CN106067769B - A kind of power amplifier circuit - Google Patents
A kind of power amplifier circuit Download PDFInfo
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- CN106067769B CN106067769B CN201610368879.4A CN201610368879A CN106067769B CN 106067769 B CN106067769 B CN 106067769B CN 201610368879 A CN201610368879 A CN 201610368879A CN 106067769 B CN106067769 B CN 106067769B
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- 238000004088 simulation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 5
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
The present invention proposes a kind of power amplifier circuit, including：Electric power management circuit, alarm signal processing circuit, binary channels gain adjusting circuit and interior controlling of amplitude switching circuit；The working condition of the real-time monitor AMP of alarm signal processing circuit；Binary channels gain adjusting circuit realizes analog/digital binary channels gain-adjusted；Interior controlling of amplitude switching circuit, wherein the first double-pole double throw electronic switch and the second double-pole double throw electronic switch are controlled by program control signal, the local of controlling of amplitude switching circuit/programmed state switching in realizing, power amplifier is not when accessing program control signal, by manually controlling double-pole double throw mechanical switch, the switching between fixed ampllitude state and open loop situations in power amplifier is realized；If accessing program control signal, third double-pole double throw electronic switch and the 4th double-pole double throw electronic switch are controlled by program control signal to realize the switching in amplifier between fixed ampllitude state and open loop situations.
Description
Technical field
The present invention relates to microwave regime, more particularly to a kind of power amplifier circuit.
Background technology
Power amplifier circuit is the important component in microwave and millimeter wave power synthetic technique, its index is good
It is bad that conclusive influence has been risen on the performance quality of microwave and millimeter wave power synthetic technique.With radar, communication, electronic countermeasure,
Power amplifier properties also proposed increasingly higher demands, no by the continuous development of the application fields such as navigation and aerospace
Higher power output can be had by requiring nothing more than power amplifier, and require interior fixed ampllitude function, i.e., specifically working
Output power flatness is good in frequency range, furthermore it is required that realizing that power amplifier open loop/interior fixed ampllitude state switches work(
Energy, local/program-controlled compatibility function and alert detecting function etc., so the multi-functional power amplifier circuit of high reliability
Develop also ever more important.
Mainly by power module, power amplifier module and control circuit, this three parts forms microwave and millimeter wave power amplifier,
Wherein power module and power amplifier module were achieving huge achievement so that microwave and millimeter wave work(in recent years as research hotspot
Rate amplifier is constantly strided forward towards hectowatt even kilowatt rank.At the same time, in order to cope with such as radar, communication, electronic countermeasure
Various demands under the different applications field complex environment such as aerospace, also proposed higher to power amplifier circuit
Requirement, the normal work of power module and power amplifier module can be ensured by not requiring nothing more than it, but also should have controlling of amplitude work(
Energy, program-controlled compatibility function, alert detecting function etc., to ensure the safe and reliable operation of whole system.At present both at home and abroad micro-
Research is relatively fewer in terms of the control circuit of wave millimeter-wave power amplifiers, and how the common problem encountered is by controlling electricity
Improve the stability that power amplifier works and reliability and the diversity for realizing its function in road.
Current existing power amplifier circuit functional block diagram is as shown in Figure 1, the control circuit includes mainly power supply
Manage circuit, power display circuit and gain adjusting circuit.Wherein, the DC voltage that electric power management circuit provides power module
It is converted into required bias voltage value, is driving amplifier, power combiner and wind turbine power supply, power display circuit can incite somebody to action
The detecting circuit signal of directional coupler forward direction coupling detection output, which is converted to power signal and is shown in the power of amplifier, to be shown
On panel, gain adjusting circuit is then by the way that the manual Regulate signal of gain-adjusted knob is converted to gain-adjusted signal, in fact
The adjusting of existing power amplifier output power.The advantages of circuit is that principle is simple, it is easy to accomplish, but it has a single function, and is only capable of
The basic requirement for enough meeting power amplifier under simple environment navigates for radar, communication, electronic countermeasure, navigation and aviation
The function of the relative complex application environment such as it, the circuit cannot be satisfied its requirement.
Existing power amplifier circuit principle is simple, has a single function, and disadvantage includes mainly the following：
1. the circuit does not have interior fixed ampllitude function, to which the flatness of amplifier output power can not be improved by circuit,
Therefore the performance that the output power flatness of entire amplifier depends entirely on power amplifier chips is wanted output power flatness
Higher environment is sought, which is no longer applicable in.
2. the circuit do not have programmable function, only support amplifier manual adjusting, not only increase use cost, also without
Method meets higher and higher equipment automatization requirement.
3. the circuit does not have monitoring abnormal state function can not pass through alarm signal once power amplifier breaks down
Number inform user, it is even more impossible to be automatically processed, the stability and reliability of system operation are difficult to be guaranteed.
Invention content
Being suitable for microwave and millimeter wave power amplifier in order to solve the above technical problems, the present invention devises one kind, have
High reliability, multi-functional power amplifier circuit.
The technical proposal of the invention is realized in this way：
A kind of power amplifier circuit, including：Electric power management circuit, alarm signal processing circuit, binary channels gain
Adjust circuit and interior controlling of amplitude switching circuit；
Alarm signal processing circuit is by reading overtemperature alarm signal, air-cooled alarm signal and Mismatch alarm signal come in real time
The working condition of monitor AMP then triggers warning lamp and buzzer circuit once reading abnormality, prompts user power
Amplifier operation abnormal state；
Binary channels gain adjusting circuit realizes analog/digital binary channels gain-adjusted；
Interior controlling of amplitude switching circuit, wherein the first single-pole double throw electronic switch and the second single-pole double throw electronic switch are by journey
Signal control is controlled, realizes that local/programmed state switching of interior controlling of amplitude switching circuit, power amplifier are not accessing program-controlled letter
Number when, be defaulted as local state, at this time by manually controlling double-pole double throw mechanical switch, realize fixed ampllitude state in power amplifier
Switching between open loop situations；If accessing program control signal, double-pole double throw mechanical switch is shielded, and passes through program control signal at this time
Third single-pole double throw electronic switch and the 4th single-pole double throw electronic switch are controlled to realize fixed ampllitude state and open loop shape in amplifier
Switching between state.
Optionally, if not eliminating abnormality within the preset time, alarm signal processing circuit can be increased by controlling
Amplifier gain is adjusted to minimum or direct shutdown by beneficial Regulate signal, to realize self guarantor of amplifier and whole system
Shield.
Optionally, the binary channels gain adjusting circuit, under local state, user is revolved by manual rotation gain-adjusted
Button carrys out the output power of regulation power amplifier, realizes that analog voltage is adjusted；It is switched under programmed state, then shields gain-adjusted
Knob is switched to digital signal shaping modes, and user carries out power amplifier output power by general switching software interface at this time
Remote adjustment.
Optionally, under local state or programmed state, once power amplifier is switched to interior fixed ampllitude state, by orienting
The positive rectified signal that coupler generates can initially enter dual slope logarithmic amplifying circuit and be handled, and then pass sequentially through first
Single-pole double throw electronic switch, third single-pole double throw electronic switch or double-pole double throw mechanical switch, interior fixed ampllitude integral loop, the 4th list
Dpdt double-pole double-throw (DPDT) electronic switch or double-pole double throw mechanical switch and the second single-pole double throw electronic switch, ingoing power modulation circuit, most
The gain-adjusted signal generated afterwards adjusts the flatness of output signal power by controlling the attenuation of voltage-controlled attenuator, to
Realize the interior fixed ampllitude of power amplifier.
The beneficial effects of the invention are as follows：
(1) the power amplifier circuit practical function that the present invention designs is various, and principle is simple, it is easy to accomplish, and energy
Enough effectively improve the stability and reliability of power amplifier work；
(2) the interior controlling of amplitude switching circuit of the circuit design, can be easily by a double-pole double throw mechanical switch
It realizes the switching between fixed ampllitude state and open loop situations in power amplifier, effectively increases the flat of power amplifier output power
Smooth degree；
(3) circuit is mutually compatible with the programmable interface of power amplifier, can conveniently realize the local/remote of amplifier
Handoff functionality is controlled, use cost is reduced, improves the intelligence and automation of equipment；
(4) circuit realizes analog/digital binary channels gain-adjusted function, can not only lead to compared to traditional circuit
The output power for the mode regulation power amplifier for adjusting gain knob manually is crossed, and the number under programmed state may be implemented
Signal gain is adjusted；
(5) circuit has the function of Warning signal monitoring, can monitor the working condition of power amplifier in real time and with police
Show that the form of lamp and buzzer informs user, once power amplifier is abnormal and can realize and automatically process, greatly improves
The self-protection ability of amplifier.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the functional block diagram of Conventional amplifiers control circuit；
Fig. 2 is the power amplifier circuit functional block diagram of the present invention；
Fig. 3 is the interior controlling of amplitude switching circuit functional block diagram of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention devises a kind of novel high reliability multi-function power amplifier control circuit, functional block diagram such as Fig. 2
Shown, which includes mainly electric power management circuit 11, alarm signal processing circuit 12, binary channels increasing
Benefit adjusts circuit 13 and interior controlling of amplitude switching circuit 14.
Wherein, electric power management circuit 11 is universal circuit, mainly completes voltage conversion function, is wind turbine, driving amplifier
Bias voltage is provided with power combiner, is not repeated herein.Below in conjunction with the accompanying drawings, the present invention is to alarm signal processing circuit
12, binary channels gain adjusting circuit 13 and interior controlling of amplitude switching circuit 14 describe in detail.
The functional block diagram of alarm signal processing circuit 12 is as shown in Figure 2, and alarm signal processing circuit 12 was by reading
Warm alarm signal, air-cooled alarm signal and Mismatch alarm signal carry out the working condition of real-time monitor AMP, once it reads different
Normal state, for example, temperature is excessively high, wind turbine stalling, reflection signal it is excessive when, then can trigger warning lamp and buzzer circuit 15, prompt
User power amplifier operation abnormal state, if not eliminating abnormality within the preset time, alarm signal processing circuit 12
Then amplifier gain can be adjusted to minimum or direct shutdown by controlling gain-adjusted signal, to realize amplifier and whole
The self-protection of a system.
By designing Warning signal monitoring circuit in circuit, the various alarms of power amplifier complete machine can be monitored in real time
Signal (such as overtemperature alarm, air-cooled alarm, Mismatch alarm), and warning lamp and buzzer can be triggered according to alarm signal, it prompts to use
Family pays attention to, it may be necessary to which amplifier gain is adjusted to the measures such as minimum or shutdown protection by automatic take, to greatly carry
The high stability and reliability of power amplifier work.
The functional block diagram of binary channels gain adjusting circuit 13 is as shown in Figure 2, which can be compatible with two kinds
Different shaping modes realize analog/digital binary channels gain-adjusted function.Under local state, user can be by manual
Rotation gain adjusting knob carrys out the output power of convenient regulation power amplifier, realizes that analog voltage is adjusted；And once switch
To under programmed state, then can automatic shield gain-adjusted knob, be switched to digital signal shaping modes, user can pass through at this time
General switching software interface carries out remote adjustment to amplifier output power.
Power amplifier analog/digital binary channels gain adjusting circuit can be by adjusting increasing under local state manually
The mode of beneficial adjusting knob adjusts the output power of amplifier, once and under amplifier switches to programmed state, then amplifier increase
The function of beneficial adjusting knob can be shielded, and can realize the adjusting to amplifier output power by programmed digital signal at this time.
The functional block diagram of interior controlling of amplitude switching circuit 14 is as shown in figure 3,122 He of wherein the first single-pole double throw electronic switch
Second single-pole double throw electronic switch 127 is controlled by program control signal, and the local of interior controlling of amplitude switching circuit 14/program-controlled may be implemented
State switching performance, amplifier are defaulted as local state when not accessing program control signal, at this time can be by manually controlling double-pole
Double-throw mechanical switch 125, the convenient switching realized in amplifier between fixed ampllitude state and open loop situations；If accessing program-controlled letter
Number, then double-pole double throw mechanical switch 125 can be shielded, and no longer be worked, and be to control third hilted broadsword pair by program control signal at this time
Electronic switch 123 and the 4th single-pole double throw electronic switch 126 are thrown to realize in amplifier between fixed ampllitude state and open loop situations
Switching.Whether under local state or programmed state, once amplifier switches are produced to interior fixed ampllitude state by directional coupler
Raw positive rectified signal can initially enter dual slope logarithmic amplifying circuit 121 and be handled, and then pass sequentially through the first hilted broadsword
Pole double throw electronic switch 122, third single-pole double throw electronic switch 123 or double-pole double throw mechanical switch 125, interior fixed ampllitude integral loop
124, the 4th single-pole double throw electronic switch 126 or double-pole double throw mechanical switch 125 and the second single-pole double throw electronic switch 127,
Ingoing power modulation circuit 128, the gain-adjusted signal finally generated are defeated to adjust by the attenuation for controlling voltage-controlled attenuator
The flatness for going out signal power, to realize the interior fixed ampllitude function of amplifier.
Controlling of amplitude switching circuit passes through the double-pole double throw mechanical switch and electronics that design in circuit in power amplifier
ON-OFF control circuit can not only realize free switching of the power amplifier between open loop/interior fixed ampllitude state under local state,
And the interior fixed amplitude circuit that power amplifier may be implemented is mutually compatible with complete machine programme control circut, i.e., under complete machine programmed state,
The long-range switching of power amplifier open loop/interior fixed ampllitude state may be implemented.
The power amplifier circuit principle that the present invention designs is simple, it is easy to accomplish, it is vdiverse in function and practical.Wherein,
The output power flatness of power amplifier greatly improved in interior controlling of amplitude switching circuit, and program-controlled compatible circuit makes power put
Big device is provided with remote control function, Warning signal monitoring circuit then realize power amplifier working condition monitoring in real time and
Self-protection function, above functions not only increase the stability and reliability of power amplifier work, also achieve its intelligence
Change and automation control, therefore the circuit has huge application potential and wide application prospect.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (4)
1. a kind of power amplifier circuit, which is characterized in that including：It is electric power management circuit, alarm signal processing circuit, double
Channel gain adjusts circuit and interior controlling of amplitude switching circuit；
Alarm signal processing circuit is monitored in real time by reading overtemperature alarm signal, air-cooled alarm signal and Mismatch alarm signal
The working condition of amplifier then triggers warning lamp and buzzer circuit once reading abnormality, prompts user power amplification
Device working condition is abnormal；
Binary channels gain adjusting circuit realizes analog/digital binary channels gain-adjusted；
Interior controlling of amplitude switching circuit, wherein the first single-pole double throw electronic switch and the second single-pole double throw electronic switch are by program-controlled letter
Number control, realize in controlling of amplitude switching circuit local/programmed state switching, power amplifier do not accessing program control signal
When, be defaulted as local state, at this time by manually controlling double-pole double throw mechanical switch, realize in power amplifier fixed ampllitude state and
Switching between open loop situations；If accessing program control signal, double-pole double throw mechanical switch is shielded, and passes through program control signal control at this time
Third single-pole double throw electronic switch and the 4th single-pole double throw electronic switch processed realize fixed ampllitude state and open loop situations in amplifier
Between switching.
2. power amplifier circuit as described in claim 1, which is characterized in that if not eliminated within the preset time different
Amplifier gain then can be adjusted to minimum or direct pass by normal state, alarm signal processing circuit by controlling gain-adjusted signal
Machine, to realize the self-protection of amplifier and whole system.
3. power amplifier circuit as described in claim 1, which is characterized in that the binary channels gain adjusting circuit,
Under local state, user, come the output power of regulation power amplifier, realizes simulation by manual rotation gain-adjusted knob
Voltage is adjusted；It is switched under programmed state, then shields gain-adjusted knob, be switched to digital signal shaping modes, at this time user
By general switching software interface, remote adjustment is carried out to power amplifier output power.
4. power amplifier circuit as described in claim 1, which is characterized in that in local state or programmed state
Under, once power amplifier is switched to interior fixed ampllitude state, the positive rectified signal generated by directional coupler can initially enter double
Slope logarithmic amplifying circuit is handled, and the first single-pole double throw electronic switch, third single-pole double throw electronic cutting are then passed sequentially through
Close or double-pole double throw mechanical switch, interior fixed ampllitude integral loop, the 4th single-pole double throw electronic switch or double-pole double throw mechanical switch with
And the second single-pole double throw electronic switch, ingoing power modulation circuit, the gain-adjusted signal finally generated is by controlling voltage-controlled decline
Subtract the attenuation of device to adjust the flatness of output signal power, to realize the interior fixed ampllitude of power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610368879.4A CN106067769B (en) | 2016-05-19 | 2016-05-19 | A kind of power amplifier circuit |
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| CN201610368879.4A CN106067769B (en) | 2016-05-19 | 2016-05-19 | A kind of power amplifier circuit |
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| CN106067769B true CN106067769B (en) | 2018-10-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107196617B (en) * | 2017-05-27 | 2021-03-30 | 中国电子科技集团公司第四十一研究所 | Intelligent power amplitude stabilizing loop based on dynamic self-adaptive algorithm and amplitude stabilizing method |
| CN107248848A (en) * | 2017-06-08 | 2017-10-13 | 中国电子科技集团公司第五十四研究所 | A kind of EHF frequency ranges High Linear solid-state high power amplifier device |
| CN108055010A (en) * | 2017-12-07 | 2018-05-18 | 中国电子科技集团公司第四十研究所 | A kind of power amplifier mismatch guard loop of quick dynamic self-adapting and guard method |
| CN112462666B (en) * | 2020-12-01 | 2021-11-02 | 成都沃特塞恩电子技术有限公司 | Split type high power source control system and split type high power source |
| CN114114161A (en) * | 2021-10-20 | 2022-03-01 | 北京无线电测量研究所 | Compact airborne three-band solid-state transmitter and system |
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