CN102916708A - Power adjustment device of radio emitter and radio emitter - Google Patents
Power adjustment device of radio emitter and radio emitter Download PDFInfo
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- CN102916708A CN102916708A CN2012104009608A CN201210400960A CN102916708A CN 102916708 A CN102916708 A CN 102916708A CN 2012104009608 A CN2012104009608 A CN 2012104009608A CN 201210400960 A CN201210400960 A CN 201210400960A CN 102916708 A CN102916708 A CN 102916708A
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Abstract
The embodiment of the invention discloses a power adjustment device of a radio emitter and the radio emitter. The power adjustment device of the radio emitter comprises a control unit, an input numerical control attenuation unit connected with the control unit, an output numerical control attenuation unit connected with the control unit and a power coupling and sampling unit connected with the control unit, wherein the control unit adjusts an attenuation amount of the input numerical control attenuation unit or adjusts an attenuation amount of the input numerical control attenuation unit and the attenuation amount of the output numerical control attenuation unit according to output power and reflection power until the power coupling and sampling unit detects that the output power of a power amplifier meets an output power preset value. By adopting the power adjustment device of the radio emitter and the radio emitter, the power amplifier can automatically and safely reach the output power preset value, and operation and maintenance of equipment are simplified.
Description
Technical field
The embodiment of the invention relates to technical field of radio, relates in particular to a kind of power adjustment apparatus and radio transmitter of radio transmitter.
Background technology
After device power-up the power adjustment of existing radio frequency interference equipment (such as radio transmitter), in the change interference waveform, the radio frequency input and output attenuation parameter that needs each frequency range of operating personnel's manual adjustments, then open power amplifier, again according to the power output indicated value of power amplifier, regulate step by step attenuation parameter, until the power output of power amplifier reaches desired level, in this process, also need constantly to monitor reflection power, with the power output of regulating power amplifier.
Because equipment generally has a lot of frequency ranges, when then changing interference waveform, the power adjusting operation is safeguarded and is wasted time and energy, and also can damage power amplifier in case operate miss occurs at every turn.And, needing veteran operating personnel, maintenance cost is high.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of power adjustment apparatus and radio transmitter, simplifying operation of equipment and maintenance of radio transmitter.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
A kind of power adjustment apparatus of radio transmitter, the input numerical control attenuation units that comprise control unit, is connected with described control unit, the output numerical control attenuation units that is connected with described control unit and the power coupling sampling unit that is connected with described control unit:
Described input numerical control attenuation units is used for the first signal that the receiving baseband signal source sends, and obtain secondary signal by the level that the attenuation that described control unit is controlled described input numerical control attenuation units is adjusted described first signal, described secondary signal is transferred to frequency converter, obtains the 3rd signal and transmit described the 3rd signal to described output numerical control attenuation units so that described frequency converter carries out up-conversion to described secondary signal;
Described output numerical control attenuation units is used for receiving described the 3rd signal of described frequency converter transmission, and obtain the 4th signal by the level that the attenuation that described control unit is controlled described output numerical control attenuation units is adjusted described the 3rd signal, described the 4th signal is transferred to power amplifier, so that described power amplifier carries out power amplification to described the 4th signal and exports to described power coupling sampling unit;
Described power coupling sampling unit is for detection of power output and the reflection power of described power amplifier, and the described power output that will detect and described reflection power are transferred to described control unit;
Described control unit is used for according to power output predetermined value, reflection power threshold value and described power output and described reflection power, control the attenuation of described output numerical control attenuation units, perhaps control the attenuation of described input numerical control attenuation units and the attenuation of described output numerical control attenuation units, reach described power output predetermined value until described power coupling sampling unit detects the power output of described power amplifier.
A kind of radio transmitter comprises the power adjustment apparatus of above-mentioned radio transmitter.
Can be found out by the technical scheme that the invention described above embodiment provides, control unit is according to power output predetermined value, reflection power threshold value and power output and reflection power, the attenuation of control output numerical control attenuation units, the perhaps attenuation of the attenuation of control inputs numerical control attenuation units and output numerical control attenuation units, automatically realize that power amplifier reaches the power output predetermined value safely, has simplified the operation and maintenance of equipment.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The formation schematic diagram of the power adjustment apparatus of the radio transmitter that Fig. 1 provides for the embodiment of the invention.
The formation schematic diagram of the radio transmitter that Fig. 2 provides for the embodiment of the invention.
Formation schematic diagram under the power adjustment apparatus application scenarios of the radio transmitter that Fig. 3 provides for the embodiment of the invention.
Formation schematic diagram under the power adjustment apparatus application scenarios of the radio transmitter that Fig. 4 provides for the embodiment of the invention.
The application flow schematic diagram of the power adjustment apparatus of the radio transmitter that Fig. 5 provides for the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that obtains under the creative work prerequisite.
As shown in Figure 1, the embodiment of the invention provides a kind of power adjustment apparatus of radio transmitter, the input numerical control attenuation units 12 that comprise control unit 11, is connected with control unit 11, the output numerical control attenuation units 13 that is connected with control unit 11 and the power coupling sampling unit 14 that is connected with control unit 11:
Input numerical control attenuation units 12 is used for the first signal that the receiving baseband signal source sends, and obtain secondary signal by the level that the attenuation of control unit 11 control inputs numerical control attenuation units 12 is adjusted described first signal, described secondary signal is transferred to frequency converter, obtains the 3rd signal and transmit described the 3rd signal to output numerical control attenuation units 13 so that described frequency converter carries out up-conversion to described secondary signal;
Output numerical control attenuation units 13 is used for receiving described the 3rd signal of described frequency converter transmission, and obtain the 4th signal by the level that the attenuation of control unit 11 control output numerical control attenuation units 13 is adjusted described the 3rd signal, described the 4th signal is transferred to power amplifier, so that described power amplifier carries out power amplification to described the 4th signal and exports to power coupling sampling unit 14;
Power coupling sampling unit 14 is for detection of power output and the reflection power of described power amplifier, and the described power output that will detect and described reflection power are transferred to control unit 11;
As seen from the above technical solution provided by the invention, control unit is according to power output and reflection power, adjust the attenuation of input numerical control attenuation units and/or the attenuation of output numerical control attenuation units, automatically realize that power amplifier reaches the power output predetermined value safely, simplify the operation and maintenance of equipment, avoided manual safeguard expensive of operating personnel.
Wherein, the signal of base band sources transmission is intermediate-freuqncy signal.Radio transmitter is as radio frequency interference equipment, and the signal that base band sources sends can be thought interference signal.
Wherein, the level unit of signal is the dB(decibel).
Wherein, the power output predetermined value of power amplifier can be the specified peak power output value of power amplifier, the specified peak power output value that it will be understood by those skilled in the art that power amplifier is that the device of power amplifier own determines, does not do at this and gives unnecessary details.The reflection power threshold value can be 10% of the specified peak power output value of power amplifier, but is not limited to 10%, and the reflection power threshold value can be adjusted according to concrete needs.
Can set in advance power output predetermined value and the reflection power threshold value of power amplifier, so that control unit is according to power output predetermined value, reflection power threshold value and power output and reflection power, the attenuation of control output numerical control attenuation units, the perhaps attenuation of the attenuation of control inputs numerical control attenuation units and output numerical control attenuation units.
Wherein, control unit 11 also can be understood as controller, input numerical control attenuation units 12 also can be understood as the input numerical-control attenuator, and output numerical control attenuation units 13 also can be understood as the output numerical-control attenuator, and power coupling sampling unit 14 also can be understood as power coupling sampling module.
Wherein, power coupling sampling unit 14 can comprise coupler module and wave detector module, and power coupling sampling unit specifically can be understood referring to prior art, and therefore not to repeat here.
Particularly, control unit 11 specifically can be used for: the attenuation that the attenuation of control output numerical control attenuation units 12 is initially maximum attenuation amount and control inputs numerical control attenuation units 13 is initially the maximum attenuation amount, according to described reflection power less than described reflection power threshold value and described power output less than described power output predetermined value, then the attenuation of output numerical control attenuation units 13 is turned in stepping down, until described power output reaches described power output predetermined value, wherein, step value is the 1dB(decibel) or 0.5dB;
Turning down when the attenuation of output numerical control attenuation units 13 is 0, when the power output that power coupling sampling unit 14 detects described power amplifier does not reach described power output predetermined value, then the attenuation of input numerical control attenuation units 12 is turned in stepping down, until described power output reaches described power output predetermined value, wherein, step value is 1dB or 0.5dB.
Wherein, the maximum attenuation amount is determined by device itself, generally adopts the attenuator of 31.5dB, and namely the maximum attenuation amount of described output numerical control attenuation units is 31.5dB, and the maximum attenuation amount of described input numerical control attenuation units is 31.5dB.
Particularly, control unit 11 can also be connected with power amplifier, and control unit 11 also specifically can be used for: equal described reflection power according to described power output, send alarm indication and control and close described power amplifier.
Wherein, the power output of power amplifier equals reflection power, and the power output and the reflection power that can be understood as power amplifier are almost equal.Namely, if the power output of power amplifier and reflection power are almost equal, illustrate that then power amplifier output antenna does not connect (perhaps antenna mismatch), need so to stop the power output of Modulating Power amplifier, as close power amplifier, and sending the alarm indication, the prompting antenna does not connect (perhaps antenna mismatch).
Perhaps, control unit 11 also specifically can be used for: equal described reflection power threshold value according to described reflection power, send alarm indication and control and close described power amplifier.
Namely, reflection power is crossed conference burns out power amplifier, burns out in order to prevent power amplifier, equals the reflection power threshold value according to reflection power, sends alarm indication and control and closes power amplifier.
Perhaps, control unit 11 also specifically can be used for: according to the attenuation of output numerical control attenuation units 13 be 0 and the attenuation of input numerical control attenuation units 12 be 0 o'clock, described power output does not reach described power output predetermined value, sends alarm indication and control and closes described power amplifier.
Namely, if input numerical control attenuation units and output numerical-control attenuator unit are transferred to 0, but power amplifier output power can't reach the peak power output value, then control unit sends the alarm indication, prompting may baseband signal power output too little or do not have, perhaps the amplifier module of frequency converter has fault, and the signal power that causes frequency converter to output to power amplifier diminishes, and causes the power that power amplifier can not withdraw to be needed.
Optionally, control unit 11 can connect alarm unit (such as buzzer, LED lamp), and control unit 11 is controlled buzzer by the output high-low level and sent buzzing, LED blinking red lamp, and prompting is reported to the police, and does not do at this and gives unnecessary details.Wherein, different alarm condition can corresponding different LED, distinguishes realizing.
The power adjustment apparatus of embodiment radio transmitter for a better understanding of the present invention, the base band sources that relates to, frequency converter and power amplifier can be done following understanding: the base band sources transmitted signal; Frequency converter carries out the frequency conversion adjustment to the received signal, comprises up-conversion or down-conversion, and up-conversion is the 40-240MHz(megahertz such as the frequency of the signal that receives), be 800-1000MHz by output frequency behind the frequency converter; Power amplifier carries out power amplification to the received signal, and can pass through antenna transmission.Correlation technique specifically can be understood referring to prior art, and therefore not to repeat here.
The power adjustment apparatus of radio transmitter of the present invention, behind start and the change interference waveform, the power output of automatic power adjustment amplifier, can prevent simultaneously because the power amplifier that antenna does not connect or antenna mismatch causes damages, simplify the operation and maintenance of jamming equipment, reduced maintenance cost.
As shown in Figure 2, the embodiment of the invention provides a kind of radio transmitter 21, comprises the power adjustment apparatus 22 of the radio transmitter of above-described embodiment.
Further, embodiment of the invention radio transmitter can also comprise frequency converter and power amplifier.
Optionally, embodiment of the invention radio transmitter can also comprise base band sources.
As shown in Figure 3, radio transmitter comprises power adjustment apparatus, base band sources 31, frequency converter 32 and the power amplifier 33 of radio transmitter.Further, the power adjustment apparatus of radio transmitter comprises control unit 34, input numerical control attenuation units 35, output numerical control attenuation units 36 and power coupling sampling unit 37.
Concrete, base band sources 31 connects input numerical control attenuation units 35, input numerical control attenuation units 35 and be connected numerical control attenuation units 36 connection frequency converters 32, the output numerical control attenuation units 36 sampling unit 37 connection power amplifiers 33 that be connecteds with power, power amplifier 33 connects antenna (ANT), and control unit 11 connects power amplifier 33.
Perhaps, to input the numerical control attenuation units and export the numerical control attenuation units and be put into the frequency converter the inside, the power sampling unit function that is coupled is integrated into power amplifier the inside, control module arranges input and output numerical control attenuation units in the frequency converter by communication interface, obtains power output and the reflection power of power amplifier by control interface.Namely as shown in Figure 4, base band sources 41 connects frequency converter 42, input numerical control attenuation units and output numerical control attenuation units and frequency converter 42 are arranged at one, frequency converter 42 connects power amplifier 43, power coupling sampling unit and power amplifier 43 are arranged at one, power amplifier 43 connects antenna (ANT), and control unit 44 connects power amplifier 43.
As shown in Figure 5, how the power adjustment apparatus that embodiment of the invention radio transmitter is described realizes the power output adjustment of power amplifier:
When radio transmitter was opened, the switch of power amplifier acquiescence was closed.
51, control unit output numerical control attenuation units is set to maximum.
The attenuation of control unit output numerical control attenuation units is set to maximum.
52, control unit input numerical control attenuation units is set to maximum.
The attenuation of control unit input numerical control attenuation units is set to maximum.
Step 51 and 52 does not have strict sequence requirement.
53, control unit is opened the switch of power amplifier.
Control unit is opened the switch of power amplifier.
54, control unit judges whether output numerical control attenuation units is reduced to minimum value.
Control unit judges whether the attenuation of output numerical control attenuation units is minimum value, such as 0, if so, then enters 510, if not, then enters 55.
55, the control unit stepping reduces to export the value of numerical control attenuation units.
The control unit stepping reduces to export the attenuation of numerical control attenuation units, and step value is 1dB.
56, control unit obtains the power amplifier parameter.
Control unit obtains power output and the reflection power of power amplifier by power coupling sampling unit.
57, control unit judges that whether reflection power is greater than safety value.
Control unit judges that reflection power whether greater than (comprise and equaling) reflection power threshold value (being safety value), if so, then enters 59, if not, then enters 58.
58, control unit judges whether power output reaches preset value.
Control unit judges whether power output (also can be called transmitting power) reaches power output preset value (such as the specified peak power output value of power amplifier), if so, then adjusts and finishes, and if not, then enters 54.
59, power amplifier is closed in control unit control, and sends the alarm indication.
510, control unit judges whether input numerical control attenuation units is reduced to minimum value.
Control unit judges whether the attenuation of input numerical control attenuation units is minimum value, such as 0, if so, then enters 512, if not, then enters 511.
511, the control unit stepping reduces to input the value of numerical control attenuation units.
The control unit stepping reduces the attenuation of defeated number controlling attenuation unit, and step value is 1dB.
After 511, also enter 56 control units and obtain the power amplifier parameter.
512, control unit obtains the power amplifier parameter.
Control unit obtains power output and the reflection power of power amplifier by power coupling sampling unit.
513, control unit judges that whether reflection power is greater than safety value.
Control unit judges that reflection power whether greater than (comprise and equaling) reflection power threshold value, if so, then enters 59, if not, then enters 514.
514, control unit judges whether power output reaches preset value.
Control unit judges whether power output reaches power output preset value (such as the specified peak power output value of power amplifier), if so, then adjusts and finishes, and if not, then enters 59.
As seen, when radio transmitter is opened, the switch acquiescence of power amplifier is closed, the attenuation that the MCU of control unit at first inputs numerical control attenuation units and output numerical control attenuation units is set to maximum, then open power amplifier output, obtain power output and the reflection power of power amplifier by power coupling sampling module.At first reduce to export the attenuation of numerical control attenuation units, the power output of readout power amplifier and reflection power if the almost equal explanation power amplifier output of power output and reflection power antenna does not connect, stop Modulating Power, close power amplifier, send the alarm indication.If there is not total reflection, see first the reflection power value, if reflection power reaches or exceeds safety value, stop to adjust, send the alarm indication, if reflection power does not exceed safety value, see whether power output reaches maximum power output, if do not reach, continue to reduce to export the attenuation of numerical control attenuation units, so repeatedly, until reach the maximum power output of power amplifier, if the attenuation of output numerical control attenuation units is transferred to minimum value, can't reach the maximum power output of power amplifier, begin to adjust the attenuation of input numerical control attenuation units, repeat this process, until the power output of power amplifier reaches maximum.If the attenuation of input numerical control attenuation units and output numerical control attenuation units is transferred to minimum, power amplifier output power can't reach peak power output, then prompting may baseband signal power output too little or do not have, perhaps the amplifier module of frequency converter has fault, provides corresponding alarm indication.
The power adjustment apparatus of radio transmitter of the present invention, behind start and the change interference waveform, the power output of automatic power adjustment amplifier, can prevent simultaneously because the power amplifier that antenna does not connect or antenna mismatch causes damages, simplify the operation and maintenance of jamming equipment, reduced maintenance cost.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, to come the relevant hardware of instruction to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process such as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Claims (9)
1. the power adjustment apparatus of a radio transmitter, it is characterized in that the input numerical control attenuation units that comprise control unit, is connected with described control unit, the output numerical control attenuation units that is connected with described control unit and the power coupling sampling unit that is connected with described control unit:
Described input numerical control attenuation units is used for the first signal that the receiving baseband signal source sends, and obtain secondary signal by the level that the attenuation that described control unit is controlled described input numerical control attenuation units is adjusted described first signal, described secondary signal is transferred to frequency converter, obtains the 3rd signal and transmit described the 3rd signal to described output numerical control attenuation units so that described frequency converter carries out up-conversion to described secondary signal;
Described output numerical control attenuation units is used for receiving described the 3rd signal of described frequency converter transmission, and obtain the 4th signal by the level that the attenuation that described control unit is controlled described output numerical control attenuation units is adjusted described the 3rd signal, described the 4th signal is transferred to power amplifier, so that described power amplifier carries out power amplification to described the 4th signal and exports to described power coupling sampling unit;
Described power coupling sampling unit is for detection of power output and the reflection power of described power amplifier, and the described power output that will detect and described reflection power are transferred to described control unit;
Described control unit is used for according to power output predetermined value, reflection power threshold value and described power output and described reflection power, control the attenuation of described output numerical control attenuation units, perhaps control the attenuation of described input numerical control attenuation units and the attenuation of described output numerical control attenuation units, reach described power output predetermined value until described power coupling sampling unit detects the power output of described power amplifier.
2. adjusting device according to claim 1, it is characterized in that, described control unit specifically is used for: the attenuation that the attenuation of controlling described output numerical control attenuation units is initially the maximum attenuation amount and controls described input numerical control attenuation units is initially the maximum attenuation amount, according to described reflection power less than described reflection power threshold value and described power output less than described power output predetermined value, then the attenuation of described output numerical control attenuation units is turned in stepping down, until described power output reaches described power output predetermined value, wherein, step value is 1dB or 0.5dB;
Turning down when the attenuation of described output numerical control attenuation units is 0, when the power output that described power coupling sampling unit detects described power amplifier does not reach described power output predetermined value, then the attenuation of described input numerical control attenuation units is turned in stepping down, until described power output reaches described power output predetermined value, wherein, step value is 1dB or 0.5dB.
3. adjusting device according to claim 2, it is characterized in that, described control unit is connected with described power amplifier, and described control unit also specifically is used for: equal described reflection power according to described power output, send alarm indication and control and close described power amplifier;
Perhaps, equal described reflection power threshold value according to described reflection power, send alarm indication and control and close described power amplifier;
Perhaps, according to the attenuation of described output numerical control attenuation units be 0 and the attenuation of described input numerical control attenuation units be 0 o'clock, described power output does not reach described power output predetermined value, sends alarm indication and control and closes described power amplifier.
4. adjusting device according to claim 1 is characterized in that, described power output predetermined value is the specified peak power output value of described power amplifier, described reflection power threshold value be described power amplifier specified peak power output value 10%.
5. adjusting device according to claim 1 is characterized in that, described first signal is intermediate-freuqncy signal.
6. adjusting device according to claim 1 is characterized in that, described control unit comprises microcontroller.
7. adjusting device according to claim 1 is characterized in that, described power coupling sampling unit comprises coupler module and wave detector module.
8. a radio transmitter is characterized in that, comprises the power adjustment apparatus such as arbitrary described radio transmitter among the claim 1-7.
9. radio transmitter according to claim 8 is characterized in that, also comprises frequency converter and power amplifier:
Described input numerical control attenuation units be connected output numerical control attenuation units and connect described frequency converter, described output numerical control attenuation units be connected power coupling sampling unit and connect described power amplifier, described control unit connects described power amplifier;
Perhaps, described input numerical control attenuation units and described output numerical control attenuation units and described frequency converter are arranged at one, and described power coupling sampling unit and described power amplifier are arranged at one, and described control unit connects described power amplifier.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210400960.8A CN102916708B (en) | 2012-10-19 | 2012-10-19 | Power adjustment device of radio emitter and radio emitter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210400960.8A CN102916708B (en) | 2012-10-19 | 2012-10-19 | Power adjustment device of radio emitter and radio emitter |
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| CN102916708A true CN102916708A (en) | 2013-02-06 |
| CN102916708B CN102916708B (en) | 2014-11-26 |
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| CN201210400960.8A Active CN102916708B (en) | 2012-10-19 | 2012-10-19 | Power adjustment device of radio emitter and radio emitter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109462382A (en) * | 2018-10-26 | 2019-03-12 | 京信通信系统（中国）有限公司 | Power amplifying system, power investigating method, device and base station equipment |
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| CN109462382A (en) * | 2018-10-26 | 2019-03-12 | 京信通信系统（中国）有限公司 | Power amplifying system, power investigating method, device and base station equipment |
| CN109462382B (en) * | 2018-10-26 | 2022-07-29 | 京信网络系统股份有限公司 | Power amplification system, power measurement and control method, device and base station equipment |
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| CN102916708B (en) | 2014-11-26 |
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Denomination of invention: Power adjustment device of radio emitter and radio emitter Effective date of registration: 20150120 Granted publication date: 20141126 Pledgee: Industrial Commercial Bank of China Ltd Zhongguancun Beijing branch Pledgor: Zhongke Feihong Science and Technology Co., Ltd., Beijing Registration number: 2015990000050 |
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