CN104601119A - Open loop characterized temperature-dependent phase tracking and compensating amplifier - Google Patents
Open loop characterized temperature-dependent phase tracking and compensating amplifier Download PDFInfo
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- CN104601119A CN104601119A CN201310526339.0A CN201310526339A CN104601119A CN 104601119 A CN104601119 A CN 104601119A CN 201310526339 A CN201310526339 A CN 201310526339A CN 104601119 A CN104601119 A CN 104601119A
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Abstract
The present invention discloses an open loop characterized temperature-dependent phase tracking and compensating amplifier, which includes a first universal amplifier circuit, a temperature-dependent phase tracking and compensating circuit and a second universal amplifier circuit; and the first universal amplifier circuit and the second universal amplifier circuit provide gain amplification and power amplification for a signal input in the amplifier respectively, the temperature-dependent phase tracking and compensating circuit tracks and compensate for the changes of temperature-dependent phases in the first universal amplifier circuit and the second universal amplifier circuit, achieving stabilization of the temperature-dependent phases of the amplifier. The amplifier of the present invention analyzes the changing trend and range of the temperature-dependent phase of the amplifier per se and performs a change opposite to the trend by using an analog compensation circuit, thereby achieving the aims of counteracting the change in the amplifier product per se, maintaining the stability of the phase of the amplifier product in the situation of varying temperature, and reducing an influence of temperature environment on an index of the phase of the amplifier product.
Description
Technical field
The invention belongs to communications satellite payload system repeater subsystem, particularly a kind of temperature phase tracing compensation amplifier.
Background technology
Under Amplifier Temperature Phase Compensation due to its band wide, working stability, compensation effect is obvious, the features such as circuit form is simple, can solve the problem that phase drift scope under amplifier product temperature is larger preferably.After amplifier product being compensated by Phase Compensation under Amplifier Temperature, significantly can reduce the impact of temperature for amplifier product phase place, make the environment for use of the better adaptive system of amplifier product.
In current military communications satellite system, adopt large-scale array transponder, this transponder system building block amplifier important to it has strict requirement---and amplifier product has strict phase equalization requirement.Because amplifier product consumption is huge, comparatively wide in the distribution of whole star, cause amplifier product can be operated in different temperature ranges.At different temperature, amplifier product is due to the inherent characteristic of self, and its phase place can change, and its phase place of product of diverse location will be caused so different, have a strong impact on the consistency of product, cause system index to decline, can not meet user's requirement.
Solve this problem of homogeneity of product in use procedure, can be solved by the strict environment for use controlling product on the one hand, accomplish that environment for use temperature is consistent.But be unfavorable for the versatility of product like this, limit the scope of application of product, also more harsh requirement is proposed to satellite platform simultaneously; On the other hand can by improving the method for product self-characteristic---temperature phase tracing compensation technology.
Phase Compensation at existing temperature, by adopting FPGA, carrying out Real-time Collection to temperature and carrying out computational analysis, providing compensating parameter, then by control and compensation circuit, carries out the phase compensation at temperature.This compensation method has following shortcoming: 1) can only carry out the segmented compensation at temperature, and the change of product phase place is discontinuous; 2) FPGA is adopted to control, poor reliability and cost is higher, poor universality; 3) debugging is complicated, and reliability is low.
Summary of the invention
Technology of the present invention is dealt with problems and is, overcomes prior art deficiency, provides that a kind of structure is simple, highly versatile, can realize Continuous Compensation at temperature, without the temperature phase tracing compensation amplifier that segmentation affects.
Technical solution of the present invention is, the temperature phase tracing compensation amplifier of a kind of open loop characteristic of the present invention, comprises the first general amplifying circuit, temperature phase tracing compensation circuit and the second general amplifying circuit.Wherein, first general amplifying circuit and the second general amplifying circuit provide gain amplification and power amplification to the signal of input amplifier respectively, temperature phase tracing compensation circuit changes the phase place under the first general amplifying circuit and the second general amplifying circuit temperature and carries out tracing compensation, realizes the phase stabilization under Amplifier Temperature.
Described temperature phase tracing compensation circuit comprises bias control circuit, Input matching block isolating circuit, output matching block isolating circuit and non-linear unit circuit.
Described bias control circuit comprises the 3rd resistance R3, the second resistance R2, the first resistance R1 and thermistor RT1; Biased power supply is through the 3rd resistance R3 and the thermistor RT1 in parallel with it, the bias voltage with temperature correlation is become again after playing the second resistance R2 of series connection dividing potential drop effect, after playing the first resistance R1 of buffer action finally by it, be connected to non-linear unit circuit.
Described Input matching block isolating circuit, comprises the first match circuit 1 and the first capacitance C1; First match circuit carries out radio-frequency (RF) impedance coupling to non-linear unit circuit input end; First capacitance C1 can avoid direct voltage to import prime radio circuit into, and its output is connected to non-linear unit circuit.
Described output matching block isolating circuit comprises the second match circuit and the second capacitance C2; Second match circuit carries out radio-frequency (RF) impedance coupling to non-linear unit circuit output end; Second capacitance C2 can avoid direct voltage to import rear class radio circuit into, and its input is connected to non-linear unit circuit.
Described non-linear unit circuit is made up of nonlinear diode device V1, and this device anode is connected to the output of Input matching block isolating circuit, negativing ending grounding.
Principle of the present invention is: at temperature, the variation tendency of its phase place is amplifier product: along with the change of temperature, and phase place presents nonlinear trend change.Solve amplifier product at temperature phase place drift about, affect this problem of homogeneity of product, need interiors of products design on increase indemnifying measure.The present invention is by varying with temperature the research of trend to amplifier phase, for the trend of its change and the nonlinear feature of variation tendency, add corresponding phase compensating circuit at amplifier interiors of products, the phase place variation tendency at its temperature is contrary with amplifier product variations trend, phase place excursion is suitable.When the temperature is changed, both offset by phase changing capacity, and total phase value is substantially constant or minor variations occurs.
The present invention's advantage is compared with prior art:
1, the present invention is by the variation tendency of phase place under paraphase amplifier product temperature and scope, adopt analog compensation circuit, carry out the change of anti-trend, thus reach the object offsetting amplifier product Self-variation, the stability of amplifier product phase place under holding temperature situation of change, reduces the impact of temperature environment for amplifier product phase index.
2, the present invention is by the research nonlinear device V1 principle that its phase place changes under different bias voltage, devises non-linear unit circuit, achieves the circuit of bias voltage control phase place.Utilize thermistor resistance with the principle of variation of ambient temperature, design bias control circuit (resistor network) simultaneously, achieve the schematic circuit that temperature controls bias voltage.After above two circuit synthesiss, realize the control of ambient temperature to phase place.And it is continuous print that the resistance due to thermistor varies with temperature, bias voltage also consecutive variations thereupon, thus realize non-linear unit circuit RF phase of output signal consecutive variations, overcome the discontinuous shortcoming of conventional compensation mode.
3. the present invention is by studying the dividing potential drop relation of bias control circuit thermistor RT1 and the second resistance R2 and the 3rd resistance R3, realize changing bias voltage variation with temperature scope by debugging the second resistance R2 and the 3rd resistance R3, thus change the temperature phase temperature variant trend of its phase place of compensating circuit and scope, to reach the object adapting to different amplifier.Temperature phase compensating circuit in the present invention, just can adapt to other amplifier by simple debugging method, and compensate the phase place change at its temperature, this circuit has very strong adaptability and versatility, and adjustment method is simple and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is temperature-compensation circuit schematic diagram of the present invention;
Fig. 3 is the temperature phase change comparison diagram adopted before and after the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, a kind of open loop characteristic temperature phase tracing compensation amplifier of the present invention, by the first general amplifying circuit, temperature phase tracing compensation circuit and the second general amplifying circuit composition.Wherein, first general amplifying circuit and the second general amplifying circuit provide gain amplification and power amplification to the signal of input amplifier respectively, temperature phase tracing compensation circuit changes the phase place under the first general amplifying circuit and the second general amplifying circuit temperature and carries out tracing compensation, realizes the phase stabilization under Amplifier Temperature.
As shown in Figure 2, be temperature phase tracing compensation circuit diagram of the present invention, comprise bias control circuit, Input matching block isolating circuit, output matching block isolating circuit and non-linear unit circuit totally four parts.
Described bias control circuit comprises the 3rd resistance R3, the second resistance R2, the first resistance R1 and thermistor RT1.Biased power supply is through the 3rd resistance R3 and the thermistor RT1 in parallel with it, the bias voltage with temperature correlation is become again after playing the second resistance R2 of series connection dividing potential drop effect, after playing the first resistance R1 of buffer action finally by it, be connected to non-linear unit circuit.
Described Input matching block isolating circuit, comprises the first match circuit 1 and the first capacitance C1.First match circuit 1 pair non-linear unit circuit input end carries out radio-frequency (RF) impedance coupling; First capacitance C1 can avoid direct voltage to import prime radio circuit into, and its output is connected to non-linear unit circuit.
Described output matching block isolating circuit comprises the second match circuit 2 and the second capacitance C2.Second match circuit 2 pairs non-linear unit circuit output end carries out radio-frequency (RF) impedance coupling; Second capacitance C2 can avoid direct voltage to import rear class radio circuit into, and its input is connected to non-linear unit circuit.
Described non-linear unit circuit is made up of nonlinear diode device V1, and this device anode is connected to the output of Input matching block isolating circuit, negativing ending grounding.
The present invention utilizes non-linear unit circuit (diode V1) when its bias voltage changes, and the principle that phase place changes thereupon, devises phase compensating circuit.Utilize thermistor resistance temperature variant characteristics design bias control circuit, variations in temperature is converted into the change of bias voltage.After phase compensating circuit and bias control circuit is comprehensive, just form temperature phase tracing compensation circuit, achieve variations in temperature simultaneously phase place change thereupon.Meanwhile, according to the form of the composition of bias control circuit, by adjusting the resistance of the 3rd resistance R3 and the second resistance R2, changing the scope of bias variations, realizing the scope changing phase compensation, to reach the object adapting to different amplifier.The principle of the invention is clear, and structure is simple, and debugging is convenient, successful, applied widely, simultaneously due to the thermistor that adopts at temperature its resistance be consecutive variations, so phase place is also consecutive variations in compensation process, overcome the discontinuous shortcoming of segmented compensation in traditional scheme.
The course of work of the present invention is: first match circuit 1 and the first capacitance C1 of radiofrequency signal first successively in Input matching block isolating circuit of input, then through non-linear unit circuit, last successively through the second capacitance C2 and the second match circuit 2, radiofrequency signal exports.Bias control circuit is connected to non-linear unit circuit, but serves buffer action, so can not be transferred to bias control circuit in radio signal transmission process due to the first resistance R1 radio frequency signal.In the process of radio signal transmission, if ambient temperature there occurs change, the bias voltage that so bias control circuit produces also can change thereupon, causes the phase place of non-linear unit circuit to change, thus compensated amplifier phase place variation with temperature.
The specification of described each device is: the first resistance R1 is 50-60 Ω; Second resistance R2 is 1-1.5k Ω; 3rd resistance R3 is 500-550k Ω; Thermistor RT1 is MF501(2.1-2.7k Ω); First electric capacity C1 is 80-100pF; Second electric capacity C2 is 80-100pF; Diode of the present invention is the MA46580 that MACOM company produces.
In the present embodiment, the first resistance R1 is 51 Ω; Second resistance R2 is 1.3k Ω; 3rd resistance R3 is 510k Ω; Thermistor RT1 is MF501; First electric capacity C1 is 100pF; Second electric capacity C2 is 100pF.
As shown in Figure 3, for being compensated the temperature phase change comparison diagram amplified by the present embodiment.Can find out after increasing Phase Tracking compensating circuit, the phase place change under this amplifier product temperature obtains effective suppression, and phase place stability is at temperature greatly improved.
Certainly, to each building block of the present invention, position relationship and connected mode when not changing its function, the equivalent transformation carried out or alternative, also falls into protection scope of the present invention.
The non-detailed description of the present invention is known to the skilled person technology.
Claims (6)
1. a temperature phase tracing compensation amplifier for open loop characteristic, is characterized in that: comprise the first general amplifying circuit, temperature phase tracing compensation circuit and the second general amplifying circuit; First general amplifying circuit and the second general amplifying circuit provide gain amplification and power amplification to the signal of input amplifier respectively, temperature phase tracing compensation circuit changes the phase place under the first general amplifying circuit and the second general amplifying circuit temperature and carries out tracing compensation, realizes the phase stabilization under Amplifier Temperature.
2. the temperature phase tracing compensation amplifier of a kind of open loop characteristic according to claim 1, is characterized in that: described temperature phase tracing compensation circuit comprises bias control circuit, Input matching block isolating circuit, output matching block isolating circuit and non-linear unit circuit.
3. the temperature phase tracing compensation amplifier of a kind of open loop characteristic according to claim 2, is characterized in that: described bias control circuit comprises the 3rd resistance R3, the second resistance R2, the first resistance R1 and thermistor RT1; Biased power supply is through the 3rd resistance R3 and the thermistor RT1 in parallel with it, the bias voltage with temperature correlation is become again after playing the second resistance R2 of series connection dividing potential drop effect, after playing the first resistance R1 of buffer action finally by it, be connected to non-linear unit circuit.
4. the temperature phase tracing compensation amplifier of a kind of open loop characteristic according to claim 2, is characterized in that: described Input matching block isolating circuit, comprises the first match circuit (1) and the first capacitance C1; First match circuit (1) carries out radio-frequency (RF) impedance coupling to non-linear unit circuit input end; First capacitance C1 can avoid direct voltage to import prime radio circuit into, and its output is connected to non-linear unit circuit.
5. the temperature phase tracing compensation amplifier of a kind of open loop characteristic according to claim 2, is characterized in that: described output matching block isolating circuit comprises the second match circuit (2) and the second capacitance C2; Second match circuit (2) carries out radio-frequency (RF) impedance coupling to non-linear unit circuit output end; Second capacitance C2 can avoid direct voltage to import rear class radio circuit into, and its input is connected to non-linear unit circuit.
6. the temperature phase tracing compensation amplifier of a kind of open loop characteristic according to claim 2, it is characterized in that: described non-linear unit circuit is made up of nonlinear diode device V1, this device anode is connected to the output of Input matching block isolating circuit, negativing ending grounding.
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| CN201310526339.0A CN104601119A (en) | 2013-10-30 | 2013-10-30 | Open loop characterized temperature-dependent phase tracking and compensating amplifier |
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| CN201310526339.0A CN104601119A (en) | 2013-10-30 | 2013-10-30 | Open loop characterized temperature-dependent phase tracking and compensating amplifier |
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Cited By (5)
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| CN105305977A (en) * | 2015-10-28 | 2016-02-03 | 深圳市金溢科技股份有限公司 | Temperature compensation power amplifying method, radio-frequency amplifier circuit and reader-writer |
| CN108155876A (en) * | 2016-12-06 | 2018-06-12 | 株式会社村田制作所 | High-frequency model and communication device |
| CN110311631A (en) * | 2019-05-29 | 2019-10-08 | 上海联影医疗科技有限公司 | Radio-frequency power amplifier, radio-frequency power amplifying method and magnetic resonance imaging system |
| CN113134155A (en) * | 2021-04-06 | 2021-07-20 | 武汉光燚激光科技有限公司 | Skin therapeutic instrument by transdermal diffusion |
| CN115541983A (en) * | 2022-11-24 | 2022-12-30 | 南京中旭电子科技有限公司 | Hall current sensor with digital signal output |
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| CN110311631A (en) * | 2019-05-29 | 2019-10-08 | 上海联影医疗科技有限公司 | Radio-frequency power amplifier, radio-frequency power amplifying method and magnetic resonance imaging system |
| CN110311631B (en) * | 2019-05-29 | 2023-06-27 | 上海联影医疗科技股份有限公司 | Radio frequency power amplifier, radio frequency power amplifying method and magnetic resonance imaging system |
| CN113134155A (en) * | 2021-04-06 | 2021-07-20 | 武汉光燚激光科技有限公司 | Skin therapeutic instrument by transdermal diffusion |
| CN115541983A (en) * | 2022-11-24 | 2022-12-30 | 南京中旭电子科技有限公司 | Hall current sensor with digital signal output |
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