CN108646097A - A kind of insertion loss test method and system - Google Patents
A kind of insertion loss test method and system Download PDFInfo
- Publication number
- CN108646097A CN108646097A CN201810372374.4A CN201810372374A CN108646097A CN 108646097 A CN108646097 A CN 108646097A CN 201810372374 A CN201810372374 A CN 201810372374A CN 108646097 A CN108646097 A CN 108646097A
- Authority
- CN
- China
- Prior art keywords
- power meter
- input
- insertion loss
- output unit
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
A kind of insertion loss test method and system, belong to loss test technical field.System includes radio frequency sending set, the first power meter, the second power meter, switching gate circuit；The radio frequency sending set connects the first power meter through RF cable, between first power meter and second power meter switching gate circuit is connected each by RF cable, for the switching gate circuit to access Devices to test, first power meter and second power meter are respectively used to the input-output power of detection Devices to test.Method based on above system realize, including：Devices to test access insertion loss is tested system by step S01 using switching gate circuit；Step S02 obtains the performance number of the first power meter and the second power meter, and calculates insertion loss Δ S according to above-mentioned performance number1.The present invention may be implemented transmitter and load under high-power matching status, the insertion loss of on-line measurement Devices to test, while also improve testing efficiency.
Description
Technical field
The present invention relates to loss test technical field more particularly to a kind of insertion loss test methods and system.
Background technology
Currently, method is mainly the following to the measurement of insertion loss, for example, by Network Analyzer to equipment under test
Insert loss is carried out, or insert loss etc. is carried out to equipment under test by termination type power meter, radio-frequency signal source.
And these method common problems, the measurement for being exactly partial to passive system are primarily adapted for use in small-power radio frequency and set in other words
It is standby to measure.It basically can not realize transmitter and load under high-power matching status, the insertion loss of high-power Devices to test is surveyed
Amount.
Fig. 1 shows that existing network analyzer carries out insert loss to equipment under test.The ports RF of Network Analyzer
It is connect with equipment under test DUT through RF cable.Network Analyzer is expensive, and the power that RF is born port is very limited, and
And Network Analyzer is relatively suitble to the insert loss of some passive devices, and the radio frequency for being operated in high-power state is set
It is standby, it is difficult to accomplish online insert loss.
Fig. 2 shows existing termination type power meter, radio-frequency signal sources to carry out insert loss to equipment under test.It is tested to set
Standby DUT is separately connected signal source, power meter at its both ends by radio-frequency cable.In the testing scheme, need to be sent out with signal source
Go out desired performance number, then signal is received by power meter, measures the power difference of power meter, the power difference
The difference of both performance numbers received with power meter for the expectation performance number that signal source is sent out, and then obtain inserting for Devices to test
Enter loss.The power meter under this scheme is mostly termination type power meter at present, although the precision of termination type power meter is very high, work(
Rate range is than relatively limited.When Devices to test DUT is operated under high-power state, this scheme is difficult to accomplish that online insertion loss is surveyed
Amount.
Patent of invention CN105049082B discloses a kind of RF cable line loss measuring system and measurement method, specific open
Signal generator, power meter, the first power divider, the second power divider, rf inputs mouth array and radio frequency output
Array of ports.The signal generator is connected to the input port of rf inputs mouth array, institute by the first power divider
State the radio frequency output port that power meter is connected to radio frequency output port array by the second power divider, RF cable choosing to be measured
It is connected to selecting property between its both ends interface type rf inputs mouth to match and radio frequency output port.The patent of invention
Insert loss is carried out to equipment under test using termination type power meter shown in Fig. 2 and radio-frequency signal source, is carried there are above-mentioned
And defect.And the system additionally uses power divider, power divider will produce several db in every distribution signal all the way and decline
Subtract, with the increase loss meeting bigger of port number, leverages the measurement accuracy of insertion loss.
Application for a patent for invention CN105978623A discloses a kind of optical fiber connector insertion loss computing system, and specific public
Source ends, standard adapter, luminous power calculator are opened；Standard testing bar line is connected between source ends and standard adapter,
Tested wire jumper is connected between standard adapter and luminous power calculator.The invention is also to use measurement method shown in Fig. 2, is deposited
Stating the defect referred to.
Invention content
The present invention is in view of the problems of the existing technology, it is proposed that a kind of achievable transmitter and loads high-power matching shape
The insertion loss of on-line measurement Devices to test and the high insertion loss test method and system of testing efficiency under state.
The technical scheme is that：
A kind of insertion loss of the present invention tests system, including radio frequency sending set, the first power meter, the second power meter, switch
Gating circuit；The radio frequency sending set connects the first power meter, first power meter and second power through RF cable
The switching gate circuit is connected each by RF cable, the switching gate circuit is accessing Devices to test between meter；
First power meter and second power meter are respectively used to the input-output power of detection Devices to test.
Preferably, the switching gate circuit includes single input and multi-output unit, multiple input single output unit, more than first
Road input-output unit, the second multichannel input-output unit, third multichannel input-output unit, multiple RF repeating terminals；Institute
State single input and multi-output unit input terminal connect the first power meter, the single input and multi-output unit output end connection described in
The output end of the input terminal of first multichannel input-output unit, the first multichannel input-output unit is separately connected RF repeating
The input terminal of terminal and third multichannel input-output unit；It is more that the input terminal of second multichannel input-output unit is separately connected third
The output end and RF repeating terminal of road input-output unit, the second multichannel input-output unit output end connection described in
The input terminal of multiple input single output unit；The output end of the multiple input single output unit connects second power meter.
Preferably, the input of the single input and multi-output unit, the multiple input single output unit, first multichannel is defeated
Go out unit, the second multichannel input-output unit, the third multichannel input-output unit and is all made of RF switch.
Preferably, the first multichannel input-output unit includes multiple first single-pole double-throw switch (SPDT)s, each first is single
The stationary contact of double-pole double throw switch connects an output end of the single input and multi-output unit, and each first single-pole double-throw switch (SPDT) moves
Contact is separately connected an a kind of input terminal of RF repeating terminal and third multichannel input-output unit；The second multichannel input
Output unit includes multiple second single-pole double-throw switch (SPDT)s, and the movable contact of each second single-pole double-throw switch (SPDT) is separately connected a kind of radio frequency
One output end of conversion terminal and third multichannel input-output unit, each second single-pole double-throw switch (SPDT) stationary contact connection described in
The input terminal of multiple input single output unit
Preferably, first power meter, second power are calculated as feed-through type power meter.
Preferably, the RF repeating terminal includes SMAM, SMAF, RP-SMAM, RP-SMAF.
Preferably, system further includes control terminal, serial server；The control terminal through the serial server respectively with
First power meter, second power meter, switching gate circuit communication connection；The control terminal is controlling serial ports
Server obtains the performance number of the first power meter and the second power meter, and carries out insertion loss calculating；The control terminal also passes through
Serial server gates the switching gate circuit.
Preferably, system further includes the terminal load being connect with second power meter.
A kind of insertion loss test method is suitable for above-mentioned insertion loss and tests system, the method includes：
Devices to test access insertion loss is tested system by step 1 using switching gate circuit；
Step 2 obtains the performance number of the first power meter and the second power meter, and is calculated according to above-mentioned performance number and be inserted into damage
Consume Δ S1。
Preferably, the method further includes the progress insertion loss calibration before step 1：Existed using switching gate circuit
The test circuit that insertion loss test system is gated in the case of not accessing Devices to test, obtains current first power meter and second
The performance number of power meter, and insertion loss calibration value Δ is calculated according to the performance number of current first power meter and the second power meter
S0；The method further includes after step 2, according to insertion loss Δ S1With insertion loss calibration value Δ S0Difference obtain most
Whole insertion loss Δ S.
The invention has the advantages that：
Insertion loss test method and system of the present invention are measured at the both ends of Devices to test using double power meters, can
Suitable for powerful device insert loss, testing efficiency is high；In addition it uses switching gate circuit that can connect different type SMA to penetrate
The connection of frequency connector is cumbersome, simplifies calibration operation, improves testing efficiency.
In addition, control terminal controls gating switch gating circuit by serial server carries out loss test so that switch number
It measures less, connection line simplicity, and carries out online switch and control.Real-time synchronization processing first, second may be implemented in serial server
The data of power meter acquire.Generally all the RF selection switch of very little, the loss brought are opposite using Insertion Loss for switching gate circuit
Compare fixation, all in 1dB hereinafter, being dominant in measurement accuracy.Input terminal performance number, which is read, by power meter substitutes traditional preset
Performance number improves precision.
Description of the drawings
Fig. 1 is the functional block diagram that existing network analyzer carries out equipment under test insert loss；
Fig. 2 is existing termination type power meter, radio-frequency signal source to equipment under test progress insert loss functional block diagram；
Fig. 3 is the functional block diagram that a kind of insertion loss of the present invention is tested under one embodiment of system；
Fig. 4 is the circuit diagram of switching gate circuit in Fig. 3；
Fig. 5 is the functional block diagram that a kind of insertion loss of the present invention is tested under another embodiment of system；
Fig. 6 is the flow diagram under a kind of one embodiment of insertion loss test method of the present invention；
Fig. 7 is the flow diagram under a kind of another embodiment of insertion loss test method of the present invention.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Existing insertion loss test method is by Network Analyzer or termination type power meter, radio-frequency signal source to quilt
Measurement equipment carries out insert loss, these methods are suitble to passive system or small-power radio-frequency apparatus to measure, and basically can not
It realizes transmitter and loads under high-power matching status, the insert loss of high-power Devices to test.For this purpose, the present invention proposes
A kind of powerful device insertion loss test method and system.
Embodiment one
Fig. 3 shows that a kind of insertion loss tests the functional block diagram under one embodiment of system.The insertion loss test
System includes radio frequency sending set, the first power meter, the second power meter, switching gate circuit.The radio frequency sending set is through radio frequency line
Cable connect the first power meter, between first power meter and second power meter each by RF cable connect described in open
Gating circuit is closed, the switching gate circuit is accessing Devices to test.
The radio frequency sending set sends the radiofrequency signal of special frequency channel by RF cable to first power meter, described
Radio frequency sending set refers mainly to powerful radio-frequency signal source, is used for analog transmissions base station or powerful radio station.First work(
Rate meter is respectively arranged on switching gate circuit both ends with second power meter, once the access of gating access Devices to test,
Then Devices to test access insertion loss tests system, and first power meter can be used for measuring with for the moment with second power meter
The input/output signal power at quarter.First power meter is with second power meter preferably by formula power meter.It is described logical
Formula power meter is crossed for testing forward power and backward power, test frequency 300MHz-3800MHz.It is exported by calculating
The difference of power (dBm), input power (dBm), you can obtain the insertion loss value of Devices to test.
Earlier application patent of invention CN105049082B using termination type power meter and radio-frequency signal source to equipment under test into
Row insertion loss, insertion loss are emitted through the preset transmission power of the first power divider according to radio frequency sending set,
With the reception power for receiving the power meter reading for returning to radiofrequency signal from the second power divider, the difference of the two obtains.For
The insertion loss of powerful device is sizable, such as received according to preset transmission power and terminal the difference of power come
It calculates, largely effects on insert loss precision.And two power meters energy are arranged in real time, simultaneously at Devices to test both ends in the present invention
The input-output power of access device is detected, Devices to test insertion loss is then calculated, measurement accuracy higher is set suitable for high-power
Have source detection.
Whether the switching gate circuit will be in Devices to test access insertion loss test system for gating.The switch
Gating circuit can be a simple circuit with selecting switch, if the switching gate circuit includes for by Devices to test
The selecting switch being connected to the first power meter and another selection for Devices to test to be connected to the second power meter are opened
It closes.When being closed two selecting switch, then Devices to test is linked into insertion loss test system, can pass through the first power
The real time measure value of meter and the second power meter obtains Devices to test insertion loss value to calculate.
In view of the interface form of current radio frequency coaxial cables mainly has four classes, as SMAM (needle in internal thread), SMAF are (outer
Threaded interior hole), RP-SMAM (internal thread endoporus), RP-SMAF (needle in external screw thread).Connected based on different type SMA radio frequency connectors
Cumbersome problem is connect, the present invention, which designs the switching gate circuit, thus can optionally be arranged the progress of multiclass RF repeating terminal
Connection.With reference to Fig. 4, the switching gate circuit includes single input and multi-output cell S W1, multiple input single output cell S W3, first
Multichannel input-output unit SW4, the second multichannel input-output unit SW5, third multichannel input-output unit SW2, multiple radio frequencies
Conversion terminal SMA.Specifically, the input terminal of the single input and multi-output cell S W1 connects the first power meter, and the single input is more
The output end of output unit SW1 connects the input terminal of the first multichannel input-output unit SW4, and the first multichannel input is defeated
The output end for going out cell S W4 is separately connected the input terminal of RF repeating terminal SMA and third multichannel input-output unit SW2；The
The input terminal of two multichannel input-output unit SW5 is separately connected the output end of third multichannel input-output unit SW2 and radio frequency turns
The output end of connecting terminal SMA, the second multichannel input-output unit SW5 connect the defeated of the multiple input single output cell S W3
Enter end, the output end of the multiple input single output cell S W3 connects second power meter.The RF repeating terminal can be set
It is equipped with multiple types, including above-mentioned four type or three kinds or two kinds arbitrary arbitrary.The RF repeating terminal can have it is multiple,
And the quantity of any kind is indefinite.Wherein, the RF repeating terminal of the first Multiinputoutput cell S W4 output ends connection
The quantity of SMA is identical as the quantity of RF repeating terminal SMA that the second Multiinputoutput cell S W5 input terminals connect,
The quantity of the middle congener RF repeating terminal SMA in both sides can it is identical also can be different.The first Multiinputoutput cell S W4
The radio frequency of the quantity of the RF repeating terminal SMA of output end connection/second Multiinputoutput cell S W5 input terminals connection turns
The quantity of connecting terminal SMA determines the input of the second input-output unit SW5 described in the first Multiinputoutput cell S W4/
Output bars number also determines the input and output item number of third Multiinputoutput cell S W2；It further determined single input and multi-output
The output bars number of cell S W1 and the input item number of multiple input single output cell S W3, and item number and the first Multiinputoutput list
The quantity of the RF repeating terminal SMA of first SW4 output ends connection/second Multiinputoutput cell S W5 input terminals connection
The quantity of RF repeating terminal SMA is identical.
Power divider or power combing may be selected in the single input and multi-output unit or the multiple input single output unit
Device.However, being power divider or power combiner, a few dB decaying are will appear in every distribution signal all the way, with port
Quantity increases loss and can also increase.For this purpose, single input and multi-output unit of the present invention or the multiple input single output unit are preferably
RF selection switch.Such as Fig. 4, the RF selection switch is that hilted broadsword throws RF selection switch more.The Insertion Loss of RF selection switch
General all very littles, the loss brought is relatively fixed, all in 1dB hereinafter, being dominant in measurement accuracy.
The first multichannel input-output unit SW4, the second multichannel input-output unit SW5, the third multichannel
The first port matrix control module disclosed in first patent of invention CN105049082B can be used in input-output unit SW2, or
Person's first port matrix control module and second port matrix control module.But coordinate the list defeated using the matrix control module
Enter multiple output units, there are number of switches accesses for the switching gate circuit of multiple input single output unit composition excessively, line complexity.
For this purpose, the first multichannel input-output unit may be designed as including multiple first single-pole double-throw switch (SPDT) K11, K21, K31, K41,
The stationary contact of each first single-pole double-throw switch (SPDT) connects an output end of the single input and multi-output unit, and each first hilted broadsword is double
The movable contact of throw switch K11, K21, K31, K41 are separately connected a kind of RF repeating terminal SMA and third multichannel input and output list
An input terminal of first SW2.The second multichannel input-output unit SW5 includes multiple second single-pole double-throw switch (SPDT) K12, K22,
The movable contact of K32, K42, each second single-pole double-throw switch (SPDT) K12, K22, K32, K42 are separately connected a kind of RF repeating terminal
An output end of SMA and third multichannel input-output unit SW2, each second single-pole double-throw switch (SPDT) K12, K22, K32, K42's
Stationary contact connects the input terminal of the multiple input single output cell S W3.
When Devices to test needs to be linked into insertion loss test system, it is single that operating personnel gate single input output manually
First SW1 and multiple input single output cell S W3 corresponding radio-frequency channel SW1n and SW3n (n=1,2,3,4), then control defeated more than first
Entering output unit SW4 and the second Multiinputoutput cell S W5, only there are one the selected conductings of SMA terminals respectively.For example, by be measured
Equipment is connected between the SMAF terminals of the SMAM of the first Multiinputoutput cell S W4, the second Multiinputoutput cell S W5, behaviour
Make personnel and controls connection SW1-1 first<---->K11-1, K22-1<---->Two sections of accesses of SW3-2, then by Devices to test across
It is connected between SMA terminals.Assuming that in such cases, the reading of the first power meter is P3 (units:), W the reading of the second power meter
For P4 (units：W), then Δ S1=10log (P4/P3) (unit：dB).
If it is considered that system insertion loss Δ S0Presence, then carried out using switching gate circuit shown in Fig. 4
Insertion loss calibration is carried out before insert loss.The personnel of being operated first manually control single input output unit SW1 and multi input
Single output unit SW3 gates corresponding radio-frequency channel SW1n and SW3n (n=1,2,3,4)；Then the first Multiinputoutput is controlled
Cell S W4 and the second Multiinputoutput cell S W5 gate corresponding switch Kn1 and Kn2 (n=1,2,3,4), and are connected non-
SMA terminal positions；Then control third Multiinputoutput cell S W2 gates corresponding I/O channel, is achieved from SW1
A complete radio frequency path is formed to SW3.
Illustrate the above process that consideration system insertion loss Δ S0 is measured, for example input and output of Devices to test
Terminal need to be connected to the SMAM of the first Multiinputoutput cell S W4, the second Multiinputoutput cell S W5 SMAF terminals it
Between, then needing to calibrate access to be measured before measuring, i.e., operating personnel select RF switch conducting, and form one
Radio frequency path：SW1-1<---->K11-2<---->M1-1<---->M2-2<---->K22-2<---->SW3-2.Due to using
The RF switch of minimum insertion loss, therefore, for powerful device, link attenuation when above-mentioned switch conduction can be with
It almost ignores, is approximately equal to the Insertion Loss Δ S when engagement of SMAM and SMAF terminals0.Assuming that the first power meter is read in such cases
Number is P1 (units：W), the second power meter reading is P2 (units：W), then Δ S0=10log (P2/P1) (unit：dB).It
Afterwards again by Devices to test access insertion loss test systematic survey insertion loss Δ S1=10log (P4/P3) (unit：dB).Then,
Final insertion loss is Δ S=Δs S1-ΔS0=10log ((P1 × P4)/P2 × P3)) (unit：dB).
In order to avoid end reflection is larger, signal reflex damages instrument and system back, and system further includes and described second
The terminal load of power meter connection.For accessing Devices to test, the other end is negative to connect terminal for second power meter one end
It carries, to play the role of matched termination.
Embodiment two
In order to realize that online real-time synchronization handles the data acquisition, simplified connection line and intelligent control insertion damage of each section
Consumption test, on the basis of embodiment one, the system of embodiment two further includes control terminal, serial server.The control terminal warp
The serial server is connect with first power meter, second power meter, the switching gate circuit communication respectively.
Fig. 5 shows a kind of another embodiment of insertion loss test system of the present invention.The control terminal can be control
The smart machine of computer processed or the hand-held pad of other such as mobile phones.The control terminal passes through Ethernet and the serial port service
Device communicates, to control the performance number (unit that serial server obtains the first power meter and the second power meter：W), and inserted
Enter loss calculation.This is compared read data and calculate with the operating personnel of embodiment one for, efficiency faster, accuracy rate it is high, and
It is convenient.In addition, the control terminal also assigns the conducting of the RF switch of instruction control switching gate circuit by serial server
With cut-off.
The serial server includes multiple serial ports, can be RS232, and type serial ports without being limited thereto.The serial ports clothes
Rs 232 serial interface signal is ultimately converted to ethernet signal by business device, and remote serial port control may be implemented in this way and access, including readout power
Meter as a result, and control RF switch matrix respective switch conducting and cut-off.
When Devices to test needs to be linked into insertion loss test system, control terminal passes through bus marco, and such as RS232 is controlled
System gating single input output unit SW1 and multiple input single output cell S W3 corresponding radio-frequency channel SW1n and SW3n (n=1,2,
3,4), then bus marco the first Multiinputoutput cell S W4 and the second Multiinputoutput cell S W5 only there are one the ends SMA respectively
The selected conducting of son.For example, Devices to test to be connected to SMAM, the second Multiinputoutput of the first Multiinputoutput cell S W4
Between the SMAF terminals of cell S W5, operating personnel control first connects SW1-1<---->K11-1, K22-1<---->SW3-2 two
Then Devices to test is connected across between SMA terminals by Duan Tonglu.Assuming that in such cases, the reading of the first power meter is P3 (single
Position:), W the reading of the second power meter is P4 (units：W), then Δ S1=10log (P4/P3) (unit：dB).
If it is considered that system insertion loss Δ S0Presence, then carried out using switching gate circuit shown in Fig. 4
Insertion loss calibration is carried out before insert loss.Control terminal is by bus marco first, as RS232 control single input outputs are single
First SW1 and multiple input single output cell S W3 gate corresponding radio-frequency channel SW1n and SW3n (n=1,2,3,4)；Then total line traffic control
Make the first Multiinputoutput cell S W4 and the second Multiinputoutput cell S W5 gate corresponding switch Kn1 and Kn2 (n=1,2,
3,4) it, and is connected in non-SMA terminal positions；Then bus marco third Multiinputoutput cell S W2 gates corresponding input
One complete radio frequency path of formation from SW1 to SW3 is achieved in output channel.
Illustrate the above process that consideration system insertion loss Δ S0 is measured, for example input and output of Devices to test
Terminal need to be connected to the SMAM of the first Multiinputoutput cell S W4, the second Multiinputoutput cell S W5 SMAF terminals it
Between, then needing to calibrate access to be measured before measuring, i.e., operating personnel select RF switch conducting, and form one
Radio frequency path：SW1-1<---->K11-2<---->M1-1<---->M2-2<---->K22-2<---->SW3-2.Due to using
The RF switch of minimum insertion loss, therefore, for powerful device, link attenuation when above-mentioned switch conduction can be with
It almost ignores, is approximately equal to the Insertion Loss Δ S when engagement of SMAM and SMAF terminals0.Assuming that the first power meter is read in such cases
Number is P1 (units：W), the second power meter reading is P2 (units：W), then Δ S0=10log (P2/P1) (unit：dB).It
Afterwards again by Devices to test access insertion loss test systematic survey insertion loss Δ S1=10log (P4/P3) (unit：dB).Then,
Final insertion loss is Δ S=Δs S1-ΔS0=10log ((P1 × P4)/P2 × P3)) (unit：dB).
Embodiment three
Fig. 6 shows an a kind of embodiment of insertion loss test method of the present invention.The test method is suitable for implementing
The insertion loss of example one or embodiment two tests system, and directly measures Devices to test access insertion loss using above system and survey
The insertion loss value of test system.
Specifically, which includes：
Devices to test access insertion loss is tested system by step 1 S10 using switching gate circuit；
Step 2 S20 obtains the performance number of the first power meter and the second power meter, and is calculated and be inserted into according to above-mentioned performance number
Δ S is lost1。
Specific test method instantiation procedure is with reference to embodiment one or embodiment two.
Example IV
Fig. 7 shows a kind of another embodiment of insertion loss test method of the present invention.The test method is suitable for real
It applies the insertion loss test system of example one or embodiment two, and is measured in the case where carrying out insertion loss calibration using above system to be measured
Equipment accesses the insertion loss value of insertion loss test system.
The method of example IV carries out insertion loss calibration compared to the method for embodiment three before step 1, final to insert
Entering loss value need to consider that calibration value side is accurate.
Specifically, the method includes：
Step S01, insertion loss calibration：Insertion is gated in the case where not accessing Devices to test using switching gate circuit
The test circuit of loss test system；The performance number of current first power meter and the second power meter is obtained, and according to current first
The performance number of power meter and the second power meter calculates insertion loss calibration value Δ S0；
Devices to test access insertion loss is tested system by step S02 using switching gate circuit；
Step S03 obtains the performance number of the first power meter and the second power meter, and is calculated according to above-mentioned performance number and be inserted into damage
Consume Δ S1；
Step S04, according to insertion loss Δ S1With insertion loss calibration value Δ S0Difference acquisition be finally inserted into loss Δ S.
Specific test method instantiation procedure is with reference to embodiment one or embodiment two.
It should be understood by those skilled in the art that the embodiment of the present invention shown in foregoing description and attached drawing is only used as illustrating
And it is not intended to limit the present invention.The purpose of the present invention completely effectively realizes.The function and structural principle of the present invention is in reality
It applies and shows and illustrate in example, under without departing from the principle, embodiments of the present invention can have any deformation or modification.
Claims (10)
1. a kind of insertion loss tests system, which is characterized in that including radio frequency sending set, the first power meter, the second power meter, open
Close gating circuit；The radio frequency sending set connects the first power meter, first power meter and second work(through RF cable
The switching gate circuit is connected each by RF cable, the switching gate circuit is accessing to be measured set between rate meter
Standby, first power meter and second power meter are respectively used to detect the input-output power of Devices to test.
2. a kind of insertion loss according to claim 1 tests system, which is characterized in that the switching gate circuit includes
Single input and multi-output unit, multiple input single output unit, the first multichannel input-output unit, the second multichannel input-output unit,
Third multichannel input-output unit, multiple RF repeating terminals；The input terminal of the single input and multi-output unit connects the first work(
Rate meter, the output end of the single input and multi-output unit connect the input terminal of the first multichannel input-output unit, and described
The output end of one multichannel input-output unit is separately connected the input terminal of RF repeating terminal and third multichannel input-output unit；
The input terminal of second multichannel input-output unit is separately connected output end and the RF repeating end of third multichannel input-output unit
Son, the output end of the second multichannel input-output unit connect the input terminal of the multiple input single output unit；It is described how defeated
The output end for entering single output unit connects second power meter.
3. a kind of insertion loss according to claim 2 tests system, which is characterized in that the single input and multi-output list
First, the described multiple input single output unit, the first multichannel input-output unit, the second multichannel input-output unit, institute
It states third multichannel input-output unit and is all made of RF switch.
4. a kind of insertion loss according to claim 2 tests system, which is characterized in that the first multichannel input and output
Unit includes multiple first single-pole double-throw switch (SPDT)s, and the stationary contact of each first single-pole double-throw switch (SPDT) connects the single input and multi-output
One output end of unit, the movable contact of each first single-pole double-throw switch (SPDT) are separately connected a kind of RF repeating terminal and third multichannel
One input terminal of input-output unit；The second multichannel input-output unit includes multiple second single-pole double-throw switch (SPDT)s, each
The movable contact of second single-pole double-throw switch (SPDT) is separately connected a kind of RF repeating terminal and the one of third multichannel input-output unit defeated
Outlet, the stationary contact of each second single-pole double-throw switch (SPDT) connect the input terminal of the multiple input single output unit.
5. a kind of insertion loss according to claim 1 tests system, which is characterized in that first power meter, described
Second power is calculated as feed-through type power meter.
6. a kind of insertion loss according to claim 4 tests system, which is characterized in that RF repeating terminal includes
SMAM、SMAF、RP-SMAM、RP-SMAF。
7. a kind of insertion loss according to claim 1 tests system, which is characterized in that system further includes control terminal, string
Mouth server；The control terminal through the serial server respectively with first power meter, second power meter, described open
Close gating circuit communication connection；The control terminal to control serial server obtain the first power meter and the second power meter work(
Rate value, and carry out insertion loss calculating；The control terminal also gates the switching gate circuit by serial server.
8. a kind of insertion loss according to claim 1 tests system, which is characterized in that system further includes and described second
The terminal load of power meter connection.
9. a kind of insertion loss test method is suitable for the insertion loss as described in any one of claim 1-8 and tests system,
It is characterized in that, the method includes：
Devices to test access insertion loss is tested system by step 1 using switching gate circuit；
Step 2 obtains the performance number of the first power meter and the second power meter, and calculates insertion loss Δ according to above-mentioned performance number
S1。
10. a kind of insertion loss test method according to claim 9, which is characterized in that the method further includes in step
Insertion loss calibration is carried out before rapid one：Insertion loss survey is gated in the case where not accessing Devices to test using switching gate circuit
The test circuit of test system obtains the performance number of current first power meter and the second power meter, and according to current first power meter
Insertion loss calibration value Δ S is calculated with the performance number of the second power meter0；The method further includes after step 2, according to slotting
Enter to be lost Δ S1With insertion loss calibration value Δ S0Difference acquisition be finally inserted into loss Δ S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372374.4A CN108646097A (en) | 2018-04-24 | 2018-04-24 | A kind of insertion loss test method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810372374.4A CN108646097A (en) | 2018-04-24 | 2018-04-24 | A kind of insertion loss test method and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108646097A true CN108646097A (en) | 2018-10-12 |
Family
ID=63747502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810372374.4A Pending CN108646097A (en) | 2018-04-24 | 2018-04-24 | A kind of insertion loss test method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108646097A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109890046A (en) * | 2019-01-30 | 2019-06-14 | 芯讯通无线科技（上海）有限公司 | The method and system of the chuck power loss of testing wireless communication equipment |
| CN110827530A (en) * | 2019-11-06 | 2020-02-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Acquisition device and acquisition method for reducing number of constant flow experiment data acquisition systems |
| CN112505376A (en) * | 2020-12-31 | 2021-03-16 | 西安开容电子技术有限责任公司 | Load for information leakage test of power line |
| CN113075460A (en) * | 2021-03-30 | 2021-07-06 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Method for testing equivalent dielectric constant and equivalent dielectric loss tangent value of communication cable |
| CN113992280A (en) * | 2021-10-25 | 2022-01-28 | 广州通则康威智能科技有限公司 | Insertion loss calibration device of broadband channel production and measurement clamp and working method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000019753A1 (en) * | 1998-09-28 | 2000-04-06 | Nokia Networks Oy | Method and apparatus for providing feeder cable insertion loss detection in a transmission system without interfering with normal operation |
| CN1831544A (en) * | 2005-03-11 | 2006-09-13 | 诺思路·格鲁曼公司 | Test method for RF cable testing to avoid long test cables |
| CN104062510A (en) * | 2014-07-07 | 2014-09-24 | 中国船舶重工集团公司第七二四研究所 | Method for measuring insertion loss of feeder line switching between two distant ports and enabling measuring errors to be smaller |
| CN105049082A (en) * | 2015-08-21 | 2015-11-11 | 上海斐讯数据通信技术有限公司 | Line loss measuring system and method of radio frequency cables |
| CN105738708A (en) * | 2016-04-06 | 2016-07-06 | 中国舰船研究设计中心 | Short wave antenna tuner insertion loss measuring device and method |
| CN107888232A (en) * | 2017-11-21 | 2018-04-06 | 广东欧珀移动通信有限公司 | Detect the method and test system, host computer, computer-readable recording medium of line loss |
-
2018
- 2018-04-24 CN CN201810372374.4A patent/CN108646097A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000019753A1 (en) * | 1998-09-28 | 2000-04-06 | Nokia Networks Oy | Method and apparatus for providing feeder cable insertion loss detection in a transmission system without interfering with normal operation |
| CN1831544A (en) * | 2005-03-11 | 2006-09-13 | 诺思路·格鲁曼公司 | Test method for RF cable testing to avoid long test cables |
| CN104062510A (en) * | 2014-07-07 | 2014-09-24 | 中国船舶重工集团公司第七二四研究所 | Method for measuring insertion loss of feeder line switching between two distant ports and enabling measuring errors to be smaller |
| CN105049082A (en) * | 2015-08-21 | 2015-11-11 | 上海斐讯数据通信技术有限公司 | Line loss measuring system and method of radio frequency cables |
| CN105738708A (en) * | 2016-04-06 | 2016-07-06 | 中国舰船研究设计中心 | Short wave antenna tuner insertion loss measuring device and method |
| CN107888232A (en) * | 2017-11-21 | 2018-04-06 | 广东欧珀移动通信有限公司 | Detect the method and test system, host computer, computer-readable recording medium of line loss |
Non-Patent Citations (1)
| Title |
|---|
| 王公浩等: "通过式功率计在通信测试中的应用", 《科技信息》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109890046A (en) * | 2019-01-30 | 2019-06-14 | 芯讯通无线科技（上海）有限公司 | The method and system of the chuck power loss of testing wireless communication equipment |
| CN110827530A (en) * | 2019-11-06 | 2020-02-21 | 水利部交通运输部国家能源局南京水利科学研究院 | Acquisition device and acquisition method for reducing number of constant flow experiment data acquisition systems |
| CN112505376A (en) * | 2020-12-31 | 2021-03-16 | 西安开容电子技术有限责任公司 | Load for information leakage test of power line |
| CN112505376B (en) * | 2020-12-31 | 2024-06-11 | 西安开容电子技术有限责任公司 | Load for power line information leakage prevention test |
| CN113075460A (en) * | 2021-03-30 | 2021-07-06 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Method for testing equivalent dielectric constant and equivalent dielectric loss tangent value of communication cable |
| CN113992280A (en) * | 2021-10-25 | 2022-01-28 | 广州通则康威智能科技有限公司 | Insertion loss calibration device of broadband channel production and measurement clamp and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108646097A (en) | A kind of insertion loss test method and system | |
| CN107817368B (en) | Multi-channel S parameter measuring device and measuring method | |
| CN107576879B (en) | Frequency sweep measuring device and method for estimating cable attribute | |
| CN106385287A (en) | Multi-channel T/R assembly testing device and method | |
| CN105190324A (en) | Vector network power meter | |
| CA2298338C (en) | A cable testing apparatus | |
| CN103592542B (en) | The interface intelligentized matching process of a kind of signal analysis based on switch matrix | |
| Hammou et al. | Considerations for on-wafer millimeter-wave measurements on thin ceramic substrate | |
| Staszek et al. | Broadband Measurements of $ S $-Parameters With the Use of a Single 8$\times $8 Butler Matrix | |
| CN109030960B (en) | S parameter testing method for 5G antenna filter integrated unit | |
| CN109782200A (en) | A kind of material measuring electromagnetic parameters method | |
| CN103929253B (en) | RF switching device for Type Approval DFS test | |
| CN205992026U (en) | A kind of port expansion device of vector network analyzer | |
| CN102818963B (en) | BALUN-free multichannel symmetrical data cable testing method and system | |
| CN112882070A (en) | Navigation satellite EIRP and stability test system and method | |
| CN218068204U (en) | Scattering parameter measuring circuit and radio frequency testing machine | |
| CN110058056A (en) | A kind of nonstandard test fixture | |
| CN107707315B (en) | Wireless product edge signal measurement method based on IQxel | |
| TW202301821A (en) | System and method for compensating for power loss due to a radio frequency (rf) signal probe mismatch in conductive signal testing | |
| CN114325312A (en) | Chip testing device, chip testing system and data acquisition method | |
| CN110441621A (en) | Measurement method, device, equipment and the storage medium of noise coefficient | |
| CN213903613U (en) | Integrated field uniformity calibration signal generation device | |
| CN104062510A (en) | Method for measuring insertion loss of feeder line switching between two distant ports and enabling measuring errors to be smaller | |
| CN111693754B (en) | Device, equipment and method for detecting PIN voltage of communication module | |
| CN220368715U (en) | Interference test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190416 Address after: 201616 No. 3666 Sixian Road, Songjiang District, Shanghai Applicant after: Shanghai Feixun Data Communication Technology Co., Ltd. Address before: 610100 125 Longquan Street Park Road, Longquanyi District, Chengdu, Sichuan. Applicant before: Sichuan fixun Information Technology Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181012 |
|
| RJ01 | Rejection of invention patent application after publication |