CN201345639Y - Intelligent device for temperature compensation of power amplifier tube - Google Patents
Intelligent device for temperature compensation of power amplifier tube Download PDFInfo
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- CN201345639Y CN201345639Y CNU2008201463316U CN200820146331U CN201345639Y CN 201345639 Y CN201345639 Y CN 201345639Y CN U2008201463316 U CNU2008201463316 U CN U2008201463316U CN 200820146331 U CN200820146331 U CN 200820146331U CN 201345639 Y CN201345639 Y CN 201345639Y
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Abstract
The utility model relates to the technical field of accurate and automatic control, in particular to an intelligent device for temperature compensation of a power amplifier tube. The device comprises a data processing module, a data storage module, a current detection module, a temperature detection module, a communication interface module and a digital potentiometer, wherein, the data storage module, the current detection module, the temperature detection module, the communication interface module and the digital potentiometer are respectively connected with the data processing module; one end of the current detection module is connected with a power supply, and the other end is connected with the drain electrode of the power amplifier tube; and the digital potentiometer is connected with the grid electrode of the power amplifier tube through a bias resistor. The device has the advantages of simplicity and effectiveness; and the procedure of data acquisition can be accomplished automatically, thereby lowering the experimental cost, improving the development rate of products as well as the performance.
Description
[technical field]
The utility model relates to accurate automatic control technology field, relates in particular to a kind of intelligent apparatus that is used to do the power tube temperature-compensating.
[background technology]
Power amplifier is a kind of application electronic unit very widely, and especially when power amplifier was applied in wireless communication field, it was used for amplifying various radiofrequency signals, and the signal after the amplification outputs to antenna, launches, to reach the purpose of effective covering.Which kind of technology no matter the core devices power tube that is used for the design power amplifier adopt make, and its operating characteristic all can be subjected to the influence of ambient temperature and change, and this influence is mainly reflected in linearity variation on performance, change in gain.If linearity variation might cause the interference to adjacent channel communication.If system gain changes, will cause in the winter time to change with the scope that summer, mobile device covered, can cause the not enough or interference among adjacent cells of coverage.
For overcoming this influence, in the design amplifier, generally power tube is carried out temperature-compensating, the characteristic of power tube under the varying environment temperature remained unchanged substantially.And the main cause that causes the characteristic variations of power tube is when different temperatures, the drift of power tube quiescent point.Therefore, the work of temperature-compensating mainly is how to keep quiescent point constant by compensation.Traditional method is to adopt analog circuit, by adopting a analog circuit as the power tube gate bias circuit with compensating device formation opposite with the temperature characterisitic of power tube, by the thermocycling of doing repeatedly, debug out the one group of circuit that can stablize the power tube working point preferably.
Yet the way of this analog circuit has very big shortcoming.At first the characteristic of simulating diode of its usefulness or triode can't be adjusted to the temperature characterisitic of power tube identically, and this just can not accomplish in the total temperature scope, all compensates better.Secondly,, need repeatedly experiment with measuring, debug, just can reach result preferably owing to be analog circuit.Need the more time of cost, prolong the cycle of product development.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of intelligent apparatus that is used to do the power tube temperature-compensating, by adaptively the power tube temperature parameter being sampled and controlling, come intelligently the test adjustment process to be simplified, improve the compensation accuracy, improve the efficient of test.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of intelligent apparatus that is used to do the power tube temperature-compensating comprises data processing module, data memory module, current detection module, temperature detecting module, digital regulation resistance; Wherein data memory module, current detection module, temperature detecting module, digital regulation resistance are connected with data processing module respectively; Current detection module one end connects power supply, and the other end is connected to the power tube drain electrode; Digital regulation resistance is connected to the power tube grid by biasing resistor.
Also comprise communication interface module, this communication interface module is connected to described data processing module.
Adopt technical scheme described in the utility model, the adjusting bias voltage at first is set, power tube drain current size is adjusted to the static working current that needs, then, power tube is put into the temperature cycles high-low temperature chamber, make the power tube ambient temperature from-40 ℃ to+85 ℃ the circulation.In this process, current detection module can detect the variation of power amplifier drain current temperature influence, detects this variation and is sent back to after data processing module handles, and keeps constant substantially by adjusting the electric current that the power tube bias voltage guarantees drain electrode.This process continues always, and in the process of temperature cycles, the supply power voltage that remains drain electrode is constant.Simultaneously, data processing processing module record is also preserved bias voltage required when keeping drain current constant under the Current Temperatures, finally exports the characteristic curve of a temperature and bias voltage, and by repeatedly gathering this curve, an averaged curve is got in final match.After data acquisition is finished, this temperature is exported to the digital regulation resistance of the power tube biasing circuit that has memory function to the curve of voltage, digital regulation resistance just can be according to detected temperature like this, in storage list, search corresponding bias voltage and supply with power tube, so just realized temperature-compensating accurately power tube.This device is effectively simple, and because the process of this image data can be finished fully automatically, therefore can reduce experimentation cost, improves product development speed, improves performance simultaneously.
[description of drawings]
In conjunction with the embodiments the utility model being done one with reference to the accompanying drawings describes in detail.
Fig. 1 is the utility model structural representation.
Fig. 2 is the bias voltage curve chart after the utility model match.
Fig. 3 is that power tube is not made the quiescent current temperature characterisitic table when compensating.
Fig. 4 is the power tube drain current temperature characterisitic table after overcompensation.
[embodiment]
Seeing also shown in Figure 1ly, is the utility model structural representation.A kind of intelligent apparatus that is used to do the power tube temperature-compensating comprises data processing module, data memory module, current detection module, temperature detecting module, communication interface module, digital regulation resistance; Wherein data memory module, current detection module, temperature detecting module, communication interface module, digital regulation resistance are connected with data processing module respectively; Current detection module one end connects power supply, and the other end is connected to the power tube drain electrode; Digital regulation resistance is connected to the power tube grid by biasing resistor.The power tube source ground.
The adjusting bias voltage at first is set, power tube drain current size is adjusted to the static working current that needs, then, power tube is put into the temperature cycles high-low temperature chamber, make the power tube ambient temperature from-40 ℃ to+85 ℃ circulation.In this process, current detection module can detect the variation of power tube drain current temperature influence, detects this variation and is sent back to after data processing module handles, and keeps constant substantially by adjusting the electric current that the power tube bias voltage guarantees drain electrode.This process continues always, and in the process of temperature cycles, the supply power voltage that remains drain electrode is constant.Simultaneously, the data processing module record is also preserved bias voltage required when keeping drain current constant under the Current Temperatures, finally exports the characteristic curve of a temperature and bias voltage, by repeatedly gathering this curve, an averaged curve is got in final match, as shown in Figure 2.After data acquisition is finished, this temperature is exported to the digital regulation resistance of the power tube biasing circuit that has memory function to the curve of voltage, digital regulation resistance just can be according to detected temperature like this, in storage list, search corresponding bias voltage and supply with power tube, so just realized temperature-compensating accurately power tube.Quiescent current temperature characterisitic table when Fig. 3 does not do compensation for power tube, through the drain current temperature characterisitic table after the automatic compensation of this device as shown in Figure 4.
The temperature of storing in the data memory module and the characteristic curve of bias voltage can send on the host computer computer through communication interface module, can analyze the performance of such power tube behind the characteristic curve that collects certain class power tube temperature and bias voltage in a large number.
This device is effectively simple, and because the process of this image data can be finished fully automatically, therefore can reduce experimentation cost, improves product development speed, improves performance simultaneously.
Claims (2)
1, a kind of intelligent apparatus that is used for the power tube temperature-compensating is characterized in that: comprise data processing module, data memory module, current detection module, temperature detecting module, digital regulation resistance; Wherein data memory module, current detection module, temperature detecting module, digital regulation resistance are connected with data processing module respectively; Current detection module one end connects power supply, and the other end is connected to the power tube drain electrode; Digital regulation resistance is connected to the power tube grid by biasing resistor.
2, a kind of intelligent apparatus that is used for the power tube temperature-compensating as claimed in claim 1, it is characterized in that: also comprise communication interface module, this communication interface module is connected to described data processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201463316U CN201345639Y (en) | 2008-11-14 | 2008-11-14 | Intelligent device for temperature compensation of power amplifier tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201463316U CN201345639Y (en) | 2008-11-14 | 2008-11-14 | Intelligent device for temperature compensation of power amplifier tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345639Y true CN201345639Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201463316U Expired - Fee Related CN201345639Y (en) | 2008-11-14 | 2008-11-14 | Intelligent device for temperature compensation of power amplifier tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN201345639Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869846A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Major loop hot and cold segment average temperature signal processing method |
| CN106443123A (en) * | 2016-08-29 | 2017-02-22 | 武汉邮电科学研究院 | Power amplifier quiescent operating point measurement method and system for mobile communication |
| CN108181964A (en) * | 2017-12-26 | 2018-06-19 | 西安格威石油仪器有限公司 | Temperature-compensation circuit |
| CN113375817A (en) * | 2021-06-23 | 2021-09-10 | 厦门极深微电子技术有限公司 | Display device of nonlinear temperature |
-
2008
- 2008-11-14 CN CNU2008201463316U patent/CN201345639Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869846A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Major loop hot and cold segment average temperature signal processing method |
| CN103869846B (en) * | 2012-12-14 | 2015-11-25 | 中国核动力研究设计院 | A kind of major loop cold and hot section of medial temperature signal processing method |
| CN106443123A (en) * | 2016-08-29 | 2017-02-22 | 武汉邮电科学研究院 | Power amplifier quiescent operating point measurement method and system for mobile communication |
| CN108181964A (en) * | 2017-12-26 | 2018-06-19 | 西安格威石油仪器有限公司 | Temperature-compensation circuit |
| CN113375817A (en) * | 2021-06-23 | 2021-09-10 | 厦门极深微电子技术有限公司 | Display device of nonlinear temperature |
| CN113375817B (en) * | 2021-06-23 | 2022-05-03 | 厦门极深微电子技术有限公司 | Display device of nonlinear temperature |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20121114 |