminal of the delayer and the broadband analogue predistortion IC
The signal input part of chip is connected, and the radio-frequency input signals received is separately input to the delayer by first coupler
With the broadband analogue predistortion IC chip；The signal of the output end of the delayer and the broadband analogue predistortion IC chip
Output end is connected respectively to the input terminal of second coupler, the output end of second coupler and the broadband
The signal input part of Doherty amplifier connects, and the radio frequency through delaying when the delayer is inputted letter by second coupler
Number and through the broadband analogue predistortion IC chip, treated that the pre- correcting signal that loses is coupled, and the signal after coupling is sent out
It is sent to the input terminal of the broadband Doherty amplifier；The broadband Doherty amplifier carries out amplified signal defeated
Out.
It optionally, further include third coupler, the input terminal of the third coupler and the broadband Doherty amplifier
Output end connection, the output end of the third coupler is connect with the broadband analogue predistortion IC chip, by the width
The amplified signal output of band Doherty amplifier, and output signal is fed back to the broadband analogue predistortion IC chip.
It optionally, further include the 4th coupler and automatic level control circuit；
The output end of 4th coupler is connect with the input terminal of the automatic level control circuit, the automatic electric-level
The output end of control circuit is connect with the input terminal of first coupler, and the automatic level control circuit is used for described the
The radio-frequency input signals that four couplers receive carries out power adjustment, and first coupling that signal adjusted is input to
Device.
It optionally, further include controller, the controller output end and automatic electric-level with the 4th coupler respectively
The control terminal of control circuit is connected, for controlling the auto level control electricity according to the output signal of the 4th coupler
Road.
Optionally, the controller is connect by Serial Peripheral Interface (SPI) with the broadband analogue predistortion IC chip.
Optionally, automatic growth control electricity is additionally provided between second coupler and broadband Doherty amplifier
Road, the controller control terminal phase with the output end of the third coupler and the automatic gain control circuit respectively
Even, the automatic gain control circuit is used to control the automatic growth control electricity according to the output signal of the third coupler
Road.
Optionally, the controller is also connected with the control terminal of the broadband Doherty amplifier.
It optionally, further include the power amplification being arranged between the automatic level control circuit and first coupler
Pipe.
It optionally, further include being arranged between the automatic gain control circuit and the broadband Doherty amplifier
Power amplifier tube.
The another aspect of the utility model additionally provides a kind of transmitter, including broadband analogue predistortion function as described above
Rate amplifier device.
Broadband analogue pre-distorting power amplifier device and transmitter provided by the embodiment of the utility model, by broadband analogue
Predistortion IC chip and broadband Doherty amplifier combine, and it is instantaneous to can be realized broad band multicarrier LTE or 5G broadband 100MHz
The carrier signal of signal bandwidth is amplified and linearization process, obtain a kind of ultra wide band, multicarrier, High Linear, high efficiency, it is low at
Originally, the broad band multicarrier LTE power amplifier or broadband 5G power amplifier of miniaturization.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and being implemented in accordance with the contents of the specification, and in order to allow above and other purpose, feature of the utility model
It can be more clearly understood with advantage, it is special below to lift specific embodiment of the present utility model.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of broadband analogue pre-distorting power amplifier device of the utility model embodiment；
Fig. 2 is a kind of structural representation of broadband analogue pre-distorting power amplifier device of another embodiment of the utility model
Figure；
Fig. 3 is a kind of structural representation of broadband analogue pre-distorting power amplifier device of another embodiment of the utility model
Figure；
Fig. 4 is a kind of structural representation of broadband analogue pre-distorting power amplifier device of another embodiment of the utility model
Figure；
Fig. 5 is a kind of structural representation of broadband analogue pre-distorting power amplifier device of another embodiment of the utility model
Figure.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being used in the specification of the utility model
Wording " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or
Add other one or more features, integer, step, operation, element, component and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.Also
It should be understood that those terms such as defined in the general dictionary, it should be understood that have and the context of the prior art
In the consistent meaning of meaning, and unless otherwise will not be explained in an idealized or overly formal meaning by specific definitions.
Based on the disadvantage of linearization technique in the prior art, the utility model is by analog IC pre-distortion technology and broadband
Doherty technology combines, and carries out line for the carrier signal of the broadband broad band multicarrier LTE or 5G 100MHz instantaneous signal bandwidth
Propertyization processing, obtains a kind of High Linear, high efficiency, the broadband analogue predistortion of the broad band multicarrier LTE of low cost or broadband 5G
Power amplifier apparatus solves the bottleneck of other linearization techniques.It is pre- that the utility model provides a kind of Wideband simulation
Distortion power amplifier device, replacement technique complexity, the feedforward of higher cost and DPD technology, realize that integrated level is high, minimize,
The multicarrier of technically simpleization, ultra wide band pre-distorted power amplification system.
Fig. 1 diagrammatically illustrates a kind of knot of broadband analogue pre-distorting power amplifier device of the utility model embodiment
Structure schematic diagram.Referring to Fig.1, broadband analogue pre-distorting power amplifier device provided by the embodiment of the utility model, specifically includes
First coupler 101, broadband analogue predistortion IC chip 102, delayer 103, the second coupler 104 and broadband Doherty are put
Big device 105.
Wherein, the output end of the first coupler 101 respectively with the input terminal of delayer 103 and broadband analogue predistortion IC core
The signal input part of piece 102 is connected, and the radio-frequency input signals received is separately input to delayer 103 by the first coupler 101
With broadband analogue predistortion IC chip 102；The letter of the output end of delayer 103 and the broadband analogue predistortion IC chip 102
Number output end is connected respectively to the input terminal of the second coupler 104, and output end and the broadband Doherty of the second coupler 104 are put
The signal input part connection of big device 105, second coupler 104 by through being delayed when delayer 103 radio-frequency input signals and
Through broadband analogue predistortion IC chip 102, treated that the pre- correcting signal that loses is coupled, and sends the signal after coupling to
The input terminal of broadband Doherty amplifier 105；Broadband Doherty amplifier 105 exports amplified signal.
In the present embodiment, radio-frequency input signals is divided into two-way by the first coupler 101, and main signal sends delayer to all the way
103, another way sampled signal is sent to broadband analogue predistortion IC chip 102, and broadband analogue predistortion IC chip 102 will sample
Signal exports after carrying out pre-distortion to the second coupler 104, and broadband analogue predistortion IC chip 102 handles signal delay
Time is longer, and the time delay of delayer 103 is just corresponding isometric, to guarantee corresponding time delay；Second coupler 104 will be by prolonging
When device 103 delay time signal and broadband analogue predistortion IC chip 102 treated it is pre- lose it is defeated after correcting signal is coupled
Out to broadband Doherty amplifier 105, broadband Doherty amplifier 105 amplifies signal, is put by broadband Doherty
The pre- mistake correcting signal that the non-linear distortion that big device 105 generates is generated with broadband analogue predistortion IC chip 102 offsets, and realizes line
Property improve.
The realization of predistorter SC190X series can be used in broadband analogue predistortion IC chip 102 in the present embodiment.Simulation
Pre-distortion technology by realizing by the pre-distortion unit of core of analog predistortion IC chip, realize efficient by broadband Doherty technology
Rate, two kinds of technologies combine the high-efficiency amplifier for realizing High Linear.
Doherty technology is used in the present embodiment, specifically includes balance Doherty, non-equilibrium Doherty, E-
The different application form of Doherty, multichannel Doherty etc..Wherein, the broadband GaN Doherty technology is firstly the need of consideration
The single tube type selecting broadband on the road Carrier and the road Peak；Followed by when single tube topology micro-strip matches design of Simulation, ultra wide band is considered
Design.It is also required to come maximum capacity reduce by design tactics on feeding network non-linear caused by memory effect.Finally,
The design of the input power-devided circuit of the framework of Doherty and 1/4 λ impedance of output end transformation draught line.It can also direct type selecting GaN material
Expect the design to realize Doherty circuit.
In the present embodiment, the radio frequency domains bandwidth of broadband Doherty amplifier 105 need to meet the non-linear of 3*BW (100MHz)
Bandwidth is sampled, and broadband analogue predistortion IC chip supports the sampling bandwidth of 3*BW about 300MHz.
For DPD technical solution, the requirements such as clock, filter and up-conversion drop in broadband Doherty amplifier
It is low, 1 times of signal bandwidth is all operable with from all devices of the base band into power amplifier output link.Only power amplifier and predistortion chip
It is influenced by spread bandwidth.This predistortion solution low-power consumption, miniaturization, low cost；Technology is realized simply, can be produced
Property it is good, system stability is high.
Using broadband analogue pre-distorting power amplifier device provided by the embodiment of the utility model, using analog predistortion
Technology IC realizes there is the technical advantages such as High Linear, multicarrier, miniaturization, low cost.Solves the multicarrier of 100MHz bandwidth
Or the linearisation of polymeric broadband signal improves problem.
Broadband analogue pre-distorting power amplifier device provided by the embodiment of the utility model, by broadband analogue predistortion IC
Chip and broadband Doherty amplifier combine, and can be realized the broadband broad band multicarrier LTE or 5G 100MHz instantaneous signal bandwidth
Carrier signal amplification and linearization process, obtain a kind of high efficiency, low cost, miniaturization broad band multicarrier LTE power put
Big device or broadband 5G power amplifier.Broadband analogue pre-distorting power amplifier device provided in this embodiment, working efficiency
It can achieve 28% or more.
Referring to Fig. 2, it further includes third coupling that the utility model, which applies the broadband analogue pre-distorting power amplifier device of example proposition,
The input terminal of clutch 106, third coupler 106 is connect with the output end of broadband Doherty amplifier 105, third coupler 106
Output end connect with broadband analogue predistortion IC chip 102, by the amplified letter of the broadband Doherty amplifier 105
Number output, and by output signal feedback to the broadband analogue predistortion IC chip 102.
In the present embodiment, the signal that third coupler 106 sends broadband Doherty amplifier 105 is exported, and sampling portion
Sub-signal feeds back to broadband analogue predistortion IC chip 102, so that broadband analogue predistortion IC chip 102 is by feedback signal and the
The linear signal that one coupler 101 is sent compares, and portion is solved using Volterra series iterative algorithm in the chip, fitting
Reversed non-linear distortion signal, continues to optimize and offsets effect and realize adaptation function, the broadband analogue predistortion function made
Rate amplifier device not only possesses high efficiency but also has the characteristics that High Linear, and by using existing highly integrated IC core
Piece simplifies circuit, avoids traditional analog predistortion technology that from need to building hardware circuit, and complex process is not easy to asking for production
Topic.
It further include the 4th referring to the broadband analogue pre-distorting power amplifier device that Fig. 3, the utility model embodiment are proposed
Coupler 107 and automatic level control circuit 108；
The output end of 4th coupler 107 is connect with the input terminal of automatic level control circuit 108, auto level control electricity
The output end on road 108 is connect with the input terminal of first coupler 101, and automatic level control circuit 108 is to the 4th coupling
The radio-frequency input signals that clutch 107 receives carries out power adjustment, and first coupling that signal adjusted is input to
Device 101.
It further, further include controller 109, the output end and automatic electric with the 4th coupler 107 respectively of controller 109
The control terminal of level control circuit 108 is connected, for controlling automatic level control circuit according to the output signal of the 4th coupler 107
108。
In the present embodiment, the 4th coupler 107, automatic level control circuit 108 (Automatic Level Control,
) and controller 109 ALC, wherein controller can realize by MCU (Micro Control Unit, microcontroller) or DSP,
4th coupler 107 is connected with ALC108 and controller 109 respectively, and input signal is transferred to ALC108 and samples input signal
Controller 109 is issued, ALC108 is connected with controller 109 and the first coupler 101 respectively, when input signal power is beyond specified
When value, controller 109, which exports corresponding control command control ALC108 and is adjusted to signal, makes signal stabilization.
In the broadband analogue pre-distorting power amplifier device proposed referring to Fig. 4, the utility model embodiment, the control
Device 109 is connect by Serial Peripheral Interface (SPI) with the broadband analogue predistortion IC chip 102.
In the present embodiment, controller 109 can also by SPI (Serial Peripheral Interface, it is serial outer
If interface) it is communicated with broadband analogue predistortion IC chip 102, when controller 109 detects that input signal power is less than default threshold
When value, the preset threshold can be set as needed, and broadband analogue predistortion IC chip 102 is turned off, because working as signal very little
When, the nonlinear characteristic of 105 output signal of broadband Doherty amplifier is also very weak, it may not be necessary to carry out predistortion.
In addition, controller 109 can also realize the software upgrade function to broadband analogue predistortion IC chip 102, specifically
It is as follows:
The software document to be downloaded is read by PC software, and data are divided into several points；
By separated data packet by downloading protocol packing；
Download command is sent to Target Board, so that Target Board is carried out downloading and prepares；
After Target Board MCU is ready to, a bag data is sent to target version at regular intervals；
After Target Board MCU successful data reception, predistortion IC chip is just forwarded the data to；
After data all transmit, predistortion IC chip is resetted；
Complete the update of program.
In a specific embodiment, MCU or DSP controls analog predistortion IC chip by SPI interface, realizes smooth
Mode.The analog predistortion technology is to be solved inside IC chip by Volterra series iterative algorithm, improves Doherty in real time
Nonlinear basic functional principle.But the signal in actual product application is the non-constant envelope signal of high peak-to-average power ratio, the function of signal
Rate is changing in real time；And switching on and shutting down switching state.In order to shorten the process time of Volterra series iterative algorithm solution, adopt
With the smooth mode of MCU or DSP.The mode is that " solution of Volterra series iterative algorithm " when first debugging is best
Offset coefficient and be saved in EPPROM, later no matter product repeated switching or changed power, predistortion IC is in MCU or dsp software
Under control always since the preservation offset state carry out Volterra series iterative algorithm solve.So as to shorten being asked from newly
The iterative process time of solution.
Further, automatic increasing is additionally provided between second coupler 104 and broadband Doherty amplifier 105
Beneficial control circuit (Automatic Gain Control, AGC) 201, the controller 109 respectively with the third coupler
The control terminal of 106 output end and the automatic gain control circuit 201 is connected, and automatic gain control circuit 201 is used for root
The automatic gain control circuit 201 is controlled according to the output signal of the third coupler 106.
In the present embodiment, AGC is increased after the second coupler 104, AGC is series at the second coupler 104 and broadband
Between Doherty amplifier 105, third coupler 106 sends the power of output signal to controller 109, and controller 109
The current gain that power amplifier is judged according to the power of input signal and the power of output signal, when current gain and nominal gain
Control AGC carries out gain compensation when having difference.
Novel analog predistortion IC technology and Doherty technological incorporation are realized multicarrier, broadband function by the utility model
The linearisation of rate amplifier and improved efficiency, while passing through the soft no control function of monitoring software program realization, in Lai Shixian power amplifier
Portion's self adaptive control.Wherein, analog predistortion element circuit include: radio-frequency input signals difference matching, power amplifier feedback signal it is poor
Divide matching, the matching of predistortion pre-distorted signal difference, crystal oscillator reference source circuit, LDO power circuit, time delay circuit etc.
Wherein, controller 109 is also connected with the control terminal of broadband Doherty amplifier 105.In the present embodiment, broadband
LDMOS can be used in Doherty amplifier 105 or GaN material is realized.When realizing broadband Doherty amplifier using LDMOS,
Controller 109 can also be fitted temperature compensation curve according to the grid temperature drift characteristic of LDMOS pipe to control the grid of Doherty amplifier
Pole tension is so that LDMOS pipe works in linear work status.
It further include setting referring to the broadband analogue pre-distorting power amplifier device that Fig. 5, the utility model embodiment are proposed
The first power amplifier tube 202 between the automatic level control circuit 108 and first coupler 101, and setting
The second power amplifier tube 203 between the automatic gain control circuit 201 and the broadband Doherty amplifier 105.
Broadband analogue pre-distorting power amplifier device provided by the embodiment of the utility model at least has following
The utility model has the advantages that
1, using Novel ultra wide band analog predistortion IC, New type power amplifier is developed, system altitude is integrated；Instantaneous carrier
Bandwidth reaches 100MHz, and predistortion IC internal sample bandwidth reaches 300MHz, and ACPR linearly improves 12dB or more.
2, using broadband Doherty technology, efficiency is up to 28%；Using the broadband GaN Doherty technology, efficiency is reachable
40%.
3, realize that smooth mode quickly offsets using MCU or dsp software control predistortion IC.
4, there are technical advantages such as " ultra wide band, multicarrier, High Linear, high efficiency, low cost, miniaturizations ".
The utility model embodiment additionally provides a kind of transmitter, and the transmitter includes described in any embodiment as above
Broadband analogue pre-distorting power amplifier device.Specifically, with broadband analogue pre-distorting power amplifier device as described in Figure 1
For transmitter provided in this embodiment is specifically described.Transmitter provided in this embodiment includes width as described in Figure 1
Band analog predistortion power amplifier apparatus, by mutually tying broadband analogue predistortion IC chip with broadband Doherty amplifier
It closes, can be realized the carrier signal amplification and linearization process of the broadband broad band multicarrier LTE or 5G 100MHz instantaneous signal bandwidth,
Obtain a kind of high efficiency, low cost, the broad band multicarrier LTE power amplifier of miniaturization or broadband 5G power amplifier.
It will be appreciated by those of skill in the art that although some embodiments in this include included in other embodiments
Certain features rather than other feature, but the combination of the feature of different embodiments mean in the scope of the utility model it
It is interior and form different embodiments.For example, in the following claims, embodiment claimed it is one of any
Can in any combination mode come using.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of broadband analogue pre-distorting power amplifier device, which is characterized in that lost in advance including the first coupler, broadband analogue
True IC chip, delayer, the second coupler and broadband Doherty amplifier；
The output end of first coupler respectively with the input terminal of the delayer and the broadband analogue predistortion IC chip
Signal input part be connected, the radio-frequency input signals received is separately input to the delayer and institute by first coupler
State broadband analogue predistortion IC chip；The output end of the delayer and the output of the signal of the broadband analogue predistortion IC chip
End is connected respectively to the input terminal of second coupler, and the output end of second coupler is put with the broadband Doherty
The signal input part connection of big device, second coupler will be described in radio-frequency input signals and warp through delaying when the delayer
Treated that the pre- correcting signal that loses is coupled for broadband analogue predistortion IC chip, and sends the width for the signal after coupling
Input terminal with Doherty amplifier；The broadband Doherty amplifier exports amplified signal.
2. broadband analogue pre-distorting power amplifier device according to claim 1, which is characterized in that further include third coupling
Clutch, the input terminal of the third coupler are connect with the output end of the broadband Doherty amplifier, the third coupler
Output end connect with the broadband analogue predistortion IC chip, by the amplified signal of broadband Doherty amplifier
Output, and output signal is fed back to the broadband analogue predistortion IC chip.
3. broadband analogue pre-distorting power amplifier device according to claim 1, which is characterized in that further include the 4th coupling
Clutch and automatic level control circuit；
The output end of 4th coupler is connect with the input terminal of the automatic level control circuit, the auto level control
The output end of circuit is connect with the input terminal of first coupler, and the automatic level control circuit is used for the 4th coupling
The radio-frequency input signals that clutch receives carries out power adjustment, and first coupler that signal adjusted is input to.
4. broadband analogue pre-distorting power amplifier device according to claim 3, which is characterized in that further include control
Device, the controller are connected with the control terminal of the output end of the 4th coupler and automatic level control circuit respectively, are used for
The automatic level control circuit is controlled according to the output signal of the 4th coupler.
5. broadband analogue pre-distorting power amplifier device according to claim 4, which is characterized in that the controller is logical
Serial Peripheral Interface (SPI) is crossed to connect with the broadband analogue predistortion IC chip.
6. broadband analogue pre-distorting power amplifier device according to claim 2, which is characterized in that further include the 4th coupling
Clutch and automatic level control circuit；
The output end of 4th coupler is connect with the input terminal of the automatic level control circuit, the auto level control
The output end of circuit is connect with the input terminal of first coupler, and the automatic level control circuit is used for the 4th coupling
The radio-frequency input signals that clutch receives carries out power adjustment, and first coupler that signal adjusted is input to；
It further include controller, the controller control with the output end and automatic level control circuit of the 4th coupler respectively
End processed is connected, for controlling the automatic level control circuit according to the output signal of the 4th coupler；
Automatic gain control circuit, the control are additionally provided between second coupler and broadband Doherty amplifier
Device is connected with the control terminal of the output end of the third coupler and the automatic gain control circuit respectively, the automatic increasing
Beneficial control circuit is used to control the automatic gain control circuit according to the output signal of the third coupler.
7. broadband analogue pre-distorting power amplifier device according to claim 6, which is characterized in that the controller is also
It is connected with the control terminal of the broadband Doherty amplifier.
8. broadband analogue pre-distorting power amplifier device according to claim 3, which is characterized in that further include that setting exists
Power amplifier tube between the automatic level control circuit and first coupler.
9. broadband analogue pre-distorting power amplifier device according to claim 6, which is characterized in that further include that setting exists
Power amplifier tube between the automatic gain control circuit and the broadband Doherty amplifier.
10. a kind of transmitter, which is characterized in that including broadband analogue pre-distorted power as described in any one of claim 1 to 9
Amplifier installation.
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| CN201821035102.7U CN208572040U (en) | 2018-07-02 | 2018-07-02 | Broadband analogue pre-distorting power amplifier device and transmitter |
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| CN201821035102.7U CN208572040U (en) | 2018-07-02 | 2018-07-02 | Broadband analogue pre-distorting power amplifier device and transmitter |
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| CN110912845A (en) * | 2019-11-04 | 2020-03-24 | 京信通信系统（中国）有限公司 | Analog predistortion processing circuit and signal processing apparatus |
| CN111147412A (en) * | 2019-12-25 | 2020-05-12 | 三维通信股份有限公司 | Predistortion processing device, signal transmission system and predistortion processing method |
| CN113676173A (en) * | 2020-05-15 | 2021-11-19 | 大富科技(安徽)股份有限公司 | Communication equipment and coupling circuit thereof |
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2018
- 2018-07-02 CN CN201821035102.7U patent/CN208572040U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110912845A (en) * | 2019-11-04 | 2020-03-24 | 京信通信系统（中国）有限公司 | Analog predistortion processing circuit and signal processing apparatus |
| WO2021088201A1 (en) * | 2019-11-04 | 2021-05-14 | 京信通信系统（中国）有限公司 | Analog pre-distortion processing circuit and signal processing device |
| CN111147412A (en) * | 2019-12-25 | 2020-05-12 | 三维通信股份有限公司 | Predistortion processing device, signal transmission system and predistortion processing method |
| CN111147412B (en) * | 2019-12-25 | 2021-11-09 | 三维通信股份有限公司 | Predistortion processing device, signal transmission system and predistortion processing method |
| CN113676173A (en) * | 2020-05-15 | 2021-11-19 | 大富科技(安徽)股份有限公司 | Communication equipment and coupling circuit thereof |
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Address after: 510663 Shenzhou Road 10, Science City, Guangdong, Guangzhou Patentee after: Jingxin Network System Co.,Ltd. Address before: 510663 Shenzhou Road 10, Science City, Guangdong, Guangzhou Patentee before: Comba Telecom System (China) Ltd. |