CN205725665U - A kind of RF broadband amplifier of gain controllable - Google Patents
A kind of RF broadband amplifier of gain controllable Download PDFInfo
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- CN205725665U CN205725665U CN201620347467.8U CN201620347467U CN205725665U CN 205725665 U CN205725665 U CN 205725665U CN 201620347467 U CN201620347467 U CN 201620347467U CN 205725665 U CN205725665 U CN 205725665U
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- 230000003321 amplification Effects 0.000 claims abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000368 destabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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Abstract
The utility model discloses the RF broadband amplifier of a kind of gain controllable, comprising: amplification module, filtration module, power module and gain control module；The preamplifying circuit of amplification module uses AG402 chip, middle rank amplifying circuit and rear class amplifying circuit to use AG604 chip；Gain control module includes programmable attenuator and collecting unit, programmable attenuator input connects single-chip microcomputer and keyboard and by described single-chip microcomputer and keyboard co-controlling multiplication factor, and the input that collecting unit is connected to single-chip microcomputer sends to single-chip microcomputer with the data gathering self；Filtration module uses Butterworth filter.There is again while amplification in broadband low noise feature, pass through Single-chip Controlling, compare with the set threshold values that obtains, control multiplication factor, maintain stablizing of output, ensure that in 50MHz～160MHz gain fluctuation is not more than 2db, while overall anti-interference is greatly improved and its gain size can be manually changed by button.
Description
Technical field
The utility model belongs to the technical field of high-frequency amplifier, particularly relates to the radio frequency width of a kind of gain controllable
Band amplifier.
Background technology
Radio frequency amplifier is in the systems such as radar, radio communication, navigation, satellite communication, countermeasures set
Have a wide range of applications, be the key equipment of Modern wireless communication.
In gain controllable radio frequency amplifier, amplifier section generally uses OPA695 chip, because OPA695
Have enough gain bandwidth products, but noise ratio is relatively big, may be bigger on rear class impact.Gain section makes
Carry out anti-phase decay with operational amplifier, with the amplification principle of amplifier, by changing feedback resistance and input electricity
The ratio of resistance reaches the purpose of decay, but amplifier has very big destabilizing factor, and one is that input signal is
High frequency small-signal, common amplifier can not well amplify such signal, and two is the very easy distortion of amplifier,
Uncontrollable shortcoming is that experiment adds destabilizing factor.Filtering part generally can select Chebyshev to filter
Device or Bessel filter or elliptic filter, but their monotonicities are not fine and passband fluctuation is bigger.
Sum it up, the anti-interference of current portion radio frequency amplifier and controllability have much room for improvement.
Content of the invention
In view of this, the purpose of this utility model is to propose the RF broadband amplifier of a kind of gain controllable, with
Solve current radio frequency amplifier anti-interference and the low technical problem of controllability.In order to the embodiment disclosing
Some aspects have a basic understanding, shown below is simple summary.This summarized section is not to comment general
State, be not key/critical component to be determined or the protection domain describing these embodiments.It is unique
Purpose is to present some concepts by simple form, in this, as the preamble of following detailed description.
The technical scheme that the utility model is used is as follows:
In some optional embodiments, provide the RF broadband amplifier of a kind of gain controllable, comprising: put
Big module, filtration module, power module, and the increasing for controlling gain being connected with described amplification module
Benefit control module；Preamplifying circuit that described amplification module includes being sequentially connected with, middle rank amplifying circuit and after
Level amplifying circuit, preamplifying circuit uses AG402 chip, and middle rank amplifying circuit and rear class amplifying circuit are adopted
Use AG604 chip；Described gain control module includes programmable attenuator and collecting unit, described program control decay
Device uses HMC470 chip, and described collecting unit is connected to the output of described programmable attenuator, described journey
Controlling attenuation device input connects single-chip microcomputer and keyboard and by described single-chip microcomputer and keyboard co-controlling multiplication factor,
The input that described collecting unit is connected to described single-chip microcomputer sends to described monolithic with the data gathering self
Machine；Described filtration module uses Butterworth filter.
In some optional embodiments, described collecting unit uses AD8307 chip.
In some optional embodiments, described single-chip microcomputer uses STM32 chip.
In some optional embodiments, described power module is described amplification module, described gain control molding
Block and described filtration module are powered, the power supply adaptor that described power module uses model to be PSA15R-120P,
220V is converted to the operating voltage of 12V.
In some optional embodiments, described single-chip microcomputer output is also connected with liquid crystal display.
Beneficial effect: have again low noise feature in broadband while amplification, by Single-chip Controlling, with institute
Arrange threshold values compares, control multiplication factor, maintain output stablize, it is ensured that at 50MHz～160MHz
Interior gain fluctuation is not more than 2db, while overall anti-interference is greatly improved and can be manual by button
Change its gain size.
Brief description
Fig. 1 is the structural representation of the RF broadband amplifier of a kind of gain controllable of the utility model.
Detailed description of the invention
The following description and drawings illustrate specific embodiments of the present invention fully, so that those skilled in the art
Member can put into practice them.Other embodiments can include structure, logic, electric, process with
And other change.Embodiment only represents possible change.Unless explicitly requested, otherwise single parts and
Function is optional, and the order operating can change.The part of some embodiments and feature can be by
Including or replace part and the feature of other embodiments.
As it is shown in figure 1, in some illustrative embodiments, provide the rf broadband of a kind of gain controllable to put
Big device, comprising: amplification module the 1st, filtration module the 2nd, power module 3 and gain control module 4, gain control
Molding block 4 is connected with amplification module 1, is used for controlling gain.
Amplification module 1 includes preamplifying circuit, middle rank amplifying circuit and the rear class amplifying circuit being sequentially connected with,
Preamplifying circuit uses AG402 chip, has again low noise in broadband special while AG402 chip amplifies
Point, middle rank amplifying circuit and rear class amplifying circuit use AG604 chip, AG604 chip input and output impedance
It is 50 Ω, so that impedance matching reaches requirement.
Filtration module 2 uses Butterworth filter, and Butterworth filter is 7 rank bandwidth-limited circuits,
There is the advantage that monotonicity is good and passband fluctuation is little.
Gain control module 4 includes programmable attenuator 41 and collecting unit 42, in some illustrative embodiments
In, collecting unit 42 uses AD8307 chip.Programmable attenuator 41 uses HMC470 chip, program control
Attenuator 41 input connects single-chip microcomputer 5 and keyboard 6, controls gain accurately, and programmable attenuator 41 is by institute
State single-chip microcomputer 5 and keyboard 6 co-controlling multiplication factor.Collecting unit 42 is connected to programmable attenuator 41
Output, the data self gathering are sent extremely described single-chip microcomputer 5 and are controlled by collecting unit 42, at some
In illustrative embodiment, single-chip microcomputer uses STM32 chip, is controlled by single-chip microcomputer 5, obtains with desired level
Threshold values compares, and controls multiplication factor, maintains stablizing of output, it is ensured that in 50MHz～160MHz
Gain fluctuation is not more than 2db.
In some illustrative embodiments, power module 3 is amplification module the 1st, gain control module 4 and filter
Mode block 2 is powered, and the power supply adaptor that power module 3 uses model to be PSA15R-120P, by 220V
Be converted to the operating voltage of 12V.
In some illustrative embodiments, single-chip microcomputer 5 output is also connected with liquid crystal display 7, shows.
Above-described embodiment is the utility model preferably embodiment, but embodiment of the present utility model is not
Being restricted to the described embodiments, other are any without departing from being done under Spirit Essence of the present utility model and principle
Change, modify, substitute, combination, simplify, all should be the substitute mode of equivalence, all should be included in this practicality
In novel protection domain.
Claims (5)
1. the RF broadband amplifier of a gain controllable, it is characterised in that include: amplification module, filter
Mode block, power module, and the gain control molding for controlling gain being connected with described amplification module
Block；Described amplification module includes that the preamplifying circuit being sequentially connected with, middle rank amplifying circuit and rear class are amplified
Circuit, preamplifying circuit uses AG402 chip, middle rank amplifying circuit and rear class amplifying circuit to use
AG604 chip；Described gain control module includes programmable attenuator and collecting unit, described program control decay
Device uses HMC470 chip, and described collecting unit is connected to the output of described programmable attenuator, described
Programmable attenuator input connects single-chip microcomputer and keyboard and by described single-chip microcomputer and keyboard co-controlling times magnification
Number, the input that described collecting unit is connected to described single-chip microcomputer sends to institute with the data gathering self
State single-chip microcomputer；Described filtration module uses Butterworth filter.
2. the RF broadband amplifier of a kind of gain controllable according to claim 1, it is characterised in that
Described collecting unit uses AD8307 chip.
3. the RF broadband amplifier of a kind of gain controllable according to claim 1, it is characterised in that
Described single-chip microcomputer uses STM32 chip.
4. the RF broadband amplifier of a kind of gain controllable according to claim 1, it is characterised in that
Described power module is that described amplification module, described gain control module and described filtration module are powered, institute
State the power supply adaptor that power module uses model to be PSA15R-120P, 220V is converted to the work of 12V
Make voltage.
5. the RF broadband amplifier of a kind of gain controllable according to claim 1, it is characterised in that
Described single-chip microcomputer output is also connected with liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347467.8U CN205725665U (en) | 2016-04-22 | 2016-04-22 | A kind of RF broadband amplifier of gain controllable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347467.8U CN205725665U (en) | 2016-04-22 | 2016-04-22 | A kind of RF broadband amplifier of gain controllable |
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| CN205725665U true CN205725665U (en) | 2016-11-23 |
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| CN201620347467.8U Expired - Fee Related CN205725665U (en) | 2016-04-22 | 2016-04-22 | A kind of RF broadband amplifier of gain controllable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774522A (en) * | 2017-03-30 | 2017-05-31 | 成都优创复材科技有限公司 | A kind of vacuum dryer control system of nano phase change energy storage material |
| CN106843320A (en) * | 2017-03-30 | 2017-06-13 | 成都优创复材科技有限公司 | A kind of spray drying device temperature control system of microencapsulation material |
| CN108832905A (en) * | 2018-06-01 | 2018-11-16 | 电子科技大学 | A kind of multi-mode gain control circuit based on single VGA chip |
| CN110365303A (en) * | 2019-07-11 | 2019-10-22 | 厦门大学嘉庚学院 | A kind of controllable gain amplifier and control method |
| CN111049500A (en) * | 2019-12-31 | 2020-04-21 | 西安中科微精光子制造科技有限公司 | Filter for decomposing galvanometer and servo position |
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2016
- 2016-04-22 CN CN201620347467.8U patent/CN205725665U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774522A (en) * | 2017-03-30 | 2017-05-31 | 成都优创复材科技有限公司 | A kind of vacuum dryer control system of nano phase change energy storage material |
| CN106843320A (en) * | 2017-03-30 | 2017-06-13 | 成都优创复材科技有限公司 | A kind of spray drying device temperature control system of microencapsulation material |
| CN106843320B (en) * | 2017-03-30 | 2019-01-25 | 成都优创复材科技有限公司 | A kind of spray drying device temperature control system of microencapsulation material |
| CN106774522B (en) * | 2017-03-30 | 2019-01-25 | 成都优创复材科技有限公司 | A kind of vacuum dryer control system of nano phase change energy storage material |
| CN108832905A (en) * | 2018-06-01 | 2018-11-16 | 电子科技大学 | A kind of multi-mode gain control circuit based on single VGA chip |
| CN110365303A (en) * | 2019-07-11 | 2019-10-22 | 厦门大学嘉庚学院 | A kind of controllable gain amplifier and control method |
| CN111049500A (en) * | 2019-12-31 | 2020-04-21 | 西安中科微精光子制造科技有限公司 | Filter for decomposing galvanometer and servo position |
| CN111049500B (en) * | 2019-12-31 | 2024-02-09 | 西安中科微精光子科技股份有限公司 | Filter for decomposing vibrating mirror and servo position |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180612 Address after: No. 2, four archway in Xuanwu District, Nanjing, Jiangsu Co-patentee after: Yang Jun Patentee after: Liu Xinning Address before: 211169 Hong Jing Road, Jiangning District, Nanjing, Jiangsu Province, No. 99 Patentee before: Jinling Institute of Technology |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20210422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |