CN106877824A - Envelope-tracking power supply control system and method based on FPGA signal transactings - Google Patents
Envelope-tracking power supply control system and method based on FPGA signal transactings Download PDFInfo
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- CN106877824A CN106877824A CN201611251518.8A CN201611251518A CN106877824A CN 106877824 A CN106877824 A CN 106877824A CN 201611251518 A CN201611251518 A CN 201611251518A CN 106877824 A CN106877824 A CN 106877824A
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- 238000010835 comparative analysis Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Power Engineering (AREA)
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- Amplifiers (AREA)
Abstract
The invention discloses a kind of envelope-tracking power supply control system and method based on FPGA signal transactings, the present invention can use FPGA Digital Signal Processing modes, produce envelope power control signal, and can be by the envelope detected to rf power signal, to be corrected and compensate, the linearity of radio-frequency power amplifier output has been reached.
Description
Technical field
It is more particularly to a kind of based at FPGA signals the present invention relates to a kind of envelope-tracking power supply control system and method
The envelope-tracking power supply control system and method for reason.
Background technology
Digital RF linear power amplifier is a kind of new efficient radio frequency linear amplifier, high-speed figure envelope-tracking
Power supply is the significant components of digital RF linear power amplifier, and its control technology is to realize that envelope-tracking power supply is quick, accurate
Track the key technology of radiofrequency signal envelope variation.
Envelope-tracking power supply is generally produced using pulse width modulation (PWM), i.e., by comparator, produce pwm signal, directly
Driving metal-oxide-semiconductor on-off circuit is connect, it is filtered to obtain envelope-tracking power supply output.In order to improve envelope-tracking power supply performance, have
Design uses multichannel comparator, multiplex operation power supply to produce multi-channel PWM signal according to different incoming levels, drive multichannel MOS
Pipe on-off circuit, obtains envelope-tracking power supply and exports through merging and filtering.
Prior art exist problem be：The main effect of envelope-tracking power supply is that what radio frequency linear power amplifies, its
Final target is output linearity rf power signal, because side circuit is undesirable, envelope-tracking power supply output voltage with penetrate
The output of frequency linear power is not exclusively linear relationship, can produce non-linear distortion and error, it is necessary to pass through envelope-tracking power supply pair
Output signal is corrected and compensates, and envelope-tracking power supply correction and the compensation difficulty for simulating PWM are larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of envelope-tracking power supply control based on FPGA signal transactings
System and method, it can use FPGA Digital Signal Processing modes, produce envelope power control signal, it is possible to by penetrating
The envelope detected of frequency power signal is corrected and compensates, and has reached the linearity of radio-frequency power amplifier output.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of bag based on FPGA signal transactings
Network tracks power control system, and it includes：
Analog-digital converter, the envelope signal digitlization that will be input into；
Fpga chip, carries out signal transacting, according to current signal level and the level changing value of next sampling instant, bag
Level raising and lowering situation is included, rate of change (slope) is calculated；Transformation rate calculates the driving pulse for producing respective width, defeated
Go out the simple two-way signal for subtracting button pulse that the driving pulse and voltage of corresponding voltage rising decline, by boost drive signals and step-down
Subtract that button pulse signal control digital envelope tracking power supply is quick, accurate tracking radiofrequency signal envelope variation；
Fpga chip is included with lower module：
Level comparative analysis module, is connected with error transfer factor module；
Error transfer factor module, is connected with driving pulse module, according to the error of target output signal envelope, be corrected and
Compensation；
Driving pulse module, the driving pulse for producing respective width is calculated according to rate of change, and according to detection signal, it is right
Error is compensated and corrected, the simple two-way signal for subtracting button pulse that the driving pulse and voltage that output corresponding voltage rises decline,
By boost drive signals and step-down subtract button pulse signal control digital envelope to track power supply is quick, accurate tracking radiofrequency signal bag
Network changes；
Bi-directional drive Switching Power Supply is connected with driving pulse module；
Filtering output module input is connected with bi-directional drive Switching Power Supply, and output end is connected with analog converter.
The present invention also provides a kind of envelope-tracking power supply control method based on FPGA signal transactings, and it includes following step
Suddenly：
Step one, tests envelope-tracking power supply characteristic, when envelope power supply original levels are 0, and charging pulse is continuously 1,
Envelope-tracking power supply characteristic curve can be measured, the range of linearity of real work is determined；
Step 2, requires according to radio frequency power output, determines envelope-tracking power supply output level proportionality coefficient；
Step 3, according to current and follow-up level P values, calculates level P value changes slopes, according to P values and change slope
It is determined that the quantity of output envelope power drives pulse；
Step 4, subtracts button pulse signal and controls digital envelope tracking power supply quick, accurate by boost drive signals and step-down
Radiofrequency signal envelope variation is really tracked, and detects that radio-frequency power exports envelope level, envelope level error is exported according to radio frequency, entered
Row error compensation.
Positive effect of the invention is：The present invention can use Digital Signal Processing mode, it is easy to signal point
Analysis is processed, and accurately reflects the transient change of envelope signal, and control level range is wide, fast response time；Using Digital Signal Processing
Mode, it is easy to which error signal is corrected and compensates, for radiofrequency signal output, can preferably reach linearity；Adopt
Realized with fpga chip, simple with circuit structure, integrated level is high, it is easy to accomplish, can be updated by software upgrading perfect.
The present invention realizes quick, the accurate tracking of radiofrequency signal envelope level of the digital envelope tracking Switching Power Supply to being input into, and is easy to
Applied Digital method carries out error correction and compensation, meets digital RF linear power amplification circuit to envelope-tracking power supply
It is required that.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is flow chart of the invention.
Specific embodiment
Present pre-ferred embodiments are given below in conjunction with the accompanying drawings, to describe technical scheme in detail.
As shown in figure 1, envelope-tracking power supply control system of the present invention based on FPGA signal transactings includes：
Analog-digital converter, the envelope signal digitlization that will be input into；
Fpga chip, carries out signal transacting, according to current signal level and the level changing value of next sampling instant, bag
Level raising and lowering situation is included, rate of change (slope) is calculated；Transformation rate calculates the driving pulse for producing respective width, defeated
Go out the simple two-way signal for subtracting button pulse that the driving pulse and voltage of corresponding voltage rising decline, by boost drive signals and step-down
Subtract that button pulse signal control digital envelope tracking power supply is quick, accurate tracking radiofrequency signal envelope variation；
Fpga chip is included with lower module：
Level comparative analysis module, is connected with error transfer factor module；
Error transfer factor module, is connected with driving pulse module, according to the error of target output signal envelope, be corrected and
Compensation；
Driving pulse module, the driving pulse for producing respective width is calculated according to rate of change, and according to detection signal, it is right
Error is compensated and corrected, the simple two-way signal for subtracting button pulse that the driving pulse and voltage that output corresponding voltage rises decline,
By boost drive signals and step-down subtract button pulse signal control digital envelope to track power supply is quick, accurate tracking radiofrequency signal bag
Network changes；
Bi-directional drive Switching Power Supply is connected with driving pulse module；
Filtering output module input is connected with bi-directional drive Switching Power Supply, and output end is connected with analog converter.
Envelope-tracking power supply control method of the present invention based on FPGA signal transactings is comprised the following steps：
Step S1, tests envelope-tracking power supply characteristic, when envelope power supply original levels are 0, and charging pulse is continuously 1,
Envelope-tracking power supply characteristic curve can be measured, the range of linearity of real work is determined；
Step S2, requires according to radio frequency power output, determines envelope-tracking power supply output level proportionality coefficient；
Step S3, according to current and follow-up level P values, calculates level P value changes slopes, according to P values and change slope
It is determined that the quantity of output envelope power drives pulse；
Step S4, subtracts button pulse signal and controls digital envelope tracking power supply quick, accurate by boost drive signals and step-down
Radiofrequency signal envelope variation is really tracked, and detects that radio-frequency power exports envelope level, envelope level error is exported according to radio frequency, entered
Row error compensation.
Particular embodiments described above, technical problem, technical scheme and beneficial effect to solution of the invention are carried out
Further describe, should be understood that and the foregoing is only specific embodiment of the invention, effect not is
What limitation present invention, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., all should
It is included within protection scope of the present invention.
Claims (2)
1. a kind of envelope-tracking power supply control system based on FPGA signal transactings, it is characterised in that it includes：
Analog-digital converter, the envelope signal digitlization that will be input into；
Fpga chip, carries out signal transacting, according to current signal level and the level changing value of next sampling instant, including electricity
Flat raising and lowering situation, calculates rate of change (slope)；Transformation rate calculates the driving pulse for producing respective width, and it is right to export
The driving pulse that voltage rises and the simple two-way signal for subtracting button pulse that voltage declines are answered, button is subtracted by boost drive signals and step-down
Pulse signal control digital envelope tracking power supply is quick, accurate tracking radiofrequency signal envelope variation；
Fpga chip is included with lower module：
Level comparative analysis module, is connected with error transfer factor module；
Error transfer factor module, is connected with driving pulse module, according to the error of target output signal envelope, is corrected and mends
Repay；
Driving pulse module, the driving pulse for producing respective width is calculated according to rate of change, and according to detection signal, to error
Compensate and correct, the simple two-way signal for subtracting button pulse that the driving pulse and voltage that output corresponding voltage rises decline passes through
Boost drive signals and step-down subtract button pulse signal control digital envelope tracking power supply, and quickly, accurately tracking radiofrequency signal envelope becomes
Change；
Bi-directional drive Switching Power Supply is connected with driving pulse module；
Filtering output module input is connected with bi-directional drive Switching Power Supply, and output end is connected with analog converter.
2. a kind of envelope-tracking power supply control method based on FPGA signal transactings, it is characterised in that it is comprised the following steps：
Step one, tests envelope-tracking power supply characteristic, when envelope power supply original levels are 0, and charging pulse is continuously 1, can be with
Envelope-tracking power supply characteristic curve is measured, the range of linearity of real work is determined；
Step 2, requires according to radio frequency power output, determines envelope-tracking power supply output level proportionality coefficient；
Step 3, according to current and follow-up level P values, calculates level P value changes slopes, determines according to P values and change slope
Export the quantity of envelope power drives pulse；
Step 4, by boost drive signals and step-down subtract button pulse signal control digital envelope track power supply it is quick, it is accurate with
Track radiofrequency signal envelope variation, and detect that radio-frequency power exports envelope level, envelope level error is exported according to radio frequency, missed
Difference compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251518.8A CN106877824A (en) | 2016-12-29 | 2016-12-29 | Envelope-tracking power supply control system and method based on FPGA signal transactings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611251518.8A CN106877824A (en) | 2016-12-29 | 2016-12-29 | Envelope-tracking power supply control system and method based on FPGA signal transactings |
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| CN106877824A true CN106877824A (en) | 2017-06-20 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111541634A (en) * | 2019-02-07 | 2020-08-14 | Qorvo美国公司 | Adaptive frequency equalizer for wide modulation bandwidth envelope tracking |
| CN115473541A (en) * | 2021-05-24 | 2022-12-13 | 深圳市万普拉斯科技有限公司 | Radio frequency adjusting method, radio frequency circuit, electronic device and readable storage medium |
| US11716057B2 (en) | 2020-01-28 | 2023-08-01 | Qorvo Us, Inc. | Envelope tracking circuitry |
| US11728774B2 (en) | 2020-02-26 | 2023-08-15 | Qorvo Us, Inc. | Average power tracking power management integrated circuit |
| CN117236262A (en) * | 2023-11-15 | 2023-12-15 | 深圳市恒运昌真空技术有限公司 | Analysis method and system for output power amplification coefficient of radio frequency power supply |
| US11909385B2 (en) | 2020-10-19 | 2024-02-20 | Qorvo Us, Inc. | Fast-switching power management circuit and related apparatus |
| US12063018B2 (en) | 2021-06-10 | 2024-08-13 | Qorvo Us, Inc. | Envelope tracking integrated circuit operable with multiple types of power amplifiers |
| US12068720B2 (en) | 2021-02-26 | 2024-08-20 | Qorvo Us, Inc. | Barely Doherty dual envelope tracking (BD2E) circuit |
| US12126305B2 (en) | 2021-05-27 | 2024-10-22 | Qorvo Us, Inc. | Radio frequency (RF) equalizer in an envelope tracking (ET) circuit |
Citations (3)
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|---|---|---|---|---|
| CN101247153A (en) * | 2008-03-13 | 2008-08-20 | 中兴通讯股份有限公司 | Method for improving power amplifier efficiency and digital predistortion broadband communicator |
| CN106208974A (en) * | 2016-08-30 | 2016-12-07 | 厦门信同信息技术有限公司 | A kind of design method of digital power amplifier based on adaptive digital envelop following technology |
| CN106208986A (en) * | 2016-08-30 | 2016-12-07 | 厦门信同信息技术有限公司 | A kind of design method based on digital feed forward technology Yu the digitized power amplifier of envelop following technology |
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2016
- 2016-12-29 CN CN201611251518.8A patent/CN106877824A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247153A (en) * | 2008-03-13 | 2008-08-20 | 中兴通讯股份有限公司 | Method for improving power amplifier efficiency and digital predistortion broadband communicator |
| CN106208974A (en) * | 2016-08-30 | 2016-12-07 | 厦门信同信息技术有限公司 | A kind of design method of digital power amplifier based on adaptive digital envelop following technology |
| CN106208986A (en) * | 2016-08-30 | 2016-12-07 | 厦门信同信息技术有限公司 | A kind of design method based on digital feed forward technology Yu the digitized power amplifier of envelop following technology |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111541634A (en) * | 2019-02-07 | 2020-08-14 | Qorvo美国公司 | Adaptive frequency equalizer for wide modulation bandwidth envelope tracking |
| CN111541634B (en) * | 2019-02-07 | 2024-01-12 | Qorvo美国公司 | Adaptive frequency equalizer for wide modulation bandwidth envelope tracking |
| US11716057B2 (en) | 2020-01-28 | 2023-08-01 | Qorvo Us, Inc. | Envelope tracking circuitry |
| US11728774B2 (en) | 2020-02-26 | 2023-08-15 | Qorvo Us, Inc. | Average power tracking power management integrated circuit |
| US11909385B2 (en) | 2020-10-19 | 2024-02-20 | Qorvo Us, Inc. | Fast-switching power management circuit and related apparatus |
| US12068720B2 (en) | 2021-02-26 | 2024-08-20 | Qorvo Us, Inc. | Barely Doherty dual envelope tracking (BD2E) circuit |
| CN115473541A (en) * | 2021-05-24 | 2022-12-13 | 深圳市万普拉斯科技有限公司 | Radio frequency adjusting method, radio frequency circuit, electronic device and readable storage medium |
| US12126305B2 (en) | 2021-05-27 | 2024-10-22 | Qorvo Us, Inc. | Radio frequency (RF) equalizer in an envelope tracking (ET) circuit |
| US12063018B2 (en) | 2021-06-10 | 2024-08-13 | Qorvo Us, Inc. | Envelope tracking integrated circuit operable with multiple types of power amplifiers |
| CN117236262A (en) * | 2023-11-15 | 2023-12-15 | 深圳市恒运昌真空技术有限公司 | Analysis method and system for output power amplification coefficient of radio frequency power supply |
| CN117236262B (en) * | 2023-11-15 | 2024-03-19 | 深圳市恒运昌真空技术股份有限公司 | Analysis method and system for output power amplification coefficient of radio frequency power supply |
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Application publication date: 20170620 |