CN110174633B - Device parameter measuring method and system and terminal equipment - Google Patents

Device parameter measuring method and system and terminal equipment Download PDF

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CN110174633B
CN110174633B CN201910439434.4A CN201910439434A CN110174633B CN 110174633 B CN110174633 B CN 110174633B CN 201910439434 A CN201910439434 A CN 201910439434A CN 110174633 B CN110174633 B CN 110174633B
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load
tested
measurement
measured
parameters
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CN110174633A (en
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王一帮
霍晔
栾鹏
吴爱华
梁法国
张立飞
李彦丽
张晓云
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CETC 13 Research Institute
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references

Abstract

The invention provides a method, a system and a terminal device for measuring device parameters, wherein the method comprises the following steps: acquiring measurement data of a device to be measured and error parameters of a load traction measurement system, wherein the measurement data are voltage waves measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device to be measured; and calculating the parameters of the device to be measured by using the measurement data and the error parameters of the load traction measurement system. By acquiring the real-time measurement data of the device to be measured by the vector network analyzer, the parameters of the device to be measured can be calculated in real time, the influence of mechanical repeatability of the tuner is not resisted, and the measurement accuracy of the parameters of the device to be measured is improved.

Description

Device parameter measuring method and system and terminal equipment
Technical Field
The invention belongs to the technical field of semiconductors, and particularly relates to a device parameter measuring method, a device parameter measuring system and terminal equipment.
Background
The current load traction measurement system needs to use a vector network analyzer to pre-characterize the source and load impedance states of each frequency point in the self-calibration process due to a measurement model, then stores the source and load impedance states into software, configures an impedance tuner to be in the same impedance state in the actual test process, and calls out the stored data. At present, when a load traction measurement system is used for measuring a device to be measured, the mechanical repeatability of the load traction measurement system has a great influence on the measurement precision, so that the measurement of the load traction measurement system on the device to be measured is inaccurate, and finally calculated parameters of the device to be measured are inaccurate.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, a system, and a terminal device for measuring device parameters, so as to solve the problem that the parameter measurement of the current device is inaccurate.
A first aspect of an embodiment of the present invention provides a method for measuring a device parameter, including: acquiring measurement data of a device to be measured and error parameters of a load traction measurement system, wherein the measurement data are voltage waves measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device to be measured;
and calculating the parameters of the device to be measured by using the measurement data and the error parameters of the load traction measurement system.
A second aspect of the embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method for measuring device parameters as described above when executing the computer program.
A third aspect of an embodiment of the present invention provides a system, including: the system comprises a vector network analyzer, a source end impedance tuner, a load end impedance tuner, a source end double-directional coupler, a load end double-directional coupler and the terminal equipment;
the first end of the source end impedance tuner is used for connecting a source end signal source, the second end of the source end impedance tuner is connected with the first end of the source end double directional coupler, the second end of the source end double directional coupler is directly connected with a coaxial or waveguide device to be tested or connected with a first probe, and the first probe is used for connecting the device to be tested;
the first end of the load end impedance tuner is used for being connected with a load end signal source, the second end of the load end impedance tuner is connected with the first end of the load end bi-directional coupler, the second end of the load end bi-directional coupler is directly connected with a coaxial or waveguide device to be tested or connected with a second probe, and the second probe is used for being connected with the device to be tested;
the third end and the fourth end of the source end double directional coupler and the third end and the fourth end of the load end double directional coupler are respectively connected with ports of four internal receivers of the vector network analyzer;
and the terminal equipment is connected with the vector network analyzer.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the method for measuring a parameter of a device as described above.
According to the invention, by acquiring the real-time measurement data of the device to be measured by the vector network analyzer, the parameters of the device to be measured can be calculated in real time, the influence of mechanical repeatability of the tuner is not resisted, and the measurement accuracy of the parameters of the device to be measured is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a method for measuring device parameters according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an 8-term system error model provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an input reflectance measurement model provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an output-end load reflection coefficient measurement model according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an output measurement model during power calibration according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a terminal device in a system according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a system according to another embodiment of the present invention;
fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention.
Wherein: 1. a vector network analyzer; 2. a source end impedance tuner; 3. a load end impedance tuner; 4. a source end double directional coupler; 5. a load side bi-directional coupler; 6. a device under test; 7. a first source isolator; 8. a first source end attenuator; 9. a source end amplifier; 10. a second source isolator; 11. a second source end attenuator; 12. a third source attenuator; 13. a second load side attenuator; 14. a third load side attenuator; 15. a first load side isolator; 16. a first load side attenuator; 17. a phase shifter; 18. a load side amplifier; 19. a circulator; 20. a power meter; 21. a terminal device; 110. the source end is connected with the circuit; 120. the load end is connected with the circuit.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The terms "comprises" and "comprising," as well as any other variations, in the description and claims of this invention and the drawings described above, are intended to mean "including but not limited to," and are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example 1:
fig. 1 shows a flowchart of an implementation of a method for measuring device parameters according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown, which is detailed as follows:
as shown in fig. 1, a method for measuring a device parameter according to an embodiment of the present invention includes:
s101, obtaining measurement data of a device to be measured and error parameters of a load traction measurement system, wherein the measurement data are voltage waves measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device to be measured;
and S102, calculating the parameters of the device to be measured by using the measurement data and the error parameters of the load traction measurement system.
In this embodiment, the measurement data is a real-time voltage wave measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device under test.
In an embodiment of the present invention, before S101, the method further includes:
s1101, acquiring a calibration parameter of the load traction measurement system and an error parameter of a vector network analyzer, wherein the calibration parameter is acquired by calibrating the load traction measurement system based on a preset measurement model;
and S1102, obtaining the error parameters of the load traction measurement system by using the calibration parameters and the error parameters of the vector network analyzer.
In an embodiment of the invention, the error parameters of the vector network analyzerThe number comprising e00，e11，e01e10，e22，e33，e23e32，e10e32；
The error parameters of the vector network analyzer are obtained by calibrating the vector network analyzer by using a calibration piece to obtain an 8-term error model00，e11，e01e10，e22，e33，e23e32，e10e32。
In the embodiment, as shown in fig. 2, by analyzing the conventional on-chip vector error model, an 8-term error model (which can be solved by 12-term or directly solved by 8-term) is established between the receiver inside the vector network and the tested device, X and Y are error parameters in the error network, the error parameters in the 8-term error model do not change with the change of the source end/load end impedance tuner, and the change is the voltage wave a measured by the receiver inside the vector network in real time1m，b1m，a2m，b2m。
In an embodiment of the invention, the error parameter of the load traction measurement system comprises e00，e11，e01e10，e22,e33，e23e32，e10e32,|e32|2And | e10|2。
In an embodiment of the present invention, S1102 includes:
s2201, based on e11Obtaining | e according to a preset output end measurement model during power calibration and a preset input reflection coefficient measurement model10|2；
S2202, based on e10e32Obtaining | e according to a preset output end measurement model32|2The | e can also be combined according to the 8-term error model10|2To obtain | e32|2。
In an embodiment of the present invention, S2201 includes:
as shown in fig. 4 and fig. 5, the output end measurement model can be equivalent to an output end measurement model during power calibration and two independent single-port models of the output end load reflection coefficient measurement model.
When the probe end is connected with the through Thru, and the output end of the load end impedance matching is connected with the power meter for power calibration, the signal flow diagram of the input reflection coefficient measurement model shown in fig. 3,
Figure BDA0002071594600000051
Figure BDA0002071594600000052
it is possible to obtain,
Figure BDA0002071594600000053
Figure BDA0002071594600000061
wherein the content of the first and second substances,
Figure BDA0002071594600000062
voltage waves measured by a receiver connected with the third end of the source-end double-directional coupler during power calibration; a is1Inputting a voltage wave to the through input; b1Reflecting the voltage wave for the straight-through input;
Figure BDA0002071594600000063
the input reflection coefficient of the through input is measured for the load termination power.
In this embodiment, a1Voltage waves that are directed through input port 1; b1Is a voltage wave passing through the input port 4. Port 1 is the connection between the first probe and the feed-through, and port 4 is the connection between the second end (i.e., the output end) of the source-side dual-directional coupler and the first probe.
As shown by the flow chart of the output measurement model in power calibration shown in figure 5,
bt＝S22cat+S21cb2；
|bt|2(1-|Γpm|2)＝PCAL；
Figure BDA0002071594600000064
when the connection is in the through state,
Figure BDA0002071594600000065
it is possible to obtain,
Figure BDA0002071594600000066
wherein, btInputting a voltage wave for the power meter; s22cThe output reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; a istReflecting the voltage wave for the end face of the power meter; s21cThe transmission reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; b2Outputting a voltage wave for through; gamma-shapedpmIs the reflection coefficient of the probe of the power meter; pCALReading of a power meter in power calibration;
Figure BDA0002071594600000067
the voltage wave is directly output when power is calibrated.
In an embodiment of the present invention, S2202 includes:
in calibration, a signal flow diagram of the output end load reflection coefficient measurement model shown in FIG. 4 can be obtained
Figure BDA0002071594600000071
Figure BDA0002071594600000072
Wherein the content of the first and second substances,
Figure BDA0002071594600000073
the voltage wave measured by a receiver connected with the third end of the load-end double-directional coupler during power calibration;
Figure BDA0002071594600000074
the voltage wave measured by a receiver connected with the fourth end of the load-end double-directional coupler during power calibration;
Figure BDA0002071594600000075
directly outputting a voltage wave during power calibration;
at this point it should be noted that ie32|2The solution can also be solved by:
Figure BDA0002071594600000076
in an embodiment of the invention, the calibration parameters of the load traction measurement system comprise
Figure BDA0002071594600000077
For the voltage wave measured by the receiver connected to the third terminal of the source-side dual directional coupler at the time of power calibration,
Figure BDA0002071594600000078
input reflection factor of the feed-through for load termination of the power timer, btFor the input voltage wave of the power meter, S22cThe output reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; a istReflecting the voltage wave for the end face of the power meter; s21cFor transmission reflection coefficient of end face of output probe and end face of connection of power meterpmIs the reflection coefficient of the probe of the power meter; pCALReading of a power meter in power calibration;
Figure BDA0002071594600000079
the voltage wave is directly output when power is calibrated.
In an embodiment of the present invention, S102 includes:
s201, calculating an input reflection coefficient of a device to be measured according to a preset input reflection coefficient measurement model, the system error parameter and the measurement data;
s202, calculating the load reflection coefficient of the device to be measured according to a preset output end load reflection coefficient measurement model, the system error parameter and the measurement data;
s203, calculating the input power of the device to be tested according to the system error parameters, the measurement data and the input reflection coefficient of the device to be tested;
s204, calculating the output power of the device to be tested according to the system error parameters, the measurement data and the load reflection coefficient of the device to be tested;
s205, calculating power gain according to the input power of the device to be tested and the output power of the device to be tested.
In an embodiment of the present invention, S201 includes:
Figure BDA0002071594600000081
can deduce
Figure BDA0002071594600000082
Wherein the content of the first and second substances,
Figure BDA0002071594600000083
vector network analyzer internal receiver b for placing tested piece1m/a1m；ΓinThe input reflection coefficient of the device to be tested; a is1Inputting a voltage wave to an input end of a device to be tested; b1Reflecting the voltage wave for the input end of the device to be tested; a is1mFor connecting the third terminal of the source-side dual directional coupler during measurementA voltage wave measured by the receiver; b1mThe voltage wave measured by the receiver connected with the fourth end of the source-end double directional coupler is measured.
In an embodiment of the present invention, S202 includes:
Figure BDA0002071594600000084
wherein, gamma isLThe load reflection coefficient of the device to be tested; a is2mA voltage wave measured by a receiver connected with the fourth end of the load end bi-directional coupler during measurement; b2mVoltage waves measured by a receiver connected with the third end of the load end bi-directional coupler during measurement; a is2Inputting a voltage wave for the output end of the device to be tested; b2Outputting a voltage wave to the output end of the device to be tested; e.g. of the type22，e33，e23，e32Is an error parameter at the output end,
Figure BDA0002071594600000085
in this embodiment, a2Is the voltage wave of the output port 2 of the device to be tested.
In an embodiment of the present invention, S203 includes:
when the device under test is accessed, i.e. tested, as can be seen from the signal flow diagram of the input reflection coefficient measurement model shown in fig. 3,
a1me10+b1e11＝a1；
Figure BDA0002071594600000086
Figure BDA0002071594600000087
Figure BDA0002071594600000091
wherein, PinIs the input power of the device under test.
In an embodiment of the present invention, S204 includes:
when the probe is connected with the device to be tested, namely testing, the measurement model of the output end in the test of FIG. 4 is shown;
b2m＝e33a2m+e32b2；
Figure BDA0002071594600000092
Figure BDA0002071594600000093
wherein, PLIs the output power of the device under test.
In an embodiment of the present invention, S205 includes:
Figure BDA0002071594600000094
wherein G isOPIs the power gain.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Example 2:
as shown in fig. 6, one embodiment of the present invention provides a system, which includes:
the device comprises a vector network analyzer 1, a source end impedance tuner 2, a load end impedance tuner 3, a source end double directional coupler 4, a load end double directional coupler 5 and a terminal device 21;
the first end of the source end impedance tuner 2 is used for connecting a source end signal source, the second end of the source end impedance tuner 2 is connected with the first end of the source end double-directional coupler 4, the second end of the source end double-directional coupler 4 is connected with a first probe, and the first probe is used for connecting a device to be tested 6;
a first end of the load end impedance tuner 3 is used for connecting a load end signal source, a second end of the load end impedance tuner 3 is connected with a first end of the load end bi-directional coupler 5, a second end of the load end bi-directional coupler 5 is connected with a second probe, and the second probe is used for connecting a device to be tested 6;
and the third end and the fourth end of the source end double directional coupler 4 and the third end and the fourth end of the load end double directional coupler 5 are respectively connected with the ports of four internal receivers of the vector network analyzer 1.
The terminal device 21 is connected to the vector network analyzer 1.
As shown in fig. 7, the terminal device 21 is configured to execute the method steps in the embodiment corresponding to fig. 1, where the terminal device 21 includes: data acquisition module 2100 and calculation module 2200;
a data obtaining module 2100, configured to obtain measurement data of a device under test and an error parameter of a load traction measurement system, where the measurement data is a voltage wave measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device under test;
a calculating module 2200, configured to calculate a parameter of the device under test by using the measurement data and the error parameter of the load pull measurement system.
In the embodiment of the present invention, the first end of the source end impedance tuner 2 and the first end of the load end impedance tuner 3 may be respectively connected to the vector network analyzer 1, and a source end signal and a load end signal are provided by an internal signal source of the vector network analyzer 1.
As shown in fig. 8, in the embodiment of the present invention, a source-side signal source device and a load-side signal source device are further included, the first end of the source-side impedance tuner 2 is connected to the source-side signal source device, and the first end of the load-side impedance tuner 3 is connected to the load-side signal source device.
In the embodiment of the present invention, the present invention further includes a source end connection circuit 110, a second source end attenuator 11 and a third source end attenuator 12;
the source end impedance tuner 2 is connected to the source end signal source through the source end connection circuit 110, wherein a first end of the source end impedance tuner is connected to a second end of the source end connection circuit 110, and a first end of the source end connection circuit 110 is used for connecting to the source end signal source;
the source connection circuit 110 includes: a first source end isolator 7, a first source end attenuator 8, a source end amplifier 9 and a second source end isolator 10;
a first end of the first source isolator 7 is a first end of the source connection circuit 110, and is used for connecting a source signal source; a second end of the first source end isolator 7 is connected to a first end of the first source end attenuator 8, and a second end of the first source end attenuator 8 is connected to a first end of the source end amplifier 9; a second end of the source end amplifier 9 is connected to a first end of the second source end isolator 10, and a second end of the second source end isolator 10 is a second end of the source end connection circuit 110; a first end of the second source-end attenuator 11 is connected to a third end of the source-end dual directional coupler 4, a second end of the second source-end attenuator 11 is connected to a port of a first receiver inside the vector network analyzer 1, a first end of the third source-end attenuator 12 is connected to a fourth end of the source-end dual directional coupler 4, and a second end of the third source-end attenuator 12 is connected to a port of a second receiver inside the vector network analyzer 1.
As shown in fig. 8, in the embodiment of the present invention, a load side connection circuit 120, a second load side attenuator 13, and a third load side attenuator 14 are further included;
the load end impedance tuner 3 is connected to the load end signal source through the load end connection circuit 120, wherein a first end of the impedance tuner at the load end is connected to a second end of the load end connection circuit 120, and a first end of the load end connection circuit 120 is used for connecting the load end signal source;
wherein the load side connection circuit 120 includes: a first load side isolator 15, a first load side attenuator 16, a phase shifter 17, a load side amplifier 18, and a circulator 19;
the first end of the first load side isolator 15 is the first end of the load side connection circuit 120, and is used for connecting a load side signal source; a second end of the first load side isolator 15 is connected to a first end of a first load side attenuator 16, a second end of the first load side attenuator 16 is connected to a first end of the phase shifter 17, a second end of the phase shifter 17 is connected to a first end of the load side amplifier 18, a second end of the load side amplifier 18 is connected to a first end of the circulator 19, a second end of the circulator 19 is a second end of the load side connection circuit 120, a third end of the circulator 19 is connected to a load, a first end of the second load side attenuator 13 is connected to a third end of the load side bi-directional coupler 5, a second end of the second load side attenuator 13 is connected to a port of a third receiver inside the vector network analyzer 1, a first end of the third load side attenuator 14 is connected to a fourth end of the load side bi-directional coupler 5, the second end of the third load side attenuator 14 is connected to a port of a fourth receiver inside the vector network analyzer 1.
As shown in fig. 8, in the embodiment of the present invention, a power meter 20 for calibrating the load traction measurement system is further included, and the power meter 20 is connected to the first end of the load end impedance tuner 3.
In this embodiment, the power meter 20 measures the power at the output end of the load end impedance tuner 3, the power meter 20 is only used during power calibration, and is not used during non-calibration, and the device 6 to be measured is connected in a straight-through manner;
in the power calibration, the calibration can also be performed by measuring the power at the second end of the source-side dual directional coupler 4.
In an embodiment of the present invention, the data obtaining module 2100 further includes:
the parameter acquisition module is used for acquiring calibration parameters of the load traction measurement system and error parameters of the vector network analyzer, wherein the calibration parameters are acquired by calibrating the load traction measurement system based on a preset measurement model;
and the error parameter calculation module is used for obtaining the error parameter of the load traction measurement system by using the calibration parameter and the error parameter of the vector network analyzer.
In an embodiment of the invention, the error parameters of the vector network analyzer comprise e00，e11，e01e10，e22，e33，e23e32，e10e32；
The error parameters of the vector network analyzer are obtained by calibrating the vector network analyzer by using a calibration piece to obtain an 8-term error model00，e11，e01e10，e22，e33，e23e32，e10e32。
In an embodiment of the invention, the error parameter of the load traction measurement system comprises e00，e11，e01e10，e22,e33，e23e32，e10e32,|e32|2And | e10|2。
In an embodiment of the invention, the error parameter calculation module comprises:
a first calculation unit for calculating a first calculation result based on e11Obtaining | e according to a preset output end measurement model during power calibration and a preset input reflection coefficient measurement model10|2；
A second calculation unit for calculating a second calculation result based on e33Obtaining | e according to a preset output end measurement model32|2；
Wherein, the output end measurement model during power calibration is as follows:
Figure BDA0002071594600000131
the output end measurement model during the test is as follows:
Figure BDA0002071594600000132
wherein the content of the first and second substances,
Figure BDA0002071594600000133
voltage waves measured by a receiver connected with the third end of the source-end double-directional coupler during power calibration;
Figure BDA0002071594600000134
the input reflection coefficient of the straight-through input end of the power timing is connected with the load end; s22cThe output reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; s21cThe transmission reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; gamma-shapedpmIs the reflection coefficient of the probe of the power meter; pCALThe reading of the power meter at the time of power calibration.
In an embodiment of the present invention, the calculation module 2200 includes:
the third calculation unit is used for calculating the input reflection coefficient of the device to be measured according to a preset input reflection coefficient measurement model, the system error parameter and the measurement data;
the fourth calculation unit is used for calculating the load reflection coefficient of the device to be tested according to a preset output end measurement model during testing, the system error parameter and the measurement data;
the fifth calculation unit is used for calculating the input power of the device to be measured according to the system error parameters, the measurement data and the input reflection coefficient of the device to be measured;
the sixth calculating unit is used for calculating the output power of the device to be measured according to the system error parameters, the measurement data and the load reflection coefficient of the device to be measured;
and the seventh calculating unit is used for calculating power gain according to the input power of the device to be tested and the output power of the device to be tested.
In an embodiment of the present invention, the third calculation unit includes:
Figure BDA0002071594600000135
wherein, a1mFor connecting source ends during measurementA voltage wave measured by a receiver at the third end of the directional coupler; b1mThe voltage wave measured by a receiver connected with the fourth end of the source-end double-directional coupler during measurement is measured; e.g. of the type00，e11，e01，e10Is a system error parameter; a is1Inputting a voltage wave to an input end of a device to be tested; b1Reflecting the voltage wave for the input end of the device to be tested; gamma-shapedinIs the input reflection coefficient of the device under test.
In an embodiment of the present invention, the fourth calculation unit includes:
Figure BDA0002071594600000141
wherein, gamma isLThe load reflection coefficient of the device to be tested; a is2mA voltage wave measured by a receiver connected with the fourth end of the load end bi-directional coupler during measurement; b2mVoltage waves measured by a receiver connected with the third end of the load end bi-directional coupler during measurement; a is2Inputting a voltage wave for the output end of the device to be tested; b2Outputting a voltage wave to the output end of the device to be tested; e.g. of the type22，e33，e23，e32As a parameter of the systematic error is used,
Figure BDA0002071594600000142
in an embodiment of the present invention, the fifth calculation unit includes:
Figure BDA0002071594600000143
wherein, PinIs the input power of the device under test.
In an embodiment of the present invention, the sixth calculation unit includes:
Figure BDA0002071594600000144
wherein, PLIs the output power of the device under test.
In an embodiment of the present invention, the seventh calculation unit includes:
Figure BDA0002071594600000145
wherein G isOPIs the power gain.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the foregoing function distribution may be completed by different functional modules according to needs, that is, the internal structure of the terminal device is divided into different functional modules to complete all or part of the above-described functions. Each functional module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated module may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional modules are only used for distinguishing one functional module from another, and are not used for limiting the protection scope of the application. For the specific working process of the module in the terminal device, reference may be made to the corresponding process in the foregoing method embodiment 1, which is not described herein again.
Example 3:
fig. 9 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 9, the terminal device 21 of this embodiment includes: a processor 910, a memory 911, and a computer program 912 stored in the memory 911 and operable on the processor 910. The processor 910 implements the steps in the embodiments described in embodiment 1, such as steps S101 to S102 shown in fig. 1, when executing the computer program 912. Alternatively, the processor 910, when executing the computer program 912, implements the functions of the terminal device in each system embodiment as described in embodiment 2, for example, the functions of the modules 2100 to 2200 shown in fig. 7.
The terminal device 21 refers to a terminal with data processing capability, and includes but is not limited to a computer, a workstation, a server, and even some Smart phones, palmtop computers, tablet computers, Personal Digital Assistants (PDAs), Smart televisions (Smart TVs), and the like with excellent performance. The terminal device is generally installed with an operating system, including but not limited to: windows operating system, LINUX operating system, Android (Android) operating system, Symbian operating system, Windows mobile operating system, and iOS operating system, among others. While specific examples of the terminal device 21 are listed in detail above, those skilled in the art will appreciate that the terminal device is not limited to the listed examples.
The terminal device may include, but is not limited to, a processor 910, a memory 911. Those skilled in the art will appreciate that fig. 9 is only an example of the terminal device 21, and does not constitute a limitation to the terminal device 21, and may include more or less components than those shown, or combine some components, or different components, for example, the terminal device 21 may further include an input-output device, a network access device, a bus, etc.
The Processor 910 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 911 may be an internal storage unit of the terminal device 21, such as a hard disk or a memory of the terminal device 21. The memory 911 may also be an external storage device of the terminal device 21, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 21. Further, the memory 911 may also include both an internal storage unit and an external storage device of the terminal device 21. The memory 911 is used to store the computer program and other programs and data required by the terminal device 21. The memory 911 may also be used to temporarily store data that has been output or is to be output.
Example 4:
an embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the steps in the embodiments described in embodiment 1, for example, step S101 to step S102 shown in fig. 1. Alternatively, the computer program, when executed by a processor, implements the functions of a terminal device in each system embodiment as described in embodiment 2, for example, the functions of modules 2100 to 2200 shown in fig. 7.
The computer program may be stored in a computer readable storage medium, which when executed by a processor, may implement the steps of the various method embodiments described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
In the above embodiments, the description of each embodiment has a respective emphasis, and embodiments 1 to 4 may be combined arbitrarily, and a new embodiment formed by combining is also within the scope of the present application. For parts which are not described or illustrated in a certain embodiment, reference may be made to the description of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed terminal device and method may be implemented in other ways. For example, the above-described system/terminal device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims (10)

1. A method of measuring a device parameter, comprising:
acquiring a calibration parameter of a load traction measurement system and an error parameter of a vector network analyzer, and acquiring the error parameter of the load traction measurement system by using the calibration parameter and the error parameter of the vector network analyzer; wherein the error parameters of the vector network analyzer include e00，e11，e01e10，e22，e33，e23e32，e10e32(ii) a The error parameters of the load traction measurement system comprise e00，e11，e01e10，e22,e33，e23e32，e10e32，|e10|2；
Acquiring measurement data of a device to be measured, wherein the measurement data is voltage waves measured by an internal receiver of a vector network analyzer in the load traction measurement system based on the device to be measured;
calculating the parameters of the device to be measured by using the measurement data and the error parameters of the load traction measurement system;
wherein, using the measurement data and the error parameters of the load pull measurement system to calculate the parameters of the device under test comprises:
based on e11Obtaining | e according to a preset output end measurement model during power calibration and a preset input reflection coefficient measurement model10|2；
The output end measurement model during power calibration is as follows:
Figure FDA0002951012320000011
wherein the content of the first and second substances,
Figure FDA0002951012320000012
voltage waves measured by a receiver connected with the third end of the source-end double-directional coupler during power calibration;
Figure FDA0002951012320000013
the input reflection coefficient of the straight-through input end of the power timing is connected with the load end; s22cThe output reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; s21cThe transmission reflection coefficient of the end face of the output probe and the connecting end face of the power meter is obtained; gamma-shapedpmIs the reflection coefficient of the probe of the power meter; pCALThe reading of the power meter at the time of power calibration.
2. The method of measuring device parameters of claim 1, wherein the calibration parameters are obtained by calibrating the load-pull measurement system based on a predetermined measurement model.
3. The method of claim 2, wherein the error parameters of the vector network analyzer are obtained by calibrating the vector network analyzer with a calibration device to obtain an 8-term error model00，e11，e01e10，e22，e33，e23e32，e10e32。
4. The method of measuring device parameters of claim 3, wherein the load pulls
The error parameters of the measurement system further include | e32|2；
The obtaining of the error parameter of the load traction measurement system by using the calibration parameter and the error parameter of the vector network analyzer comprises:
based on e33 or e10e32, obtaining | e by measuring the model according to a preset output end32|2；
Wherein, the output end measurement model during power calibration is as follows:
Figure FDA0002951012320000021
the output end measurement model is as follows:
Figure FDA0002951012320000022
the | e can also be combined by an 8-term error model10|2And then, the calculation is carried out,
Figure FDA0002951012320000023
wherein the content of the first and second substances,
Figure FDA0002951012320000024
the voltage wave measured by a receiver connected with the third end of the load-end double-directional coupler during power calibration;
Figure FDA0002951012320000025
the voltage wave measured by a receiver connected with the fourth end of the load-end double-directional coupler during power calibration;
Figure FDA0002951012320000026
the voltage wave is directly output when power is calibrated.
5. The method of measuring device parameters according to claim 1, wherein said calculating parameters of the device under test using said measurement data and error parameters of said system comprises:
calculating the input reflection coefficient of the device to be measured according to a preset input reflection coefficient measurement model, the error parameters of the system and the measurement data;
calculating the load reflection coefficient of the device to be measured according to a preset output end measurement model, the error parameters of the system and the measurement data;
calculating the input power of the device to be tested according to the error parameters of the system, the measurement data and the input reflection coefficient of the device to be tested;
calculating the output power of the device to be tested according to the error parameters of the system, the measurement data and the load reflection coefficient of the device to be tested;
and calculating power gain according to the input power of the device to be tested and the output power of the device to be tested.
6. The method of measuring device parameters of claim 5, wherein said calculating an input reflectance of the device under test comprises:
Figure FDA0002951012320000031
wherein, a1mThe voltage wave is measured by a receiver connected with the third end of the source end double-directional coupler during measurement; b1mThe voltage wave measured by a receiver connected with the fourth end of the source-end double-directional coupler during measurement is measured; e.g. of the type00，e11，e01e10Is an error parameter of the system; a is1Inputting a voltage wave to an input end of a device to be tested; b1Reflecting the voltage wave for the input end of the device to be tested; gamma-shapedinThe input reflection coefficient of the device to be tested;
calculating a load reflection coefficient of the device under test, comprising:
Figure FDA0002951012320000032
wherein, gamma isLThe load reflection coefficient of the device to be tested; a is2mA voltage wave measured by a receiver connected with the fourth end of the load end bi-directional coupler during measurement; b2mVoltage waves measured by a receiver connected with the third end of the load end bi-directional coupler during measurement; a is2Inputting a voltage wave for the output end of the device to be tested; b2Outputting a voltage wave to the output end of the device to be tested; e.g. of the type22，e33，e23e32Is the error parameter of the system and is,
Figure FDA0002951012320000033
the calculating the input power of the device to be tested comprises the following steps:
Figure FDA0002951012320000034
wherein, PinThe input power of the device to be tested;
calculating the output power of the device to be tested, comprising:
Figure FDA0002951012320000035
wherein, PLIs the output power of the device under test.
7. The method of measuring a device parameter of claim 6, wherein said calculating a power gain comprises:
Figure FDA0002951012320000041
wherein G isOPIs the power gain.
8. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for measuring a device parameter according to any one of claims 1 to 7 when executing the computer program.
9. A system, comprising: a vector network analyzer, a source-end impedance tuner, a load-end impedance tuner, a source-end dual directional coupler, a load-end dual directional coupler, and the terminal device of claim 8;
the first end of the source end impedance tuner is used for connecting a source end signal source, the second end of the source end impedance tuner is connected with the first end of the source end double directional coupler, the second end of the source end double directional coupler is directly connected with a coaxial or waveguide device to be tested or connected with a first probe, and the first probe is used for connecting the device to be tested;
the first end of the load end impedance tuner is used for being connected with a load end signal source, the second end of the load end impedance tuner is connected with the first end of the load end bi-directional coupler, the second end of the load end bi-directional coupler is directly connected with a coaxial or waveguide device to be tested or connected with a second probe, and the second probe is used for being connected with the device to be tested;
the third end and the fourth end of the source end double directional coupler and the third end and the fourth end of the load end double directional coupler are respectively connected with ports of four internal receivers of the vector network analyzer;
and the terminal equipment is connected with the vector network analyzer.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when being executed by a processor, carries out the steps of the method for measuring a parameter of a device according to any one of claims 1 to 7.
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