CN110445499A - A kind of Signal Booster and method of automatic gain - Google Patents
A kind of Signal Booster and method of automatic gain Download PDFInfo
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- CN110445499A CN110445499A CN201910735842.4A CN201910735842A CN110445499A CN 110445499 A CN110445499 A CN 110445499A CN 201910735842 A CN201910735842 A CN 201910735842A CN 110445499 A CN110445499 A CN 110445499A
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- 230000003321 amplification Effects 0.000 claims abstract description 24
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 24
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000264877 Hippospongia communis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000007634 remodeling Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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- Control Of Amplification And Gain Control (AREA)
Abstract
The present invention relates to a kind of Signal Booster of automatic gain and methods, including microcontroller, symmetrical uplink and downlink；Every line link includes input terminal low noise amplifier circuit, attenuator circuit, mid-scale voltage amplifying circuit, output end power amplification circuit, detecting circuit and amplifier circuit；The output of the input terminal low noise amplifier circuit is connected to the input terminal of mid-scale voltage amplifying circuit through attenuator circuit, the output end of the mid-scale voltage amplifying circuit is connected to the output the input terminal of power amplification circuit, the output end of the output end power amplification circuit is successively connected to the input terminal of microcontroller through detecting circuit, amplifier circuit, and the output end of the microcontroller is connected to attenuator circuit.The present invention can be realized the automatic gain of signal.
Description
Technical field
The present invention relates to field of communication technology, the Signal Booster and method of especially a kind of automatic gain.
Background technique
With being constantly progressive for wireless technology, communication clients are also constantly increasing, and in this case, there have been honeycombs to get over
Carry out a kind of smaller, the lower and lower phenomenon in base station.On the other hand, WCDMA signal is that connection is established by electromagnetic wave propagation
, still, in real life, because of the baffle of some buildings, inside some relatively towering buildings, basement, electricity
Ladder, market etc. much produce institute, will form the signal blind zone of communication.Therefore a kind of high-gain WCDMA Signal Booster is needed to increase
Strong signal.
At home, the Signal Booster having on the market at present, area coverage is at 300-500 square metres, and price is in 400-
500, maximum gain has 65db, and output power is in 20+1dBm.At abroad, area coverage is at 300-500 square metres, price exists
400-500, peak power output 20dBm, gain have 55dB.And Signal Booster in the prior art is not implemented automatic high
The effect of gain.
Summary of the invention
In view of this, can be realized letter the purpose of the present invention is to propose to a kind of Signal Booster of automatic gain and method
Number automatic gain.
The present invention is realized using following scheme: a kind of Signal Booster of automatic gain, including microcontroller, it is symmetrical on
Line link and downlink；
Every line link includes input terminal low noise amplifier circuit, attenuator circuit, mid-scale voltage amplifying circuit, output end power
Amplifying circuit, detecting circuit and amplifier circuit；
The output of the input terminal low noise amplifier circuit is connected to the input terminal of mid-scale voltage amplifying circuit through attenuator circuit,
The output end of the mid-scale voltage amplifying circuit is connected to the output the input terminal of power amplification circuit, and the output end power is put
The output end of big circuit is successively connected to the input terminal of microcontroller through detecting circuit, amplifier circuit, the microcontroller
Output end is connected to attenuator circuit.
Further, the microcontroller is single-chip microcontroller.
Further, the input terminal low noise amplifier circuit uses the identical BL051 low-noise amplifier of two parameters,
It is connected with decoupling circuit and filter after each low-noise amplifier in turn.
Further, the attenuator circuit uses the attenuator of model HMC273.
Further, the mid-scale voltage amplifying circuit uses the identical BG18C amplifier of two parameters, each amplification
All it is connected with decoupling circuit and filter after device in turn.
Further, the output end power amplification circuit uses power amplifier.
Further, the detecting circuit is diode detection circuit.
Further, the amplifier circuit uses LM358 amplifier.
The present invention also provides a kind of method of Signal Booster based on automatic gain described above, specifically: it is right
In a line link, input signal is acquired using input terminal low noise amplifier circuit, amplifies and reduces noise, using middle rank
Voltage amplifier circuit amplifies the voltage for the signal that input terminal low noise amplifier circuit exports, the letter for meeting the requirements it
Number amplitude, the output end power amplification circuit amplify the power of the output signal of mid-scale voltage amplifying circuit.
Further, the output of the output end power amplification circuit is put after detecting circuit by the amplifier circuit
Greatly, the signal of microcontroller acquisition amplifier circuit output, and whether within a preset range to judge the watt level of output signal；
If power is more than preset range, microcontroller control attenuator circuit is decayed；If power is less than preset range, microcontroller
Device discharges the decaying amplitudes in attenuator circuit；If power is within a preset range, directly export, and then realizes that circuit signal is defeated
Power is within a preset range out.
Compared with prior art, the invention has the following beneficial effects: the present invention is subtracted in input terminal using low-noise amplifier
Few noise, can be improved the signal-to-noise ratio of output；Voltage amplifier circuit is used in middle-end, can satisfy circuit output voltage amplitude；
In output end, it can guarantee that output power is sufficiently large using power amplifier.Meanwhile output end signal of the invention enters detection
Circuit, detecting circuit, amplifier, attenuator constitute auto-gain circuit, can be realized circuit signal output power in default model
In enclosing.
Detailed description of the invention
Fig. 1 is the functional block diagram of the embodiment of the present invention.
Fig. 2 is the physical circuit schematic diagram of the embodiment of the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and embodiments.
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As shown in Figure 1 and Figure 2, the Signal Booster for present embodiments providing a kind of automatic gain, primarily directed in
What state's telecommunications and China Unicom designed, because mode difference is not directed to China Mobile, China Telecom and China Unicom using WCDMA's
Mode, and China Mobile uses the mode of TD.The frequency range of the present embodiment in 2110-2170MHz, uplink 1920-1980MHz, under
Row 2110-2170MHz.It is the general frequency range of China Telecom and connection.
The Signal Booster of the present embodiment specifically includes microcontroller, symmetrical uplink and downlink；
Every line link includes input terminal low noise amplifier circuit, attenuator circuit, mid-scale voltage amplifying circuit, output end power
Amplifying circuit, detecting circuit and amplifier circuit；
The output of the input terminal low noise amplifier circuit is connected to the input terminal of mid-scale voltage amplifying circuit through attenuator circuit,
The output end of the mid-scale voltage amplifying circuit is connected to the output the input terminal of power amplification circuit, and the output end power is put
The output end of big circuit is successively connected to the input terminal of microcontroller through detecting circuit, amplifier circuit, the microcontroller
Output end is connected to attenuator circuit.
In the present embodiment, the microcontroller is single-chip microcontroller, concrete model STC15W408AS.
In the present embodiment, the input terminal low noise amplifier circuit is put using the identical BL051 low noise of two parameters
Big device is connected with decoupling circuit and filter in turn after each low-noise amplifier.
In the present embodiment, the attenuator circuit uses the attenuator of model HMC273.
In the present embodiment, the mid-scale voltage amplifying circuit uses the identical BG18C amplifier of two parameters, each
All it is connected with decoupling circuit and filter after amplifier in turn.Intergrade is two-stage amplification.
In the present embodiment, the output end power amplification circuit uses power amplifier.
Preferably, power amplification circuit, compared with voltage amplifier circuit, power amplification circuit has following characteristics:
(1) output power wants high as far as possible.
(2) efficiency wants high.
(3) non-linear distortion wants small, if the work of transistor, close to the limit, non-linear distortion is inevitable, institute
It avoids being distorted as far as possible so that them should be designed.
(4) in practical application circuit, transistor connects a radiator and an overcurrent protection link.
The present embodiment uses a stage power amplifier in output end, and selection performance is stable, the higher SXA389 amplification of efficiency
Device.
In the present embodiment, the detecting circuit is diode detection circuit.
In the present embodiment, the amplifier circuit uses LM358 amplifier.
The present embodiment additionally provides a kind of method of Signal Booster based on automatic gain described above, specifically:
For a line link, input signal is acquired using input terminal low noise amplifier circuit, amplifies and reduces noise, in
Step voltage amplifying circuit amplifies the voltage for the signal that input terminal low noise amplifier circuit exports, and meets the requirements it
Signal amplitude, the output end power amplification circuit amplify the power of the output signal of mid-scale voltage amplifying circuit.
In the present embodiment, the output of the output end power amplification circuit is after detecting circuit by the amplifier circuit
(LM358 amplifier) amplification, microcontroller acquire the signal of amplifier circuit output, and judge that the watt level of output signal is
It is no within a preset range；Single-chip microcontroller uses STC series.If power be more than preset range, microcontroller control attenuator circuit into
Row decaying, while judging the amplitude size of attenuator decaying, how much decaying can reach preset range；If power is less than default model
It encloses, then the decaying amplitudes in microcontroller release attenuator circuit；If power is within a preset range, directly export, Jin Ershi
Existing circuit signal output power is within a preset range.
Preferably, the entire circuit composition of the present embodiment is divided into upstream circuitry, downstream circuitry, single chip control module, upper,
Downstream circuitry be it is full symmetric, only the parameter of device is different.Every row circuit is broadly divided into three parts: (1) input terminal ---
Noise is reduced using low-noise amplifier, to improve the signal-to-noise ratio of output；(2) middle-end --- in order to meet circuit output voltage width
Value uses voltage amplifier circuit；(3) output end --- in order to guarantee that output power is enough big, use power amplifier.
The present embodiment is a kind of automatic high-gain booster for telecommunications and connection WCDMA signal.By radio frequency duplexer,
The uplink and downlink link that the components such as low-noise amplifier, attenuator, filter, power amplifier are constituted realizes power amplification.
Automatic gain part is made of detecting circuit, amplifier, single-chip microcontroller, attenuator, adjusts output power, output power is made to reach pre-
If value 22-25dBm.Signal has filter to be filtered before entering every grade of circuit, has the function that noise reduction.
Particularly, as shown in Fig. 2, the present embodiment output power divides three grades by indicator light, (LED1 in figure is extremely
LED3 it) shows.Testing result is shown when frequency range is in 2110-2170MHz, reaches maximum gain 72dB, stable output power
In 22-25dBm.
The circuit workflow entirely designed of the present embodiment is: (1) to the acquisition of signal, amplification and reduction noise defeated
Enter to hold in low noise amplifier circuit and complete, in the present embodiment, low noise amplifier circuit uses two amplifiers, and parameter has been
Exactly the same, signal-to-noise ratio is largely improved, and inhibit common-mode signal.(2) signal that front-end low noise amplifier comes out
Voltage carries out voltage amplification in this grade of middle-end, can satisfy the requirement to signal amplitude.(3) output end power amplification circuit,
The power of intergrade output signal is amplified, can be improved the power of entire circuit.(4) signal of output end enters detection
Circuit, detecting circuit, amplifier, attenuator constitute auto-gain circuit, to realize circuit signal output power in preset range
It is interior.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (10)
1. a kind of Signal Booster of automatic gain, which is characterized in that including microcontroller, symmetrical uplink and downlink chain
Road；
Every line link includes input terminal low noise amplifier circuit, attenuator circuit, mid-scale voltage amplifying circuit, output end power
Amplifying circuit, detecting circuit and amplifier circuit；
The output of the input terminal low noise amplifier circuit is connected to the input terminal of mid-scale voltage amplifying circuit through attenuator circuit,
The output end of the mid-scale voltage amplifying circuit is connected to the output the input terminal of power amplification circuit, and the output end power is put
The output end of big circuit is successively connected to the input terminal of microcontroller through detecting circuit, amplifier circuit, the microcontroller
Output end is connected to attenuator circuit.
2. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the microcontroller is single
Piece machine.
3. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the input terminal low noise
Amplifying circuit uses the identical BL051 low-noise amplifier of two parameters.
4. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the attenuator circuit is adopted
With the attenuator of model HMC273.
5. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the mid-scale voltage amplification
Circuit uses the identical BG18C amplifier of two parameters.
6. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the output end power is put
Big circuit uses power amplifier.
7. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the detecting circuit is two
Pole pipe detecting circuit.
8. a kind of Signal Booster of automatic gain according to claim 1, which is characterized in that the amplifier circuit is adopted
With LM358 amplifier.
9. a kind of method of the Signal Booster based on the described in any item automatic gains of claim 1-8, which is characterized in that right
In a line link, input signal is acquired using input terminal low noise amplifier circuit, amplifies and reduces noise, using middle rank
Voltage amplifier circuit amplifies the voltage for the signal that input terminal low noise amplifier circuit exports, the letter for meeting the requirements it
Number amplitude, the output end power amplification circuit amplify the power of the output signal of mid-scale voltage amplifying circuit.
10. a kind of automatic gain signal enhancing method according to claim 9, which is characterized in that the output end power
The output of amplifying circuit is amplified after detecting circuit by the amplifier circuit, and microcontroller acquires the letter of amplifier circuit output
Number, and whether within a preset range to judge the watt level of output signal；If power is more than preset range, microcontroller control declines
Subtract device circuit to decay；If power is less than preset range, microcontroller discharges the decaying amplitudes in attenuator circuit；If function
Rate within a preset range, then directly exports, and then realizes circuit signal output power within a preset range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735842.4A CN110445499B (en) | 2019-08-09 | 2019-08-09 | Automatic gain signal enhancer and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735842.4A CN110445499B (en) | 2019-08-09 | 2019-08-09 | Automatic gain signal enhancer and method |
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| CN110445499A true CN110445499A (en) | 2019-11-12 |
| CN110445499B CN110445499B (en) | 2024-05-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2722504Y (en) * | 2004-03-19 | 2005-08-31 | 美商天电国际股份有限公司 | Intelligent amplifier of wireless network |
| JP2011205362A (en) * | 2010-03-25 | 2011-10-13 | Mitsubishi Electric Corp | High frequency amplifier circuit |
| CN104218903A (en) * | 2014-08-15 | 2014-12-17 | 苏州华士无线科技有限公司 | WiFi (wireless fidelity) signal amplifier based on automatic gain control technology |
| CN205912047U (en) * | 2016-05-05 | 2017-01-25 | 深圳市上禾谷一科技有限公司 | Industrial grade WIFI signal enhancement ware |
| CN209897033U (en) * | 2019-08-09 | 2020-01-03 | 泉州师范学院 | Automatic gain signal enhancer |
-
2019
- 2019-08-09 CN CN201910735842.4A patent/CN110445499B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2722504Y (en) * | 2004-03-19 | 2005-08-31 | 美商天电国际股份有限公司 | Intelligent amplifier of wireless network |
| JP2011205362A (en) * | 2010-03-25 | 2011-10-13 | Mitsubishi Electric Corp | High frequency amplifier circuit |
| CN104218903A (en) * | 2014-08-15 | 2014-12-17 | 苏州华士无线科技有限公司 | WiFi (wireless fidelity) signal amplifier based on automatic gain control technology |
| CN205912047U (en) * | 2016-05-05 | 2017-01-25 | 深圳市上禾谷一科技有限公司 | Industrial grade WIFI signal enhancement ware |
| CN209897033U (en) * | 2019-08-09 | 2020-01-03 | 泉州师范学院 | Automatic gain signal enhancer |
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| CN110445499B (en) | 2024-05-14 |
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