CN110445499B - Automatic gain signal enhancer and method - Google Patents
Automatic gain signal enhancer and method Download PDFInfo
- Publication number
- CN110445499B CN110445499B CN201910735842.4A CN201910735842A CN110445499B CN 110445499 B CN110445499 B CN 110445499B CN 201910735842 A CN201910735842 A CN 201910735842A CN 110445499 B CN110445499 B CN 110445499B
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- amplifying circuit
- power
- automatic gain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003623 enhancer Substances 0.000 title abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The invention relates to an automatic gain signal enhancer and a method thereof, comprising a microcontroller, a symmetrical uplink and a symmetrical downlink; each of the uplinks comprises an input end low noise amplifying circuit, an attenuator circuit, a middle-level voltage amplifying circuit, an output end power amplifying circuit, a detection circuit and an amplifier circuit; the output of the input low-noise amplifying circuit is connected to the input of the intermediate-level voltage amplifying circuit through the attenuator circuit, the output of the intermediate-level voltage amplifying circuit is connected to the input of the output power amplifying circuit, the output of the output power amplifying circuit is connected to the input of the microcontroller through the detection circuit and the amplifier circuit in sequence, and the output of the microcontroller is connected to the attenuator circuit. The invention can realize the automatic gain of the signal.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an automatic gain signal enhancer and a method.
Background
With the continuous progress of wireless technology, communication clients are growing, and in this case, a phenomenon that cells are smaller and base stations are lower and lower occurs. On the other hand, WCDMA signals are linked by propagation of electromagnetic waves, but in real life, because of the barriers of some buildings, signal blind areas of communication are formed in many places such as inside some relatively large buildings, basements, elevators, shops, etc. There is therefore a need for a high gain WCDMA signal enhancer to enhance signals.
In China, the coverage area of the signal enhancer on the current market is 300-500 square meters, the price is 400-500, the maximum gain is 65db, and the output power is 20+1dBm. The coverage area is 300-500 square meters, the price is 400-500, the maximum output power is 20dBm, and the gain is 55dB. And none of the signal enhancers in the prior art achieve the effect of automatic high gain.
Disclosure of Invention
In view of the above, the present invention provides an automatic gain signal enhancer and a method thereof, which can realize automatic gain of a signal.
The invention is realized by adopting the following scheme: an automatic gain signal booster comprises a microcontroller, a symmetrical uplink and a downlink;
each of the uplinks comprises an input end low noise amplifying circuit, an attenuator circuit, a middle-level voltage amplifying circuit, an output end power amplifying circuit, a detection circuit and an amplifier circuit;
The output of the input low-noise amplifying circuit is connected to the input of the intermediate-level voltage amplifying circuit through the attenuator circuit, the output of the intermediate-level voltage amplifying circuit is connected to the input of the output power amplifying circuit, the output of the output power amplifying circuit is connected to the input of the microcontroller through the detection circuit and the amplifier circuit in sequence, and the output of the microcontroller is connected to the attenuator circuit.
Further, the microcontroller is a single-chip microcomputer.
Furthermore, the input end low noise amplifying circuit adopts two BL051 low noise amplifiers with the same parameters, and a decoupling circuit and a filter are sequentially connected behind each low noise amplifier.
Further, the attenuator circuit employs an attenuator model HMC 273.
Further, the intermediate-stage voltage amplifying circuit adopts two BG18C amplifiers with the same parameters, and a decoupling circuit and a filter are sequentially connected behind each amplifier.
Further, the output end power amplifying circuit adopts a power amplifier.
Further, the detection circuit is a diode detection circuit.
Further, the amplifier circuit employs an LM358 amplifier.
The invention also provides a method for the automatic gain-based signal enhancer, which comprises the following steps: for one line of link, an input end low noise amplifying circuit is used for collecting, amplifying and reducing noise, a middle-level voltage amplifying circuit is used for amplifying the voltage of a signal output by the input end low noise amplifying circuit so as to enable the signal to meet the required signal amplitude, and an output end power amplifying circuit is used for amplifying the power of an output signal of the middle-level voltage amplifying circuit.
Further, the output of the output end power amplifying circuit is amplified by the amplifier circuit after passing through the detection circuit, and the microcontroller collects signals output by the amplifier circuit and judges whether the power of the output signals is within a preset range or not; if the power exceeds the preset range, the microcontroller controls the attenuator circuit to attenuate; if the power is smaller than the preset range, the microcontroller releases the attenuation amplitude in the attenuator circuit; if the power is within the preset range, the power is directly output, and further the output power of the circuit signal is within the preset range.
Compared with the prior art, the invention has the following beneficial effects: the invention adopts the low noise amplifier at the input end to reduce noise, and can improve the signal-to-noise ratio of output; the middle end adopts a voltage amplifying circuit, so that the output voltage amplitude of the circuit can be met; at the output end, the power amplifier can ensure that the output power is large enough. Meanwhile, the output end signal of the invention enters the detection circuit, and the detection circuit, the amplifier and the attenuator form an automatic gain circuit, so that the output power of the circuit signal can be within a preset range.
Drawings
Fig. 1 is a functional block diagram of an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1 and fig. 2, the present embodiment provides an automatic gain signal booster, which is designed mainly for chinese telecom and chinese Unicom, and adopts WCDMA mode for chinese telecom and chinese Unicom and TD mode for chinese mobile because the modes are different. The frequency band of the embodiment is 2110-2170MHz, 1920-1980MHz in the uplink and 2110-2170MHz in the downlink. Is a universal frequency band for China telecom and Unicom.
The signal booster of the present embodiment specifically includes a microcontroller, symmetrical uplink and downlink;
each of the uplinks comprises an input end low noise amplifying circuit, an attenuator circuit, a middle-level voltage amplifying circuit, an output end power amplifying circuit, a detection circuit and an amplifier circuit;
The output of the input low-noise amplifying circuit is connected to the input of the intermediate-level voltage amplifying circuit through the attenuator circuit, the output of the intermediate-level voltage amplifying circuit is connected to the input of the output power amplifying circuit, the output of the output power amplifying circuit is connected to the input of the microcontroller through the detection circuit and the amplifier circuit in sequence, and the output of the microcontroller is connected to the attenuator circuit.
In this embodiment, the microcontroller is a single-chip microcomputer, and the specific model is STC15W408AS.
In this embodiment, the input end low noise amplifying circuit adopts two BL051 low noise amplifiers with the same parameters, and a decoupling circuit and a filter are sequentially connected behind each low noise amplifier.
In this embodiment, the attenuator circuit employs an attenuator model HMC 273.
In this embodiment, the intermediate-stage voltage amplifying circuit adopts two BG18C amplifiers with the same parameters, and a decoupling circuit and a filter are sequentially connected behind each amplifier. The intermediate stage is a two-stage amplification.
In this embodiment, the output power amplifying circuit adopts a power amplifier.
Preferably, compared with the voltage amplifying circuit, the power amplifying circuit has the following characteristics:
(1) The output power is as high as possible.
(2) The efficiency is high.
(3) Nonlinear distortion is small and is unavoidable if the operation of the transistors is close to the limit, so they should be designed to avoid distortion as much as possible.
(4) In a practical circuit, a transistor is connected to a heat sink and an overcurrent protection link.
In the embodiment, a primary power amplifier is adopted at the output end, and an SXA389 amplifier with stable performance and higher efficiency is selected.
In this embodiment, the detection circuit is a diode detection circuit.
In this embodiment, the amplifier circuit employs an LM358 amplifier.
The embodiment also provides a method for a signal enhancer based on the automatic gain, which specifically comprises the following steps: for one line of link, an input end low noise amplifying circuit is used for collecting, amplifying and reducing noise, a middle-level voltage amplifying circuit is used for amplifying the voltage of a signal output by the input end low noise amplifying circuit so as to enable the signal to meet the required signal amplitude, and an output end power amplifying circuit is used for amplifying the power of an output signal of the middle-level voltage amplifying circuit.
In this embodiment, the output of the output end power amplifying circuit is amplified by the amplifying circuit (LM 358 amplifier) after passing through the detecting circuit, and the microcontroller collects the signal output by the amplifying circuit and determines whether the power of the output signal is within a preset range; STC series is used by the singlechip. If the power exceeds the preset range, the microcontroller controls the attenuator circuit to attenuate, and meanwhile, the amplitude of the attenuation of the attenuator is judged, and the attenuation can reach the preset range; if the power is smaller than the preset range, the microcontroller releases the attenuation amplitude in the attenuator circuit; if the power is within the preset range, the power is directly output, and further the output power of the circuit signal is within the preset range.
Preferably, the whole circuit of the embodiment is composed of an uplink circuit, a downlink circuit and a singlechip control module, and the uplink circuit and the downlink circuit are completely symmetrical and only have different parameters of devices. Each row of circuits is mainly divided into three parts: (1) The input end adopts a low noise amplifier to reduce noise so as to improve the signal-to-noise ratio of output; (2) Middle end-in order to meet the output voltage amplitude of the circuit, a voltage amplifying circuit is adopted; (3) Output-in order to ensure that the output power is large enough, a power amplifier is used.
This embodiment is an automatic high gain booster for telecommunication and Wideband Code Division Multiple Access (WCDMA) signals. The power amplification is realized by the uplink and downlink links composed of components such as a radio frequency duplexer, a low noise amplifier, an attenuator, a filter, a power amplifier and the like. The automatic gain part is composed of a detection circuit, an amplifier, a singlechip and an attenuator, and the output power is regulated to reach the preset value of 22-25dBm. The signals are filtered by a filter before entering each stage of circuit, so that the effect of noise reduction is achieved.
In particular, as shown in fig. 2, the output power of the present embodiment is displayed in three levels by the indication lamps (LED 1 to LED3 in the figure). The detection result shows that when the frequency band is 2110-2170MHz, the maximum gain is 72dB, and the output power is stabilized at 22-25dBm.
The circuit workflow of the overall design of this embodiment is: (1) The acquisition, amplification and noise reduction of the signals are completed in the input end low noise amplification circuit, and in the embodiment, the low noise amplification circuit adopts two amplifiers, the parameters of which are identical, so that the signal to noise ratio is improved to a great extent, and common mode signals are suppressed. (2) The signal voltage from the front-end low-noise amplifier is amplified at the middle-end stage, so that the requirement on the signal amplitude can be met. (3) And the output end power amplifying circuit amplifies the power of the intermediate-stage output signal and can improve the power of the whole circuit. (4) The signal of the output end enters a detection circuit, and the detection circuit, an amplifier and an attenuator form an automatic gain circuit so as to realize that the output power of the circuit signal is within a preset range.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (8)
1. An automatic gain signal booster comprising a microcontroller, symmetrical uplink and downlink;
each of the uplinks comprises an input end low noise amplifying circuit, an attenuator circuit, a middle-level voltage amplifying circuit, an output end power amplifying circuit, a detection circuit and an amplifier circuit;
The output of the input low-noise amplifying circuit is connected to the input end of the intermediate-level voltage amplifying circuit through the attenuator circuit, the output end of the intermediate-level voltage amplifying circuit is connected to the input end of the output power amplifying circuit, the output end of the output power amplifying circuit is connected to the input end of the microcontroller through the detection circuit and the amplifier circuit in sequence, and the output end of the microcontroller is connected to the attenuator circuit;
The microcontroller is a singlechip; the output end power amplifying circuit adopts a power amplifier.
2. The automatic gain signal booster of claim 1 wherein said input low noise amplifier circuit employs two BL051 low noise amplifiers of the same parameters.
3. An automatic gain signal booster according to claim 1 wherein said attenuator circuit employs an attenuator model HMC 273.
4. The automatic gain signal booster of claim 1 wherein the intermediate voltage amplification circuit employs two BG18C amplifiers of the same parameters.
5. An automatic gain signal booster according to claim 1 wherein said detection circuit is a diode detection circuit.
6. An automatic gain signal booster according to claim 1 wherein said amplifier circuit employs an LM358 amplifier.
7. A method of an automatic gain signal booster according to any one of claims 1 to 6, characterized in that for a line link, an input end low noise amplifying circuit is used to collect, amplify and reduce noise, a middle voltage amplifying circuit is used to amplify the voltage of the signal output by the input end low noise amplifying circuit so as to make it meet the required signal amplitude, and the output end power amplifying circuit amplifies the power of the output signal of the middle voltage amplifying circuit.
8. The automatic gain signal enhancing method of claim 7, wherein the output of the output power amplifying circuit is amplified by the amplifying circuit after passing through the detecting circuit, and the microcontroller collects the signal output by the amplifying circuit and judges whether the power of the output signal is within a preset range; if the power exceeds the preset range, the microcontroller controls the attenuator circuit to attenuate; if the power is smaller than the preset range, the microcontroller releases the attenuation amplitude in the attenuator circuit; if the power is within the preset range, the power is directly output, and further the output power of the circuit signal is within the 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110445499A CN110445499A (en) | 2019-11-12 |
| CN110445499B true CN110445499B (en) | 2024-05-14 |
Family
ID=68434293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735842.4A Active CN110445499B (en) | 2019-08-09 | 2019-08-09 | Automatic gain signal enhancer and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110445499B (en) |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110445499A (en) | 2019-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021169250A1 (en) | Radio frequency power amplifier circuit and gain control method | |
| CN214851148U (en) | S-band power amplification assembly | |
| Wang et al. | A 5.2-to-13GHz class-AB CMOS power amplifier with a 25.2 dBm peak output power at 21.6% PAE | |
| Li et al. | A highly efficient SiGe differential power amplifier using an envelope-tracking technique for 3GPP LTE applications | |
| CN102420573A (en) | Setting method for amplifying cluster communication power and power amplifier | |
| CN102291091B (en) | Linear microwave power amplifier | |
| CN209897033U (en) | Automatic gain signal enhancer | |
| CN110445499B (en) | Automatic gain signal enhancer and method | |
| CN108988897B (en) | Railway LTE-R wireless communication terminal equipment | |
| CN203368405U (en) | Two-way noise cancelling-type current multiplex low-noise amplifier | |
| CN201639582U (en) | Repeater solving mobile object coverage | |
| CN101783654B (en) | High-gain broadband radio-frequency low noise amplifier | |
| CN109120289B (en) | Short-wave radio frequency front-end processing module and method | |
| CN101742631B (en) | Repeater for solving covering of moving body and control method thereof | |
| CN202282776U (en) | Receiver and base station system | |
| CN102932017A (en) | Radio frequency receiver | |
| CN202424629U (en) | Trunking communication power amplifier | |
| CN2819659Y (en) | Direct WCDMA broadcast station of mobile telecommunication | |
| CN1103135C (en) | Method and device for increasing anti-interference of receiver | |
| CN205160479U (en) | Transmitting channel power amplification circuit of UHF frequency channel | |
| CN209120138U (en) | A kind of power amplifier module for supporting MIMO technology for 5G antenna | |
| CN204376835U (en) | Adopt the Doherty power amplifier of multistage bypass amplifier | |
| CN212785355U (en) | Wireless repeater with 350MHz uplink output power and large downlink output power | |
| KR101514985B1 (en) | Energy dispersion consuming type hybrid radio communications repeater | |
| CN112039554A (en) | Terminal equipment and method for railway wireless communication |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |