CN203933552U - A kind of RF broadband amplifier switching based on stepping - Google Patents
A kind of RF broadband amplifier switching based on stepping Download PDFInfo
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- CN203933552U CN203933552U CN201420300675.3U CN201420300675U CN203933552U CN 203933552 U CN203933552 U CN 203933552U CN 201420300675 U CN201420300675 U CN 201420300675U CN 203933552 U CN203933552 U CN 203933552U
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- amplifying circuit
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Abstract
The utility model provides a kind of RF broadband amplifier switching based on stepping, comprise: input circuit, output circuit, four select a radio-frequency switch circuit, gain adjustable amplifier, digital regulation resistance, described input circuit is by first order amplifying circuit, second level amplifying circuit, third level amplifying circuit is connected to four and selects a radio-frequency switch circuit, first order amplifying circuit, second level amplifying circuit, the series connection of third level amplifying circuit arranges, four select a radio-frequency switch circuit to be connected in output circuit by gain adjustable amplifier, gain adjustable amplifier is connected with digital regulation resistance.The utility model adopts the function that manually completes stepping switching effectively to solve the problem of phase mutual interference between analog circuit modules, simultaneity factor control module is worn and torn taking digital regulation resistance as main machinery-free, data are read-write, degree of regulation is high, there is no noise, be easy to control, and can control four and select a switch realization gain adjustable.
Description
Technical field
The utility model relates to RF broadband amplifier field, is specially a kind of RF broadband amplifier switching based on stepping.
Background technology
Along with the development of modern communications technology, rf broadband amplifying technique has become a crucial technology in electrical communication system, broadband signal amplifier module is widely used in the systems such as communication, interference, investigation, broadcast, TV, broadband radar, in these systems, plays the important and pivotal role.
It is adjustable that existing most RF broadband amplifier signal following to low frequency 10MHZ and high band cannot be realized gain, as the following characteristic of 10MHz of ADL5201 gain amplifier module can not meet the consistency of gain, and the high band consistency of AD8336 gain amplifier module is inadequate, simultaneously to need cascade could meet the gain of 0-60dB adjustable for each gain amplifier, but the reduction that level joint conference produces index, the broadband signal amplifying technique also having, as Chinese patent 201120481483.3, although can more accurately realize broadband signal amplifies, but can not complete the adjustable function of stepping handoff gain, should use inconvenience, at present, most rf gain wide-band amplifier, all exist amplifying compared with the signal of low frequency or higher-frequency, cannot realize gain adjustable or gain fluctuation is larger, the inadequate weakness of gain consistency.
Utility model content
The technical problem that the utility model solves is to provide a kind of RF broadband amplifier switching based on stepping, to solve the problem proposing in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions: a kind of RF broadband amplifier switching based on stepping, comprise: input circuit, output circuit, four select a radio-frequency switch circuit, gain adjustable amplifier, digital regulation resistance, described input circuit is by first order amplifying circuit, second level amplifying circuit, third level amplifying circuit is connected to four and selects a radio-frequency switch circuit, first order amplifying circuit, second level amplifying circuit, the series connection of third level amplifying circuit arranges, four select a radio-frequency switch circuit to be connected in output circuit by gain adjustable amplifier, gain adjustable amplifier is connected with digital regulation resistance.
Described input circuit comprises to be penetrated with circuit.
Described output circuit comprises drive amplification circuit.
Compared with prior art, the beneficial effects of the utility model are: the utility model adopts the function that manually completes stepping switching effectively to solve the problem of phase mutual interference between analog circuit modules, simultaneity factor control module is worn and torn taking digital regulation resistance as main machinery-free, data are read-write, degree of regulation is high, there is no noise, be easy to control, can amplify below low frequency 10MHZ and the signal of high band, and can control four selects a switch realization gain adjustable, gain amplifier Characteristic fluctuation to signal is lower, and the consistency of gain is higher.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model.
Fig. 2 is input circuit figure of the present utility model.
Fig. 3 is first, second, third amplifying circuit of the present utility model.
Fig. 4 is gain adjustable amplifier circuit of the present utility model.
Fig. 5 is output circuit of the present utility model.
Embodiment
In order to make of the present utility modelly to realize technological means, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of RF broadband amplifier switching based on stepping, comprise: input circuit, output circuit, four select a radio-frequency switch circuit, gain adjustable amplifier, digital regulation resistance, described input circuit is by first order amplifying circuit, second level amplifying circuit, third level amplifying circuit is connected to four and selects a radio-frequency switch circuit, first order amplifying circuit, second level amplifying circuit, the series connection of third level amplifying circuit arranges, four select a radio-frequency switch circuit to be connected in output circuit by gain adjustable amplifier, gain adjustable amplifier is connected with digital regulation resistance.
Described output circuit comprises drive amplification circuit.
As shown in Figure 2, described input circuit comprises penetrates the coupling and the conversion that complete impedance with circuit, and AD8009 is as wide-band amplifier, and R1 is 50 Ω build-out resistors, drives the load of four rear portion terminations, keeps low differential gain and phase error simultaneously
As shown in Figure 4, the gain of the each amplifier of gain adjustable amplifier circuit, in the scope of 4.5dB to 20.25dB, is programmed individually or simultaneously with the step-length of 0.25dB, and this circuit provides the flat frequency performance that is independent of gain code in DC to 70MHz bandwidth.
As shown in Figure 5, output circuit carries out voltage to signal and synthesizes and electric current amplification, improve load driving force, D.C. regulated power supply provides operating voltage for whole system in addition, amplify the signal of giving by radio frequency follower, be given to third stage amplifier, third stage amplifier and radio frequency follower are connected to four and select a radio-frequency switch circuit to select a radio-frequency switch circuit to play a function of selecting gain-adjusted scope by manual control four, its output connects 0-16dB gain, amplify inputted signal, finally export amplifying signal by output driving circuit.Handover module is selected the better ADV3221 of stability, and controllable gain amplifier is selected owing to having high-gain, broadband, low noise, and is convenient to by the AD8366 of its voltage gain of digital regulation resistance control.Above-mentioned power amplifier selects signal quality in whole broadband range, all to keep higher level and the very little AD8009 of its gain fluctuation in flat rubber belting.
Described digital regulation resistance together with gain adjustable amplifier by actual demand, feedback arranges, accurately realizing gain controls, finally, rear class power output module further carries out power amplification, obtain higher output voltage signal, D.C. regulated power supply provides operating voltage for whole system, and input signal can realize by analog module and control module the signal gain control that stepping switches.
Described analog circuit, for whole system provides operating voltage, amplifies inputted signal by D.C. regulated power supply, finally exports amplifying signal.
Described gain adjustable amplifier is selected owing to having high-gain, broadband, low noise, and is convenient to by the AD8366 of its voltage gain of digital regulation resistance control.
Described drive amplification circuit selection signal quality all keeps higher level and the very little AD8009 of its gain fluctuation in flat rubber belting in whole broadband range.
In the utility model, analog circuit adopts four to select a radio-frequency switch circuit etc., select the amplifying signal of different inputs, the function that can manually complete stepping switching has effectively solved the problem of phase mutual interference between analog circuit modules, system control module taking digital regulation resistance as main regulation precision high, there is no noise, be easy to software control, can control four and select a radio-frequency switch circuit, complete comparatively accurate gain setting, compare traditional RF broadband amplifier, providing compared with low-frequency range and high band gain amplification and the conforming while of gain is being provided, the higher linearity can be provided.
More than show and described general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. the RF broadband amplifier switching based on stepping, comprise: input circuit, output circuit, four select a radio-frequency switch circuit, gain adjustable amplifier, digital regulation resistance, it is characterized in that: described input circuit is by first order amplifying circuit, second level amplifying circuit, third level amplifying circuit is connected to four and selects a radio-frequency switch circuit, first order amplifying circuit, second level amplifying circuit, the series connection of third level amplifying circuit arranges, four select a radio-frequency switch circuit to be connected in output circuit by gain adjustable amplifier, gain adjustable amplifier is connected with digital regulation resistance.
2. a kind of RF broadband amplifier switching based on stepping according to claim 1, is characterized in that: described input circuit comprises to be penetrated with circuit.
3. a kind of RF broadband amplifier switching based on stepping according to claim 1, is characterized in that: described output circuit comprises drive amplification circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300675.3U CN203933552U (en) | 2014-06-06 | 2014-06-06 | A kind of RF broadband amplifier switching based on stepping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420300675.3U CN203933552U (en) | 2014-06-06 | 2014-06-06 | A kind of RF broadband amplifier switching based on stepping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203933552U true CN203933552U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420300675.3U Expired - Fee Related CN203933552U (en) | 2014-06-06 | 2014-06-06 | A kind of RF broadband amplifier switching based on stepping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203933552U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831360A (en) * | 2017-12-08 | 2018-03-23 | 成都前锋电子仪器有限责任公司 | A kind of rf power measurement device |
| CN107843766A (en) * | 2017-12-08 | 2018-03-27 | 成都前锋电子仪器有限责任公司 | A kind of signal conditioning circuit for rf power measurement |
| CN108270410A (en) * | 2018-02-06 | 2018-07-10 | 华中科技大学 | A kind of bandwidth adjustable programmable amplifier multistage with gain and control method |
-
2014
- 2014-06-06 CN CN201420300675.3U patent/CN203933552U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831360A (en) * | 2017-12-08 | 2018-03-23 | 成都前锋电子仪器有限责任公司 | A kind of rf power measurement device |
| CN107843766A (en) * | 2017-12-08 | 2018-03-27 | 成都前锋电子仪器有限责任公司 | A kind of signal conditioning circuit for rf power measurement |
| CN107831360B (en) * | 2017-12-08 | 2024-01-30 | 成都前锋电子仪器有限责任公司 | Radio frequency power measuring device |
| CN107843766B (en) * | 2017-12-08 | 2024-01-30 | 成都前锋电子仪器有限责任公司 | Signal conditioning circuit for radio frequency power measurement |
| CN108270410A (en) * | 2018-02-06 | 2018-07-10 | 华中科技大学 | A kind of bandwidth adjustable programmable amplifier multistage with gain and control method |
| CN108270410B (en) * | 2018-02-06 | 2020-05-19 | 华中科技大学 | Bandwidth and gain multi-stage adjustable program control amplifier and control method |
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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 |
Granted publication date: 20141105 Termination date: 20150606 |
|
| EXPY | Termination of patent right or utility model |