CN116610181A - Method and system for sectional tracking of amplitude range of envelope - Google Patents
Method and system for sectional tracking of amplitude range of envelope Download PDFInfo
- Publication number
- CN116610181A CN116610181A CN202310580971.7A CN202310580971A CN116610181A CN 116610181 A CN116610181 A CN 116610181A CN 202310580971 A CN202310580971 A CN 202310580971A CN 116610181 A CN116610181 A CN 116610181A
- Authority
- CN
- China
- Prior art keywords
- tracking
- envelope
- voltage
- section
- segmentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000011218 segmentation Effects 0.000 claims abstract description 43
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 238000005516 engineering process Methods 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 5
- 101150055297 SET1 gene Proteins 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 8
- 238000010295 mobile communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000004590 computer program Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 101150092843 SEC1 gene Proteins 0.000 description 2
- 101150117538 Set2 gene Proteins 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 101100042371 Caenorhabditis elegans set-3 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application discloses a method and a system for sectional tracking of an envelope amplitude range, which are characterized by comprising the following steps: segmenting the envelope of the radio frequency signal according to different amplitude ranges to obtain segmented envelope signals; the sectional envelope signals respectively adopt different tracking strategies to obtain an envelope amplitude range sectional tracking strategy; the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distribution of different ranges to obtain segmented tracking voltage; and calculating the optimal efficiency point of all parameter variables affecting the system efficiency and the step wave tracking voltage according to the segmented tracking voltage to obtain the condition of optimal efficiency. The application respectively establishes the tracking strategy according to the signal characteristics of the radio frequency signal in different voltage amplitude ranges, considers all parameter variables influencing the system efficiency, writes a loss calculation program, and finally determines the value of each variable by calculating the optimal efficiency point, thereby being suitable for envelope tracking in any modulation mode and having higher flexibility.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and a system for tracking an envelope amplitude range in a segmented manner.
Background
Mobile communication has been rapidly developed since the 70 th century of 20 as a modern technology of wireless communication, and has been divided into substantially five generations so far. The world has now entered fifth generation (5th Generation,5G) mobile communications and 35% of the global mobile data traffic by 2024 will be borne by the 5G network. By the end of 12 months in 2022, the Chinese mobile phone user scale is 16.83 hundred million users, wherein the fifth generation mobile communication user scale is 5.61 hundred million users, accounting for 33.3 percent of the mobile phone users and 2.75 times of the global average level (12.1 percent), 231.2 ten thousand 5G base stations are built and opened in an accumulated way, and the total quantity of the base stations accounts for more than 60 percent of the world. From the first generation to the fifth generation, the progress of mobile communication technology drives the global economic development, influences the trend of high-tech industry, changes the life style of people, and simultaneously brings about huge energy consumption. In a mobile communication system, a base station consumes more than 70% of the electric energy of the whole system, and 51% of the total electric energy consumed by the base station is caused by a Power Amplifier (PA), so that improving the PA efficiency is an effective way for reducing the loss and improving the energy utilization rate of the mobile communication system.
When the envelope voltage of the Radio Frequency (RF) signal is not a constant value, if a constant voltage power supply mode is adopted, the voltage difference between the power supply voltage and the envelope of the RF signal is larger, and the efficiency is lower. If the envelope tracking power supply mode is adopted, the voltage difference between the power supply voltage and the envelope of the radio frequency signal is effectively reduced, so that the loss is greatly reduced, and the efficiency is improved. In a 4G mobile communication system, the typical range of the peak-to-average ratio of the power of the RF signal is 8.5 dB-13 dB, and the efficiency of the class A power amplifier is lower than 10% at the moment, so that the energy utilization rate is extremely low. In a 5G communication system, the Peak-to-Average Power Ratio (PAPR) and bandwidth of the signal are further improved, and if the efficiency of the radio frequency PA can be improved, the operation efficiency of the communication base station is also effectively improved, which is significant for energy saving, emission reduction and environmental pollution reduction.
At present, three modes for realizing the efficient operation of the PA are mainly available. Respectively, the Doherty technique, the envelope elimination and restoration (Envelope Elimination and Restoration, EER) technique, and the envelope tracking technique (Envelope Tracking, ET). The Doherty technology needs to use a primary power amplifier and a secondary power amplifier to work cooperatively, so that the cost is high and the working bandwidth is low. The EER technology adopts a nonlinear power amplifier, the output voltage of an envelope curve recovery link is required to be completely consistent with the amplitude of the envelope curve of an input signal, and the power supply requirement on the power amplifier is more severe. In the ET technology, the envelope output voltage tracks the RF reference signal and is slightly higher than the envelope of the RF reference signal, and the power supply mode of the PA has no strict power supply requirement in the EER technology, so the ET technology has better application prospect and realization mode.
With the development of modern mobile communication technology, the modulation technology of RF signals is more and more complex, so that the bandwidth and PAPR of envelope signals are greatly improved. The switching tube has very narrow on and off pulses in each period, which puts a great stress on the switching tube and its driving, and even makes it difficult to achieve efficient on and off. Thus requiring reduced bandwidth processing of the RF envelope signal. The lower the bandwidth of the RF envelope signal, the lower the switching frequency, the smaller the switching loss, and the corresponding larger the linear loss, and the problem is necessarily encountered in lowering the switching frequency to what bandwidth is appropriate. And how to better track the RF envelope signal for optimal efficiency is also a matter of concern.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above-described problems occurring in the prior art.
Therefore, the application aims to provide a sectional tracking method for an amplitude range of an envelope, which solves the problems that proper bandwidth reduction sectional processing is not carried out on an RF envelope signal at present and the optimum efficiency is not obtained by tracking the RF envelope signal.
In order to solve the technical problems, the application provides the following technical scheme:
in a first aspect, an embodiment of the present application provides a method for tracking an envelope amplitude range in segments, including:
segmenting the envelope of the radio frequency signal according to different amplitude ranges to obtain segmented envelope signals;
the sectional envelope signals respectively adopt different tracking strategies to obtain an envelope amplitude range sectional tracking strategy;
the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distribution of different ranges to obtain segmented tracking voltage;
and calculating the optimal efficiency point of all parameter variables affecting the system efficiency and the step wave tracking voltage according to the segmented tracking voltage, obtaining the optimal efficiency condition and outputting the value of each parameter variable corresponding to the optimal efficiency condition.
The application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distributions of different ranges,
the method comprises three tracking strategies of upper-section accurate tracking, middle-section down-conversion tracking and lower-section constant-pressure tracking;
obtaining three sections of tracking voltage of the upper section, the middle section and the lower section according to the three-section tracking strategy, wherein two segmentation points Sec1 and Sec2 are arranged, and Sec2 is larger than Sec1;
the upper-section accurate tracking is used for outputting pulse voltage through a switching converter and outputting upper-section tracking voltage through accurate fitting;
the middle section down-conversion tracking strategy reduces the bandwidth of a middle section radio frequency envelope signal through a bandwidth limiting technology, and a magnitude comparison mechanism is adopted to generate a middle section tracking voltage;
the middle section radio frequency envelope signal is provided with n comparison points V setn And n=1, … …, N, V setn ＞V set(n+1) The middle section tracking voltage corresponds to n comparison points and has m=n+1 level numbers;
the lower constant voltage tracking strategy outputs constant base value voltage, namely lower tracking voltage, to track a lower envelope signal according to a voltage source;
the relation between the step wave tracking voltage and the three-section tracking voltage is as follows:
v mul ＝v pulse +v mid +V BS
wherein v is mul Tracking voltage for step wave, v pulse For upper-stage tracking voltage, v mid To track the voltage in the middle section, V BS The voltage is tracked for the lower segment.
The application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: setting the segmentation points Sec1 and Sec2 comprises setting iteration step length between the segmentation points Sec1 and Sec2, calculating and comparing system efficiency under each group of numerical values, and taking a value corresponding to the maximum efficiency point as the segmentation point.
The application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: setting the mid-segment envelope signal bandwidth includes,
according to the segmentation points Sec1 and Sec2, adopting different bandwidth limiting technologies, and selecting different filtering parameters;
envelope signals with different bandwidths are obtained in the capacity range of the switching converter, and bandwidth values under the optimal efficiency of the system are calculated and obtained.
The application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: calculating an optimal efficiency point according to the n middle tracking voltage comparison points and the m level numbers to obtain the middle tracking voltage comparison points and the level numbers m under optimal efficiency,
tracking voltage comparison points V according to N (n=1, … …, N) middle sections in sequence set1 ,……,，V steN Calculating the optimal efficiency point according to all possible values;
and selecting the middle section tracking voltage comparison point and the level number corresponding to the maximum value of the optimal efficiency points under all possible conditions.
The application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distributions of different ranges further comprises,
the method comprises the steps of dividing middle-section down-conversion tracking and lower-section constant-voltage tracking into middle-section lower-section tracking voltage;
and is provided with a segmentation point Sec1;
the relationship between the step wave tracking voltage and the middle-lower segment tracking voltage is as follows:
v mul ＝v mid +V BS 。
the application relates to an envelope amplitude range segmentation tracking method, which comprises the following steps: also included is a method of manufacturing a semiconductor device,
the method comprises the steps of dividing an upper-section accurate tracking voltage and a lower-section constant-voltage tracking upper-section and lower-section tracking voltage;
and is provided with a segmentation point Sec1;
the relation between the step wave tracking voltage and the upper and lower segment tracking voltages is as follows:
v mul ＝v pulse +V BS 。
in a second aspect, embodiments of the present application provide an envelope magnitude range segment tracking system, comprising,
the envelope signal segmentation module segments the envelope of the radio frequency signal according to different amplitude ranges to obtain a segmented envelope signal;
the tracking strategy module is used for obtaining the sectional tracking strategy of the amplitude range of the envelope by adopting different tracking strategies respectively;
the calculation and output module is used for carrying out segmentation according to different amplitude change distributions of different ranges by the envelope amplitude range segmentation tracking strategy to obtain segmented tracking voltage;
and calculating the optimal efficiency point of all parameter variables affecting the system efficiency and the step wave tracking voltage according to the segmented tracking voltage, obtaining the optimal efficiency condition and outputting the values of the parameter variables under the condition.
In a third aspect, embodiments of the present application provide a computing device comprising:
a memory and a processor;
the memory is configured to store computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to implement an envelope magnitude range segment tracking method according to any of the embodiments of the present application.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the envelope magnitude range segment tracking method.
The application has the beneficial effects that: the application respectively establishes the tracking strategy according to the signal characteristics of the RF signal in different voltage amplitude ranges, considers all parameter variables influencing the system efficiency, writes a loss calculation program, and finally determines the value of each variable by calculating the optimal efficiency point, thereby being suitable for envelope tracking in any modulation mode and having higher flexibility.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic circuit diagram of an envelope amplitude range segment tracking method according to the present application.
Fig. 2 is a schematic diagram of an upper-segment envelope signal precise tracking strategy of the envelope amplitude range segment tracking method of the present application.
Fig. 3 is a schematic diagram of a constant voltage tracking strategy of a middle-stage envelope signal of the envelope amplitude range segment tracking method of the present application.
Fig. 4 is a schematic diagram of a lower-stage envelope signal constant voltage tracking strategy of the envelope amplitude range segment tracking method of the present application.
FIG. 5 is a graph of step tracking voltage at 10V sec1 and 20V sec2 for bw, m and Vsetn for an envelope magnitude range segment tracking method of the present application.
FIG. 6 is a graph of step tracking voltage for an envelope magnitude range segment tracking system of the present application with 8V sec1 and 22V sec2 when bw, m and Vsetn are constant.
FIG. 7 shows the values of Sec1, sec2, m and V of the envelope amplitude range segment tracking method of the present application setn When the value is fixed, bw is a step wave tracking voltage diagram at 6 MHz.
FIG. 8 is a graph of step wave tracking voltage at 13MHz for bw when Sec1, sec2, n, and Vsetn are constant for an envelope magnitude range segment tracking method of the present application.
Fig. 9 is a graph of step wave tracking voltage at different Vsetn when Sec1, sec2, bw and m are constant values for an envelope amplitude range segment tracking method of the present application.
FIG. 10 is a graph of step tracking voltage under m is 3 when Sec1, sec2, bw are constant values, according to the envelope amplitude range segment tracking method of the present application.
FIG. 11 is a graph of step tracking voltage under m is 4 when Sec1, sec2, bw are constant values, according to the envelope amplitude range segment tracking method of the present application.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Further, in describing the embodiments of the present application in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1 to 11, for an embodiment of the present application, there is provided an envelope amplitude range segment tracking method, including:
referring to fig. 1 to 4, in embodiment 1 of the present application, a circuit for implementing an envelope amplitude range segmented tracking strategy is provided, wherein the circuit is divided into three segments v according to the amplitude variation distribution of different ranges of the RF signal envelope o-pulse 、v o-mid And v o-BS And different tracking strategies are adopted respectively, and the method is divided into upper-section accurate tracking, middle-section down-conversion tracking and lower-section constant-pressure tracking. The step wave tracking voltage v is finally obtained by superposing the tracking voltage of the three sections of envelope signals mul 。
S1: the envelope of the radio frequency signal is segmented according to different amplitude ranges to obtain segmented envelope signals.
S2: the segmented envelope signal is respectively subjected to different tracking strategies to obtain an envelope amplitude range segmented tracking strategy, and segmented according to different amplitude change distributions of different ranges to obtain segmented tracking voltages. It should be noted that:
as shown in fig. 1-4, the amplitude variation distribution is divided into three sections v according to different ranges of the RF signal envelope o-pulse 、v o-mid And v o-BS And respectively adopting different tracking strategies, dividing the tracking voltage into three sections of upper-section accurate tracking, middle-section down-conversion tracking and lower-section constant-voltage tracking, and arranging two segmentation points Sec1 and Sec2, wherein Sec2 is arranged>Sec1；
Wherein, the upper-stage accurate tracking strategy outputs pulse voltage v by a switching converter pulse Accurately fitting the output voltage;
the middle section down-conversion tracking strategy reduces the bandwidth bw of the middle section radio frequency envelope signal by a bandwidth limiting technology, and generates a middle section tracking voltage v by adopting an amplitude comparison mechanism mid Setting n comparison points V for middle section radio frequency envelope signal setn And (n=1, … …, N), V setn ＞V set(n+1) Middle section tracking voltage v mid Corresponding to n comparison points V setn And has m=n+1 level numbers;
the lower constant voltage tracking strategy outputs constant basic value voltage V by a voltage source BS Tracking a lower segment envelope signal;
step wave tracking voltage v mul The relationship with the three-segment tracking voltage is as follows:
v mul ＝v pulse +v mid +V BS
wherein v is mul Tracking voltage for step wave, v pulse For upper-stage tracking voltage, v mid To track the voltage in the middle section, V BS The voltage is tracked for the lower segment.
S4: calculating optimal efficiency points of all parameter variables affecting system efficiency according to the segmented tracking voltage and the step wave tracking voltage v mul And obtaining the condition of optimal efficiency. It should be noted that:
as shown in fig. 5 to 6, setting the segment points Sec1 and Sec2 includes setting an iteration step between the segment points Sec1 and Sec2, calculating and comparing the system efficiency under each set of values, and taking the value corresponding to the maximum efficiency point as the segment point.
As shown in fig. 7-8, setting the mid-section envelope signal bandwidth bw includes,
according to the segmentation points Sec1 and Sec2, adopting different bandwidth limiting technologies, and selecting different filtering parameters;
envelope signals with different bandwidths are obtained in the capacity range of the switching converter, and bandwidth values under the optimal efficiency of the system are calculated and obtained.
According to n middle section tracking voltage comparison points V as shown in FIGS. 9-11 setn And calculating optimal efficiency points by m level numbers to obtain a middle tracking voltage comparison point V under optimal efficiency setn The sum level number m includes,
when m=3, consider the comparison point V set1 、V set2 All possible values and calculating an optimal efficiency point;
when m=4, consider the comparison point V set1 、V set2 、V set3 All possible values are also calculatedAnd (5) outputting an optimal efficiency point. And so on, selecting V corresponding to the optimal efficiency point under all possible conditions setn And m.
Selecting a middle section tracking voltage comparison point V corresponding to the optimal efficiency point under all possible conditions setn And the maximum value of m level numbers is taken as a middle tracking voltage comparison point V under the optimal efficiency setn And the number of levels m.
It should be noted that processing different rf envelope signals will have two different output results, the first output result being the case where the efficiency is optimal in two segments, i.e. v mul ＝v mid +V BS Or v mul ＝v pulse +V BS The method comprises the steps of carrying out a first treatment on the surface of the The second output is that the efficiency is optimal in three segments, i.e. v mul ＝v pulse +v mid +V BS 。
The embodiment also provides an envelope amplitude range segment tracking system, which comprises:
the envelope signal segmentation module segments the envelope of the radio frequency signal according to different amplitude ranges to obtain a segmented envelope signal;
the tracking strategy module is used for obtaining the sectional tracking strategy of the amplitude range of the envelope by adopting different tracking strategies for the sectional envelope signals respectively;
the calculation and output module is used for segmenting the envelope amplitude range segmentation tracking strategy according to different amplitude change distributions in different ranges to obtain segmented tracking voltages;
calculating optimal efficiency points of all parameter variables affecting system efficiency according to the segmented tracking voltage and the step wave tracking voltage v mul The optimum efficiency is obtained and the values of the parameter variables in this case are output.
The embodiment also provides a computing device, which is suitable for the case of an envelope amplitude range segment tracking method, and includes:
a memory and a processor; the memory is configured to store computer executable instructions, and the processor is configured to execute the computer executable instructions to implement an envelope magnitude range segment tracking method as set forth in the above embodiments.
The computer device may be a terminal comprising a processor, a memory, a communication interface, a display screen and input means connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
The present embodiment also provides a storage medium having stored thereon a computer program which, when executed by a processor, implements a method for implementing envelope magnitude range segment tracking as proposed by the above embodiments.
The storage medium according to the present embodiment belongs to the same inventive concept as the data storage method according to the above embodiment, and technical details not described in detail in the present embodiment can be seen in the above embodiment, and the present embodiment has the same advantageous effects as the above embodiment.
Example 2
For another embodiment of the application, a verification test of an envelope amplitude range segmentation tracking method and a system is provided, and technical means adopted in the method and achieved technical effects are verified and described.
The method provided by the application divides the RF envelope signal into three sections according to the amplitude variation distribution of different ranges and adopts three different tracking strategies respectively. For the upper-section envelope signal, the power component is higher, but the signal distribution is sparse, so that accurate tracking is adopted, namely pulse voltage is accurately output through a switching converter for fitting according to the signal change; the main characteristic of the middle section envelope signal is high bandwidth, if accurate tracking is still adopted, the switching transient process of the power switch tube directly influences the establishment of the output voltage of the multi-level converter, so that the serious distortion of the output voltage of an ET power supply is caused, and the switch tube cannot obtain reliable working conditions, so that the bandwidth of the power switch tube is reduced by adopting a bandwidth limiting technology, and the fitting difficulty of the multi-level converter is reduced; the lower section envelope signal has lower power component and high bandwidth, and the switching loss and the hardware cost brought by adopting the down-conversion tracking are higher, which is unfavorable for optimizing the system efficiency, so that the constant voltage tracking is adopted.
In summary, the envelope amplitude range segmentation tracking method provided by the application has the following advantages compared with the traditional method without segmentation:
1. the proposed envelope amplitude range segmentation tracking strategy respectively establishes tracking strategies according to signal characteristics of the radio frequency envelope signals in different voltage amplitude ranges, the theoretical optimal efficiency of the 40MHz radio frequency envelope signals calculated according to an efficiency optimal program is 59.43%, and the theoretical efficiency of the traditional non-segmentation method is 51.68%, so that the system efficiency can be effectively improved.
2. And (3) considering all parameter variables affecting the system efficiency, writing a loss calculation program, and finally determining the value of each variable by calculating the optimal efficiency point, so that the method is suitable for envelope tracking in any modulation mode and has higher flexibility.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (10)
1. An envelope magnitude range segment tracking method, comprising:
segmenting the envelope of the radio frequency signal according to different amplitude ranges to obtain segmented envelope signals;
the sectional envelope signals respectively adopt different tracking strategies to obtain an envelope amplitude range sectional tracking strategy;
the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distribution of different ranges to obtain segmented tracking voltage;
and calculating the optimal efficiency point of all parameter variables affecting the system efficiency and the step wave tracking voltage according to the segmented tracking voltage to obtain the condition of optimal efficiency.
2. The method of envelope magnitude range segment tracking of claim 1, wherein: the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distributions of different ranges,
the method comprises three tracking strategies of upper-section accurate tracking, middle-section down-conversion tracking and lower-section constant-pressure tracking;
obtaining three sections of tracking voltage of the upper section, the middle section and the lower section according to the three-section tracking strategy, wherein two segmentation points Sec1 and Sec2 are arranged, and Sec2 is larger than Sec1;
the upper-section accurate tracking is used for outputting pulse voltage through a switching converter and outputting upper-section tracking voltage through accurate fitting;
the middle section down-conversion tracking strategy reduces the bandwidth of a middle section radio frequency envelope signal through a bandwidth limiting technology, and a magnitude comparison mechanism is adopted to generate a middle section tracking voltage;
the middle section radio frequency envelope signal is provided with n comparison points V setn And n=1, … …, N, V setn ＞V set(n+1) The middle section tracking voltage corresponds to n comparison points and has m=n+1 level numbers;
the lower constant voltage tracking strategy outputs constant base value voltage, namely lower tracking voltage, to track a lower envelope signal according to a voltage source;
the relation between the step wave tracking voltage and the three-section tracking voltage is as follows:
v mul ＝v pulse +v mid +V BS
wherein v is mul Tracking voltage for step wave, v pulse For upper-stage tracking voltage, v mid To track the voltage in the middle section, V BS The voltage is tracked for the lower segment.
3. The method of envelope magnitude range segment tracking of claim 2, wherein: setting the segmentation points Sec1 and Sec2 comprises setting iteration step length between the segmentation points Sec1 and Sec2, calculating and comparing system efficiency under each group of numerical values, and taking a value corresponding to the maximum efficiency point as the segmentation point.
4. A method of envelope magnitude range segment tracking as claimed in claim 3 wherein: setting the mid-segment envelope signal bandwidth includes,
according to the segmentation points Sec1 and Sec2, adopting different bandwidth limiting technologies, and selecting different filtering parameters;
envelope signals with different bandwidths are obtained in the capacity range of the switching converter, and bandwidth values under the optimal efficiency of the system are calculated and obtained.
5. The method of envelope magnitude range segment tracking of claim 4, wherein: calculating an optimal efficiency point according to the n middle tracking voltage comparison points and the m level numbers to obtain the middle tracking voltage comparison points and the level numbers m under optimal efficiency,
tracking voltage comparison points V according to N (n=1, … …, N) middle sections in sequence set1 ,……,,V steN Calculating the optimal efficiency point according to all possible values;
and selecting comparison points and level numbers of the middle tracking voltage corresponding to the maximum value of the optimal efficiency points under all possible conditions.
6. The method of envelope magnitude range segment tracking of claim 2, wherein: the envelope amplitude range segmentation tracking strategy segments according to different amplitude variation distributions of different ranges further comprises,
the method comprises the steps of dividing middle-section down-conversion tracking and lower-section constant-voltage tracking into middle-section lower-section tracking voltage;
and is provided with a segmentation point Sec1;
the relationship between the step wave tracking voltage and the middle-lower segment tracking voltage is as follows:
v mul ＝v mid +V BS 。
7. the method for envelope magnitude range segment tracking as defined in claim 2 or 6 wherein: also included is a method of manufacturing a semiconductor device,
the method comprises the steps of dividing an upper-section accurate tracking voltage and a lower-section constant-voltage tracking upper-section and lower-section tracking voltage;
and is provided with a segmentation point Sec1;
the relation between the step wave tracking voltage and the upper and lower segment tracking voltages is as follows:
v mul ＝v pulse +V BS 。
8. an envelope magnitude range segment tracking system, comprising,
the envelope signal segmentation module segments the envelope of the radio frequency signal according to different amplitude ranges to obtain a segmented envelope signal;
the tracking strategy module is used for obtaining the sectional tracking strategy of the amplitude range of the envelope by adopting different tracking strategies respectively;
the calculation and output module is used for carrying out segmentation according to different amplitude change distributions of different ranges by the envelope amplitude range segmentation tracking strategy to obtain segmented tracking voltage;
and calculating the optimal efficiency point of all parameter variables affecting the system efficiency and the step wave tracking voltage according to the segmented tracking voltage, obtaining the optimal efficiency condition and outputting the value of each parameter variable corresponding to the optimal efficiency condition.
9. A computing device, comprising:
a memory and a processor;
the memory is configured to store computer executable instructions that, when executed by a processor, implement the steps of the envelope magnitude range segment tracking method of any one of claims 1 to 7.
10. A computer readable storage medium storing computer executable instructions which when executed by a processor implement the steps of the envelope magnitude range segmentation tracking method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310580971.7A CN116610181B (en) | 2023-05-22 | 2023-05-22 | Method and system for sectional tracking of amplitude range of envelope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310580971.7A CN116610181B (en) | 2023-05-22 | 2023-05-22 | Method and system for sectional tracking of amplitude range of envelope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116610181A true CN116610181A (en) | 2023-08-18 |
| CN116610181B CN116610181B (en) | 2023-11-28 |
Family
ID=87684898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310580971.7A Active CN116610181B (en) | 2023-05-22 | 2023-05-22 | Method and system for sectional tracking of amplitude range of envelope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116610181B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003298361A (en) * | 2002-03-29 | 2003-10-17 | Shimada Phys & Chem Ind Co Ltd | Power amplification method and power amplifier |
| JP2007208684A (en) * | 2006-02-02 | 2007-08-16 | Matsushita Electric Ind Co Ltd | Transmitter having distortion compensating function |
| US20080297246A1 (en) * | 2007-05-31 | 2008-12-04 | Taylor Stewart S | Polar amplifier |
| CN102868305A (en) * | 2012-09-13 | 2013-01-09 | 电子科技大学 | Envelope tracking power supply based on class-E DC (direct current)-DC converter |
| CN104620509A (en) * | 2012-03-04 | 2015-05-13 | 匡坦斯公司 | Envelope tracking power amplifier system with delay calibration |
| CN104796091A (en) * | 2015-04-13 | 2015-07-22 | 南京理工大学 | Polynomial power amplifier modeling and digital pre-distorting method based on segmented memory |
| KR101691077B1 (en) * | 2015-10-07 | 2016-12-29 | 포항공과대학교 산학협력단 | Envelope tracking power amplifier using power source voltage of multi-level |
| US20170195972A1 (en) * | 2015-12-30 | 2017-07-06 | Skyworks Solutions, Inc. | Automated envelope tracking system |
| WO2018162746A1 (en) * | 2017-03-10 | 2018-09-13 | Acco | Power amplifier with stepwise envelope tracking and adaptive load |
| CN109286375A (en) * | 2017-07-19 | 2019-01-29 | 陕西亚成微电子股份有限公司 | A kind of power supply for envelope-tracking |
| CN113556025A (en) * | 2021-06-21 | 2021-10-26 | 南京邮电大学 | Method and system for generating reference signal of switching converter in envelope tracking power supply |
| CN113938009A (en) * | 2021-09-23 | 2022-01-14 | 南京工业大学 | Self-adaptive high-bandwidth envelope tracking power supply and control method thereof |
| CN114696746A (en) * | 2020-12-29 | 2022-07-01 | 中兴通讯股份有限公司 | Radio frequency power amplifier power supply circuit and control method thereof |
-
2023
- 2023-05-22 CN CN202310580971.7A patent/CN116610181B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003298361A (en) * | 2002-03-29 | 2003-10-17 | Shimada Phys & Chem Ind Co Ltd | Power amplification method and power amplifier |
| JP2007208684A (en) * | 2006-02-02 | 2007-08-16 | Matsushita Electric Ind Co Ltd | Transmitter having distortion compensating function |
| US20080297246A1 (en) * | 2007-05-31 | 2008-12-04 | Taylor Stewart S | Polar amplifier |
| CN104620509A (en) * | 2012-03-04 | 2015-05-13 | 匡坦斯公司 | Envelope tracking power amplifier system with delay calibration |
| CN102868305A (en) * | 2012-09-13 | 2013-01-09 | 电子科技大学 | Envelope tracking power supply based on class-E DC (direct current)-DC converter |
| CN104796091A (en) * | 2015-04-13 | 2015-07-22 | 南京理工大学 | Polynomial power amplifier modeling and digital pre-distorting method based on segmented memory |
| KR101691077B1 (en) * | 2015-10-07 | 2016-12-29 | 포항공과대학교 산학협력단 | Envelope tracking power amplifier using power source voltage of multi-level |
| US20170195972A1 (en) * | 2015-12-30 | 2017-07-06 | Skyworks Solutions, Inc. | Automated envelope tracking system |
| WO2018162746A1 (en) * | 2017-03-10 | 2018-09-13 | Acco | Power amplifier with stepwise envelope tracking and adaptive load |
| CN109286375A (en) * | 2017-07-19 | 2019-01-29 | 陕西亚成微电子股份有限公司 | A kind of power supply for envelope-tracking |
| CN114696746A (en) * | 2020-12-29 | 2022-07-01 | 中兴通讯股份有限公司 | Radio frequency power amplifier power supply circuit and control method thereof |
| CN113556025A (en) * | 2021-06-21 | 2021-10-26 | 南京邮电大学 | Method and system for generating reference signal of switching converter in envelope tracking power supply |
| CN113938009A (en) * | 2021-09-23 | 2022-01-14 | 南京工业大学 | Self-adaptive high-bandwidth envelope tracking power supply and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘青;张乃通;李铁才;张东来;: "基于次优包络提取的间接参考跟踪控制方法", 电气应用, no. 23 * |
| 王波;杨洪耕;: "基于EMD和TEO的电力系统短期扰动检测新方法", 继电器, no. 08 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116610181B (en) | 2023-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1076903C (en) | Efficient linear power amplification | |
| Kretzschmar et al. | Why transition coding for power minimization of on-chip buses does not work | |
| CN108322047B (en) | Hysteresis current controlled envelope tracking power supply and control method | |
| Guo et al. | Powering green digitalization: evidence from 5G network infrastructure in China | |
| CN103792982B (en) | A kind of low pressure difference linear voltage regulator without external capacitor | |
| CN110165892A (en) | A kind of mixing capacitor and inductor step-down conversion circuit and implementation method | |
| CN116610181B (en) | Method and system for sectional tracking of amplitude range of envelope | |
| CN110212754A (en) | A kind of rechargeable switching capacity high bandwidth envelope tracking power circuit of relay | |
| CN103078498B (en) | A kind of voltage conversion circuit and using method thereof | |
| CN103324234B (en) | Output dynamic regulation circuit of low dropout linear regulator (LDO) | |
| CN109164297B (en) | Multifunctional electric meter | |
| CN113938009B (en) | Self-adaptive high-bandwidth envelope tracking power supply and control method thereof | |
| CN112332639A (en) | Pulse edge independent distribution circuit and method capable of realizing frequency reduction at any multiple | |
| CN114865894B (en) | Method for generating control signal of switch converter in envelope tracking power supply | |
| CN110149285A (en) | A method of reducing phase error in the high order modulation of low bit quantization | |
| CN205725709U (en) | A kind of digital to analog converter | |
| CN205622624U (en) | Analog to digital conversion circuit based on recall and hinder ware | |
| CN106505855B (en) | A kind of high wide-band envelope line tracking power supply and its control method | |
| Huang et al. | An energy recycling envelope tracking supply modulator assisted by small cap replica with 89.7% efficiency and 37% reduced linear amplifier current for 150 MHz bandwidth 5G new radio RF applications | |
| CN114825931A (en) | Series-structure high-bandwidth envelope tracking power supply and control method thereof | |
| CN109861671A (en) | A kind of low-noise low-power consumption dynamic comparer based on voltage controlled oscillator | |
| US20230071072A1 (en) | Data inversion circuit to perform dbi-ac encoding using pam 4 signal | |
| CN108811067B (en) | Energy distribution method with optimal multi-carrier energy efficiency | |
| CN101989836B (en) | Efficient audio amplifier and related method thereof | |
| CN115422786B (en) | Convex optimization modeling method for soft-direct traction power supply system based on branch flow equation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |