CN106124968A - A kind of power amplifier parallel connection debugging apparatus and method - Google Patents
A kind of power amplifier parallel connection debugging apparatus and method Download PDFInfo
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- CN106124968A CN106124968A CN201610701338.9A CN201610701338A CN106124968A CN 106124968 A CN106124968 A CN 106124968A CN 201610701338 A CN201610701338 A CN 201610701338A CN 106124968 A CN106124968 A CN 106124968A
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- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 36
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005284 excitation Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
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Abstract
The invention provides a kind of power amplifier parallel connection debugging apparatus and method, device includes signal generating unit and parameter measurement unit, same input signal is provided the power amplifier to multiple parallel connections by signal generating unit respectively, signal is amplified by power amplifier, and exports multiple amplification signal；The parameter of multiple amplification signals is measured by parameter measurement unit, obtains measurement result, and this measurement result is for debugging power amplifier, so that the parameter amplifying signal of multiple power amplifier output is consistent.The present invention can be to multiple power amplifiers debugging in parallel, it is ensured that the concordance of each power amplifier parameter, to improve expanding element quantity in parallel, and then improves output.
Description
Technical field
The present invention is related to power amplifier, particularly relates to a kind of power amplifier parallel connection debugging apparatus and method.
Background technology
Output is the technical specification that power amplifier is important, and therefore improving output is the mesh that development person asks most
One of mark.To power device (such as: electron tube, transistor, VDMOS manage) carry out parallel connection, be improve output important side
One of method.This method motility is high, and power density is big, can conveniently realize system redundancy.
But during realizing, there is following technological deficiency in prior art: general power amplifier is with voltage source side
Formula output, and voltage source is made up of electromotive force E and internal resistance Ri.The internal resistance Ri of ideal voltage source is equal to zero, therefore,
If the electromotive force E of two voltage sources is unequal, then the outfan at them necessarily leads to circulation or the higher-order of oscillation, thus causes putting
The big serious internal loss heating of device even burns.Accordingly, it would be desirable to middle control unit accurately controls the sequential ginseng of each parallel power amplifier
Number.And along with parallel units expands, the problem that between each power amplifier, matching degree causes is the most serious.Therefore, it is typically only capable to
Carry out limited parallel connection, power expansion limited ability
Summary of the invention
(1) to solve the technical problem that
It is an object of the invention to, it is provided that a kind of power amplifier parallel connection debugging apparatus and method, can be in parallel multiple
Power amplifier is debugged, it is ensured that the concordance of each power amplifier parameter, to improve expanding element quantity in parallel, and then improves
Output.
(2) technical scheme
The present invention provides a kind of power amplifier parallel connection debugging apparatus, including:
Signal generating unit, it is connected with the signal input part of the power amplifier of multiple parallel connections, for by same input
Signal provides respectively to the plurality of power amplifier, and wherein, this signal is amplified by multiple power amplifiers, and exports many
Individual amplification signal；
Parameter measurement unit, it is connected with the signal output part of multiple power amplifiers, for multiple amplification signals
Parameter measures, and obtains measurement result, and this measurement result is for debugging power amplifier, so that multiple power amplification
The parameter amplifying signal of device output is consistent.
The present invention also provides for a kind of power amplifier parallel connection adjustment method, including:
S1, provides same input signal respectively to multiple power amplifiers in parallel, wherein, multiple power amplifiers pair
This signal is amplified, and exports multiple amplification signal；
S2, measures the parameter of multiple amplification signals, obtains measurement result, and this measurement result is for power amplification
Device is debugged, so that the parameter amplifying signal of multiple power amplifier output is consistent.
(3) beneficial effect
The present invention can measure output signal parameter and the running parameter of multiple power amplifiers of parallel connection simultaneously, according to this
A little parameter regulation power amplifiers, improve different capacity amplifier concordance, it is thus possible to reduce the vibration after each unit parallel connection, from
And improve output.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the power amplifier parallel connection debugging apparatus that the present invention provides.
Fig. 2 is the structural representation of parameter measurement unit in the present invention.
Fig. 3 is power supply and the structural representation of power amplifier in the present invention.
Fig. 4 is the schematic diagram of the power amplifier parallel connection debugging apparatus that the embodiment of the present invention provides.
Detailed description of the invention
The present invention provides a kind of power amplifier parallel connection debugging apparatus and method, and device includes signal generating unit and parameter
Measuring unit, same input signal is provided the power amplifier to multiple parallel connections, power amplifier by signal generating unit respectively
Signal is amplified, and exports multiple amplification signal；The parameter of multiple amplification signals is measured by parameter measurement unit,
To measurement result, this measurement result is for debugging power amplifier, so that the amplification letter of multiple power amplifier output
Number parameter consistent.The present invention can be to multiple power amplifiers debugging in parallel, it is ensured that each power amplifier parameter consistent
Property, to improve expanding element quantity in parallel, and then improve output.
Fig. 1 is the schematic diagram of the power amplifier parallel connection debugging apparatus that the present invention provides, as it is shown in figure 1, device includes letter
Number generating unit and parameter measurement unit, signal generating unit is connected with the signal input part of the power amplifier of multiple parallel connections,
For providing same input signal to multiple power amplifiers respectively, wherein, this signal is put by multiple power amplifiers
Greatly, and export multiple amplification signal；Parameter measurement unit is connected with the signal output part of multiple power amplifiers, for multiple
The parameter amplifying signal measures, and obtains measurement result, and measurement result is used for debugging power amplifier, so that multiple
The parameter amplifying signal of power amplifier output is consistent.Specifically, including internal resistance unit in power amplifier, it is by many
Level internal resistance composition, on the basis of a power amplifier, can manually change the internal resistance values at different levels of other power amplifiers so that
The parameter amplifying signal of all of power amplifier output is consistent.
Specifically, the parameter amplifying signal of power amplifier output includes amplifying the phase between signal code, voltage, signal
Potential difference and the temperature of power amplifier, as in figure 2 it is shown, parameter measurement unit includes oscillograph and phasometer, oscillograph is used for surveying
Measuring electric current and the voltage of multiple amplification signal, oscillograph can be directly connected to the outfan of power amplifier, believes with measuring and amplifying
Number voltage, owing to oscillograph can only measure voltage, can not directly measure electric current, therefore oscillograph passes through a current transformer
It is connected with the outfan of power amplifier, thus can be to measure the electric current of measuring and amplifying signal in the way of voltage；Phasometer is used
In the phase contrast measured between multiple amplification signals, specifically, the two ends of phasometer connect the output of two power amplifiers respectively
End, so that it may measure these two power amplifier outputs and amplify the phase contrast between signal.
Specifically, temperature during power amplifier work is also to affect the key factor of matching degree between power amplifier,
Therefore the parameter measurement unit of the present invention also includes multiple thermodetector, for measuring the temperature of multiple power amplifier respectively.
According to one embodiment of the present invention, power amplifier parallel connection debugging apparatus also includes a power supply, for many
Individual power amplifier is powered, as it is shown on figure 3, power supply includes DC positive power and DC negative supply, wherein, DC positive power is with many
The positive pole of individual power amplifier connects, and DC negative supply is connected with the negative pole of multiple power amplifiers.
According to one embodiment of the present invention, the signal output part of multiple power amplifiers is also by a carrying ground.
The present invention also provides for a kind of power amplifier parallel connection adjustment method, for carrying out multiple power amplifiers in parallel
Debugging, it is characterised in that method includes:
S1, provides to multiple power amplifiers respectively by same input signal, and wherein, multiple power amplifiers are to this signal
It is amplified, and exports multiple amplification signal；
S2, measures the parameter of multiple amplification signals, obtains measurement result, and this measurement result is for power amplification
Device is debugged, so that the parameter amplifying signal of multiple power amplifier output is consistent.
According to one embodiment of the present invention, step S2 includes:
S21, measures electric current and the voltage of multiple amplification signal；
S22, measures the phase contrast between multiple amplification signal.
According to one embodiment of the present invention, step S2 also includes:
S23, measures the temperature of multiple power amplifier respectively.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
Fig. 4 is the power amplifier parallel connection debugging apparatus schematic diagram that the embodiment of the present invention provides, as shown in Figure 4, this enforcement
The rating of set amplifier in parallel debugging apparatus of example is for debugging two power amplifiers in parallel, and device mainly includes
Signal generator, general four line oscillographs, two current transformers, phasometer, two thermometeies, DC positive power and direct current are born
Power supply.The outfan of signal generator connects the signal input part of two power amplifiers, the letter of each power amplifier respectively
Number outfan divides two-way to be connected with the general four oscillographic signal input parts of line, and a road is directly connected with general four line oscillographs,
Another road is connected with general four line oscillographs through current transformer, it addition, the signal output part of two power amplifiers passes through
One carrying ground, phasometer connects the signal output part of two power amplifiers, thermometer and corresponding power amplifier respectively
Connecting, DC positive power is connected with the positive pole of each power amplifier, and DC negative supply connects with the negative pole of each power amplifier
Connect.
The excitation source signal that signal generator produces, enters two power amplifiers, and two power amplifiers are respectively to this
Signal is amplified, and the amplification signal voltage input oscillograph monitoring of power amplifier output, the electric current in circuit passes through simultaneously
Transformer is converted to voltage and also inputs oscillograph.Utilize two amplifier output voltages of four line oscilloscope measurements consistent with electric current
Property.Phasometer is utilized to measure the phase contrast of two paths of signals, precision measuring phase position synchronicity.DC source is that power amplifier supplies
Electricity, and output electric current and voltage, the device temperature of thermometer measure power amplifier module can be monitored.By above-mentioned annexation, can
Know that the output of power amplification unit can be expressed as with the functional relationship of its influence factor:
Po=f (Vo, Io, f, T, φ, U+, U-, I+, I-)
Wherein:
The output voltage of Vo power amplification unit；
The output electric current of Io power amplification unit；
The frequency of f signal generator output signal；
The temperature of T power amplifying device.
Angle between φ two power amplification unit output voltage；
The DC voltage of U+, U-power amplification unit positive-negative power；
The DC current of I+, I-power amplification unit positive-negative power；
From functional relationship, assembly of the invention can be to running parameter (frequency f, temperature T, the voltage U of power amplifier
+/U-and electric current I+/I-) it is monitored, and measure the voltage Vo of output signal, electric current Io and phase difference simultaneously, thus can obtain
To two power amplifiers to the amplitude amplification coefficient of same signal and phase shift, thus realize amplifying unit consistency detection.?
On the basis of completing above-mentioned detection, on the basis of a power amplifier, manually change the internal resistances at different levels of other power amplifiers
Value so that the parameter amplifying signal of all of power amplifier output is consistent, completes debugging in parallel.
Particular embodiments described above, has been carried out the purpose of the present invention, technical scheme and beneficial effect the most in detail
Describe in detail bright, be it should be understood that the specific embodiment that the foregoing is only the present invention, be not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (10)
1. a power amplifier parallel connection debugging apparatus, for multiple power amplifiers debugging in parallel, it is characterised in that dress
Put and include:
Signal generating unit, it is connected with the signal input part of the plurality of power amplifier, for same input signal being divided
Being supplied to the plurality of power amplifier indescribably, wherein, this signal is amplified by the plurality of power amplifier, and exports multiple
Amplify signal；
Parameter measurement unit, it is connected with the signal output part of the plurality of power amplifier, for amplifying letter to the plurality of
Number parameter measure, obtain measurement result, this measurement result is for debugging power amplifier, so that the plurality of
The parameter amplifying signal of power amplifier output is consistent.
Power amplifier parallel connection debugging apparatus the most according to claim 1, it is characterised in that described parameter measurement unit bag
Include:
Oscillograph, for measuring electric current and the voltage of the plurality of amplification signal；
Phasometer, for measuring the phase contrast between the plurality of amplification signal.
Power amplifier parallel connection debugging apparatus the most according to claim 2, it is characterised in that described oscillograph and described merit
The outfan of rate amplifier is directly connected to, and to measure the voltage of described amplification signal, meanwhile, described oscillograph is mutual by an electric current
Sensor is connected with the outfan of described power amplifier, to measure the electric current of described amplification signal.
Power amplifier parallel connection debugging apparatus the most according to claim 2, it is characterised in that described parameter measurement unit is also
Including:
Thermodetector, for measuring the temperature of the plurality of power amplifier respectively.
Power amplifier parallel connection debugging apparatus the most according to claim 1, it is characterised in that also include a power supply, be used for
Power to the plurality of power amplifier.
Power amplifier parallel connection debugging apparatus the most according to claim 5, it is characterised in that described power supply includes that direct current is just
Power supply and DC negative supply, wherein, DC positive power is connected with the positive pole of the plurality of power amplifier, DC negative supply and institute
The negative pole stating multiple power amplifier connects.
Power amplifier parallel connection debugging apparatus the most according to claim 1, it is characterised in that the plurality of power amplifier
Signal output part also by a carrying ground.
8. a power amplifier parallel connection adjustment method, for debugging multiple power amplifiers in parallel, its feature exists
In, method includes:
S1, provides to the plurality of power amplifier respectively by same input signal, and wherein, the plurality of power amplifier is to this
Signal is amplified, and exports multiple amplification signal；
S2, measures the parameter of the plurality of amplification signal, obtains measurement result, and this measurement result is for power amplification
Device is debugged, so that the parameter amplifying signal of the plurality of power amplifier output is consistent.
Power amplifier parallel connection adjustment method the most according to claim 8, it is characterised in that described step S2 includes:
S21, measures electric current and the voltage of the plurality of amplification signal；
S22, measures the phase contrast between the plurality of amplification signal.
Power amplifier parallel connection adjustment method the most according to claim 8, it is characterised in that described step S2 also includes:
S23, measures the temperature of the plurality of power amplifier respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701338.9A CN106124968A (en) | 2016-08-22 | 2016-08-22 | A kind of power amplifier parallel connection debugging apparatus and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701338.9A CN106124968A (en) | 2016-08-22 | 2016-08-22 | A kind of power amplifier parallel connection debugging apparatus and method |
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| CN201610701338.9A Pending CN106124968A (en) | 2016-08-22 | 2016-08-22 | A kind of power amplifier parallel connection debugging apparatus and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448684A (en) * | 2018-04-25 | 2018-08-24 | 柏壹科技（深圳）有限公司 | A kind of wireless charging transmitter, receiver and wireless charging system |
| CN114264911A (en) * | 2022-03-03 | 2022-04-01 | 成都市克莱微波科技有限公司 | Power amplifier reliability test method and test system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189010A (en) * | 1966-07-29 | 1970-04-22 | Thomson Houston Comp Francaise | Improvements in Transistorised Power Amplifiers |
| JPH1168482A (en) * | 1997-08-25 | 1999-03-09 | Takasago Seisakusho:Kk | Power amplifier |
| US20030174018A1 (en) * | 2002-03-13 | 2003-09-18 | Cooper Stephen Edward | Circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof |
| JP2003318659A (en) * | 2002-04-25 | 2003-11-07 | Hitachi Ltd | High-frequency power amplifier and semiconductor integrated circuit apparatus |
| US6741483B1 (en) * | 1998-09-16 | 2004-05-25 | Harman International Industries, Incorporated | Circulating current sensing device for amplifiers |
| JP2016072876A (en) * | 2014-09-30 | 2016-05-09 | 株式会社Ｊｖｃケンウッド | Power amplifier and power amplification method |
| CN206020612U (en) * | 2016-08-22 | 2017-03-15 | 中国计量科学研究院 | A kind of power amplifier parallel connection debugging apparatus |
-
2016
- 2016-08-22 CN CN201610701338.9A patent/CN106124968A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189010A (en) * | 1966-07-29 | 1970-04-22 | Thomson Houston Comp Francaise | Improvements in Transistorised Power Amplifiers |
| JPH1168482A (en) * | 1997-08-25 | 1999-03-09 | Takasago Seisakusho:Kk | Power amplifier |
| US6741483B1 (en) * | 1998-09-16 | 2004-05-25 | Harman International Industries, Incorporated | Circulating current sensing device for amplifiers |
| US20030174018A1 (en) * | 2002-03-13 | 2003-09-18 | Cooper Stephen Edward | Circuit comprising amplifiers connected in parallel, and a method of reducing the difference in amplitude between output signals from amplifiers thereof |
| JP2003318659A (en) * | 2002-04-25 | 2003-11-07 | Hitachi Ltd | High-frequency power amplifier and semiconductor integrated circuit apparatus |
| JP2016072876A (en) * | 2014-09-30 | 2016-05-09 | 株式会社Ｊｖｃケンウッド | Power amplifier and power amplification method |
| CN206020612U (en) * | 2016-08-22 | 2017-03-15 | 中国计量科学研究院 | A kind of power amplifier parallel connection debugging apparatus |
Non-Patent Citations (1)
| Title |
|---|
| 谢里阳，孙红春，林贵瑜, 西安电子科技大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448684A (en) * | 2018-04-25 | 2018-08-24 | 柏壹科技（深圳）有限公司 | A kind of wireless charging transmitter, receiver and wireless charging system |
| CN114264911A (en) * | 2022-03-03 | 2022-04-01 | 成都市克莱微波科技有限公司 | Power amplifier reliability test method and test system |
| CN114264911B (en) * | 2022-03-03 | 2022-05-20 | 成都市克莱微波科技有限公司 | Power amplifier reliability test method and test system |
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