CN202759448U - Tower mounted amplifier - Google Patents
Tower mounted amplifier Download PDFInfo
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- CN202759448U CN202759448U CN 201220265585 CN201220265585U CN202759448U CN 202759448 U CN202759448 U CN 202759448U CN 201220265585 CN201220265585 CN 201220265585 CN 201220265585 U CN201220265585 U CN 201220265585U CN 202759448 U CN202759448 U CN 202759448U
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Abstract
The utility model discloses a tower mounted amplifier. The tower mounted amplifier comprises that downlink signals which are sent by a base station and comprise control signals corresponding to the current control requirements are separated by a signal extractor to obtain the control signals and (RF) radio frequency signals; a modem receives the control signals, carries out modulation and demodulation, and sends the modulated and demodulated control signals to a central controller; the central controller generates corresponding control instructions for controlling an RF device and sends the control instructions to the RF device; the RF device carries out down regulation control on the RF signals and transmits the RF signals to a base station antenna through a first amplifier interface; and uplink signals sent by the base station antenna pass through the RF device and are fed to the base station through a second amplifier interface. In the tower mounted amplifier, the control signals are converted into the control instructions through the central controller so as to carry out adjusting control on the RF signals, so that the real-time control on the working state of the tower mounted amplifier is realized.
Description
Technical field
The utility model relates to the mobile communication technology field, particularly a kind of tower amplifier.
Background technology
Tower amplifier is mounted in top of tower near a low noise amplifier after the reception antenna, be signal can be amplified nearly 12dB before radiofrequency signal enters feeder line receiving upward signal, improve uplink signal quality, improve call reliability and voice quality, enlarge simultaneously the residential quarter area coverage.When the user is positioned at outside the cell coverage area, in the time of might call drop, it be very favourable adopting tower amplifier.
In the tower amplifier scheme of using now, at first need to be by direct current biasing device BT(Bias Tee) downstream signal that the base station is provided synthesizes, be transferred to cat head by feeder line, downstream signal comprises: radiofrequency signal, direct current supply signal, then by another one BT downstream signal is separated the tower amplifier work of supplying with, in such tower amplifier scheme, can't realize the real-time control to the tower amplifier operating state.
The utility model content
Problem to be solved in the utility model is: provide a kind of tower amplifier, to solve the problem that can't control in real time the operating state of tower amplifier in the prior art.
The utility model provides a kind of tower amplifier, comprising:
Receive the base station requires transmission according to current control downstream signal, and described downstream signal separated, obtain the dector of described control signal, RF radiofrequency signal and dc signal, wherein said downstream signal includes with described current control and requires corresponding control signal;
Link to each other with described dector, receive described control signal, and described control signal is carried out the modulator-demodulator of modulation /demodulation;
Link to each other with described modulator-demodulator, receive the control signal after the described modulation /demodulation, generate the first central controller of the control command of the control RF radio-frequency (RF) device corresponding with the control signal after the described modulation /demodulation;
Link to each other with described the first central controller, described RF radiofrequency signal is carried out the RF radio-frequency (RF) device of Attenuation adjustable according to described control command;
Link to each other with described dector with described RF radio-frequency (RF) device, described RF radiofrequency signal and described dc signal are presented the first amplifier interface to antenna for base station;
Described RF radio-frequency (RF) device receives the upward signal that antenna for base station sends;
Link to each other with described RF radio-frequency (RF) device, described upward signal is presented the second amplifier interface to the base station.
Preferably, described RF radio-frequency (RF) device comprises: the first cavity duplexer filter, balance amplifier number, controlling attenuation device, the second cavity duplexer filter, the 2nd RF radio frequency interface and a RF radio-frequency (RF) device interface;
Described the first cavity duplexer filter receives the up RF radiofrequency signal that antenna for base station sends, and described up RF radiofrequency signal carried out filtering, and described the first cavity duplexer filter receives by the isolated descending RF radiofrequency signal of described dector through the filtered descending RF radiofrequency signal of the second cavity body filter, and carries out filtering;
Up RF radiofrequency signal after described balance amplifier is used for accepting filter is also amplified, and the up RF radiofrequency signal after amplifying is sent to numerical-control attenuator;
Up RF radiofrequency signal after described numerical-control attenuator is used for amplifying is carried out Attenuation adjustable, will send to the second cavity duplexer filter through the up RF radiofrequency signal behind the Attenuation adjustable again;
Described the second cavity duplexer filter is used for described filtered up RF radiofrequency signal is presented to the second amplifier interface by the 2nd RF radio frequency interface, in addition, described the second cavity duplexer filter has carried out filtering for receiving by the isolated descending RF radiofrequency signal of described dector and to described descending RF radiofrequency signal.
Preferably, be connected to the input of described balance amplifier and the output of described numerical-control attenuator, when balance amplifier or numerical-control attenuator breaks down or during power down, provide the multithrow switch in conducting loop for up RF radiofrequency signal.
Preferably, described tower amplifier also comprises:
Link to each other with described modulator-demodulator, receive the control signal after the described modulation /demodulation, obtain the second central controller of the control command of the control AISG protocol converter corresponding with the control signal after the described modulation /demodulation;
Link to each other the described control command of foundation is carried out protocol conversion to described control signal AISG protocol converter with described the second central controller;
Link to each other with described AISG protocol converter, the control signal after the described protocol conversion is presented AISG protocol converter interface to the first amplifier interface.
Preferably, described tower amplifier also comprises:
Link to each other with described central controller with described modulator-demodulator, described RF radio-frequency (RF) device, and the power supply of powering.
Preferably, described power supply comprises:
Receive the signaling interface of described direct current signal;
The voltage conversion circuit that described DC information is changed;
Voltage after the described conversion is flowed to the Voltage-output port of described modulator-demodulator, described RF radio-frequency (RF) device and described central controller.
As can be seen from the above technical solutions, in the utility model, a kind of tower amplifier is provided, to include the dector that described current control requires the downstream signal of corresponding control signal to separate, obtain described control signal, RF radiofrequency signal and dc signal, the modulator-demodulator of reception control signal links to each other with described dector, to send to described central controller after the described control signal modulation /demodulation, generate the control command of the control RF radio-frequency (RF) device corresponding with described control signal, described control command is sent to described RF radio-frequency (RF) device, described RF radio-frequency (RF) device according to described control command to the control that decays of described RF radiofrequency signal, thereby reach the purpose of ride gain, again radiofrequency signal and described dc signal are presented to antenna for base station by the first amplifier interface, described power supply and described modulator-demodulator, described RF radio-frequency (RF) device links to each other with described central controller, and power, in this scheme, through described central controller described radiofrequency signal is carried out gain control through the control signal after the modulation /demodulation, realized the real-time control to the operating state of tower amplifier.
Description of drawings
Fig. 1 is the structural representation of embodiment one disclosed a kind of tower amplifier;
Fig. 2 is RF radio-frequency (RF) device internal circuit configuration schematic diagram in embodiment one disclosed a kind of tower amplifier;
Fig. 3 is the structural representation of embodiment two disclosed a kind of tower amplifiers;
Fig. 4 is that a kind of tower amplifier is applied to the structural representation in the antenna-feedback system of multitower top amplifier, many antenna interconnect.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills belong to protection range of the present utility model not making the every other embodiment that obtains under the creative work prerequisite.
Among the utility model embodiment one disclosed tower amplifier structure as shown in Figure 1, described a kind of tower amplifier comprises: dector 101, modulator-demodulator 102, the first central controller 103, RF radio-frequency (RF) device 104, power supply 105, the first amplifier interface 106 and the second amplifier interface 107;
Described dector 101 is used for receiving the base station requires transmission according to current control downstream signal, and described downstream signal separated, obtain described control signal, RF radiofrequency signal and dc signal, wherein said downstream signal includes with described current control and requires corresponding control signal;
What link to each other with described dector is modulator-demodulator 102, and described modulator-demodulator 102 is used for receiving described control signal, and described control signal is carried out modulation /demodulation;
What link to each other with described modulator-demodulator 102 is the first central controller 103, described the first central controller 103 is used for receiving the control signal after the described modulation /demodulation, and the control command of the generation control RF radio-frequency (RF) device 104 corresponding with the control signal after the described modulation /demodulation;
What link to each other with described the first central controller 103 is RF radio-frequency (RF) device 104, described RF radio-frequency (RF) device 104 links to each other with described dector 101, described RF radio-frequency (RF) device 104 is used for according to described control command described RF radiofrequency signal being carried out Attenuation adjustable, and the RF radiofrequency signal that receives is presented to antenna for base station by the first amplifier interface 106;
Described modulator-demodulator 102, described the first central controller 103 and described RF radio-frequency (RF) device 104 link to each other with described power supply 105, and are powered by described power supply 105;
Wherein, separating a described dc signal part that obtains is presented to antenna for base station by the first amplifier interface 106, directly power to antenna for base station, described power supply 105 can pass through voltage conversion circuit by the isolated dc signal of another part, obtain adapting to and described modulator-demodulator 102, the voltage of described the first central controller 103 and described RF radio-frequency (RF) device 104, can reduce like this for the difficulty of construction that external power is set, reduce project budget, certainly according to practical situations, also can come to be described modulator-demodulator 102 with external power, described the first central controller 103 and 104 power supplies of described RF radio-frequency (RF) device.
The upward signal that described RF radio-frequency (RF) device 104 receives the antenna for base station transmission is the RF radiofrequency signal, and described RF radiofrequency signal is presented to the base station by the second amplifier interface 107.
Wherein, described RF radio-frequency (RF) device internal circuit diagram as shown in Figure 2, described RF radio-frequency (RF) device comprises: the first cavity duplexer filter 201, balance amplifier 202, numerical-control attenuator 203, the second cavity duplexer filter 204, the 2nd RF radio frequency interface 205 and a RF radio-frequency (RF) device interface 206;
Described the first cavity duplexer filter 201 receives the up RF radiofrequency signal that antenna for base station sends, and described up RF radiofrequency signal carried out filtering, in addition, described the first cavity duplexer filter 201 receives by described dector 101 isolated descending RF radiofrequency signals through the second cavity body filter 204 filtered descending RF radiofrequency signals, and carries out filtering;
Up RF radiofrequency signal after described balance amplifier 202 is used for accepting filter is also amplified, and the up RF radiofrequency signal after amplifying is sent to numerical-control attenuator 203;
Up RF radiofrequency signal after described numerical-control attenuator 203 is used for amplifying is carried out Attenuation adjustable, will send to the second cavity duplexer filter 204 through the up RF radiofrequency signal behind the Attenuation adjustable again;
Described the second cavity duplexer filter 204 is used for described filtered up RF radiofrequency signal is presented to the second amplifier interface 107 by the 2nd RF radio frequency interface 205, in addition, described the second cavity duplexer filter 204 has carried out filtering for receiving by the isolated descending RF radiofrequency signal of described dector and to described descending RF radiofrequency signal.
In above-described embodiment, described dector will receive the base station requires transmission according to current control the downstream signal that current control requires corresponding control signal that includes, and downstream signal separated, obtain described control signal, RF radiofrequency signal and dc signal, described modulator-demodulator receives described control signal, and carry out modulation /demodulation, control signal after the debugging demodulation is sent to central controller, the control signal of described central controller after with described debugging demodulation, and the control command of the generation control RF radio-frequency (RF) device corresponding with the control signal after the described debugging demodulation, described control command is sent to described RF radio-frequency (RF) device, described radio-frequency (RF) device is carried out Attenuation adjustable according to described control command to described RF radiofrequency signal, radiofrequency signal after regulating is presented to antenna for base station by the first amplifier interface, in this scheme, by the control signal after the modulation /demodulation through described central controller to the control that gains of described radiofrequency signal, realized the control to the operating state of tower amplifier.
On the basis of above-described embodiment, among the utility model embodiment two disclosed tower amplifier structure as shown in Figure 3, described tower amplifier also comprises: AISG protocol converter 108, AISG protocol converter first interface 109 and the second central controller;
Wherein, the function of the first central controller 103 in described the second central controller and above-described embodiment can be finished by central controller 110, perhaps respectively by two independently central processing unit finish respectively.
Described central controller 110 links to each other with described modulator-demodulator 102, described central controller 110 has received the control signal after described modulator-demodulator 102 modulation /demodulation, obtains the control command of the control AISG protocol converter 108 corresponding with the control signal after the described modulation /demodulation;
Described AISG protocol converter 108 links to each other with described central controller 110, described AISG protocol converter 108, and is presented the control signal after the described protocol conversion to the first amplifier interface 106 by AISG protocol converter first interface 109 described control signal protocol conversion according to described control command.
Wherein, the described control command of described control signal foundation is after the AISG protocol converter converts, present to the first amplifier interface 106 by AISG protocol converter first interface 109, described the first amplifier interface links to each other with antenna for base station, thereby can control the gain of antenna for base station through the control signal after the protocol conversion, obtain thus, add described AISG protocol converter and can increase the input type of control command, in addition, described AISG protocol converter can by linking to each other with the input port of the AISG protocol converter of antenna control unit of electromic tuning, realize controlling a plurality of antennas and a plurality of tower amplifier.
In above-described embodiment, increase described AISG protocol converter, after the process of the control signal after described modulation /demodulation AISG protocol conversion, generated the control signal that is suitable for the feeder line transmission, can increase like this input type of control signal, improve the scope of application of this tower amplifier.
In actual applications, this kind tower amplifier can be applied in the antenna-feedback system of multitower top amplifier, many antenna interconnect, and described antenna-feedback system mainly comprises antenna and feeder system two large classes.
The antenna-feedback system that the utility model is used except antenna and feeder line, comprises two identical tower amplifiers 301 and 302, intelligent loop 303 and antenna control unit of electromic tuning 304 referring to shown in Figure 4 at least;
The described intelligent loop 303 synthetic downstream signals that require corresponding control signal with control that include;
Described control requires to comprise: the signal of the signal of control antenna gain and the many antenna interconnect of control;
Described tower amplifier 301 links to each other with described intelligent loop 303, behind the described tower amplifier 301 of described downstream signal process, and the control command of the many antenna interconnect of control after the RF radiofrequency signal after obtaining processing, dc signal and the process AISG protocol conversion;
RF radiofrequency signal after the described processing is presented to antenna for base station through the first amplifier interface 106;
A described dc signal part is presented to antenna for base station by the first amplifier interface 106;
Described dc signal another part and described control command are presented to antenna control unit of electromic tuning 304 by AISG protocol converter first interface and are presented to AISG protocol converter the second interface in the tower amplifier 302 by described antenna control unit of electromic tuning 304, through being presented to next antenna control unit of electromic tuning by the first interface of second AISG protocol converter behind the AISG protocol converter;
Circulate successively, realized the antenna-feedback system of a plurality of tower amplifiers, many antenna interconnect.
In above-described embodiment, just provided the specific embodiment of 2 tower amplifiers, in practical operation, can include some tower amplifiers and intelligent loop, connected mode is the same.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the disclosed method of embodiment, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment is apparent to those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wide region consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a tower amplifier is characterized in that, comprising:
Receive the base station requires transmission according to current control downstream signal, and described downstream signal separated, obtain the dector of described control signal, RF radiofrequency signal and dc signal, wherein said downstream signal includes with described current control and requires corresponding control signal;
Link to each other with described dector, receive described control signal, and described control signal is carried out the modulator-demodulator of modulation /demodulation;
Link to each other with described modulator-demodulator, receive the control signal after the described modulation /demodulation, generate the first central controller of the control command of the control RF radio-frequency (RF) device corresponding with the control signal after the described modulation /demodulation;
Link to each other with described the first central controller, described RF radiofrequency signal is carried out the RF radio-frequency (RF) device of Attenuation adjustable according to described control command;
Link to each other with described dector with described RF radio-frequency (RF) device, described RF radiofrequency signal and described dc signal are presented the first amplifier interface to antenna for base station;
Described RF radio-frequency (RF) device receives the upward signal that antenna for base station sends;
Link to each other with described RF radio-frequency (RF) device, described upward signal is presented the second amplifier interface to the base station.
2. tower amplifier according to claim 1, it is characterized in that described RF radio-frequency (RF) device comprises: the first cavity duplexer filter, balance amplifier, numerical-control attenuator, the second cavity duplexer filter, the 2nd RF radio frequency interface and a RF radio-frequency (RF) device interface;
Described the first cavity duplexer filter is used for receiving the up RF radiofrequency signal that antenna for base station sends, and described up RF radiofrequency signal carried out filtering, and described the first cavity duplexer filter receives by the isolated descending RF radiofrequency signal of described dector through the filtered descending RF radiofrequency signal of the second cavity body filter, and carries out filtering;
Up RF radiofrequency signal after described balance amplifier is used for accepting filter is also amplified, and the up RF radiofrequency signal after amplifying is sent to numerical-control attenuator;
Up RF radiofrequency signal after described numerical-control attenuator is used for amplifying is carried out Attenuation adjustable, will send to the second cavity duplexer filter through the up RF radiofrequency signal behind the Attenuation adjustable again;
Described the second cavity duplexer filter is used for described filtered up RF radiofrequency signal is presented to the second amplifier interface by the 2nd RF radio frequency interface, in addition, described the second cavity duplexer filter has carried out filtering for receiving by the isolated descending RF radiofrequency signal of described dector and to described descending RF radiofrequency signal.
3. tower amplifier according to claim 2, it is characterized in that, be connected to the input of described balance amplifier and the output of described numerical-control attenuator, when balance amplifier or numerical-control attenuator breaks down or during power down, provide the multithrow switch in conducting loop for up RF radiofrequency signal.
4. tower amplifier according to claim 1 is characterized in that, described tower amplifier also comprises:
Link to each other with described modulator-demodulator, receive the control signal after the described modulation /demodulation, obtain the second central controller of the control command of the control AISG protocol converter corresponding with the control signal after the described modulation /demodulation;
Link to each other the described control command of foundation is carried out protocol conversion to described control signal AISG protocol converter with described the second central controller;
Link to each other with described AISG protocol converter, the control signal after the described protocol conversion is presented AISG protocol converter interface to the first amplifier interface.
5. tower amplifier according to claim 1 is characterized in that, described tower amplifier also comprises:
Link to each other with described central controller with described modulator-demodulator, described RF radio-frequency (RF) device, and the power supply of powering.
6. tower amplifier according to claim 5 is characterized in that, described power supply comprises:
Receive the signaling interface of described direct current signal;
The voltage conversion circuit that described DC information is changed;
Voltage after the described conversion is flowed to the Voltage-output port of described modulator-demodulator, described RF radio-frequency (RF) device and described central controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265585 CN202759448U (en) | 2012-06-06 | 2012-06-06 | Tower mounted amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265585 CN202759448U (en) | 2012-06-06 | 2012-06-06 | Tower mounted amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202759448U true CN202759448U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220265585 Expired - Fee Related CN202759448U (en) | 2012-06-06 | 2012-06-06 | Tower mounted amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202759448U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031297A (en) * | 2014-02-21 | 2016-10-12 | 康普技术有限责任公司 | Input selective smart bias tee |
-
2012
- 2012-06-06 CN CN 201220265585 patent/CN202759448U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031297A (en) * | 2014-02-21 | 2016-10-12 | 康普技术有限责任公司 | Input selective smart bias tee |
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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: 20130227 Termination date: 20180606 |
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| CF01 | Termination of patent right due to non-payment of annual fee |