CN201682496U - Wireless communication network intelligent amplifier - Google Patents

Wireless communication network intelligent amplifier Download PDF

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Publication number
CN201682496U
CN201682496U CN2009202932024U CN200920293202U CN201682496U CN 201682496 U CN201682496 U CN 201682496U CN 2009202932024 U CN2009202932024 U CN 2009202932024U CN 200920293202 U CN200920293202 U CN 200920293202U CN 201682496 U CN201682496 U CN 201682496U
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CN
China
Prior art keywords
output
input
amplifier
emission
monitor
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Expired - Fee Related
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CN2009202932024U
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Chinese (zh)
Inventor
何世平
杭劼
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SHENZHEN HUASONGLING COMMUNICATION TECHNOLOGY Co Ltd
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SHENZHEN HUASONGLING COMMUNICATION TECHNOLOGY Co Ltd
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Priority to CN2009202932024U priority Critical patent/CN201682496U/en
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Publication of CN201682496U publication Critical patent/CN201682496U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The utility model discloses a wireless communication network intelligent amplifier, which mainly and structurally consists of a power monitor, an amplitude detector, a sending/receiving control circuit, a varible attenuator gain control module, a sending amplification module, sending/receiving switch modules, a band-pass wave filter, a low-noise amplifier and a power supply circuit, wherein the output end of the power monitor is connected with the amplitude monitor, the output end of the amplitude monitor is respectively connected with the varible attenuator gain control module and the sending/receiving control circuit, the output end of the sending/receiving control circuit is respectively connected with the two sending/receiving switch modules, and the output end of the varible attenuator gain control module is sequentially connected with the sending amplification module and one sending/receiving switch module. The utility model has the intelligent gain control function, can reduce the output signal deformation under the condition of different input signals, can ensure the maximum output power, and can effectively lengthen the signal sending distance.

Description

The wireless communication networks intelligent amplifier
Technical field
The utility model relates to a kind of signal amplifying apparatus, relates in particular to a kind of wireless communication networks intelligent amplifier that is used for spread spectrum communication and WLAN (wireless local area network).
Background technology
Existing wireless frequency expansion and wireless local network equipment can only use as short distance or indoor transmissions usually owing to be subjected to the low-power predetermined restricted.If be used in outdoorly when length of antenna's Distance Transmission, because the high frequency cable loss between indoor equipment and exterior aerial, through-put power can descend significantly usually and can not reach transmission.The general method that solves is: use traditional two-way amplifier, improve through-put power and receiving sensitivity.Say that from technological standpoint the technology that amplifier adopted of this quasi-tradition is: the size of amplifier power output by amplifier fixedly gain amplifier realize.But this type of technology has great defective in the use: because different manufacturers Wireless Communication Equipment power output does not wait and technical specification and performance inconsistent, and indoor uncertain to outdoor cable length and specification when specifically setting up, make traditional Amplifier Gain index must carry out the control of artificial strict thin portion, otherwise often cause power output not enough (it is low to gain), influence transmission range, perhaps exceed the proper limits in righting a wrong again, cause output distortion (it is too high to gain), influence the transmission signals quality and cause unnecessary spectral interference.Here it is promptly uses amplifier, and existing wireless frequency expansion and WLAN (wireless local area network) network equipment be the main cause of not competent outdoor long Distance Transmission still.
Summary of the invention
In order to overcome the defective of above-mentioned prior art, the purpose of this utility model provides a kind of wireless network intelligent amplifier with automatic adjusting gain amplifier function, this amplifier is at various distinct devices, different cable lengths, under different installation situation, all can detect the power of input amplifier automatically, and can be according to the size of input signal, automatically adjust and stablize its gain, make it reach in the appropriate scope admissible power output and be unlikely to cause signal deficiency or distorted signals, thereby guaranteed long distance, high-quality, the low aerial radiation output of disturbing, the production of also giving amplifier, sell, install and use very big convenience is provided.
To achieve these goals, principle of the present utility model is: being different from traditional amplifier is the gain controlling basis with the output signal, intelligent amplifier of the present utility model, use the basis of input signal, if be input to the overflow of amplifier, promptly indoor short to outside cable as its gain controlling, loss is little, perhaps under the excessive situation of wireless network card power output, just increase certain decay, make the last power output of amplifier remain in the predetermined scope.If be input to the signal gets too small of amplifier, promptly indoor long to outside cable, loss is big, or under the too little situation of wireless network card power output, just increase Amplifier Gain (or reducing decay), make the last power output of amplifier in predetermined scope, remain unchanged.
The concrete technical scheme that the utility model is taked is: a kind of wireless network intelligent amplifier, comprise emission/reception control circuit, emission amplification module, transmit/receive switch module, band pass filter, low noise amplifier and power circuit, it is characterized in that: it also comprises power monitor, amplitude monitor, variable attenuator gain control module, and wherein said transmit/receive switch module has an output that is connected with antenna and an output that is connected with the band pass filter input; The output of described power monitor is connected with the input of described amplitude monitor; The output of described amplitude monitor is connected with the input of variable attenuator gain control module and the input of emission/reception control circuit respectively; The output of described emission/reception control circuit is connected respectively with the input of two described transmit/receive switch modules; The output of described variable attenuator gain control module is connected with the input of emission amplification module; The output of described emission amplification module is connected with an input of described transmit/receive switch module, the output of band pass filter is connected with the input of low noise amplifier, and the output of described low noise amplifier is connected with the input of another transmit/receive switch module; The output of described transmit/receive switch module is connected with the input of variable attenuator gain control module.
It is further characterized in that: described power monitor is made up of radio-frequency power sensor and amplitude amplifier two parts, the signal output part of described radio-frequency power sensor is connected with described amplitude amplifier input terminal, and the signal output part of described amplitude amplifier is connected with the signal input part of described amplitude monitor.
Its further feature also is: described amplitude monitor mainly is made up of voltage comparator, subtracter and reference voltage generator, the output of described amplitude amplifier is connected with the input of described voltage comparator and the input of described subtracter respectively, the output of described reference voltage generator is connected with the input of described subtracter, the output of described subtracter is connected with the input of described variable attenuator gain control module, and the output of described voltage comparator is connected with the input of described emission/reception control circuit.
The output of described power circuit is connected with the input of power monitor.
Because the utility model has adopted above technical scheme, so have the following advantages:
1) amplifier of the present utility model has overcome the inherent shortcoming of traditional amplifier, can both be operated in optimum state when different input signals, the maximum efficiency of performance amplifier;
2) amplifier of the present utility model provides looser operation parameter, thereby is applied in hardware and environment for use widely;
3) amplifier of the present utility model can provide standardized amplifier architecture, thereby makes the installation and maintenance of amplifier become convenient more economically;
4) the utility model can be safeguarded amplifier at the constant output that uses in constituting, and guarantees the signal transmission of minimum distortion.
Description of drawings
Fig. 1 is the structural principle block diagram of amplifier of the present utility model
Fig. 2 is a network catenation principle block diagram of the present utility model
Fig. 3 is the circuit diagram of power monitor module of the present utility model
Fig. 4 is radio-frequency power monitoring of the present utility model and control operation block diagram
Fig. 5 is subtraction circuit figure of the present utility model
Fig. 6 is the circuit diagram of the utility model voltage comparator circuit
Fig. 7 is the circuit diagram of the utility model transmit/receive switch module
Fig. 8 is the circuit theory diagrams of an embodiment of the present utility model
Fig. 9 uses schematic diagram for the typical case of amplifier of the present utility model
Embodiment
Describe the utility model by the following examples, should be noted that, cited embodiment should not understand the restriction to utility model.
As shown in Figure 1, wireless network intelligent amplifier of the present utility model mainly is made up of power monitor 1, amplitude monitor 2, emission/reception control circuit 3, variable attenuator gain control module 4, emission amplification module 5, two transmit/receive switch modules 6, band pass filter 7, low noise amplifier 8 and power circuits 9.The output of power monitor 1 is connected with the input of amplitude monitor 2, the output of amplitude monitor 2 is connected with the input of variable attenuator gain control module 4 and the input of emission/reception control circuit 3 respectively, the output of emission/reception control circuit 3 is connected respectively with the input of two transmit/receive switch modules 6, the output signal of emission/reception control circuit 3 is used for controlling two transmit/receive switch modules 6, realizes the emission/receiving function of amplifier.
The output of variable attenuator gain control module 4 is connected with the input of emission amplification module, the output of emission amplification module 5 is connected with the input of a transmit/receive switch module 6, this transmit/receive switch module 6 has an output that is connected with antenna and an output that is connected with band pass filter 7 inputs, the output of band pass filter 7 is connected with the input of low noise amplifier 8, the output of low noise amplifier 8 is connected with the input of another transmit/receive switch module 6, and the output of this transmit/receive switch module 6 is connected with the input of variable attenuator gain control module 4.
Power supply 10 circuit shown in Fig. 1 are simple voltage stabilizing function circuit, are used for generation+5V power supply, and for the amplifier operate as normal, its output is connected with the input of power monitor 1.
As shown in Figure 2, wireless network intelligent amplifier of the present utility model 13 is connected with radio-frequency antenna 15 by radio frequency cable 14, direct current injector 16 and wireless device 17 (as modulator-demodulator etc.) be connected with wireless network intelligent amplifier 13 of the present utility model by radio frequency cable 14.
As shown in Figure 3, power monitor 1 of the present utility model is made up of radio-frequency power sensor 11 and amplitude amplifier 12 two parts.
As shown in Figure 4, amplitude monitor 2 of the present utility model mainly is made up of voltage comparator 21, subtracter 22 and reference voltage generator 23.The output of power monitor 1 is connected with the input of voltage comparator 21 and the input of subtracter 22 respectively, the output of reference voltage generator 23 is connected with the input of subtracter 22, and subtracter 22 can be discerned the relative variation between the output voltage of reference voltage that reference voltage generator 23 produces and power monitor 1.The output of subtracter 22 is connected with the input of variable attenuator gain control module 4.The output of voltage comparator 21 is connected with the input of emission/reception control circuit 3, and the output signal of voltage comparator 21 is being controlled the transmitting-receiving switching of emission/reception control circuit 3.
The amplitude of the emission threshold voltage (TX) 18 that voltage comparator 23 obtains after with the amplitude of input signal and power supply 10 rectifying and voltage-stabilizings compares, when input signal is lower than emission threshold voltage 18, voltage comparator 21 is output as low level, makes emission/reception control circuit 3 be in receiving mode; When input signal was higher than emission threshold voltage 18, voltage comparator 21 was output as high level, makes emission/reception control circuit 3 be in emission mode.The height of voltage comparator 21 output voltages has determined mode of operation of the present utility model.When amplifier is operated in receiving mode, emission/reception control circuit 3 will be controlled transmit/receive switch module 6, make the reception path of switch connection amplifier, signal send into band pass filter 7 by antenna end and amplify by low noise amplifier 8 after deliver to receiving terminal.When amplifier is operated in emission mode, emission/reception control circuit 3 will be controlled transmit/receive switch module 6, make the emission path of switch connection amplifier, the signal of receiving terminal input is sent into variable attenuator 4 and amplify by emission amplifier after deliver to output to antenna 15.The output voltage of voltage comparator 21 is determined by the output voltage of emission threshold voltage 18 with radio-frequency power sensor 11.When the output voltage of radio-frequency power sensor 11 is lower than emission threshold voltage 18, amplifier will convert receive mode to from radiation pattern.
Subtracter 22 circuit diagrams of the present utility model as shown in Figure 5.
Voltage comparator circuit 21 of the present utility model as shown in Figure 6.
The circuit diagram of transmit/receive switch module 6 of the present utility model as shown in Figure 7.
Figure 8 shows that the radio frequency amplitude monitoring of a typical Application Example of the present utility model and the schematic diagram of gain control circuit.The input signal of amplifier is input to power monitor 1 through overcoupled circuits, after power sensitive device 11 in the power monitor 1 is monitored out signal and 12 amplifications of process amplitude amplifier, one the tunnel is input to subtracter 22 circuit controls variable attenuator 4, another road is input to voltage comparator 21, voltage comparator 21 compares the amplitude of input signal with the amplitude of launching threshold voltage 18, when input signal is lower than emission threshold voltage 18, voltage comparator 21 is output as low level, makes emission/reception control circuit 3 be in receiving mode.When input signal was higher than emission threshold voltage 18, voltage comparator 21 was output as high level, makes emission/reception control circuit 3 be in emission mode.When amplifier is operated in receiving mode, emission/reception control circuit 3 will be controlled reception/emission switch module 6, make the reception path of switch connection amplifier 12, signal send into band pass filter 7 by antenna end and amplify by low noise amplifier 8 after deliver to receiving terminal.When amplifier is operated in emission mode, emission/reception control circuit 3 will be controlled reception/emission switch module 6, make the emission path of switch connection amplifier, the signal of receiving terminal input is sent into variable attenuator 4 and amplify by emission amplifier after deliver to output to antenna 15.
As shown in Figure 9, generally speaking, amplifier is installed on the exterior aerial bar.Utilize radio frequency cable 14 to connect amplifier and DC feedback device 24.DC feedback device 24 is installed in the indoor environment place near modem device or other less radio-frequency equipment 25 generally speaking.
The utility model can carry out power magnitude monitoring and automatic gain control, and can monitoring also automatically to the loss that input power, cable and conversion head loss etc. cause, intelligent compensation loses accordingly.Because existing low price spread spectrum communication and WLAN (wireless local area network), all kinds of Wireless Telecom Equipments such as digital cordless phones and wireless automatic identification mostly are TDD mode greatly, and this amplifier is that TDD mode (TDD) Shi Gengneng appears its advantage suddenly in working method.Unique intelligent gain control circuit, can control its output from the size of reason wireless signal input, can continuous monitoring TDD mode (TDD) signal, guarantee the high-quality reliable transmission of signal, to amplifier production, operation and maintenance brings great convenience.
The utility model can be abide by the law fully and be gone up the strict regulations of power, for " " the most cost-effective solution of (and comprising one li at first) communication applications in last.The utility model has been arranged, can expand into usually in last in sight line (Line-of-Sight) last tens of in.For example, be connected the field of telemonitoring and remote data acquisition between office building and the building.The utility model can directly be applied in direct sequence spread spectrum (DSSS) and frequency-hopping spread spectrum (FHSS) system (perhaps using other wireless device such as wireless LAN card etc.), strengthens its signal strength signal intensity, improves input gain.By amplifier embedded dynamic power sensor, the power output of amplifier is adjusted by the input power that monitors.The intelligent gain control function of amplifier of the present utility model can make amplifier can both reduce the output signal distortion under different input signal conditions, and guarantee peak power output, prolongs the signal transmission range effectively.
Obviously; foregoing is just in order to illustrate characteristics of the present utility model; and be not to restriction of the present utility model, the variation that the those of ordinary skill in relevant technologies field is made in the corresponding techniques field according to the utility model should belong to protection category of the present utility model.

Claims (3)

1. wireless network intelligent amplifier, comprise emission/reception control circuit, emission amplification module, transmit/receive switch module, band pass filter, low noise amplifier and power circuit, it is characterized in that: it also comprises power monitor, amplitude monitor, variable attenuator gain control module, and wherein said transmit/receive switch module has an output that is connected with antenna and an output that is connected with the band pass filter input; The output of described power monitor is connected with the input of described amplitude monitor; The output of described amplitude monitor is connected with the input of variable attenuator gain control module and the input of emission/reception control circuit respectively; The output of described emission/reception control circuit is connected respectively with the input of two described transmit/receive switch modules; The output of described variable attenuator gain control module is connected with the input of emission amplification module; The output of described emission amplification module is connected with an input of described transmit/receive switch module, the output of band pass filter is connected with the input of low noise amplifier, and the output of described low noise amplifier is connected with the input of another transmit/receive switch module; The output of described transmit/receive switch module is connected with the input of variable attenuator gain control module.
2. wireless network intelligent amplifier according to claim 1, it is characterized in that: described power monitor is made up of radio-frequency power sensor and amplitude amplifier two parts, and the signal output part of described radio-frequency power sensor is connected with described amplitude amplifier input terminal; The signal output part of described amplitude amplifier is connected with the signal input part of described amplitude monitor.
3. wireless network intelligent amplifier according to claim 2, it is characterized in that: described amplitude monitor mainly is made up of voltage comparator, subtracter and reference voltage generator, and the output of described amplitude amplifier is connected with the input of described voltage comparator and the input of described subtracter respectively; The output of described reference voltage generator is connected with the input of described subtracter; The output of described subtracter is connected with the input of described variable attenuator gain control module; The output of described voltage comparator is connected with the input of described emission/reception control circuit.
CN2009202932024U 2009-12-10 2009-12-10 Wireless communication network intelligent amplifier Expired - Fee Related CN201682496U (en)

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Application Number Priority Date Filing Date Title
CN2009202932024U CN201682496U (en) 2009-12-10 2009-12-10 Wireless communication network intelligent amplifier

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Application Number Priority Date Filing Date Title
CN2009202932024U CN201682496U (en) 2009-12-10 2009-12-10 Wireless communication network intelligent amplifier

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202974A (en) * 2017-06-23 2017-09-26 刘力上 A kind of position indicator and its localization method
CN112868193A (en) * 2018-10-04 2021-05-28 维尔塞特公司 Time Division Duplex (TDD) antenna system
CN116707556A (en) * 2023-08-02 2023-09-05 深圳飞骧科技股份有限公司 Module for adjusting transmitting power, radio frequency front end module and wireless transmitting equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107202974A (en) * 2017-06-23 2017-09-26 刘力上 A kind of position indicator and its localization method
CN112868193A (en) * 2018-10-04 2021-05-28 维尔塞特公司 Time Division Duplex (TDD) antenna system
CN112868193B (en) * 2018-10-04 2023-07-14 维尔塞特公司 Time Division Duplex (TDD) antenna system
CN116707556A (en) * 2023-08-02 2023-09-05 深圳飞骧科技股份有限公司 Module for adjusting transmitting power, radio frequency front end module and wireless transmitting equipment
CN116707556B (en) * 2023-08-02 2023-10-10 深圳飞骧科技股份有限公司 Module for adjusting transmitting power, radio frequency front end module and wireless transmitting equipment

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101222

Termination date: 20121210