CN1349309A - Gain temperature compensator for transceiver - Google Patents
Gain temperature compensator for transceiver Download PDFInfo
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- CN1349309A CN1349309A CN 00125730 CN00125730A CN1349309A CN 1349309 A CN1349309 A CN 1349309A CN 00125730 CN00125730 CN 00125730 CN 00125730 A CN00125730 A CN 00125730A CN 1349309 A CN1349309 A CN 1349309A
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Abstract
The invention apapratus consists of power controlled voltage circuit, level processing circuit and controlled gain amplifier which are connected successively and temp. compensation circuit between the level processing circuit and controlled gain amplifier. The controlling signal of level processing circuit is received by said temp. compensation circuit, then to be transmitted to the controlled gain amplifier after being processed for controlling variable gain amplifier which can be substututed by electrically tuned attenuator. The invention apparatus has simple structure and can make transceiver working steady and reliably under high or low temp..
Description
The present invention relates to field of wireless communication, relate in particular to modifying device transceiver.
In traditional transceiver, electrically controlled attenuator and variable-gain intermediate frequency amplifier are its indispensable part (both must have one at least), the power control of realization base station is mainly finished by this part, the controlled way of this gain amplifier or electrically controlled attenuator has two kinds of forms, a kind of is the fixed-bias transistor circuit formula, be used to adjust the gain of whole system, guarantee consistency of product.A kind of is the dynamically changeable voltage control mode, and its controlled voltage is from band processing system, and band processing system is determined the system gain of sender according to the signal power of accepting in good time, thereby provides control voltage, so this voltage changes.Fig. 1 is not for to carry out the transceiver gains of temperature-compensating with the variation of temperature curve, its excursion is up to 5dB, in the prior art, generally be to carry out temperature-compensating under high and low temperature environment, changing bigger situation, practices well is to introduce negative-feedback circuit in final power amplifier or penultimate stage drive circuit, negative feedback by direct current biasing, stablize final power output, this way is applicable to the power amplification circuit of being made up of power tube in early days, and can only be that gain at power amplifier compensates, just powerless for the gain of whole system.Development along with technology, the utilization of integrated power amplifier more and more widely, though integrated power amplifier has the simplification circuit design, improve the advantage of equipment dependability, but the problem of thereupon bringing is the power output that is difficult to compensate under the high low temperature, make system be difficult to work reliable and stable under the environment of high low temperature, adopting traditional temperature compensation on integrated power amplifier obviously is impossible realize, has so just greatly limited the application of integrated power amplifier.
The purpose of this invention is to provide a kind of gain temperature compensator that can effectively improve in the transceiver simple in structure, to overcome above-mentioned shortcoming, make and adopt the transceiver of traditional gain compensation circuit and integrated power amplifier under the situation of high low temperature, still can reliablely and stablely work, and can carry out temperature-compensating, rather than merely certain part is compensated the gain of whole system.
For achieving the above object, the present invention has constructed a kind of gain temperature compensator that is used for transceiver, and this device comprises the power control potential circuit that links to each other successively, level treatment circuit and controllable gain amplifier or electrically controlled attenuator.
Wherein, power control voltage input circuit can be from band processing system, also from a fixed bias voltage input circuit, for controllable gain amplifier or electrically controlled attenuator provide suitable control voltage;
The level treatment circuit is finished the processing to the control voltage of original input, so that take the temperature-compensating measure on this voltage;
Variable gain amplifier or electrically controlled attenuator are realized the adjustment to gain.
It is characterized in that this device also comprises existing power control voltage is carried out that level is handled and temperature-compensating.This circuit between level treatment circuit and controllable gain amplifier or electrically controlled attenuator, the control signal that the incoming level treatment circuit transmits, and the control signal after will handling sends to controllable gain amplifier or electrically controlled attenuator.Go control itself to have the variable gain amplifier or the electrically controlled attenuator of gain control end with the output of described temperature-compensation circuit, thereby realize the constant gain output under the high and low temperature environment.
The present invention is described further below in conjunction with drawings and Examples.
Fig. 1 is not for to carry out the transceiver gains of temperature-compensating with the variation of temperature curve chart;
Fig. 2 is a structured flowchart of the present invention;
Fig. 3 for the compensation after gain with the variation of temperature curve chart;
Fig. 4 a is the available circuit figure that one embodiment of the present of invention contrasted;
Fig. 4 b is the circuit diagram of one embodiment of the present of invention;
Fig. 5 a is the available circuit figure that another embodiment of the present invention contrasted;
Fig. 5 b is the circuit diagram of another embodiment of the present invention;
Fig. 6 is the voltage control curve chart for the contrast circuit of another embodiment of the present invention;
Fig. 7 is power control voltage and original power control voltage ratio graph of a relation of level amplifier output in the another embodiment of the present invention.
Fig. 1 for the transceiver gains of not carrying out temperature-compensating with the variation of temperature curve, from this curve as can be seen, when not carrying out temperature-compensating, the change in gain amplitude of transceiver can obviously can't satisfy the stable needs of system up to 5dB.
As can be seen from Figure 2, the present invention improves original transceiver, between level treatment circuit and controllable gain amplifier or electrically controlled attenuator, increased temperature-compensation circuit, the control signal that this circuit incoming level treatment circuit transmits, and the control signal after will handling sends to controllable gain amplifier or electrically controlled attenuator.Go control itself to have the variable gain amplifier or the electrically controlled attenuator of gain control end with the output of described temperature-compensation circuit.The not enough problem of stability under high low temperature changes has been avoided in this improvement effectively.
Fig. 3 be one through the gain after the temperature-compensation circuit compensation with the variation of temperature curve, it is the gain temperature curve of the transceiver of embodiment Fig. 4 b realization, the variation that it will gain is reduced in the 2dB about by original 5dB, and Fig. 3 has very clearly shown the significance of temperature-compensation circuit for transceiver stability under high low temperature changes.
Fig. 4 a is original power control circuit, and power control voltage is a fixed bias, changes control voltage by regulator potentiometer RP1, reaches the purpose of regulating gain.This voltage is about 1V under the normal temperature.And the forward control characteristic of variable gain amplifier is, control change in voltage 0.1V, and its change in gain is about 3dB.
Fig. 4 b is the circuit diagram of one embodiment of the present of invention, it is used for power control voltage is the occasion of fixed value, it is a voltage control circuit with temperature-compensating, R1, R2, Rt, RP1 form bleeder circuit, R2 be in series with R1 after Rt is in parallel, constitute the upper offset of bias pressure circuit, be in series with potentiometer RP1 again.The other end of R1 with connect power control voltage, the tie point of upper offset and potentiometer RP1 is connected to controllable gain amplifier or electrically controlled attenuator simultaneously.Regulator potentiometer RP1 can change control voltage, thus the gain of control system.In the present embodiment, the gain controlling that realizes is forward control, promptly controlling voltage rises, gain is risen, voltage reduces, gain reduces, normal gain needs the control voltage of IV, confesses the 1V bias voltage after dividing potential drop, R1=51K R2=20K Rt=10K under the normal temperature with the 3V power supply of pressurizer output, RP is the 50K potentiometer, the resistance that participates in dividing potential drop is about 30K substantially, and Rt one has the thermistor of negative temperature coefficient, in-40 ℃ to 120 ℃ range of temperature, resistance can be certain the slope linear change, its resistance at 25 ℃ is 10K Ω, and impedance is 2.4K Ω in the time of 60 ℃, like this when temperature rises to 60 ℃, control voltage just rises to 1.0830V by the 1.0266V of normal temperature, thereby remedies the reduction of power output under the high temperature.And reduce to-40 ℃ when temperature, the Rt resistance is 333K Ω, near open circuit, controls voltage and just reduces to 0.9V by the 1.0266V of normal temperature this moment, has suppressed the power under the low temperature and has risen.In the present embodiment, control change in voltage 0.1V, its change in gain is about 3dB, and generally speaking, the moving rate output of sender about decline 2.5dB, about rising 2.5dB, finds out that thus this circuit has well compensated the change in gain under the high low temperature in the time of-40 ℃ in the time of 65 ℃.
Need to prove that the structure of this circuit can be to change flexibly, the type of thermistor also is not limited to negative temperature coefficient.When it is positive temperature coefficient, it is put in the below-center offset unit with R2 gets final product, shown in Fig. 4 c.And when controlled device is reverse control characteristic, the residing position of thermistor (upper offset, below-center offset) and opposite the getting final product of forward control.Key is the choose reasonable divider resistance, makes the change in resistance scope of its thermistor satisfy the gain level control range that will realize.
Fig. 5 a is another original power control circuit, and its power control voltage is from the base band control system, and the voltage control curve as shown in Figure 6.
Fig. 5 b is the circuit diagram of another embodiment of the present invention, and it is applicable to that power control voltage is under the situation of changing value.Wherein 1 is original power control voltage, is provided by the base band control system.2 is level amplifier, finishes the level of original power control voltage is handled.In conjunction with shown in Figure 7, the power control voltage of level amplifier output and original power control voltage are proportionate relationship, and n is the voltage gain of amplifier, determines its parameter in conjunction with the requirement of follow-up temperature-compensation circuit.3 is temperature-compensation circuit.Make the control curve of control voltage conforms Fig. 9 of final output by the bias pressure circuit.Because final control voltage has temperature compensation function, thereby realize that the constant gain high and low temperature environment shown in Figure 3 under exports.
In sum, the device of the improvement gain temperature-compensating that the present invention constructed, by on original power control voltage basis, increasing a spot of hardware circuit, just can finish the temperature compensation function of gain under high and low temperature environment to whole system, rather than traditional only some parts of system are carried out temperature-compensating respectively, the more important thing is, the present invention has solved well when adopting integrated power amplifier, can't carry out the problem of temperature-compensating to system gain, make transceiver under high and low temperature environment, can work reliable and stablely.
Claims (8)
1, a kind of gain temperature compensator that is used for transceiver, comprise the power control potential circuit that links to each other successively, level treatment circuit and controllable gain amplifier, it is characterized in that, this gain temperature compensator also comprises the temperature-compensation circuit that is used for system gain is carried out temperature-compensating, this circuit is between level treatment circuit and controllable gain amplifier, the control signal that the incoming level treatment circuit transmits, and the control signal after will handling sends to controllable gain amplifier, goes control itself to have the variable gain amplifier of gain control end with its output.
2, the gain temperature compensator that is used for transceiver according to claim 1 is characterized in that described controllable gain amplifier can replace with electrically controlled attenuator.
3, the gain temperature compensator that is used for transceiver according to claim 1 and 2, it is characterized in that, described temperature-compensation circuit is formed bleeder circuit by R1, R2, Rt, RP1, R2 is in series with an end after Rt is in parallel and R1, constitute the upper offset unit of bias pressure circuit, another termination power control voltage of R1; R2 is in series with potentiometer RP1 with the other end after Rt is in parallel again; The tie point of described upper offset unit and potentiometer RP1 is connected to controllable gain amplifier or electrically controlled attenuator as output.
4, the gain temperature compensator that is used for transceiver according to claim 3 is characterized in that: in the described temperature-compensation circuit, and R1=51K, R2=20K under the normal temperature; RP is the 50K potentiometer.
5, the gain temperature compensator that is used for transceiver according to claim 4 is characterized in that: the resistance that participates in dividing potential drop among the described RP is 30K.
6, the gain temperature compensator that is used for transceiver according to claim 3 is characterized in that: in the temperature-compensation circuit of stating, Rt one has the thermistor of negative temperature coefficient.
7, the gain temperature compensator that is used for transceiver according to claim 6, it is characterized in that: the negative temperature coefficient of described thermistor Rt is meant, in-40 ℃ to 120 ℃ range of temperature, with certain slope linear change, its resistance at 25 ℃ is 10K Ω, and impedance is 2.4K Ω in the time of 60 ℃.
8, the gain temperature compensator that is used for transceiver according to claim 6, it is characterized in that, described thermistor Rt type can also be the thermistor with positive temperature coefficient, is in series with an end after R2 is in parallel and R1, constitutes the below-center offset unit of bias pressure circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001257307A CN100488062C (en) | 2000-10-18 | 2000-10-18 | Gain temperature compensator for transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001257307A CN100488062C (en) | 2000-10-18 | 2000-10-18 | Gain temperature compensator for transceiver |
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| Publication Number | Publication Date |
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| CN1349309A true CN1349309A (en) | 2002-05-15 |
| CN100488062C CN100488062C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB001257307A Expired - Fee Related CN100488062C (en) | 2000-10-18 | 2000-10-18 | Gain temperature compensator for transceiver |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090275B (en) * | 2007-06-22 | 2010-06-16 | 中兴通讯股份有限公司 | Transmitter system of implementing temp. compensation and its temp. compensation circuit |
| WO2012027982A1 (en) * | 2010-09-03 | 2012-03-08 | 中兴通讯股份有限公司 | Complementary enhanced power compensating method, apparatus and communication device |
| CN102840920A (en) * | 2012-08-03 | 2012-12-26 | 中国科学院空间科学与应用研究中心 | Biasing circuit and temperature compensation low-frequency amplification circuit for microwave radiometer |
| CN103812452A (en) * | 2012-11-14 | 2014-05-21 | 环旭电子股份有限公司 | Electronic system, radiofrequency power amplifier and temperature compensation method of radiofrequency power amplifier |
| CN104063977A (en) * | 2013-03-20 | 2014-09-24 | 上海申达自动防范系统工程有限公司 | Leakage cable detector transmitting device with temperature automatic compensation function and system thereof |
| CN104601119A (en) * | 2013-10-30 | 2015-05-06 | 西安空间无线电技术研究所 | Open loop characterized temperature-dependent phase tracking and compensating amplifier |
| CN107026623A (en) * | 2016-01-15 | 2017-08-08 | 三菱电机株式会社 | Power amplifier |
| CN107332536A (en) * | 2017-07-03 | 2017-11-07 | 重庆西南集成电路设计有限责任公司 | It is a kind of precisely to debug the temperature-compensation circuit and method of gain |
| CN116094476A (en) * | 2023-04-11 | 2023-05-09 | 上海安其威微电子科技有限公司 | Circuit structure with gain compensation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4586234B2 (en) * | 2000-04-28 | 2010-11-24 | 住友化学株式会社 | Method for producing thermoplastic resin composition |
-
2000
- 2000-10-18 CN CNB001257307A patent/CN100488062C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101090275B (en) * | 2007-06-22 | 2010-06-16 | 中兴通讯股份有限公司 | Transmitter system of implementing temp. compensation and its temp. compensation circuit |
| WO2012027982A1 (en) * | 2010-09-03 | 2012-03-08 | 中兴通讯股份有限公司 | Complementary enhanced power compensating method, apparatus and communication device |
| CN102840920A (en) * | 2012-08-03 | 2012-12-26 | 中国科学院空间科学与应用研究中心 | Biasing circuit and temperature compensation low-frequency amplification circuit for microwave radiometer |
| CN103812452A (en) * | 2012-11-14 | 2014-05-21 | 环旭电子股份有限公司 | Electronic system, radiofrequency power amplifier and temperature compensation method of radiofrequency power amplifier |
| CN103812452B (en) * | 2012-11-14 | 2016-09-21 | 环旭电子股份有限公司 | Electronic system, radio-frequency power amplifier and temperature compensation thereof |
| CN104063977A (en) * | 2013-03-20 | 2014-09-24 | 上海申达自动防范系统工程有限公司 | Leakage cable detector transmitting device with temperature automatic compensation function and system thereof |
| CN104063977B (en) * | 2013-03-20 | 2016-07-06 | 上海申达自动防范系统工程有限公司 | There is leaky cable detector discharger and the system of temperature self-compensation function |
| CN104601119A (en) * | 2013-10-30 | 2015-05-06 | 西安空间无线电技术研究所 | Open loop characterized temperature-dependent phase tracking and compensating amplifier |
| CN107026623A (en) * | 2016-01-15 | 2017-08-08 | 三菱电机株式会社 | Power amplifier |
| CN107026623B (en) * | 2016-01-15 | 2020-08-07 | 三菱电机株式会社 | Power amplifier |
| CN107332536A (en) * | 2017-07-03 | 2017-11-07 | 重庆西南集成电路设计有限责任公司 | It is a kind of precisely to debug the temperature-compensation circuit and method of gain |
| CN116094476A (en) * | 2023-04-11 | 2023-05-09 | 上海安其威微电子科技有限公司 | Circuit structure with gain compensation |
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| Publication number | Publication date |
|---|---|
| CN100488062C (en) | 2009-05-13 |
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Granted publication date: 20090513 Termination date: 20131018 |