CN106877886A - multi-system access platform voltage standing wave ratio detection method and device - Google Patents
multi-system access platform voltage standing wave ratio detection method and device Download PDFInfo
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- CN106877886A CN106877886A CN201710044354.XA CN201710044354A CN106877886A CN 106877886 A CN106877886 A CN 106877886A CN 201710044354 A CN201710044354 A CN 201710044354A CN 106877886 A CN106877886 A CN 106877886A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
- G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0017—Digital filtering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
- H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The present invention relates to a kind of multi-system access platform voltage standing wave ratio detection method and device, the method is comprised the following steps：Coupling broadband signal；The forward direction coupled signal for gating one of them frequency band to be measured is exported；Bandpass filtering treatment is carried out to coupled signal to preceding, corresponding narrow frequency bands signal is obtained；Gating narrow frequency bands signal is exported；Detection is carried out to narrow frequency bands signal and forms voltage signal；Filtering is amplified to voltage signal；Analog-to-digital conversion process is carried out to amplifying filtered voltage signal；Digitized voltage signal is carried out into comparing calculation with the power meter of preset narrow frequency bands signal and obtains forward power value；Gating reverse coupled signal is exported, and repeat step obtains backward power value, and voltage standing wave ratio is calculated according to forward power value and backward power value；The forward and backward coupled signal of the next frequency band to be measured of poll obtains corresponding voltage standing wave ratio.The achievable broad-band antenna of the present invention is segmented the detection of voltage standing wave ratio, and integrated level is high, low cost.
Description
【Technical field】
The present invention relates to wireless communication technology field, more particularly, to a kind of broad-band antenna segmentation of multi-system access platform
Voltage standing wave ratio detection method and device.
【Background technology】
Current present mobile communication develops into 4G from 2G.2G, 3G and 4G are coexisted, and various covering systems are built together and coexisted,
Broad-band antenna is largely used, and the state-detection of antenna and feeder line, especially voltage standing wave ratio are that a system antenna matching is good
Important measurement index, POI (Point of interface) as in-door covering one of solution, with reliability
High, economic dispatch advantage, in order to understand the working condition of POI system middle width strip antennas in real time, in POI systems, it is desirable to antenna
The voltage standing wave ratio of each frequency range is detected that current general technology can meet the total voltage standing wave ratio detection of antenna and require,
But the device of the voltage standing wave ratio state there is presently no detection each frequency range of broad-band antenna, while coupler and other radio-frequency devices
Deng there is larger difference under different frequency range and different temperatures, it is difficult to accurately detected.
【The content of the invention】
It is an object of the invention to overcome the shortcomings of above-mentioned technology, there is provided a kind of multi-system access platform voltage standing wave ratio inspection
Method and apparatus are surveyed, the requirement of the segmentation of broadband present in current POI systems voltage standing wave ratio detection is solved.
The first aspect of the present invention provides a kind of multi-system access platform voltage standing wave ratio detection method, including following step
Suddenly：
S1, coupling broadband signal, export the forward and backward coupled signal of multiple frequency bands to be measured；
S2, the forward direction coupled signal for gating one of them frequency band to be measured are exported；
S3, bandpass filtering treatment is carried out to the forward direction coupled signal, obtain corresponding narrow frequency bands signal；
S4, the gating narrow frequency bands signal are exported；
S5, detection is carried out to the narrow frequency bands signal, form voltage signal；
S6, filtering is amplified to the voltage signal；
S7, analog-to-digital conversion process is carried out to amplifying the filtered voltage signal, the voltage signal is converted into number
The voltage signal of word；
S8, the digitized voltage signal is carried out into comparing calculation with the power meter of preset narrow frequency bands signal, obtained
Forward power value；
S9, the reverse coupled signal of the gating correspondence forward direction coupled signal are exported, repeat step S3- step S8,
Backward power value is obtained, according to the forward power value and backward power value, voltage standing wave ratio is calculated；
The forward and backward coupled signal of the next frequency band to be measured of S10, poll, obtains corresponding voltage standing wave ratio.
Further, after the step S4, before step S5 it is further comprising the steps of：To the narrow frequency bands signal
Carry out radio frequency amplification.
Further, after the step S8, before step S9 it is further comprising the steps of：Environment inside detection means
Temperature, temperature and the preset temperature compensation according to detection several carries out performance number compensation to the forward power value.
Further, in the step S10, poll is carried out by certain hour period distances.
The second aspect of the present invention provides a kind of multi-system access platform voltage standing wave ratio detection means, including：
Broadband couple device circuit, for coupling broadband signal, and exports the forward and backward coupled signal of multiple frequency bands to be measured；
Input radio frequency switch combination, forward direction coupled signal or reverse coupled for gating one of them frequency band to be measured
Signal is exported；
Radio frequency filter circuit, for the forward direction coupled signal or reverse coupled signal of input radio frequency switch input to be entered
Row bandpass filtering treatment, obtains corresponding narrow frequency bands signal；
Output RF switch combination, is exported for gating the narrow frequency bands signal；
Power detection circuit, for carrying out detection to the narrow frequency bands signal, forms voltage signal；
Operational amplification circuit, for being amplified filtering to the voltage signal；
Analog to digital conversion circuit, for carrying out analog-to-digital conversion process to amplifying the filtered voltage signal, by the electricity
Pressure signal is converted into digitized voltage signal；
Single-chip microcomputer, for controlling the input radio frequency switch combination and the signalling channel of output RF switch combination to gate,
For the digitized voltage signal and the power meter of corresponding preset narrow frequency bands signal to be carried out before comparing calculation obtains
To performance number or backward power value, for being calculated voltage standing wave ratio according to forward power value and backward power value, for taking turns
The forward direction coupled signal and reverse coupled signal for asking each frequency band to be measured obtain corresponding voltage standing wave ratio.
Further, also including radio frequency amplifying circuit, for the narrow frequency bands to the output RF switch combination output
Signal carries out radio frequency amplification, and exports to the power detection circuit.
Further, also including temperature sensor, for the environment temperature inside detection means, and the temperature value that will be detected
Send to the single-chip microcomputer, the single-chip microcomputer is used to compensate several forward direction work(to obtaining according to the temperature value and preset temperature of detection
Rate value or backward power value carry out performance number compensation.
Further, also including memory, for storing the power meter of preset narrow frequency bands signal, forward power value, anti-
Number is compensated to performance number, the voltage standing wave ratio being calculated according to forward power value and backward power value and preset temperature.
Further, the broadband couple device circuit be two channel wideband sling termination powers, respectively with before two pairs to
Reverse coupled output port.
Further, the input radio frequency switch combination includes SP4T RF switches and the output with SP4T RF switches
The SP8T RF switches of connection, the output RF switch is held to be combined as a SP8T RF switches.
The present invention is combined and is used as signalling channel selecting switch by input radio frequency switch combination and output RF switch, is gated
The forward and reverse coupled signal of one of them frequency band to be measured, and corresponding narrow frequency bands are obtained by radio frequency filter circuit treatment
Signal, it is narrow with preset by single-chip microcomputer through the narrow frequency bands signal after radio frequency amplification, power detection, amplification filtering, analog-to-digital conversion
Power meter comparing calculation with band signal obtains forward power value or backward power value, then to obtaining forward power value and reversely
Performance number is calculated voltage standing wave ratio, then by the forward and backward coupled signal of each frequency band to be measured of single-chip microcomputer poll, obtains
To corresponding voltage standing wave ratio, so as to realize that broad-band antenna is segmented the detection of voltage standing wave ratio, accuracy of detection is high, and integrated level is high,
Reliability is high, low cost.
【Brief description of the drawings】
Fig. 1 is a kind of theory diagram of multi-system access platform voltage standing wave ratio detection means of the invention；
Fig. 2 is the schematic diagram of the detection means of multi-system access platform voltage standing wave ratio shown in Fig. 1；
Fig. 3 is the structure of the input radio frequency switch combination of the detection means of multi-system access platform voltage standing wave ratio shown in Fig. 1
Schematic diagram；
Fig. 4 is the structure of the output RF switch combination of the detection means of multi-system access platform voltage standing wave ratio shown in Fig. 1
Schematic diagram；
Fig. 5 is the structural representation of the radio frequency filter circuit of the detection means of multi-system access platform voltage standing wave ratio shown in Fig. 1
Figure；
Fig. 6 is a kind of schematic flow sheet of multi-system access platform voltage standing wave ratio detection method of the invention.
【Specific embodiment】
The invention will be further described with reference to the accompanying drawings and examples.
With reference to a kind of multi-system access platform voltage standing wave ratio detection means that Fig. 1 and Fig. 2, the present invention are provided, including width
Electricity is amplified in band termination power 11, input radio frequency switch combination 12, radio frequency filter circuit 16, output RF switch combination 26, radio frequency
Road 27, power detection circuit 30, operational amplification circuit 31, analog to digital conversion circuit 32, single-chip microcomputer 33, temperature sensor 35 and storage
Device 34.One end of the connection input radio frequency of broadband couple device circuit 11 switch combination 12, the other end of input radio frequency switch combination 12 connects
One end of radio frequency filter circuit 16 is connected to, the other end of radio frequency filter circuit 16 is connected to the one of output RF switch combination 26
End, the other end of output RF switch combination 26 is connected to the input of radio frequency amplifying circuit 27, radio frequency amplifying circuit 27 it is defeated
Go out one end that end is connected to power detection circuit 30, the other end of power detection circuit 30 is connected to the one of analog to digital conversion circuit 32
End, the other end of analog to digital conversion circuit 32 is connected to single-chip microcomputer 33, memory 34, temperature sensor 35, input radio frequency switches set
Close 12, output RF switch combination 26 and be connected respectively to single-chip microcomputer 33.
Broadband couple device circuit 11 is used for coupling broadband signal, and exports the forward and backward coupling letter of multiple frequency bands to be measured
Number.The forward direction coupled signal or reverse coupled signal that input radio frequency switch combination 12 is used to gate one of them frequency band to be measured are carried out
Output.Radio frequency filter circuit 16 is used to for the forward direction coupled signal or reverse coupled signal of the input of input radio frequency switch 12 to carry out band
Pass filter treatment, suppresses out of band signal, obtains corresponding narrow frequency bands signal, narrow frequency bands signal according to detection segmentation require into
Row is preset, including is not limited to GSM, CDMA, DCS, PHS of 2G, the TD- of CDMA2000, WCDMA, TD-SCDMA and 4G of 3G
The frequency ranges such as LTE, FDD-LTE.Output RF switch combination 26 is exported for gating narrow frequency bands signal.Radio frequency amplifying circuit
27 are used to carry out radio frequency amplification to the narrow frequency bands signal of the output of output RF switch combination 26, and export to power detection circuit
30, radio frequency amplifying circuit 27 is wideband gain amplifier, the loss for compensating radio frequency link.It is right that power detection circuit 30 is used for
Narrow frequency bands signal carries out detection, forms voltage signal, and power detection circuit 30 is an average detector.Operational amplification circuit 31
For being amplified filtering to voltage signal, operational amplification circuit 31 is an in-phase amplification circuit.Analog to digital conversion circuit 32 is used for
Analog-to-digital conversion process is carried out to amplifying filtered voltage signal, voltage signal is converted into digitized voltage signal, modulus
Change-over circuit 32 is a 12bit analog-digital converters, can convert analog signals into data signal.Temperature sensor 35 is used to detect
Environment temperature inside device, and the temperature value of detection is sent to single-chip microcomputer 33, temperature sensor 35 is examined for a linear temperature
Survey device.
Single-chip microcomputer 35 is used for the signalling channel choosing of control input RF switch combination 12 and output RF switch combination 226
It is logical, for by digitized voltage signal and the power meter of corresponding preset narrow frequency bands signal carry out before comparing calculation is obtained to
Performance number or backward power value, for the several forward power values or anti-to obtaining of temperature value and the preset temperature compensation according to detection
Carry out performance number compensation to performance number, for being calculated voltage standing wave ratio according to forward power value and backward power value, being used for
The forward direction coupled signal and reverse coupled signal of poll each frequency band to be measured obtain corresponding voltage standing wave ratio, wherein preset temperature
Compensation number is the statistics obtained by batch experiment.Memory 34 be used for store preset narrow frequency bands signal power meter,
Forward power value, backward power value, the voltage standing wave ratio being calculated according to forward power value and backward power value and preset
Temperature-compensating number.
In the present embodiment, broadband couple device circuit 11 be two channel wideband sling termination powers, respectively with before two pairs to
Reverse coupled output port, meets the requirement of broad-band antenna segmentation voltage standing wave ratio detection.With reference to shown in Fig. 3, input radio frequency is opened
Closing combination 12 includes SP4T RF switches 12a and the SP8T RF switches being connected with the output end of SP4T RF switches 12a
12b, SP4T RF switch 12a have 4 inputs and an output end, and 4 inputs are respectively 121 inputs, 122 defeated
Enter end, 123 inputs and 124 inputs, SP8T RF switches 12b has an input and 8 output ends, 8 outputs
End is respectively 125 output ends, 126 output ends, 127 output ends, 128 output ends, 129 output ends, 130 output ends, 131 output ends
With 132 output ends.SP4T RF switch 12a and SP8T RF switch 12b high-isolations are strong, it is ensured that between each signalling channel
Isolation.With reference to shown in Fig. 4, output RF switch combination 26 is a SP8T RF switches, defeated with an input and 8
Go out end, 8 output ends are respectively 261 output ends, 262 output ends, 263 output ends, 264 output ends, 265 output ends, 266 outputs
End, 267 output ends, 268 output ends.With reference to shown in Fig. 5, radio frequency filter circuit 16 is rf filtering array, is filtered by multiple radio frequencies
Ripple device is constituted, in the present embodiment, specifically, rf filtering array is made up of 16 radio-frequency filters, and respectively radio-frequency filter
A, radio-frequency filter b, radio frequency set wave filter c ... ... radio-frequency filters h.
With reference to a kind of multi-system access platform voltage standing wave ratio detection method that Fig. 6, the present invention are provided, including following step
Suddenly：
S1, by the coupling broadband signal of broadband couple device circuit 11, export the forward and backward coupling letter of multiple frequency bands to be measured
Number, in the present embodiment, the forward and backward coupled signal of exportable 4 frequency bands to be measured.
S2, the forward direction coupled signal for being gated one of them frequency band to be measured by input radio frequency switch combination 12 are exported,
Such as input radio frequency switch combination 12 gates first forward direction coupled signal of frequency band to be measured, then input radio frequency switch combination
121 inputs of SP4T RF switches 12a are connected, the 125 output terminations of the SP8T RF switches 12b of input radio frequency switch combination
It is logical.
S3, by carrying out bandpass filtering treatment to coupled signal before radio frequency filter circuit 16 pairs, obtain corresponding arrowband frequently
Band signal.
S4, by export RF switch combine 26 gate narrow frequency bands signals exported, for example export RF switch group
261 output ends for closing 26 are connected.
S41, radio frequency amplification is carried out to narrow frequency bands signal by radio frequency amplifying circuit 27, to compensate the damage of radio frequency link
Consumption.
S5, detection is carried out to narrow frequency bands signal by power detection circuit 30, form voltage signal.
S6, filtering is amplified to voltage signal by operational amplification circuit 31.
S7, filtered voltage signals are amplified by analog to digital conversion circuit 32 pairs carry out analog-to-digital conversion process, voltage is believed
Number it is converted into digitized voltage signal.
S8, digitized voltage signal is carried out by contrast meter with the power meter of preset narrow frequency bands signal by single-chip microcomputer 33
Calculate, obtain forward power value.
S81, by the environment temperature inside the detection means of temperature sensor 35, by single-chip microcomputer 33 according to the temperature of detection
Several with preset temperature compensation that performance number compensation is carried out to forward power value, preset temperature offset data can improve accuracy of detection.
S9, by input radio frequency switch combination 12 gating correspondence before carried out to the reverse coupled signal of coupled signal it is defeated
Go out, then 121 inputs of the SP4T RF switches 12a of input radio frequency switch combination 12 connect, input radio frequency switch combination 12
126 output ends of SP8T RF switches 12b are connected.Repeat step S3- step S8, obtain backward power value, by single-chip microcomputer 33
According to forward power value and backward power value, voltage standing wave ratio is calculated.
S10, by 33 poll of single-chip microcomputer, second, the 3rd, the 4th forward and backward coupled signal of frequency band to be measured,
Obtain corresponding voltage standing wave ratio.With this cyclic polling, poll is carried out by certain hour period distances, polling time interval requirement
With switch time delay, the response time of power detection circuit 30, the temperature that input radio frequency switch combination 12, output RF switch combine 26
The sample temperature time of sensor 35 and the calculating time of single-chip microcomputer 33 match.During poll, the signalling channel of gating is connected, and is choosing
Logical signalling channel is closed.
The present invention combines 26 by input radio frequency switch combination 12 and output RF switch is used as signalling channel selecting switch,
The forward and reverse coupled signal of one of them frequency band to be measured is gated, and obtains corresponding narrow by the treatment of radio frequency filter circuit 16
Band band signal, through the narrow frequency bands signal after radio frequency amplification, power detection, amplification filtering, analog-to-digital conversion, by single-chip microcomputer 33
Forward power value or backward power value are obtained with the power meter comparing calculation of preset narrow frequency bands signal, then to obtaining forward power
Value and backward power value are calculated voltage standing wave ratio, then by the forward and backward coupling of each frequency band to be measured of the poll of single-chip microcomputer 33
Signal is closed, corresponding voltage standing wave ratio is obtained, so as to realize that broad-band antenna is segmented the detection of voltage standing wave ratio, accuracy of detection is high,
Integrated level is high, and reliability is high, low cost.
Above example only expresses the preferred embodiment of the present invention, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, it is such as special to the difference in each embodiment
Levy and be combined, these belong to protection scope of the present invention.
Claims (10)
1. a kind of multi-system access platform voltage standing wave ratio detection method, it is characterised in that：Comprise the following steps：
S1, coupling broadband signal, export the forward and backward coupled signal of multiple frequency bands to be measured；
S2, the forward direction coupled signal for gating one of them frequency band to be measured are exported；
S3, bandpass filtering treatment is carried out to the forward direction coupled signal, obtain corresponding narrow frequency bands signal；
S4, the gating narrow frequency bands signal are exported；
S5, detection is carried out to the narrow frequency bands signal, form voltage signal；
S6, filtering is amplified to the voltage signal；
S7, analog-to-digital conversion process is carried out to amplifying the filtered voltage signal, the voltage signal is converted into digitlization
Voltage signal；
S8, the digitized voltage signal is carried out into comparing calculation with the power meter of preset narrow frequency bands signal, before obtaining to
Performance number；
S9, the reverse coupled signal of the gating correspondence forward direction coupled signal are exported, and repeat step S3- step S8 are obtained
Backward power value, according to the forward power value and backward power value, is calculated voltage standing wave ratio；
The forward and backward coupled signal of the next frequency band to be measured of S10, poll, obtains corresponding voltage standing wave ratio.
2. multi-system access platform voltage standing wave ratio detection method according to claim 1, it is characterised in that：In the step
After rapid S4, it is further comprising the steps of before step S5：Radio frequency amplification is carried out to the narrow frequency bands signal.
3. multi-system access platform voltage standing wave ratio detection method according to claim 1, it is characterised in that：In the step
After rapid S8, it is further comprising the steps of before step S9：Environment temperature inside detection means, according to the temperature and preset of detection
Temperature-compensating number carries out performance number compensation to the forward power value.
4. multi-system access platform voltage standing wave ratio detection method according to claim 1, it is characterised in that：The step
In S10, poll is carried out by certain hour period distances.
5. a kind of multi-system access platform voltage standing wave ratio detection means, it is characterised in that：Including：
Broadband couple device circuit, for coupling broadband signal, and exports the forward and backward coupled signal of multiple frequency bands to be measured；
Input radio frequency switch combination, forward direction coupled signal or reverse coupled signal for gating one of them frequency band to be measured
Exported；
Radio frequency filter circuit, for the forward direction coupled signal or reverse coupled signal of input radio frequency switch input to be carried out into band
Pass filter treatment, obtains corresponding narrow frequency bands signal；
Output RF switch combination, is exported for gating the narrow frequency bands signal；
Power detection circuit, for carrying out detection to the narrow frequency bands signal, forms voltage signal；
Operational amplification circuit, for being amplified filtering to the voltage signal；
Analog to digital conversion circuit, for carrying out analog-to-digital conversion process to amplifying the filtered voltage signal, by voltage letter
Number it is converted into digitized voltage signal；
Single-chip microcomputer, for controlling the input radio frequency switch combination and the signalling channel of output RF switch combination to gate, is used for
The digitized voltage signal and the power meter of corresponding preset narrow frequency bands signal are carried out before comparing calculation is obtained to work(
Rate value or backward power value, it is each for poll for being calculated voltage standing wave ratio according to forward power value and backward power value
The forward direction coupled signal and reverse coupled signal of individual frequency band to be measured obtain corresponding voltage standing wave ratio.
6. multi-system access platform voltage standing wave ratio detection means according to claim 5, it is characterised in that：Also include penetrating
Frequency amplifying circuit, carries out radio frequency amplification, and export extremely for the narrow frequency bands signal to the output RF switch combination output
The power detection circuit.
7. multi-system access platform voltage standing wave ratio detection means according to claim 5, it is characterised in that：Also include temperature
Degree sensor, for the environment temperature inside detection means, and the temperature value of detection is sent to the single-chip microcomputer, the monolithic
Machine is used to carry out power according to the several forward power values or backward power value to obtaining of temperature value and preset temperature compensation of detection
Value complement is repaid.
8. multi-system access platform voltage standing wave ratio detection means according to claim 7, it is characterised in that：Also include depositing
Reservoir, for store the power meter of preset narrow frequency bands signal, forward power value, backward power value, according to forward power value and
Voltage standing wave ratio and preset temperature compensation number that backward power value is calculated.
9. multi-system access platform voltage standing wave ratio detection means according to claim 5, it is characterised in that：The broadband
Termination power is two channel wideband sling termination powers, respectively with two pairs of forward and backward coupled output ports.
10. multi-system access platform voltage standing wave ratio detection means according to claim 5, it is characterised in that：It is described defeated
Entering radio frequency switch combination includes SP4T RF switches and the SP8T RF switches being connected with the output end of SP4T RF switches, institute
State output RF switch and be combined as a SP8T RF switches.
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| CN201710044354.XA CN106877886B (en) | 2017-01-19 | 2017-01-19 | Multi-system access platform voltage standing wave ratio detection method and device |
| PCT/CN2017/091044 WO2018133332A1 (en) | 2017-01-19 | 2017-06-30 | Voltage standing wave ratio detection method and device for point of interface |
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| CN201710044354.XA CN106877886B (en) | 2017-01-19 | 2017-01-19 | Multi-system access platform voltage standing wave ratio detection method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707211A (en) * | 2017-09-27 | 2018-02-16 | 上海联影医疗科技有限公司 | A kind of power amplifier compensation method, device and system |
| WO2018133332A1 (en) * | 2017-01-19 | 2018-07-26 | 深圳国人通信股份有限公司 | Voltage standing wave ratio detection method and device for point of interface |
| CN110113117A (en) * | 2019-05-15 | 2019-08-09 | 深圳市国人射频通信有限公司 | A kind of method and device counting LTE TDD signal power |
| CN110266403A (en) * | 2019-06-28 | 2019-09-20 | 京信通信系统（中国）有限公司 | A kind of signal power detection method, apparatus and system |
| CN117728884A (en) * | 2023-12-28 | 2024-03-19 | 广州配天通信技术有限公司 | Method and device for detecting voltage standing wave ratio of multi-system access platform |
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| CN106877886B (en) | 2019-03-15 |
| WO2018133332A1 (en) | 2018-07-26 |
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