CN107508644A - A kind of feedback channel on-line calibration method and its device - Google Patents

A kind of feedback channel on-line calibration method and its device Download PDF

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Publication number
CN107508644A
CN107508644A CN201610416867.4A CN201610416867A CN107508644A CN 107508644 A CN107508644 A CN 107508644A CN 201610416867 A CN201610416867 A CN 201610416867A CN 107508644 A CN107508644 A CN 107508644A
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China
Prior art keywords
power
feedback channel
base station
module
frequency
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CN201610416867.4A
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CN107508644B (en
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赵大千
陈豪
马兴望
林洁
熊林江
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Nanjing ZTE New Software Co Ltd
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ZTE Corp
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Priority to CN201610416867.4A priority Critical patent/CN107508644B/en
Priority to PCT/CN2016/103985 priority patent/WO2017215178A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of feedback channel on-line calibration method and its device.The feedback channel on-line calibration method of the present invention in feedback link by accessing a constant reference power, so as to ensure that the accuracy of feedback channel power, and then it ensure that the accuracy of base station transmitting power, simultaneously, can also online temperature correction be carried out to Base Transmitter passage, so that transmission power will not change with the aging of base station so that base station transmitting power can keep accurate for a long time；Meanwhile the invention enables base station can complete temperature correction at normal temperatures, it is not necessary to carry out high/low temperature circulation experiment.

Description

A kind of feedback channel on-line calibration method and its device
Technical field
The present invention relates to the communications field, more particularly to a kind of feedback that can improve output power in base station precision to lead to Road on-line calibration method and its device.
Background technology
In a base station, the power output of antenna opening can with frequency, temperature change and constantly change.In electricity In the case that road hardware configuration is constant, frequency, temperature change are bigger, and the change of gain is bigger, and gain After change, for base station down, power output precise decreasing can be caused, influences overlay area；For base That stands is up, can cause power detection precise decreasing, influences the plastics of user uplink data business.Therefore, In order to ensure base station operation under different frequency, different temperatures, each channel gain keeps constant, it is necessary to Carry out the calibration of power.
Calibration to output power in base station mainly includes frequency calibration and temperature correction, and both calibrating modes are equal Realized by calibration feedback passage, i.e., arrive antenna opening using the performance number that feedback channel is read as conversion Performance number, and the difference of itself and the actual power value of Base Transmitter is calibration data.Generally, in order to protect The accuracy of base station gain at normal temperatures is demonstrate,proved, it is necessary to which the calibration of advanced line frequency, will be surveyed in process of production The calibration data of each stylobate station at different frequencies is tried, obtains one group of calibration data, then writes base station In case calling in memory；And when variation of ambient temperature, the gain characteristic of base station can also change, meeting The above-mentioned calibration data in base station is no longer applicable, therefore, also need to carry out temperature correction after frequency calibration, I.e. by doing thermocycling to sample base station, to extract calibration data, and write in the register of base station in case Call.However, the limitation due to working condition, it is impossible to which school is carried out at all temperatures to each stylobate station Standard, therefore, in order to ensure the accuracy of frequency calibration value, it is necessary to carry out temperature-compensating to base station, and frequency Calibration table obtains being applied to together offset during different temperatures, to ensure the constant of output power in base station.
, then will meter and compensation schemes of the prior art are the temperature characterisitics by obtaining sample base station In obtained temperature calibration data write-in same model base station.But the temperature calibration data is not necessarily suitable for All base stations, so as to cause temperature correction inaccurate.Meanwhile in use, with the aging of base station, The temperature characterisitic of the radio-frequency devices of base station, which will also be sent, to be changed, but the calibration data of storage in a register is not It can be updated with the change of its temperature characterisitic, this results in the change of output power in base station over time Precision can also decline therewith.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of feedback channel on-line calibration method and its dress Put, it can provide a constant reference power to the feedback link of base station, and can be in base-station environment In the case of temperature change and base station aging, real-time on-line calibration is carried out to feedback channel, so as to realize Improve the purpose of base station reflection power accuracy.
In order to solve the above-mentioned technical problem, the invention provides a kind of feedback channel on-line calibration method, including Step：
Actual power value of the feedback channel of access constant reference power under current operating conditions is obtained in real time；
Current working frequency in the current operating conditions of base station calls the original calibrated table prestored, obtains To the original calibration data corresponding to the current working frequency；
It is logical to the feedback according to the currently practical performance number of the feedback channel and the original calibration data Road carries out real-time online calibration.
Correspondingly, the embodiment of the present invention additionally provides a kind of feedback channel on-line calibration device, including：
Reference power output module, for providing constant reference power to feedback link；
Real time data acquisition module, the feedback channel that the constant reference power is accessed for obtaining in real time are current Actual power value under condition of work；
Calling module, call in base station and prestore for the current working frequency in same day condition of work Original calibrated table, obtain the original calibration data corresponding to the current working frequency；
Calibration module, for the reality according to the original calibration data called and the feedback channel obtained in real time Border performance number, real-time online calibration is carried out to the feedback channel.
Implement the embodiment of the present invention, have the advantages that：
The reference power value that the present invention exports not variation with temperature and change, so as to ensure that feedback channel work( The accuracy of rate, and then the accuracy of base station transmitting power is ensure that, meanwhile, can also be to Base Transmitter passage Online temperature correction is carried out, so that transmission power will not change with the aging of base station so that base station Transmission power can keep accurate for a long time；Meanwhile the invention enables base station can complete temperature school at normal temperatures It is accurate, it is not necessary to carry out high/low temperature circulation experiment.The present invention builds for analog circuit, and cost is relatively low, can advise greatly Mould is commercial.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing The required accompanying drawing used is briefly described in example or description of the prior art, it should be apparent that, describe below In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of an embodiment of feedback channel on-line calibration method of the present invention；
Fig. 2 is a kind of flow chart of a specific embodiment of feedback channel on-line calibration method of the present invention；
Fig. 3 is a kind of functional block diagram of an embodiment of feedback channel on-line calibration device of the present invention；
Fig. 4 be the reaction present invention a kind of feedback channel on-line calibration device in reference power output module with it is anti- Present the annexation figure of link；
Fig. 5 is the circuit theory diagrams of a specific embodiment of reference power output module in Fig. 3；
Fig. 6 is the circuit theory diagrams of a specific embodiment of reference voltage module in Fig. 3；
Fig. 7 is to reflect in Fig. 1 at normal temperatures, and the master reference table obtained by producing line calibration is carried out to base station；
Fig. 8 is to reflect in Fig. 2 at normal temperatures, and UMTS 2140MHz base stations are carried out obtained by producing line is calibrated Master reference table.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present invention, rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
The present invention passes through in feedback channel working clearance, acquisition conditions present and the calibration difference of original calibrated condition Value, on-line calibration feedback channel so that feedback channel can keep inspection accurate under different operating environment, And output power in base station is exactly to pass through the feedback channel calibration of power, so as to adjust transmission channel power, base is improved Power output of standing precision.
Embodiment one
With reference to figure 1, for a kind of flow chart of an embodiment of feedback channel on-line calibration method of the present invention, tool Body, the on-line calibration method of the present embodiment includes step：
S101, the feedback channel of access constant reference power is obtained in real time, it is current under current operating conditions Actual power value.
In the present embodiment, the current operating conditions are for original condition of work.Original condition of work Refer to the base station environment residing when producing line is calibrated, such as working frequency points, operating temperature etc..However, base station Actual operating frequency and actual work temperature can all change during base station operation, and this will also influence anti- The performance number in feedthrough road, therefore, it is necessary to obtain base station conditions present, i.e. current working frequency, work at present At a temperature of actual power value, and then according to its carry out real-time online calibration.
In the present embodiment, when being calibrated, if base station local vibration source directly is accessed into feedback link, but this Vibration source also changes variation with temperature, therefore, in order to improve precision, in the present embodiment, to the feedback Constant reference power is accessed in link, i.e., is followed by frequency source and reference voltage source by power invariability processing Enter the feedback channel.In one embodiment, the step of carry out power invariability processing, specifically includes step Suddenly：
By the reference power of frequency source output by power splitter, and an output end of the power splitter is exported Power makes it be converted to d. c. voltage signal coupled to detection module, then after the amplification of logarithmic amplification module, Integrated comparison module is compared with the reference voltage that reference voltage source exports again, most afterwards through power attenuation mould Output obtains constant reference power after block processing.
In one embodiment, before the actual power value of feedback channel is obtained in real time, it is also necessary to including Step S107, the carry out producing line calibration to the base station, to obtain original calibrated table, specifically, it includes step Suddenly：
A, at normal temperatures, frequency calibration is carried out to the feedback channel for accessing constant reference power, corresponded to The frequency compensation value of different operating frequency.When it is implemented, the working frequency range according to corresponding to each base station, is pressed According to certain frequency interval, frequency calibration is carried out to the base station under different working frequency points, so as to obtain one group Original calibration data：Working frequency points Freq, the frequency compensation value P corresponding to working frequency points Freqcal1。
B, when obtaining different operating frequency, the performance number of feedback channel, and corresponding operating temperature.
C, according to the frequency compensation value, feedback channel performance number and operating temperature value corresponding to different operating frequency Generation corresponds to original calibrated table.It is and every when it is implemented, the original calibrated table includes multiple working frequency points Frequency compensation value P corresponding to individual working frequency pointscal1, corresponding to the operating temperature of each working frequency points, and feedback Channel power value etc., referring to Fig. 7.
S103, the original calibrated table prestored is called according to the current working frequency points in base station, is corresponded to The original calibration data of current working frequency.
S105, according to the currently practical performance number of the feedback channel and the original calibration data, to described Feedback channel carries out real-time online calibration.
In the present embodiment, by carrying out firm power processing to the reference power for accessing feedback link so that feedback link A temperature-independent constant reference power is accessed on road, so as to ensure that feedback channel power Accuracy, and then the accuracy of base station transmitting power is ensure that, meanwhile, also causing can be to Base Transmitter passage Online temperature correction is carried out, so that base station transmitting power will not change with the aging of base station, even if Obtaining base station transmitting power can keep accurate for a long time；Meanwhile it also may be such that temperature school is completed in base station at normal temperatures It is accurate, it is not necessary to carry out high/low temperature circulation experiment, and then reduce production cost, also save resource.
Embodiment two
Referring to Fig. 2, for the flow chart of a specific embodiment of the feedback channel on-line calibration method of the present invention.This In embodiment, UMTS 2140MHz base station of the rated output power for P is used, the local oscillator of the base station is as frequency Rate source, i.e., between it can provide a 2110MHz-2170MHz, be separated by 200KHz signal, then it is specific real Shi Shi, the on-line calibration method include step：
S201, power invariability processing is carried out to the reference power for accessing feedback link, obtains constant benchmark work( Rate, and access in feedback link.
In one embodiment, PRX is received by the main collection in base station local oscillator (i.e. frequency source) Yu base station Between a reference power output module and a SP3T switch are set, as shown in Figure 3 so that frequency The reference input power P 1=0dBm of source output is to power attenuation unit (by the PIN diode group of multiple series connection Into), then a part of power is coupled to by detector diode by power splitter, and detector diode characteristic is utilized, will Power signal is converted to d. c. voltage signal, this voltage signal with detector diode input power exponent function relation, Again after logafier amplifies, voltage signal is just directly proportional with detector diode input power, then passes through Integral contrast device compared with reference voltage V ref after be input in power attenuation unit.Even if when temperature becomes During change, reference power input P1 changes therewith, due to this equipment energy characteristic, inputs the direct current of PIN diode Pressure can also change, and the power attenuation amount of PIN diode can also change therewith, so as to ensure that the base after power splitter Quasi- power P 2 not variation with temperature and change, reference power value P2=-10dBm is obtained, by SP3T It is input to after switch SP3T in feedback link.
S202, under normal temperature, setting current working frequency is 2110MHz.
S203, obtain feedback channel coupling forward power value Ptcpw1With output power in base station Pout。
In one embodiment, SP3T electronic switch SP3T is switched to forward path, reads feedback Passage coupling forward power value Ptcpw1, output power in base station P is read by instrumentout。
S204, forward power value is coupled according to the feedback channel and reference output power calculates frequency compensation value, And store.
In one embodiment, the frequency compensation value is A1=Pout-Ptcpw1。
S205, the performance number of feedback channel, and current operating temperature value are obtained, and stored.
In one embodiment, SP3T electronic switch SP3T is switched to reference channel, reads feedback The current performance number of passage is B1, meanwhile, it is T to obtain current operating temperature1, and write the deposit of base station In device.
S206, according to default frequency interval switch operating frequency, and step S203-S206 is performed until arriving Working frequency points are 2170MHz, obtain original calibrated table as shown in Figure 5.
Referring to Fig. 5, ideally, when base station operation frequency is 2140MHz, its corresponding operating temperature is T181, but because electronic device generates heat in itself, either the reason such as aging or environment, works a period of time Afterwards, when base station operation frequency is 2140MHz, its operating temperature will not rest on T181 always, that is to say, that The operating temperature of base station is changed, temperature change T ' now, therefore, to exist in real time Line is calibrated, it is necessary to the current actual power value of feedback channel is obtained, so as to according to the original of primary standard table Calibration data carries out real-time online calibration, that is, performs step S207.
S207, obtain under conditions present, currently practical performance number and the feedback channel for feeding back forward path are current Actual power value.
In one embodiment, it is current working frequency 2140MHz to make the conditions present, current operating temperature For T '.As shown in Figure 5, in original calibrated table, when working frequency points are 2140MHz, its corresponding work It is T to make temperature181, thus, it is known that, the operating temperature of base station is changed, specifically, by SP3T Switch SP3T switches to feedback forward path, reads feedback channel coupling forward power value Ptcpw；By hilted broadsword three Throw switch SP3T switches to reference channel, and it is B ' to read feedback channel performance number.
S208, original calibrated table is called, obtain corresponding to the frequency compensation that current working frequency is 2140MHz Value A181With feedback channel power readings B181, calculate output power in base station value is Ptcpw+A181+B’-B181。
Do temperature correction online when base-station environment temperature change and base station aging, realize and improve transmitting The accuracy purpose of power.Other frequencies are also as a same reason.
Embodiment three
Referring to Fig. 3, for the functional block diagram of an embodiment of the feedback channel on-line calibration device of the present invention, tool Body, the on-line calibration device includes in the present embodiment：
Reference power output module 31, for providing constant reference power to feedback channel；Specifically, the base Quasi- power output module 31 includes：For providing the frequency source of reference input power (in one embodiment, The frequency source can directly use the local oscillator of base station), for providing the reference voltage submodule of reference voltage, it is used for The controlling switch (in one embodiment, the controlling switch is SP3T switch) of channel selecting, and For providing the power attenuation submodule of constant reference power to base station feedback link, wherein, the power attenuation Two inputs of submodule electrically connect with foregoing frequency source and reference voltage submodule respectively, its output end Electrically connected with the first control terminal of the controlling switch, the main collection that the output end of the controlling switch is external to base station connects Receive module PRX, second and third control terminal of the controlling switch be respectively connecting to the feedback link forward path and Backward channel, referring to Fig. 4；
Real time data acquisition module 32, for obtaining the conditions present parameter of base station, and it is permanent to obtain access in real time Determine the feedback channel of reference power, actual power value under the present conditions；In the present embodiment, the current work It is for original condition of work as condition, the original condition of work refers to that when institute is calibrated in base station in producing line The environment at place, such as working frequency points, operating temperature etc.；However, actual operating frequency and the real work of base station Temperature can all change during base station operation, and this will also influence the performance number of feedback channel, therefore, Need to obtain base station conditions present, be i.e. current working frequency, the actual power value under current operating temperature, enter And real-time online calibration is carried out according to it；In one embodiment, the real time data acquisition module 32 can adopt Realized with power meter；
Calling module 33, it is connected with the real time data acquisition module 32, for according to acquired conditions present Current working frequency in parameter, call in the original calibrated table prestored in base station corresponding to described current The original calibration data of working frequency points；
Calibration module 34, it is connected with the calling module 33, for according to the original calibration data and institute called The actual power value of the feedback channel obtained in real time, real-time online calibration is carried out to the feedback channel, and For carrying out producing line calibration to the base station in advance, original calibrated table is obtained.
In one embodiment, specifically included referring to Fig. 5, the power attenuation submodule：Power splitter, detection Unit, logarithmic amplification unit, integral contrast unit, and power attenuation unit, wherein,
The external said frequencies source of first input end of the power attenuation unit, the input of its output end and power splitter End electrical connection, the first output end of the power splitter are electrically connected with the first control terminal of controlling switch, and the control is opened Second and third control terminal closed is external to the forward path (i.e. an output end of coupler) of feedback link respectively And backward channel (node i.e. in feedback link between circulator and load attenuator), and the controlling switch Output end then receives PRX with the main collection of base station and electrically connected；And
Second output end of the power splitter passes through the detection unit and logarithmic amplification unit and integral contrast unit First input end electrically connects, the second input of the output end of the integral contrast unit and the power attenuation module End electrical connection, the external reference voltage submodule of the input of device second.
In one embodiment, include referring to Fig. 4, the reference voltage submodule：The LDO being sequentially connected in series, Digital analog converter DAC and voltage follower, wherein, linear voltage regulator LDO external power supplys, voltage follow Input of the output end of device then with above-mentioned reference power output module electrically connects.Specifically, the high accuracy LDO is converted to 5.5V supply voltages in base station the 5V voltages that precision is ± 0.1%, is assigned to by partial pressure After 2.5V, it is input in 16Bi t position DAC, DAC output voltage works as data bit for that can be adjusted by DATA For 1111111111111111 when, DAC output voltage 2.5V, then by voltage follower export one it is steady Fixed reference voltage V ref is that 2.5V is input in comparator.
In the present embodiment, when frequency source exports a reference power P1 to power attenuation submodule, the then reference A part of power is coupled to detection module by power P 1 by the power splitter in the power attenuation submodule, is utilized Detection module characteristic, power signal is converted into d. c. voltage signal, this voltage signal inputs with detection module Power exponent function relation, then after the amplification of logarithmic amplification module, voltage signal is just with detection module input work Rate is directly proportional, then is input to after integral contrast module is compared with reference voltage in power attenuation unit. When the temperature is changed, reference power input P1 changes therewith, and due to equipment energy characteristic, therefore, input power declines Subtracting the DC voltage of unit can also change, will be with input accordingly, due to the attenuation of the power attenuation unit The change of voltage and change, therefore, when reference power input P1 change when, the power of the power attenuation unit Attenuation can also change therewith, so as to ensure that the reference power P2 after power splitter not variation with temperature and become Change.
The present invention builds a reference power output module by analog circuit, and the constant reference power output it In access base station feedback link, so as to ensure that the accuracy of feedback channel power, and then it ensure that base station is sent out Penetrate the accuracy of power；, can be commercial on a large scale also, due to being built for analog circuit, cost is relatively low.
On the other hand, the on-line calibration device of the invention can also carry out online temperature school to Base Transmitter passage Standard, so that transmission power will not change with the aging of base station so that base station transmitting power can be grown Phase keeps accurate；Meanwhile the invention enables base station can complete temperature correction at normal temperatures, it is not necessary to carry out High/low temperature circulation experiment.
Example IV
Present invention also offers a kind of output control device that can export firm power, its concrete structure and work It is identical to make structure and the operation principle of principle and the reference power output module in above-described embodiment three, identical Part uses identical reference, repeats no more here.
Above disclosure is only preferred embodiment of present invention, can not limit the present invention's with this certainly Interest field, one of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, And the equivalent variations made according to the claims in the present invention, still fall within and invent covered scope.

Claims (14)

  1. A kind of 1. feedback channel on-line calibration method, it is characterised in that including step：
    Actual power value of the feedback channel of access constant reference power under current operating conditions is obtained in real time；
    Current working frequency in the current operating conditions of base station calls the original calibrated table prestored, obtains To the original calibration data corresponding to the current working frequency；
    It is logical to the feedback according to the currently practical performance number of the feedback channel and the original calibration data Road carries out real-time online calibration.
  2. 2. feedback channel on-line calibration method as claimed in claim 1, it is characterised in that the constant reference Power is by being obtained after carrying out power invariability processing to the reference power in access feedback link.
  3. 3. feedback channel on-line calibration method as claimed in claim 2, it is characterised in that described pair of access is anti- Present the reference power in link and carry out power invariability processing, the step of obtaining constant reference power, specific bag Include step：
    By the reference power of frequency source output by power splitter, and an output end of the power splitter is exported Power it is converted to d. c. voltage signal coupled to detection module, then after the amplification of logarithmic amplification module, Integrated comparison module is compared with the reference voltage that the reference voltage source is provided again, most afterwards through power Output obtains constant reference power after attenuation module processing.
  4. 4. feedback channel on-line calibration method as claimed in claim 1, it is characterised in that described to obtain in real time Before the step of actual power value of the feedback channel under current operating conditions, in addition to step：
    Producing line calibration is carried out to the feedback channel for accessing the constant reference power in advance, obtains original calibrated table.
  5. 5. feedback channel on-line calibration method as claimed in claim 4, it is characterised in that the docking in advance The feedback channel for entering the constant reference power carries out producing line calibration, the step of obtaining original calibrated table, specifically Including step：
    At normal temperatures, frequency calibration is carried out to the feedback channel for accessing the constant reference power, obtained Corresponding to the frequency compensation value of different operating frequency；Meanwhile
    When obtaining different operating frequency, the performance number of the feedback channel, and corresponding operating temperature；
    According to the frequency compensation value, feedback channel performance number and operating temperature corresponding to the different operating frequency Original calibrated table corresponding to value generation.
  6. A kind of 6. feedback channel on-line calibration device, it is characterised in that including：
    Reference power output module, for providing constant reference power to feedback link；
    Real time data acquisition module, the feedback channel that the constant reference power is accessed for obtaining in real time are current Actual power value under condition of work；
    Calling module, call in base station and prestore for the current working frequency in same day condition of work Original calibrated table, obtain the original calibration data corresponding to the current working frequency；
    Calibration module, for the reality according to the original calibration data called and the feedback channel obtained in real time Border performance number, real-time online calibration is carried out to the feedback channel.
  7. 7. feedback channel on-line calibration device as claimed in claim 6, it is characterised in that the benchmark work( Rate output module includes：Frequency source and reference voltage submodule, controlling switch, and two input difference The power attenuation submodule electrically connected with the frequency source and the reference voltage submodule, and the power declines The output end for subtracting submodule also electrically connects with the first control terminal of the controlling switch, and the of the controlling switch 2nd, three control terminals are external to the forward path and backward channel of the feedback link respectively, and its output end is external To the main collection receiving module of the base station.
  8. 8. feedback channel on-line calibration device as claimed in claim 7, it is characterised in that the power attenuation Submodule includes：Power splitter, detection unit, logarithmic amplification unit, integral contrast unit, and power attenuation Unit, wherein,
    The external frequency source of first input end of the power attenuation unit, its output end and the power splitter Input electrical connection, the first output end of the power splitter is electrically connected with the first control terminal of the controlling switch Connect；Second output end of the power splitter passes sequentially through the detection unit and the logarithmic amplification unit and institute State the first input end electrical connection of integral contrast unit, output end and the power of the integral contrast module The second input electrical connection of attenuation units, the external reference voltage submodule of its second input.
  9. 9. feedback channel on-line calibration device as claimed in claim 8, it is characterised in that the controlling switch For SP3T switch.
  10. 10. feedback channel on-line calibration device as claimed in claim 7, it is characterised in that the benchmark electricity Pressure submodule includes：The linear voltage regulator LDO being sequentially connected in series, digital analog converter DAC and voltage follower, Wherein, the linear voltage regulator LDO external power supplys, the output end of the voltage follower and the benchmark work( Rate output module electrically connects.
  11. A kind of 11. output control device that can export firm power, it is characterised in that including：
    Frequency source and reference voltage submodule, controlling switch, and two inputs respectively with the frequency source The power attenuation submodule electrically connected with the reference voltage submodule, and
    The output end of the power attenuation submodule also electrically connects with the first control terminal of the controlling switch.
  12. 12. output control device as claimed in claim 11, it is characterised in that the power attenuation submodule Including：Power splitter, detection unit, logarithmic amplification unit, integral contrast unit, and power attenuation unit, Wherein,
    The external frequency source of first input end of the power attenuation unit, its output end and the power splitter Input electrical connection, the first output end of the power splitter is electrically connected with the first control terminal of the controlling switch Connect；Second output end of the power splitter passes sequentially through the detection unit and the logarithmic amplification unit and institute State the first input end electrical connection of integral contrast unit, output end and the power of the integral contrast module The second input electrical connection of attenuation units, the external reference voltage submodule of its second input.
  13. 13. the output control device as described in claim 11 or 12, it is characterised in that the controlling switch For SP3T switch.
  14. 14. the output control device as described in claim 11 or 12, it is characterised in that the reference voltage Submodule includes：The linear voltage regulator LDO being sequentially connected in series, digital analog converter DAC and voltage follower, its In, the linear voltage regulator LDO external power supplys, the output end of the voltage follower and the reference power Output module electrically connects.
CN201610416867.4A 2016-06-14 2016-06-14 Feedback channel on-line calibration method and device Active CN107508644B (en)

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PCT/CN2016/103985 WO2017215178A1 (en) 2016-06-14 2016-10-31 Online calibration method and device for feedback path

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CN107508644B CN107508644B (en) 2020-07-31

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