CN106877886B - 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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- CN106877886B CN106877886B CN201710044354.XA CN201710044354A CN106877886B CN 106877886 B CN106877886 B CN 106877886B CN 201710044354 A CN201710044354 A CN 201710044354A CN 106877886 B CN106877886 B CN 106877886B
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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
- H04B1/005—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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- 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 devices, method includes 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, obtains corresponding narrow frequency bands signal；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 filtered voltage signal is amplified；The power meter of digitized voltage signal and preset narrow frequency bands signal is compared, forward power value is calculated；Gating reverse coupled signal is exported, and is repeated step and is obtained backward power value, 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 detection of broad-band antenna segmentation voltage standing wave ratio can be achieved in the present invention, and integrated level is high, at low cost.
Description
[technical field]
The present invention relates to wireless communication technology fields, are segmented more particularly, to a kind of broad-band antenna of multi-system access platform
Voltage standing wave ratio detection method and device.
[background technique]
Present mobile communication develops to 4G from 2G at present.2G, 3G and 4G coexist, and various covering systems, which are built together, to be coexisted,
Broad-band antenna largely uses, 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, solution one of of the POI (Point of interface) as in-door covering, have reliability
The advantages such as height, economy, in order to understand the working condition of POI system middle width strip antenna in real time, in POI system, it is desirable that antenna
The voltage standing wave ratio of each frequency range is detected, and general technology can satisfy the total voltage standing wave ratio testing requirements of antenna at present,
But there is presently no the device of the voltage standing wave ratio state of detection each frequency range of broad-band antenna, while coupler and other radio-frequency devices
Deng there are larger differences under different frequency range and different temperatures, it is difficult to accurately be detected.
[summary of the invention]
It is an object of the invention to overcome the shortcomings of above-mentioned technology, a kind of multi-system access platform voltage standing wave ratio inspection is provided
Method and apparatus are surveyed, the requirement of the segmentation of broadband present in current POI system 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
It is rapid:
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, obtains 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, forms voltage signal；
S6, filtering is amplified to the voltage signal；
S7, the voltage signal filtered to amplification carry out analog-to-digital conversion process, convert number for the voltage signal
The voltage signal of word；
S8, the power meter of the digitized voltage signal and preset narrow frequency bands signal is compared into calculating, obtained
Forward power value；
The reverse coupled signal of the corresponding forward direction coupled signal of S9, gating is exported, repeat step S3- step S8 and
The forward direction coupled signal of step S3 is replaced by the reverse coupled signal, to obtain backward power value, root in step s 8
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, further comprising the steps of after the step S4, before step S5: to the narrow frequency bands signal
Carry out radio frequency amplification.
Further, further comprising the steps of after the step S8, before step S9: the environment inside detection device
Temperature compensates according to the temperature of detection and preset temperature and several carries out power value complement to obtained forward power value or backward power value
It repays.
Further, in the step S10, poll is carried out by a certain period of time interval.
The second aspect of the present invention provides a kind of multi-system access platform voltage standing wave ratio detection device, comprising:
Broadband couple device circuit is used for coupling broadband signal, and exports the forward and backward coupled signal of multiple frequency bands to be measured；
Input radio frequency switch combination, for gating the forward direction coupled signal or reverse coupled of one of them frequency band to be measured
Signal is exported；
Radio frequency filter circuit, for by the input radio frequency switch input forward direction coupled signal or reverse coupled signal into
Row bandpass filtering treatment obtains corresponding narrow frequency bands signal；
RF switch combination is exported, is exported for gating the narrow frequency bands signal；
Power detection circuit forms voltage signal for carrying out detection to the narrow frequency bands signal；
Operational amplification circuit, for amplifying filtering to the voltage signal；
Analog to digital conversion circuit, for carrying out analog-to-digital conversion process to the filtered voltage signal of amplification, by the electricity
Pressure signal is converted into digitized voltage signal；
Single-chip microcontroller, for controlling the input radio frequency switch combination and exporting the signal path gating of RF switch combination,
For before the digitized voltage signal compared with the power meter of corresponding preset narrow frequency bands signal being calculated
To performance number or backward power value, for voltage standing wave ratio to be calculated 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.
It further, further include 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.
It further, further include temperature sensor, for the environment temperature inside detection device, and the temperature value that will test
It is sent to the single-chip microcontroller, the single-chip microcontroller is several to obtained forward direction function for compensating according to the temperature value and preset temperature of detection
Rate value or backward power value carry out performance number compensation.
It further, further include 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 coupling circuit, before being respectively provided with two pairs to
Reverse coupled output port.
Further, the input radio frequency switch combination includes SP4T RF switch and the output with SP4T RF switch
The SP8T RF switch of connection is held, the output RF switch group is combined into a SP8T RF switch.
The present invention is by input radio frequency switch combination and the combination of output RF switch as signal path selection switch, gating
The forward and reverse coupled signal of one of them frequency band to be measured, and handle to obtain corresponding narrow frequency bands by radio frequency filter circuit
Signal, through radio frequency amplification, power detection, amplification filtering, the narrow frequency bands signal after analog-to-digital conversion, by single-chip microcontroller with it is preset narrow
Power meter comparing calculation with band signal obtains forward power value or backward power value, then to obtaining forward power value and reversed
Voltage standing wave ratio is calculated in performance number, then passes through the forward and backward coupled signal of each frequency band to be measured of single-chip microcontroller poll, obtains
To corresponding voltage standing wave ratio, to realize the detection of broad-band antenna segmentation voltage standing wave ratio, detection accuracy is high, and integrated level is high,
High reliablity, it is at low cost.
[Detailed description of the invention]
Fig. 1 is a kind of functional block diagram of multi-system access platform voltage standing wave ratio detection device of the present invention；
Fig. 2 is the schematic diagram of the detection device 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 device 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 device 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 device of multi-system access platform voltage standing wave ratio shown in Fig. 1
Figure；
Fig. 6 is a kind of flow diagram of multi-system access platform voltage standing wave ratio detection method of the present invention.
[specific embodiment]
The invention will be further described with reference to the accompanying drawings and examples.
With reference to Fig. 1 and Fig. 2, a kind of multi-system access platform voltage standing wave ratio detection device provided by the invention, including width
Band coupling circuit 11, input radio frequency switch combination 12, radio frequency filter circuit 16, output RF switch combination 26, radio frequency amplification electricity
Road 27, power detection circuit 30, operational amplification circuit 31, analog to digital conversion circuit 32, single-chip microcontroller 33, temperature sensor 35 and storage
Device 34.Broadband couple device circuit 11 connects one end of input radio frequency switch combination 12, and the other end of input radio frequency switch combination 12 connects
It is connected to one end of radio frequency filter circuit 16, 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 are connected to the input terminal of radio frequency amplifying circuit 27, radio frequency amplifying circuit 27 it is defeated
Outlet is connected to one end of power detection circuit 30, and 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 are connected to single-chip microcontroller 33, memory 34, temperature sensor 35, input radio frequency switching group
It closes 12, output RF switch combination 26 and is connected respectively to single-chip microcontroller 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.Input radio frequency switch combination 12 is used to gate the forward direction coupled signal of one of them frequency band to be measured or reverse coupled signal carries out
Output.The forward direction coupled signal or reverse coupled signal that radio frequency filter circuit 16 is used to input on input radio frequency switch 12 carry out band
Pass filter processing, inhibits out of band signal, obtains corresponding narrow frequency bands signal, narrow frequency bands signal according to detection segmentation require into
Capable preset, GSM, CDMA, DCS, PHS including being not limited to 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 for carrying out radio frequency amplification to the narrow frequency bands signal of 26 output of output RF switch combination, and exports to power detection circuit
30, radio frequency amplifying circuit 27 is wideband gain amplifier, for compensating the loss of radio frequency link.Power detection circuit 30 for pair
Narrow frequency bands signal carries out detection, forms voltage signal, and power detection circuit 30 is an average detector.Operational amplification circuit 31
For amplifying 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 filtered voltage signal is amplified, converts digitized voltage signal, modulus for voltage signal
Conversion circuit 32 is a 12bit analog-digital converter, can convert analog signals into digital signal.Temperature sensor 35 is for detecting
Environment temperature inside device, and the temperature value that will test is sent to single-chip microcontroller 33, temperature sensor 35 is linear temperature inspection
Survey device.
Single-chip microcontroller 33 be used for control input radio frequency switch combination 12 and export RF switch combination 26 signal path gating,
Preceding Xiang Gong is calculated for comparing digitized voltage signal with the power meter of corresponding preset narrow frequency bands signal
Rate value or backward power value, compensated for the temperature value and preset temperature according to detection it is several to obtained forward power value or reversed
Performance number carries out performance number compensation, for voltage standing wave ratio being calculated, for taking turns according to forward power value and backward power value
The forward direction coupled signal and reverse coupled signal for asking each frequency band to be measured obtain corresponding voltage standing wave ratio, and wherein preset temperature is mended
Repaying number is the statistical data obtained by batch experiment.Memory 34 is used to store the power meter, preceding of preset narrow frequency bands signal
To performance number, backward power value, the voltage standing wave ratio and preset temperature being calculated according to forward power value and backward power value
Degree compensation number.
In the present embodiment, broadband couple device circuit 11 be two channel wideband sling coupling circuit, before being respectively provided with two pairs to
Reverse coupled output port meets the requirement of broad-band antenna segmentation voltage standing wave ratio detection.As shown in connection with fig. 3, input radio frequency is opened
Close the SP8T RF switch that combination 12 includes SP4T RF switch 12a and connect with the output end of SP4T RF switch 12a
12b, SP4T RF switch 12a have 4 input terminals and an output end, and 4 input terminals are respectively 121 input terminals, 122 defeated
Enter end, 123 input terminals and 124 input terminals, SP8T RF switch 12b has an input terminal 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-isolation is strong, ensure that between each signal path
Isolation.As shown in connection with fig. 4, output RF switch combination 26 is a SP8T RF switch, defeated with an input terminal and 8
Outlet, 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.As shown in connection with fig. 5, radio frequency filter circuit 16 is rf filtering array, is filtered by multiple radio frequencies
Wave device composition, in the present embodiment, specifically, rf filtering array is made of 16 radio-frequency filters, respectively radio-frequency filter
A, radio-frequency filter b, radio frequency set filter c ... ... radio-frequency filter h.
With reference to Fig. 6, a kind of multi-system access platform voltage standing wave ratio detection method provided by the invention, including following step
It is rapid:
S1, pass through 11 coupling broadband signal of broadband couple device circuit, the forward and backward coupling letter of the multiple frequency bands to be measured of output
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 that one of them frequency band to be measured is gated by input radio frequency switch combination 12 are exported,
For example input radio frequency switch combination 12 gates the forward direction coupled signal of first frequency band to be measured, then input radio frequency switch combination
121 input terminals of SP4T RF switch 12a are connected, 125 outputs of the SP8T RF switch 12b of input radio frequency switch combination terminate
It is logical.
S3, bandpass filtering treatment is carried out to coupled signal to preceding by radio frequency filter circuit 16, obtains corresponding narrowband frequency
Band signal.
S4, it is exported by 26 gating narrow frequency bands signal of output RF switch combination, such as output 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, forms voltage signal.
S6, filtering is amplified to voltage signal by operational amplification circuit 31.
S7, analog-to-digital conversion process is carried out by 32 pairs of the analog to digital conversion circuit filtered voltage signals of amplification, voltage is believed
Number it is converted into digitized voltage signal.
S8, the power meter of digitized voltage signal and preset narrow frequency bands signal is compared by meter by single-chip microcontroller 33
It calculates, obtains forward power value.
S81, by the environment temperature inside 35 detection device of temperature sensor, by single-chip microcontroller 33 according to the temperature of detection
With preset temperature compensate it is several performance number compensation is carried out to obtained forward power value or backward power value, preset temperature compensates number
According to detection accuracy can be improved.
S9, by the gating of input radio frequency switch combination 12 it is corresponding before carry out to the reverse coupled signal of coupled signal it is defeated
Out, then 121 input terminals of the SP4T RF switch 12a of input radio frequency switch combination 12 connect, input radio frequency switch combination 12
126 output ends of SP8T RF switch 12b are connected.It repeats step S3- step S8 and substitutes the forward direction coupled signal of step S3
For reverse coupled signal, to obtain backward power value in step s 8, by single-chip microcontroller 33 according to forward power value and reversed
Voltage standing wave ratio is calculated in performance number.
S10, by 33 poll of single-chip microcontroller second, third, the 4th frequency band to be measured forward and backward coupled signal,
Obtain corresponding voltage standing wave ratio.With this cyclic polling, poll is carried out by a certain period of time interval, polling time interval requirement
26 switch time delay, 30 response time of power detection circuit, temperature are combined with input radio frequency switch combination 12, output RF switch
35 sample temperature time of sensor and the calculating time of single-chip microcontroller 33 match.When poll, the signal path of gating is connected, for choosing
Logical signal path is closed.
The present invention is used as signal path selection switch by input radio frequency switch combination 12 and output RF switch combination 26,
It gates the forward and reverse coupled signal of one of them frequency band to be measured, and is obtained by the processing of radio frequency filter circuit 16 corresponding narrow
Band band signal, the narrow frequency bands signal after radio frequency amplification, power detection, amplification filtering, analog-to-digital conversion, passes through single-chip microcontroller 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
Voltage standing wave ratio is calculated in value and backward power value, then passes through the forward and backward coupling of each frequency band to be measured of 33 poll of single-chip microcontroller
Signal is closed, corresponding voltage standing wave ratio is obtained, to realize the detection of broad-band antenna segmentation voltage standing wave ratio, detection accuracy is high,
Integrated level is high, and high reliablity is at low cost.
Above embodiments only express the preferred embodiment of the present invention, and the description thereof is more specific and detailed, but can not
Therefore limitations on the scope of the patent of the present invention are interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, such as special to the difference in each embodiment
Sign is combined, and these are all within the scope of protection 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: the following steps are included:
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, obtains 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, forms voltage signal；
S6, filtering is amplified to the voltage signal；
S7, the voltage signal filtered to amplification carry out analog-to-digital conversion process, convert digitlization for the voltage signal
Voltage signal；
S8, the power meter of the digitized voltage signal and preset narrow frequency bands signal is compared into calculatings, obtain it is preceding to
Performance number；
The reverse coupled signal of the corresponding forward direction coupled signal of S9, gating is exported, and is repeated step S3- step S8 and will be walked
The forward direction coupled signal of rapid S3 is replaced by the reverse coupled signal, so that backward power value is obtained in step s 8, according to institute
Forward power value and backward power value are stated, 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.
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: the environment temperature inside detection device, according to the temperature of detection and preset
Temperature-compensating number carries out performance number compensation to obtained forward power value or backward 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 a certain period of time interval.
5. a kind of multi-system access platform voltage standing wave ratio detection device, it is characterised in that: include:
Broadband couple device circuit is used for coupling broadband signal, and exports the forward and backward coupled signal of multiple frequency bands to be measured；
Input radio frequency switch combination, for gating the forward direction coupled signal or reverse coupled signal of one of them frequency band to be measured
It is exported；
Radio frequency filter circuit, for the forward direction coupled signal of input radio frequency switch input or reverse coupled signal to be carried out band
Pass filter processing, obtains corresponding narrow frequency bands signal；
RF switch combination is exported, is exported for gating the narrow frequency bands signal；
Power detection circuit forms voltage signal for carrying out detection to the narrow frequency bands signal；
Operational amplification circuit, for amplifying filtering to the voltage signal；
Analog to digital conversion circuit, for the filtered voltage signal progress analog-to-digital conversion process is amplified, the voltage to be believed
Number it is converted into digitized voltage signal；
Single-chip microcontroller is used for for controlling the input radio frequency switch combination and exporting the signal path gating of RF switch combination
The digitized voltage signal is compared with the power meter of corresponding preset narrow frequency bands signal, preceding Xiang Gong is calculated
Rate value or backward power value, it is each for poll for voltage standing wave ratio to be calculated according to forward power value and backward power value
The forward direction coupled signal and reverse coupled signal of a frequency band to be measured obtain corresponding voltage standing wave ratio.
6. multi-system access platform voltage standing wave ratio detection device according to claim 5, it is characterised in that: further include penetrating
Frequency amplifying circuit for carrying out radio frequency amplification to the narrow frequency bands signal of the output RF switch combination output, and exports extremely
The power detection circuit.
7. multi-system access platform voltage standing wave ratio detection device according to claim 5, it is characterised in that: further include temperature
Sensor is spent, for the environment temperature inside detection device, and the temperature value that will test is sent to the single-chip microcontroller, the monolithic
Machine, which is used to be compensated according to the temperature value and preset temperature of detection, several carries out power to obtained forward power value or backward power value
Value complement is repaid.
8. multi-system access platform voltage standing wave ratio detection device according to claim 7, it is characterised in that: further 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
The voltage standing wave ratio and preset temperature that backward power value is calculated compensate number.
9. multi-system access platform voltage standing wave ratio detection device according to claim 5, it is characterised in that: the broadband
Coupling circuit are two channel wideband sling coupling circuit, are respectively provided with two pairs of forward and backward coupled output ports.
10. multi-system access platform voltage standing wave ratio detection device according to claim 5, it is characterised in that: described defeated
Entering radio frequency switch combination includes SP4T RF switch and the SP8T RF switch connecting with the output end of SP4T RF switch, institute
It states output RF switch group and is combined into a SP8T RF switch.
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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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| CN106877886B (en) * | 2017-01-19 | 2019-03-15 | 深圳国人通信股份有限公司 | Multi-system access platform voltage standing wave ratio detection method and device |
| 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 |
| CN110113117B (en) * | 2019-05-15 | 2022-02-15 | 深圳国人科技股份有限公司 | Method and device for counting LTE TDD signal power |
| CN110266403B (en) * | 2019-06-28 | 2022-03-25 | 京信网络系统股份有限公司 | Signal power detection method, device and system |
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