CN205566232U - Long -pending electron amplifier device of high -gain bandwidth - Google Patents
Long -pending electron amplifier device of high -gain bandwidth Download PDFInfo
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- CN205566232U CN205566232U CN201620343492.9U CN201620343492U CN205566232U CN 205566232 U CN205566232 U CN 205566232U CN 201620343492 U CN201620343492 U CN 201620343492U CN 205566232 U CN205566232 U CN 205566232U
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Abstract
The utility model discloses a long -pending electron amplifier device of high -gain bandwidth, including having the long -pending high frequency amplifier of high -gain bandwidth, being used for the input to preset the keyboard control circuit of voltage, being used for the regulation and control input high frequency amplifier's voltage signal's field programmable gate array circuit and power supply circuit, field programmable gate array circuit and power supply circuit respectively with high frequency amplifier connects, keyboard control circuit with field programmable gate array circuit connection. Adopt long -pending electron amplifier device of high -gain bandwidth, have the characteristics of low noise, low distortion degree, broadband and continuously adjustable frequency.
Description
Technical field
This utility model relates to electronic amplifier art, particularly relates to the electronic amplifier device that a kind of high gain-bandwidth is long-pending.
Background technology
Owing to the update with technology that develops rapidly of the communication science and technology such as mobile communication, DTV, fiber-optic transfer makes to amplify
Device role in current sciemtifec and technical sphere is more and more important.Signal amplifier is the most active at communication era, person to person it
Between exchange become increasingly dependent on epoch of network, the low noise of short-sighted frequency and voice signal is processed and high multiple (high-gain) by people
Amplify the most increasingly high request.
In the technique of high-gain and high broadband and low noise, amplifier traditionally is typically all very difficult three and meets together,
Because gain bandwidth product is a constant under certain hardware condition, gain is too high, and corresponding bandwidth is bound in theory
Corresponding shortening.The development especially of the broadband on pursuit higher frequency band on this basis and larger range of gain control
Trend.
On the basis of ensureing high-gain, high band, amplify signal and be typically not easy to have low distortion and bigger broadband, special
Not being too high at frequency input signal and amplitude is too small, the noise amplifying signal of output can be bigger and be attended by a certain degree of
Distortion.
Utility model content
In order to overcome above-mentioned technological deficiency, this utility model provides the electronic amplifier device that a kind of high gain-bandwidth is long-pending, has low
Noise, low distortion, broadband and the feature of continuously adjustable high-gain.
In order to solve the problems referred to above, this utility model is achieved by techniques below scheme:
The electronic amplifier device that high gain-bandwidth described in the utility model is long-pending, the High frequency amplification long-pending including having high gain-bandwidth
Device, for input preset voltage keyboard control circuit, for regulate and control to input the scene of voltage signal of described high frequency amplifier can
Programming gate-array circuit and power circuit；Described field programmable gate array and power circuit respectively with described high frequency amplifier
Connect；Described keyboard control circuit is connected with described field programmable gate array.
Further, described high frequency amplifier includes the broadband amplification module of low noise fixed gain, the first impedance being sequentially connected with
Matching network circuit, the broadband amplification module of linear voltage controlled gain, the second impedance matching network and radio frequency power amplification module；
Described high frequency amplifier also include respectively with the broadband amplification module of low noise fixed gain, the first impedance matching network circuit,
The voltage conversion supply that the linear broadband amplification module of voltage controlled gain, the second impedance matching network and radio frequency power amplification module connect
Module, for providing the voltage of adaptation to the above each module；
The amplitude of the high frequency small-signal that outside is inputted by the broadband amplification module of described low noise fixed gain carries out preset times magnification
The amplification of number, and suppress low-frequency noise and high frequency spurs, the signal after this process is through described first impedance matching network circuit
Through impedance matching transition, the broadband amplification module being transported to described linear voltage controlled gain carries out gain amplification, described in being delivered to
Second impedance matching network again passes by impedance matching transition, is transported to described radio frequency power amplification module and carries out expanding stream process raising
The amplitude of the electric current of signal, obtains the signal that high gain-bandwidth is long-pending.
Further, described high frequency amplifier front end and end have been each provided the 3rd impedance matching network circuit, are used for ensureing input
High frequency amplifier and from high frequency amplifier output signal undistorted.
Further, in described power circuit, it is additionally provided with filter circuit, for the noise avoiding power circuit self to cause.
Further, described field programmable gate array is also associated with liquid crystal display circuit, for displaying scene programmable gate
The multiple of the preset voltage of array circuit regulation and control and the concrete waveform of signal.
Further, in described field programmable gate array, it is additionally provided with D/A converting circuit, for keyboard control circuit is defeated
The digital controlled signal gone out is converted to the voltage signal of simulation, and the broadband amplification module being input to described linear voltage controlled gain carries out electricity
The amplification of pressure signal.
Further, being additionally provided with analog to digital conversion circuit in described field programmable gate array, being used for will be through described linear pressure
The analog voltage signal that the broadband amplification module of control gain amplifies is converted to digital voltage signal, in order to described keyboard control circuit
Preset multiple compares.
Further, described first impedance matching network circuit, the second impedance matching network circuit and the 3rd impedance matching network electricity
Road includes resistance and the circuit of electric capacity composition.
Further, described first impedance matching network circuit, the second impedance matching network circuit and the 3rd impedance matching network electricity
Road is T-shaped lattice network or pin network circuit.
Compared with prior art, the beneficial effects of the utility model are:
The electronic amplifier device that high gain-bandwidth described in the utility model is long-pending, has, by selection, the high frequency that high gain-bandwidth is long-pending
Amplifier, thus on the premise of meeting high-gain, broadband, then by the input control of described field programmable gate array
Voltage signal processed is to described high frequency amplifier, and after described control voltage signal is amplified by described high frequency amplifier, output is to described existing
Field programmable gate array circuit, through conversing amplification after the voltage signal after the reception amplification of described field programmable gate array
Multiple, the multiple multiple preset with described keyboard control circuit reality amplified compares, until the multiple of actual amplification
In the range of error that preset multiple is allowed, it is achieved the balance of high-gain, low noise and low distortion.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail, wherein:
Fig. 1 is the circuit block diagram of the high frequency amplifier device that the described high gain-bandwidth that this utility model embodiment provides is amassed；
Fig. 2 is the circuit block of the high frequency amplifier in the high frequency amplifier device that the described high gain-bandwidth that this utility model embodiment provides is amassed
Figure；
Fig. 3 is first, second or the 3rd in the high frequency amplifier device that the described high gain-bandwidth that this utility model embodiment provides is amassed
The basic pin network circuit diagram of impedance matching network circuit.
In figure:
1: high frequency amplifier
11: broadband amplification module 12: the first impedance matching network circuit of low noise fixed gain
13: bandwidth amplification module 14: the second impedance matching network circuit of linear voltage controlled gain
15: radio frequency power amplification module 16: voltage conversion supply module
2: field programmable gate array
21: D/A converting circuit 22: analog to digital conversion circuit
3: keyboard control circuit
4: power circuit
41: filter circuit
5: the three impedance matching network circuit 6: liquid crystal display circuit
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that described herein be preferable to carry out
Example is merely to illustrate and explains this utility model, is not used to limit this utility model.
As it is shown in figure 1, the electronic amplifier device that high gain-bandwidth described in the utility model is long-pending, include high frequency amplifier 1,
Field programmable gate array 2, keyboard control circuit 3 and power circuit 4；Described field programmable gate array 2 and electricity
Source circuit 4 is connected with described high frequency amplifier 1 respectively.
Wherein, described power circuit is used for providing described high frequency amplifier 1, field programmable gate array 2 and Keyboard Control
The power source of circuit 3；Described high frequency amplifier 1 coordinates field programmable gate array 2 and keyboard control circuit 3 complete
The balance of one-tenth, high-gain, low noise and low distortion.
The input of described field programmable gate array 2 controls voltage signal to described high frequency amplifier 1, described high frequency amplifier 1
After described control voltage signal is amplified, output to described field programmable gate array 2, described field programmable gate array
After circuit 2 receives the voltage signal after amplifying, through conversing the multiple of amplification, the multiple that reality is amplified and described keyboard control
The preset multiple of circuit 3 processed compares, until the actual multiple amplified is in the range of error that preset multiple is allowed, from
And realize balance.
Described field programmable gate array 2 is a kind of semi-custom circuit in special IC field, at this utility model
In, described field programmable gate array 2 is provided with a D/A converting circuit 21, is used for realizing digital-to-analogue conversion, by keyboard
The concrete digital controlled signal of control circuit 3 transmission is converted to the voltage signal of simulation, and transmits to described high frequency amplifier 1
The voltage signal of this simulation is amplified, to realize signal amplification；Described field programmable gate array 2 is additionally provided with patten transformation simultaneously
Circuit 22, in order to realize gathering the voltage signal through amplification of high frequency amplifier 1 output, and will by analog to digital conversion circuit
The voltage signal of simulation is converted to digital signal, and obtains the multiple of the actual amplification of correspondence through scale operation, then and it
The preset times of front keyboard control circuit 3 compares, and obtains a difference, if changing difference in default error allowed band
In, then keep the voltage signal values of digital-to-analogue conversion end, the most constantly feedback vernier control voltage signal values, until it reaches error permits
The scope permitted, the most finally realizes the purpose of high-gain, low noise and low distortion.
As in figure 2 it is shown, described high frequency amplifier 1 includes bandwidth amplification module 11, first impedance matching of low noise fixed gain
Lattice network 12, broadband amplification module 13, the second impedance matching network circuit 14 of linear voltage controlled gain, radio-frequency power amplify
Module 15 and voltage conversion supply module 16, bandwidth amplification module 11, the first impedance matching net of described low noise fixed gain
Network circuit 12, broadband amplification module 13, the second impedance matching network circuit 14 of linear voltage controlled gain and radio-frequency power amplify mould
Block 15 is sequentially connected with, and described voltage conversion supply module 16 is connected with above each module respectively, is power supply and filter circuit
The purer voltage that conversion comes, after blood pressure lowering, rectification, voltage stabilizing, corresponding different voltage stabilizing chips, the different burning voltage of output
As the working power of each circuit in above each module.
The high frequency small-signal of the outside input of its reception of the broadband amplification module 11 of described low noise fixed gain, by little for described high frequency letter
Number amplitude carry out preset amplification and be amplified, suppress most low-frequency noise and high frequency spurs simultaneously.Described low noise
The broadband amplification module 11 of fixed gain is with chip opa847 as primary module, and peripheral circuit is with the voltage feedback type circuit of amplifier
For with reference to building, using single-chip integration, described low noise wideband amplification chip OPA847 has 3.9GHz, 0.85nV/Hz's
Low noise, bandwidth of operation, at the frequency band of 0-600MHz, so can ensure that on the basis of bandwidth is sufficiently large, can effectively suppress to make an uproar
Sound, it is ensured that the noise of output is minimized as far as possible, it is ensured that the degree of purity of waveform, circuit is built simply simultaneously, and debugging is convenient.Its
Front end as high frequency amplifier, it is possible to effectively ensure the excellent performance of late-class circuit.
Described first impedance matching network circuit 12 ensures the broadband amplification module 11 of low noise fixed gain and existing voltage controlled gain
Broadband amplification module between coupling；Described second impedance matching network circuit 14 ensures that mould is amplified in the broadband of existing voltage controlled gain
Mating between block 13 with radio frequency power amplification module 15.
The broadband amplification module 13 of described linear voltage controlled gain receives the height of the broadband amplification module 11 from low noise fixed gain
Frequently signal, it is achieved by signal under the conditions of certain broadband, further can be amplified to certain with continuous control gain by gain
Multiple.The broadband amplification module 13 of described linear voltage controlled gain uses 500M bandwidth ,-2.5-42.5dB gain-adjusted scope
Amplifier AD8367 build controllable gain amplifying circuit, chip periphery circuit uses the Voltage Feedback connected mode of amplifier, amplifies
Gain with control the linear relation of voltage, control planning is high, excellent in stability, controls voltage by field programmable gate array electricity
Road 2 controls D/A converting circuit 21 and produces, and its gain control accuracy depends on the figure place of D/A converting circuit 21, can realize increasing
The continuously adjustabe of benefit, amplifier AD8367 can realize that frequency band is wider and gain-adjusted can get the times magnification of 60dB (1000 times)
Number.
Described radio frequency power amplification module 15 receives the high-frequency signal of the broadband amplification module 13 from linear voltage controlled gain, utilizes
The mode expanding stream improves the electric current of signal, in the case of the voltage that signal voltage amplitude reaches higher after the amplification of front two-stage,
While improving power by the amplitude of motor current, it is ensured that signal has higher bandwidth, thus ensures that signal is through too high
The signal that high gain-bandwidth is long-pending can be produced after audio amplifier 1.In view of radio frequency power amplification module 15 as afterbody circuit,
Voltage now increases to several volts from original several millivolts, adds 1000 times, and the frequency of synchronous signal is up to
300MHz high frequency, in order to realize the undistorted of signal, the radio-frequency power that we use integrated chip RF2317 to be main composition amplifies
Module, this chip can be operated under the frequency that operating frequency is up to 3.0GHz, and output voltage can meet system significantly to be wanted
Ask, finally can export the high-frequency signal of high-gain, low distortion, low noise, and there is the broadband of 30MHz～300MHz.
Simultaneously, in order to promote, the described high frequency amplifier 1 signal during accessing signal and output signal is undistorted asks
Topic, respectively arranges one the 3rd impedance matching network circuit 5 in described high frequency amplifier 1 front end and end.Described 3rd impedance matching
Lattice network 5 be in order to realize signal between different circuit modules when of transition undistorted, and ensure the biography of peak power
Defeated, in ensureing signal passband, there is good flatness.It is positioned at the 3rd impedance matching network electricity of high frequency amplifier 1 front end
Road 5 is in order to mate with the signal source of input, it is ensured that input signal undistorted；It is positioned at described the of high frequency amplifier end
Three impedance matching network circuit 5 ensure to mate with oscillographic so that the waveform of output is undistorted.
There is provided the process of power source total in order to improve described power circuit 4 to high frequency amplifier 1, it is to avoid power circuit was powered
The noise that in journey, self produces, is provided with filter circuit in described power circuit 4.Described power circuit 4 powers to whole device
, after reducing transformer, rectification, voltage stabilizing, transmit voltage to each circuit.Power end uses filter circuit between circuit end,
Described filter circuit uses low frequency capacitive and the mode of high frequency capacitance earth, it is achieved filter the noise inside power supply and clutter,
Avoid introducing noise from power end signal amplification has been affected.
The stability of the electronic amplifier device that described high gain-bandwidth is long-pending depends on that the phase margin of device, i.e. amplifier open-loop increase
Benefit is the difference of phase place during 0dB and 180 degree.Owing to signal is by producing additional phase shift during amplifier and feedback circuit,
Produce self-excitation.In the design of this device, feedback is amplifier single electrode voltage feedback, it is noted that the additional phase that every grade of amplifier self produces
Move be respectively less than 180 degree, on partial feedback resistance can parallel feedback electric capacity, composition leading phase compensation reduce input stray capacitance
Impact, by PCB reasonable line arrangement, the phase shift making feedback circuit produce is minimum.π is built between power supply and the ground of each chip
Or T-shaped network filtering, use impedance matching between level and level, be used for suppressing noise.
Relative to prior art, the electronic amplifier device that high gain-bandwidth of the present utility model is amassed is main by utilizing integrated chip
Building and have the control gain wideband width amplifier module that high-gain broadband is long-pending, collocation filter network, impedance matching network realize suppression
Noise function, field programmable gate array 2 realizes the function of digitally-controlled amplifier gain；This utility model is with hardware
Circuit realiration, departing from the dependence to computer, has and responds the advantages such as timely.
The above, be only preferred embodiment of the present utility model, and this utility model is not made any pro forma restriction,
Therefore it is every without departing from technical solutions of the utility model content, according to appointing that above example is made by technical spirit of the present utility model
What amendment, equivalent variations and modification, all still fall within the range of technical solutions of the utility model.
Claims (9)
1. the electronic amplifier device that a high gain-bandwidth is long-pending, it is characterised in that:
Including there is the long-pending high frequency amplifier of high gain-bandwidth, for inputting the keyboard control circuit of preset voltage, defeated for regulating and controlling
Enter field programmable gate array and the power circuit of the voltage signal of described high frequency amplifier；
Described field programmable gate array and power circuit are connected with described high frequency amplifier respectively；
Described keyboard control circuit is connected with described field programmable gate array.
The electronic amplifier device that high gain-bandwidth the most according to claim 1 is long-pending, it is characterised in that:
Described high frequency amplifier includes the broadband amplification module of low noise fixed gain, the first impedance matching network electricity being sequentially connected with
Road, the broadband amplification module of linear voltage controlled gain, the second impedance matching network and radio frequency power amplification module；
Described high frequency amplifier also include respectively with the broadband amplification module of low noise fixed gain, the first impedance matching network circuit,
The voltage conversion supply that the linear broadband amplification module of voltage controlled gain, the second impedance matching network and radio frequency power amplification module connect
Module, for providing the voltage of adaptation to the above each module；
The amplitude of the high frequency small-signal that outside is inputted by the broadband amplification module of described low noise fixed gain carries out preset times magnification
The amplification of number, and suppress low-frequency noise and high frequency spurs, the signal after this process is through described first impedance matching network circuit
Through impedance matching transition, the broadband amplification module being transported to described linear voltage controlled gain carries out gain amplification, described in being delivered to
Second impedance matching network again passes by impedance matching transition, is transported to described radio frequency power amplification module and carries out expanding stream process raising
The amplitude of the electric current of signal, obtains the signal that high gain-bandwidth is long-pending.
The electronic amplifier device that high gain-bandwidth the most according to claim 2 is long-pending, it is characterised in that:
Described high frequency amplifier front end and end have been each provided the 3rd impedance matching network circuit, are used for ensureing to input high frequency amplifier
Undistorted with the signal exported from high frequency amplifier.
The electronic amplifier device that high gain-bandwidth the most according to claim 1 is long-pending, it is characterised in that:
It is additionally provided with filter circuit, for the noise avoiding power circuit self to cause in described power circuit.
The electronic amplifier device that high gain-bandwidth the most according to claim 1 is long-pending, it is characterised in that:
Described field programmable gate array is also associated with liquid crystal display circuit, adjusts for displaying scene programmable gate array circuit
The multiple of the preset voltage of control and the concrete waveform of signal.
The electronic amplifier device that high gain-bandwidth the most according to claim 2 is long-pending, it is characterised in that:
It is additionally provided with D/A converting circuit, for the numeral control exported by keyboard control circuit in described field programmable gate array
Signal processed is converted to the voltage signal of simulation, and the broadband amplification module being input to described linear voltage controlled gain carries out putting of voltage signal
Greatly.
The electronic amplifier device that high gain-bandwidth the most according to claim 2 is long-pending, it is characterised in that:
It is additionally provided with analog to digital conversion circuit, for by the width through described linear voltage controlled gain in described field programmable gate array
The analog voltage signal amplified with amplification module is converted to digital voltage signal, in order to the multiple preset with described keyboard control circuit
Compare.
The electronic amplifier device that high gain-bandwidth the most according to claim 3 is long-pending, it is characterised in that:
Described first impedance matching network circuit, the second impedance matching network circuit and the 3rd impedance matching network circuit include resistance
Circuit with electric capacity composition.
The electronic amplifier device that high gain-bandwidth the most according to claim 8 is long-pending, it is characterised in that:
Described first impedance matching network circuit, the second impedance matching network circuit and the 3rd impedance matching network circuit are T-shaped nets
Network circuit or pin network circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343492.9U CN205566232U (en) | 2016-04-21 | 2016-04-21 | Long -pending electron amplifier device of high -gain bandwidth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620343492.9U CN205566232U (en) | 2016-04-21 | 2016-04-21 | Long -pending electron amplifier device of high -gain bandwidth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566232U true CN205566232U (en) | 2016-09-07 |
Family
ID=56806966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620343492.9U Expired - Fee Related CN205566232U (en) | 2016-04-21 | 2016-04-21 | Long -pending electron amplifier device of high -gain bandwidth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205566232U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946684A (en) * | 2019-03-08 | 2019-06-28 | 哈尔滨工程大学 | A kind of broadband sonar transmitter having big out-put dynamic range |
-
2016
- 2016-04-21 CN CN201620343492.9U patent/CN205566232U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946684A (en) * | 2019-03-08 | 2019-06-28 | 哈尔滨工程大学 | A kind of broadband sonar transmitter having big out-put dynamic range |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20170421 |