CN112838837A - Automatic control method and device for power amplifier output - Google Patents
Automatic control method and device for power amplifier output Download PDFInfo
- Publication number
- CN112838837A CN112838837A CN202011608864.3A CN202011608864A CN112838837A CN 112838837 A CN112838837 A CN 112838837A CN 202011608864 A CN202011608864 A CN 202011608864A CN 112838837 A CN112838837 A CN 112838837A
- Authority
- CN
- China
- Prior art keywords
- associated data
- output power
- power amplifier
- output
- power
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005259 measurement Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002222 downregulating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Abstract
The application discloses a method for automatically controlling power amplifier output: measuring and storing first correlation data between output frequency and gain control voltage, and measuring and storing second correlation data between output power and temperature; searching in the first associated data and the second associated data in sequence according to the target output power and the target output frequency, and performing power amplifier output according to the initial gain control voltage determined by searching; periodically measuring the current actual output power, and calculating the current difference value between the current actual output power and the target output power; and when the current difference value is out of the tolerance range, after the target output power is adjusted downwards, searching in the first associated data and the second associated data in sequence, and carrying out power amplifier output according to the adjusted gain control voltage determined by searching. According to the method and the device, the first associated data and the second associated data are formulated, after the target output power and the target output frequency are set, the gain control voltage can be quickly confirmed through searching, and the efficiency of power amplifier control is greatly improved.
Description
Technical Field
The present application relates to the field of communications, and in particular, to a method and an apparatus for automatically controlling power amplifier output.
Background
The power amplifier has a wide application range, and has a playing shadow from household appliances such as a sound box, a television, a microwave oven and the like to civil products such as a repeater, a television tower and the like. The factors influencing the output power of the power amplifier mainly include: ambient temperature, electrical signal frequency, etc., electrical signal phase. However, it is a key and difficult point of research in the past how to ensure a series of stable and controllable parameters such as power, echo, noise floor and the like output by the power amplifier to make the output power reach the target power.
Disclosure of Invention
The present application aims to overcome at least some of the deficiencies of the prior art and provide a fast and stable method and apparatus for automatically controlling the output of a power amplifier.
In order to achieve the technical purpose, the technical scheme adopted by the application is as follows:
the first is a method for automatically controlling the output of a power amplifier, which comprises the following steps:
for the appointed power amplifier, measuring and calculating first correlation data between output frequency and gain control voltage and storing the first correlation data, and measuring and calculating second correlation data between output power and temperature and storing the second correlation data;
searching in the first associated data and the second associated data in sequence according to the target output power and the target output frequency, and performing power amplifier output according to the initial gain control voltage determined by searching;
periodically measuring the current actual output power, and calculating the current difference value between the current actual output power and the target output power;
and when the current difference value is out of the tolerance range, after the target output power is adjusted downwards, searching in the first associated data and the second associated data in sequence, and carrying out power amplifier output according to the adjusted gain control voltage determined by searching.
Specifically, the first associated data is obtained by the following method:
selecting characteristic frequency points in a quasi-output frequency range;
measuring gain control voltages corresponding to different output powers in each characteristic frequency point;
collating the data obtained by the measurement to form a table of the first associated data;
the second associated data is obtained by the following method:
measuring compensation voltages corresponding to different temperatures in each characteristic frequency point;
and sorting the data obtained by the measurement to form a table of the second associated data.
Preferably, the number of the characteristic frequency points is at least 5; the characteristic frequency points comprise two end values of the frequency range to be output.
Further preferably, the difference value between the different output powers is 5-10W; the difference between the different temperatures is 0.2-2 ℃.
Further preferably, the table of the first associated data and the table of the second associated data are saved in a flash form.
Preferably, the method of down-regulating the target output power is as follows:
and subtracting one half of the current difference value from the original target output power to obtain the adjusted target output power, and using the adjusted target output power to determine the adjusted gain control voltage.
Optionally, the determination method of whether the current difference is outside the tolerance range is one of the following:
specifying an upper limit interval value and a lower limit interval value which float based on the target output power, and when the current difference value is larger than the upper limit interval value or smaller than the lower limit interval value, considering that the current difference value is out of a tolerance range;
and calculating an accumulated value of the difference values obtained in the last several measurement periods, and when the accumulated value is more than 1W, considering that the current difference value is out of the tolerance range.
Preferably, the upper limit interval value is 0-1W; the lower limit interval value is-1-0W; the number of the last measurement cycles is 3-8.
Further, the current difference value is within the tolerance range, and the output control of the power amplifier is suspended.
Secondly, the automatic control device for the power amplifier output comprises a processing chip and a storage medium, wherein one or more programs are stored in the storage medium and configured to be executed by the processing chip, and the one or more programs are used for driving the processing chip to be constructed for executing the automatic control method for the power amplifier output.
Compared with the prior art, the method has the following advantages:
(1) according to the method, first correlation data between the output frequency and the gain control voltage and second correlation data between the output power and the temperature are formulated, after the target output power and the target output frequency are set, the gain control voltage can be quickly confirmed through searching, the background runs quickly, and the efficiency of automatic control of the power amplifier is greatly improved;
(2) the method has simple and clear operational logic, clear boundary and termination condition, stability, difficulty in error and suitability for long-time operation;
(3) according to the method, the first associated data and the second associated data are stored in the flash in a table form, so that the safety of the data and the operation rapidness are greatly improved;
(4) the method can process the condition of power amplifier output power deviation caused by various factors, and can quickly adjust the output power under various complex environments.
(5) The method and the device are suitable for various power amplifier systems, including a signal source system, and are suitable for monitoring and automatically controlling the power amplifier system by being integrated in software of an embedded monitoring system.
Drawings
Fig. 1 is a flowchart of an automatic control method for power amplifier output according to the present application.
Detailed Description
The present application is described in further detail below with reference to the attached drawings and the detailed description.
The power amplifier related to the application has rich application scenes from household appliances such as audio, television, microwave oven and the like to civil equipment such as a repeater station, a television tower and the like, so that in order to improve the applicability of the method related to the application to the designated power amplifier, the power amplifier in a specific scene needs to be measured, calculated and debugged, and the repeater station is taken as an example hereinafter to detail the power amplifier output automatic control method.
The power amplifier output automatic control method comprises the following steps:
s1, calculating and storing first correlation data between output frequency and gain control voltage and calculating and storing second correlation data between output power and temperature for the specified power amplifier;
the first associated data relates to a corresponding relationship between the output frequency and the gain control voltage, and in the prior art, the adjustment of the output frequency can be realized by adjusting the gain control voltage, however, the mathematical corresponding relationship between the gain control voltage and the output frequency is relatively complex, and for different power amplifiers, the corresponding relationship has a larger deviation, and in order to simplify the operation, a standard corresponding table is firstly formulated in the application. The second correlation data is related to the corresponding relation between the output power and the temperature, and the power amplifier output power can be further calibrated by measuring the second correlation data. For power amplifiers in other application scenarios, other association data, such as association data between output power and phase, may also be formulated in a targeted manner.
Specifically, it is assumed that the frequency range of the electrical signal output by the power amplifier in this embodiment is 2400MHz to 2500MHz, and five characteristic frequency points 2400MHz, 2425MHz, 2450MHz, 2475MHz, and 2500MHz are taken within the frequency range 2400MHz to 2500MHz, including two endpoints of the frequency range. Next, when the frequency point is 2400MHz, the corresponding relation between the output frequency and the gain control voltage is measured: the corresponding relation between the output frequency and the gain control voltage at frequency points of 2425MHz, 2450MHz, 2475MHz and 2500MHz is measured by the same method for … … with 10W-1508mV, 20W-1564mV, 30W-1620mV, 40W-1676mV and 50W-1716 mV. And sorting the data obtained by measurement, compiling into a flash table of first associated data and storing.
Further, the second correlation data between the output power and the temperature can be obtained through the test of the high-low temperature box, and the embodiment obtains after calculation: when the temperature is lower than 35 ℃, the gain control voltage needs to be compensated by 1mV when the temperature is reduced by 1 ℃. And sorting the data obtained by measurement, compiling into a flash table of second associated data and storing.
In summary, the method for measuring and calculating the first related data and the second related data is as follows:
selecting characteristic frequency points in a quasi-output frequency range; those skilled in the art should know that the greater the number of characteristic frequency points, the higher the accuracy of the first associated data and the second associated data, but the measurement workload is also increased correspondingly, and in general, the number of the characteristic frequency points is at least 5 and must include two end values of the frequency range;
measuring gain control voltages corresponding to different output powers in each characteristic frequency point, preferably, the difference between the different output powers is 5-10W, so as to achieve certain measuring and calculating accuracy;
sorting the data obtained in the last step to form a table of the first associated data;
measuring compensation voltages corresponding to different temperatures in each characteristic frequency point, preferably, the difference between the different temperatures is 0.2-2 ℃, so as to achieve certain measuring and calculating accuracy;
and sorting the data obtained in the last step to form a table of the second associated data.
S2, searching in the first associated data and the second associated data according to the target output power and the target output frequency in sequence, and carrying out power amplifier output according to the initial gain control voltage determined by searching;
the specific searching method comprises the following steps: assuming that the currently set target output power is 50W and the target output frequency is 2430MHz in this embodiment, the gain control voltage corresponding to the frequency point of 2430MHz is calculated according to the gain control voltages corresponding to the two frequency points of 2425MHz and 2450MHz in the first associated data table. After the current environment temperature is measured, calculating to obtain an initial gain control voltage according to the compensation voltages corresponding to the two frequency points of 2425MHz and 2450MHz in the second associated data table, and carrying out power amplifier output according to the initial gain control voltage value.
S3, periodically measuring the current actual output power, and calculating the current difference value between the current actual output power and the target output power;
and when the current difference value is out of the tolerance range, after the target output power is adjusted downwards, searching in the first associated data and the second associated data in sequence, and carrying out power amplifier output according to the adjusted gain control voltage determined by searching.
Otherwise, the output control of the power amplifier is suspended.
In this embodiment, after the power amplifier is output through the initial gain control voltage determined in the previous step, the actual output power of the power amplifier system is measured, and the actual output power of the power amplifier system is determined to be 55W. Tolerance exists between the target output power and the actual output power, and within the tolerance range, the actual output power can be considered to basically reach the target output power, and the power amplifier system reaches a stable state without intervention and adjustment. The difference between the target output power and the actual output power is considered to be outside the tolerance range when:
specifying an upper limit interval value and a lower limit interval value that float based on the target output power, and when the current difference value is greater than the upper limit interval value or less than the lower limit interval value, considering that the current difference value is outside a tolerance range; preferably, the upper limit interval value is 0-1W; the lower limit interval value is-1-0W; in this embodiment, the target output power is 50W, the actual output power is 55W, the current difference is 5W, and exceeds the upper limit interval value, and the current difference is considered to be outside the tolerance range;
(II) calculating the accumulated value of the difference values obtained in the last plurality of measurement periods, and when the accumulated value is more than 1W, determining that the current difference value is out of the tolerance range; preferably, the number of the latest measurement periods is 3-8; in this embodiment, the latest 5 accumulated difference values are greater than 1W (the current difference value is 5W, which is greater than 1W), and the current difference value is considered to be outside the tolerance range.
The current difference value is out of the tolerance range, the target output power needs to be adjusted to adjust the output power of the power amplifier, and the specific adjusting method comprises the following steps: subtracting one half of the current difference from the original target output power to obtain the adjusted target output power, and for this embodiment, the calculation formula of the adjusted target output power is 50- (55-50)/2 ═ 47.5W. And searching in the first associated data and the second associated data again according to the mode by taking 47.5W as new target output power to obtain adjusted gain control voltage, and carrying out power amplifier output according to the adjusted gain control voltage value.
In fact, the adjustment of the target output power and the gain control voltage is difficult to be achieved at one time, and multiple approaches are needed, for which, a measurement period needs to be set, after the current period is over, the current output power is measured again in the next period, and whether the difference between the target output power and the actual output power is out of the tolerance range is judged. If the current difference value is out of the tolerance range, the target output power is adjusted again and the gain control voltage is determined again, otherwise, the output control of the power amplifier is suspended and the last updated state is kept.
Further, the present application also provides an automatic control device for power amplifier output, which includes a processing chip and a storage medium, wherein one or more programs are stored in the storage medium and configured to be executed by the processing chip, and the one or more programs are used for driving the processing chip to be configured to execute the automatic control method for power amplifier output as described above.
In a possible implementation manner, the power amplifier automatic control device of the present application includes:
a timer for calculating a measurement period;
the processing chip is used for analyzing and processing the received data signals in the measuring period, sending instruction information to other parts of the power amplifier output automatic control device and executing a preset program;
the memory is used for recording first correlation data between output frequency and gain control voltage, second correlation data between output power and temperature, other preset information and other real-time recorded data for the analysis and processing of the controller;
further, as shown in fig. 1, the processing chip executes the power amplifier output automatic control method according to the program driver stored in the memory: searching in the first associated data and the second associated data in sequence according to the target output power and the target output frequency, and performing power amplifier output according to the initial gain control voltage determined by searching; periodically measuring the current actual output power, and calculating the current difference value between the current actual output power and the target output power; and when the current difference value is out of the tolerance range, after the target output power is adjusted downwards, searching in the first associated data and the second associated data in sequence, and carrying out power amplifier output according to the adjusted gain control voltage determined by searching.
The power amplifier output automatic control device can be integrated in an embedded monitoring system to monitor and automatically control the power amplifier system.
In summary, the method and the device of the application formulate first correlation data between the output frequency and the gain control voltage and second correlation data between the output power and the temperature, after the target output power and the target output frequency are set, the gain control voltage can be quickly confirmed by searching, the background operation is quick, and the efficiency of automatic control of the power amplifier is greatly improved.
The above embodiments are only preferred embodiments of the present application, but not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present application should be construed as equivalents and are included in the scope of the present application.
Claims (10)
1. A method for automatically controlling power amplifier output is characterized by comprising the following steps:
for the appointed power amplifier, measuring and calculating first correlation data between output frequency and gain control voltage and storing the first correlation data, and measuring and calculating second correlation data between output power and temperature and storing the second correlation data;
searching in the first associated data and the second associated data in sequence according to the target output power and the target output frequency, and performing power amplifier output according to the initial gain control voltage determined by searching;
periodically measuring the current actual output power, and calculating the current difference value between the current actual output power and the target output power;
and when the current difference value is out of the tolerance range, after the target output power is adjusted downwards, searching in the first associated data and the second associated data in sequence, and carrying out power amplifier output according to the adjusted gain control voltage determined by searching.
2. The method of claim 1,
the first associated data is obtained by the following method:
selecting characteristic frequency points in a quasi-output frequency range;
measuring gain control voltages corresponding to different output powers in each characteristic frequency point;
collating the data obtained by the measurement to form a table of the first associated data;
the second associated data is obtained by the following method:
measuring compensation voltages corresponding to different temperatures in each characteristic frequency point;
and sorting the data obtained by the measurement to form a table of the second associated data.
3. The method of claim 2, wherein the number of characteristic frequency points is at least 5; the characteristic frequency points comprise two end values of the frequency range to be output.
4. The method of claim 2, wherein the difference between the different output powers is 5-10W; the difference between the different temperatures is 0.2-2 ℃.
5. The method of claim 2, wherein the table of first associated data and the table of second associated data are saved in flash form.
6. The method of claim 1, wherein the target output power is adjusted downward by:
and subtracting one half of the current difference value from the original target output power to obtain the adjusted target output power, and using the adjusted target output power to determine the adjusted gain control voltage.
7. The method of claim 1, wherein the determination of whether the current difference is outside of the tolerance range is one of:
specifying an upper limit interval value and a lower limit interval value which float based on the target output power, and when the current difference value is larger than the upper limit interval value or smaller than the lower limit interval value, considering that the current difference value is out of a tolerance range;
and calculating an accumulated value of the difference values obtained in the last several measurement periods, and when the accumulated value is more than 1W, considering that the current difference value is out of the tolerance range.
8. The method of claim 7, wherein the upper range limit is 0 to 1W; the lower limit interval value is-1-0W; the number of the last measurement cycles is 3-8.
9. The method of claim 1, wherein the current difference is within a tolerance range, and wherein output control of the power amplifier is suspended.
10. An automatic control device for power amplifier output, comprising a processing chip and a storage medium, wherein one or more programs are stored in the storage medium and configured to be executed by the processing chip, and the one or more programs are used for driving the processing chip and are configured to execute the automatic control method for power amplifier output according to claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011608864.3A CN112838837A (en) | 2020-12-30 | 2020-12-30 | Automatic control method and device for power amplifier output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011608864.3A CN112838837A (en) | 2020-12-30 | 2020-12-30 | Automatic control method and device for power amplifier output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112838837A true CN112838837A (en) | 2021-05-25 |
Family
ID=75925388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011608864.3A Pending CN112838837A (en) | 2020-12-30 | 2020-12-30 | Automatic control method and device for power amplifier output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112838837A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5642075A (en) * | 1995-12-21 | 1997-06-24 | Itt Corporation | Sampled data automatic gain control |
| GB9821820D0 (en) * | 1997-10-10 | 1998-12-02 | Motorola Inc | RF transmitter having a temperature compensated output power level control circuit and method therefor |
| JPH1198031A (en) * | 1997-09-19 | 1999-04-09 | Kokusai Electric Co Ltd | Transmitter and its automatic power control method |
| US20020158688A1 (en) * | 2001-02-28 | 2002-10-31 | Jason Terosky | Gain compensation circuit using a variable offset voltage |
| CN1489406A (en) * | 2002-10-10 | 2004-04-14 | 华为技术有限公司 | Automatic correction compensation system and method for mobile terminal |
| CN101013914A (en) * | 2007-02-15 | 2007-08-08 | 中兴通讯股份有限公司 | Automatic gain control method and device for WCDMA mobile terminal |
| US8260226B1 (en) * | 2009-10-28 | 2012-09-04 | Marvell International Ltd. | High-accuracy transmit power control with high-efficiency power amplifier operation |
| CN109981065A (en) * | 2019-03-25 | 2019-07-05 | 睿高(广州)通信技术有限公司 | Power amplifier gain control method, device, power amplification system, storage medium and equipment |
-
2020
- 2020-12-30 CN CN202011608864.3A patent/CN112838837A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5642075A (en) * | 1995-12-21 | 1997-06-24 | Itt Corporation | Sampled data automatic gain control |
| JPH1198031A (en) * | 1997-09-19 | 1999-04-09 | Kokusai Electric Co Ltd | Transmitter and its automatic power control method |
| GB9821820D0 (en) * | 1997-10-10 | 1998-12-02 | Motorola Inc | RF transmitter having a temperature compensated output power level control circuit and method therefor |
| US20020158688A1 (en) * | 2001-02-28 | 2002-10-31 | Jason Terosky | Gain compensation circuit using a variable offset voltage |
| CN1489406A (en) * | 2002-10-10 | 2004-04-14 | 华为技术有限公司 | Automatic correction compensation system and method for mobile terminal |
| CN101013914A (en) * | 2007-02-15 | 2007-08-08 | 中兴通讯股份有限公司 | Automatic gain control method and device for WCDMA mobile terminal |
| US8260226B1 (en) * | 2009-10-28 | 2012-09-04 | Marvell International Ltd. | High-accuracy transmit power control with high-efficiency power amplifier operation |
| CN109981065A (en) * | 2019-03-25 | 2019-07-05 | 睿高(广州)通信技术有限公司 | Power amplifier gain control method, device, power amplification system, storage medium and equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112446976B (en) | Inspection robot, inspection system and inspection method | |
| CN103295650A (en) | Test method, power supply device, power supply evaluation device and simulation method | |
| JP6842213B1 (en) | Simulated battery construction method and simulated battery construction device | |
| JP2019174458A (en) | Device and system for managing test measurement and method for test measurement management system | |
| KR20210135281A (en) | Battery performance evaluation method and battery performance evaluation device | |
| US8407025B2 (en) | Operating parameter control of an apparatus for processing data | |
| CN112838837A (en) | Automatic control method and device for power amplifier output | |
| US20140330437A1 (en) | Facility management device, facility management system, facility management method, and program | |
| CN114062886B (en) | Quantum chip testing method, device and system | |
| CN111181790B (en) | Method, device, equipment and storage medium for quickly generating automatic test script | |
| CN104317205A (en) | Terminal control method and system | |
| CN112118591A (en) | Equipment network state analysis control method, system and computer storage medium | |
| CN105182761A (en) | Specified operation triggering method and device | |
| JP7006587B2 (en) | Feature measurement device, radio environment calculation device, feature measurement method, radio environment measurement method, program | |
| JP5857228B2 (en) | Frequency control method and frequency control system | |
| CN112825104B (en) | Laminated inductor reliability prediction correction method and medium based on temperature and humidity factors | |
| US10237764B2 (en) | Assistance device, assistance method and program | |
| KR20220033143A (en) | Apparatus for analyzing characteristic of power semiconductor device using double pulse test and method for controlling thereof | |
| JP2022157734A (en) | Deterioration state estimation system, deterioration state estimation method, and program | |
| Lugnani et al. | Real-time Coherency Identification using a Window-Size-Based Recursive Typicality Data Analysis | |
| CN116054869B (en) | Integrated signal combiner | |
| CN112445249B (en) | High-precision temperature control method and device, storage medium and electronic equipment | |
| CN105867472A (en) | System and method for controlling optical system of spectrometer to keep at constant temperature | |
| CN114113975A (en) | Chip testing method and device | |
| CN117665441A (en) | Temperature frequency stability test method and system |
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 |