CN106556755B - A kind of microwave converter input isolation test and system - Google Patents
A kind of microwave converter input isolation test and system Download PDFInfo
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- CN106556755B CN106556755B CN201610907189.1A CN201610907189A CN106556755B CN 106556755 B CN106556755 B CN 106556755B CN 201610907189 A CN201610907189 A CN 201610907189A CN 106556755 B CN106556755 B CN 106556755B
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The present invention provides a kind of microwave converters to input isolation test, is related to isolation degree test technical field.Wherein method includes: the radiofrequency signal generated within the scope of simulation Devices to test working frequency range by signal generator, and by radio signal transmission to electric bridge；Radiofrequency signal exports the first polarization port to Network Analyzer and Devices to test after electric bridge is handled；Devices to test passes through the second polarization port for the radio signal transmission leaked into the second polarization port from the first polarization port to Network Analyzer；The input isolation between the first polarization port and the second polarization port is calculated according to the radiofrequency signal of the second of Devices to test the polarization port output and the radiofrequency signal of electric bridge output for Network Analyzer.The present invention can accurately test out the input isolation of microwave converter product, provide data reference for research and development of products debugging, of the same trade horizontal to be higher than in product characteristic and comprehensive test, improve the competitiveness of product.
Description
Technical field
The invention belongs to isolation degree test technical field more particularly to a kind of microwave converter input isolation test and
System.
Background technique
With the development of science and technology, microwave converter industry is also more and more, competes also more and more fierce.Currently, micro-
Wave frequency converter generally comprises multi-frequency multichannel, can mark off more frequency ranges in limited spectral range in this way to difference
Operator.However, part microwave converter product may be isolated at certain Frequency points because of the input between each channel
Effect is bad, leads to no signal and influences to use, serious to will affect product in the industry competing to affect user experience
Strive advantage.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of microwave converter input isolation test, it is intended to solve above-mentioned
Part microwave converter product may be bad because of the input isolation effect between each channel at certain Frequency points, leads to nothing
Signal and influence to use, to affect user experience, the problem of the serious competitive advantage that will affect product in the industry.
The embodiments of the present invention are implemented as follows, a kind of microwave converter input isolation test, comprising:
The radiofrequency signal within the scope of simulation Devices to test working frequency range is generated by signal generator, and the radio frequency is believed
Number it is transmitted to electric bridge；
The radiofrequency signal exports first to the Network Analyzer and the Devices to test after electric bridge processing
Polarization port；
The Devices to test will leak into the second polarization port from first polarization port by the second polarization port
In radio signal transmission to the Network Analyzer；
Radiofrequency signal and the electric bridge of the Network Analyzer according to the second of the Devices to test the polarization port output
The input isolation between the first polarization port and the second polarization port is calculated in the radiofrequency signal of output.
Based on the above technical solution, the Network Analyzer is defeated according to the second of the Devices to test the polarization port
Radiofrequency signal out and the radiofrequency signal of electric bridge output be calculated the first polarization port and the second polarization port it
Between input isolation specifically include:
Obtain the first power and the electric bridge output of the radiofrequency signal of the second polarization port output of the Devices to test
Radiofrequency signal the second power, calculate the ratio of first power and second power, the ratio is described the
Input isolation between one polarization port and second polarization port.
Based on the above technical solution, the Devices to test will be from first polarization end by the second polarization port
It is leaked into before the radio signal transmission to the Network Analyzer in the second polarization port in mouthful further include:
High frequency detection, judgement are carried out to the radiofrequency signal for leaking into second polarization port from first polarization port
Within the preset frequency range whether the frequency of the radiofrequency signal；
If within the preset frequency range, the radio signal transmission is handled into the Network Analyzer.
Based on the above technical solution, the predeterminated frequency range is 10MHZ~18GHZ.
Based on the above technical solution, the Network Analyzer is exported according to the electric bridge radiofrequency signal and described
Devices to test second polarization port output radiofrequency signal be calculated it is described first polarization port and second polarization port it
Between input isolation after further include:
Judge whether the input isolation is meeting default isolation standard；
If not meeting default isolation standard, tester is prompted.
The another object of the embodiment of the present invention is to provide a kind of microwave converter input isolation test system, including signal
Generator, electric bridge, Devices to test and Network Analyzer, the Devices to test include the first polarization port and the second polarization end
Mouthful, the signal generator is connect with the input terminal of the electric bridge, and the output end of the electric bridge is connected to the Network Analyzer
First input end and the determinand first polarization port, the determinand second polarization port be connected to the network
Second input port of analyzer, in which:
The signal generator, for generating the radiofrequency signal within the scope of Devices to test working frequency range, and by the radio frequency
Signal is transmitted to electric bridge；
The electric bridge, for exporting the radiofrequency signal to the network analysis after handling the radiofrequency signal
First polarization port of instrument and the Devices to test；
The Devices to test, for by the second polarization port the second polarization will to be leaked into from first polarization port
Radio signal transmission in port is to the Network Analyzer；
The Network Analyzer, for the radiofrequency signal and described according to the second of the Devices to test the polarization port output
The input isolation between the first polarization port and the second polarization port is calculated in the radiofrequency signal of electric bridge output.
Based on the above technical solution, the Network Analyzer is specifically used for:
Obtain the first power and the electric bridge output of the radiofrequency signal of the second polarization port output of the Devices to test
Radiofrequency signal the second power, calculate the ratio of first power and second power, the ratio is described the
Input isolation between one polarization port and second polarization port.
Based on the above technical solution, further include be connected to it is described second polarization port and the Network Analyzer it
Between rectifier, in which:
The rectifier, for believing the radio frequency for leaking into second polarization port from first polarization port
Number carry out high frequency detection, whether within the preset frequency range judge the frequency of the radiofrequency signal；If within the preset frequency range,
Then the radio signal transmission is handled into the Network Analyzer.
Based on the above technical solution, the predeterminated frequency range is 10MHZ~18GHZ.
Based on the above technical solution, the Network Analyzer is also used to:
Judge whether the input isolation is meeting default isolation standard；
If not meeting default isolation standard, tester is prompted.
Implement a kind of microwave converter input isolation test provided in an embodiment of the present invention and system has with following
Beneficial effect:
The embodiment of the present invention generates the radiofrequency signal within the scope of simulation Devices to test working frequency range by signal generator, and
By the radio signal transmission to electric bridge；The radiofrequency signal exports after electric bridge processing to the Network Analyzer and institute
State the first polarization port of Devices to test；The Devices to test will be let out by the second polarization port from first polarization port
Radio signal transmission in the second polarization port is drained to the Network Analyzer；The Network Analyzer to be measured is set according to described
First polarization end is calculated in the standby radiofrequency signal of the second polarization port output and the radiofrequency signal of electric bridge output
Input isolation between mouth and the second polarization port, so as to accurately test out the input isolation of microwave converter product
Degree provides data reference for research and development of products debugging, of the same trade horizontal to be higher than in product characteristic and comprehensive test, improves and produces
The competitiveness of product.
Detailed description of the invention
Fig. 1 is a kind of schematic flow diagram of microwave converter input isolation test provided in an embodiment of the present invention；
Fig. 2 be another embodiment of the present invention provides a kind of microwave converter input isolation test exemplary flow
Figure；
Fig. 3 is a kind of property the shown block diagram of microwave converter input isolation test system provided in an embodiment of the present invention；
Fig. 4 be another embodiment of the present invention provides a kind of microwave converter input isolation test system schematic frame
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Fig. 1 is a kind of schematic flow diagram of microwave converter input isolation test provided in an embodiment of the present invention.Ginseng
As shown in Figure 1, this method may comprise steps of:
In S101, the radiofrequency signal within the scope of simulation Devices to test working frequency range is generated by signal generator, and will
The radio signal transmission is to electric bridge.
In the present embodiment, the Devices to test includes horizontal and vertical two polarization port, in the present embodiment with first,
Second distinguishes above-mentioned two polarization port.Further, in the present embodiment, the signal generator can produce 0~20GHZ
Radiofrequency signal in band limits.
In S102, radiofrequency signal output after electric bridge processing to the Network Analyzer and described to be measured is set
The first standby polarization port.
In the present embodiment, since the radio frequency signal frequency range of receiving of normal microwave converter product Devices to test is
10.7~12.75GHZ, it is therefore desirable to frequency conversion is carried out to the radiofrequency signal that the signal generator exports by the electric bridge,
The radiofrequency signal is converted into the signal in the receivable frequency unit of the Devices to test, further, the electric bridge turns
Changing frequency is 10M~18GHZ；The electric bridge can believe the radio frequency after conversion after carrying out frequency conversion to the radiofrequency signal
Number it is divided into two-way, is transmitted to the first polarization port of the Devices to test, another way as the input signal of Devices to test all the way
The Network Analyzer is transmitted to as test reference signal.
In S103, the Devices to test will leak into second from first polarization port by the second polarization port
The radio signal transmission to polarize in port is to the Network Analyzer.
In the present embodiment, due to various factors, the radiofrequency signal for being input to the polarization of Devices to test first port may
There is part to be leaked to the second polarization port of the Devices to test, therefore, by the second polarization port connection of the Devices to test
To the Network Analyzer, and by second polarization port by the radio signal transmission of leakage to the Network Analyzer.
In S104, the Network Analyzer according to the second of the Devices to test polarization port export radiofrequency signal and
The input isolation between the first polarization port and the second polarization port is calculated in the radiofrequency signal of the electric bridge output.
In the present embodiment, according to the test reference signal received and described second is leaked by the Network Analyzer
The isolation between two polarization ports is calculated in the radiofrequency signal of polarization port, specific:
The Network Analyzer obtains the first power of the radiofrequency signal of the second polarization port output of the Devices to test
With the second power of the radiofrequency signal of electric bridge output, the ratio of first power and second power is calculated, it is described
Ratio is the input isolation between the first polarization port and second polarization port.Tester can in this way
Judge whether the input isolation effect of Devices to test is up to standard according to the isolation between Devices to test two ports of polarizing, is product
Research and development debugging provides data reference.
To sum up, it can be seen that a kind of microwave converter input isolation test provided in this embodiment passes through signal production
Raw device generates the radiofrequency signal within the scope of simulation Devices to test working frequency range, and by the radio signal transmission to electric bridge；It is described
Radiofrequency signal exports the first polarization port to the Network Analyzer and the Devices to test after electric bridge processing；It is described
Devices to test will leak into the radiofrequency signal in the second polarization port from first polarization port by the second polarization port
It is transmitted to the Network Analyzer；The Network Analyzer is believed according to the radio frequency of the second of the Devices to test the polarization port output
Number and the electric bridge output radiofrequency signal be calculated it is described first polarization port and second polarization port between input every
From degree, so as to accurately test out microwave converter product input isolation, data reference is provided for research and development of products debugging,
It is of the same trade horizontal to be higher than in product characteristic and comprehensive test, improve the competitiveness of product.
Fig. 2 be another embodiment of the present invention provides a kind of microwave converter input isolation test exemplary flow
Figure.It is shown in Figure 2, relative to a upper embodiment, a kind of microwave converter input isolation test provided in this embodiment,
Penetrating in the second polarization port will be leaked into from first polarization port by the second polarization port in the Devices to test
Frequency signal is transmitted to before the Network Analyzer further include:
In S203, high frequency is carried out to the radiofrequency signal for leaking into second polarization port from first polarization port
Whether within the preset frequency range detection judges the frequency of the radiofrequency signal；If within the preset frequency range, being penetrated described
Frequency signal is transmitted in the Network Analyzer and is handled.
In the present embodiment, it is carried out at detection using radiofrequency signal of the rectifier to input Network Analyzer
Reason, only the frequency of the radiofrequency signal within a preset range when just transmit it in Network Analyzer and handled, when
When the frequency of the radiofrequency signal exceeds the preset range, then gives up the radiofrequency signal, can protect network analysis in this way
Instrument avoids high-frequency radiofrequency signal from damaging network analyzer.Further, in the present embodiment, the default frequency
Rate range is 10MHZ~18GHZ.
Further, it relative to a upper embodiment, in the present embodiment, is exported in the Network Analyzer according to the electric bridge
Radiofrequency signal and the Devices to test second polarization port output radiofrequency signal be calculated it is described first polarization port
And second polarization port between input isolation after further include:
In S206, judge whether the input isolation is meeting default isolation standard；
In S207, if not meeting default isolation standard, tester is prompted.
In the present embodiment, after due to the input isolation between acquisition Devices to test two polarization port, into
It is compared by one step by Network Analyzer with default isolation standard, judges whether it meets default isolation standard,
And tester is reminded when it does not meet default isolation standard, it sets in this way it is not necessary that tester's artificial judgment is to be measured
Whether standby input isolation effect meets default isolation standard, has further facilitated the operating procedure for simplifying tester, has mentioned
High testing efficiency.
It should be noted that step S201~step S201 and step S204~step S205 reality in the present embodiment
Existing mode due to identical with step S101~step S104 in embodiment illustrated in fig. 1, details are not described herein.
Above as can be seen that a kind of microwave converter input isolation test provided in this embodiment equally can be accurate
Test out microwave converter product input isolation, for research and development of products debugging data reference is provided, with product characteristic and entirely
It is higher than level of the same trade when Azimuth testing, improves the competitiveness of product；Also, relative to a upper embodiment, the present embodiment is also logical
High frequency detection protection Network Analyzer is crossed, avoids Network Analyzer due to receiving high-frequency radiofrequency signal and asking for damaging
Topic；Further, it is also possible to can be mentioned automatically to tester when the input isolation of Devices to test does not meet preset standard
Show, further simplifies the operating procedure of tester, improve testing efficiency.
Fig. 3 is a kind of microwave converter input isolation test system provided in an embodiment of the present invention, for ease of description only
Only the parts related to this embodiment are shown.
Shown in Figure 3, a kind of microwave converter input isolation test system provided in this embodiment, including signal generate
Device 1, electric bridge 2, Devices to test 3 and Network Analyzer 4, the Devices to test 3 include the first polarization port and the second polarization end
Mouthful, the signal generator 1 is connect with the input terminal of the electric bridge 2, and the output end of the electric bridge 2 is connected to the network analysis
Second polarization port 32 of the first polarization port 31 of the first input end of instrument 4 and the determinand, the determinand is connected to
Second input port of the Network Analyzer 4, in which:
The signal generator 1 is penetrated for generating the radiofrequency signal within the scope of 3 working frequency range of Devices to test, and by described
Frequency signal is transmitted to electric bridge 2；
The electric bridge 2, for exporting the radiofrequency signal to the network point after handling the radiofrequency signal
First polarization port 31 of analyzer 4 and the Devices to test 3；
The Devices to test 3, for by the second polarization port 32 the will to be leaked into from first polarization port 31
Radio signal transmission in two polarization ports 32 is to the Network Analyzer 4；
The Network Analyzer 4, for according to the second of the Devices to test 3 polarization port 32 export radiofrequency signal and
The radiofrequency signal that the electric bridge 2 exports be calculated the input between the first polarization port 31 and the second polarization port 32 every
From degree.
Optionally, the Network Analyzer 4 is specifically used for:
Obtain the first power and the electric bridge 2 of the radiofrequency signal of the second polarization port 32 output of the Devices to test 3
Second power of the radiofrequency signal of output calculates the ratio of first power and second power, and the ratio is institute
State the input isolation between the first polarization port 31 and second polarization port 32.
Optionally, shown in Figure 4, in another embodiment, the microwave converter input isolation test system is also wrapped
Include the rectifier being connected between the second polarization port 32 and the Network Analyzer 4, in which:
The rectifier, for leaking into penetrating for the second polarization port 32 to from first polarization port 31
Frequency signal carries out high frequency detection, whether within the preset frequency range to judge the frequency of the radiofrequency signal；If in predeterminated frequency model
In enclosing, then the radio signal transmission is handled into the Network Analyzer 4.
Optionally, the predeterminated frequency range is 10MHZ~18GHZ.
Optionally, the Network Analyzer 4 is also used to:
Judge whether the input isolation is meeting default isolation standard；
If not meeting default isolation standard, tester is prompted.
It should be noted that each unit in terminal provided in this embodiment is since embodiment of the present invention method is based on same
One design, bring technical effect is identical as embodiment of the present invention method, and particular content can be found in embodiment of the present invention method
In narration, details are not described herein again.
Thus, it will be seen that microwave converter input isolation test system provided in an embodiment of the present invention equally can be quasi-
It is true to test out microwave converter product input isolation, debugged for research and development of products and data reference be provided, in product characteristic and
It is higher than level of the same trade when comprehensive test, improves the competitiveness of product.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of microwave converter inputs isolation test characterized by comprising
The radiofrequency signal within the scope of simulation Devices to test working frequency range is generated by signal generator, and the radiofrequency signal is passed
Transport to electric bridge；
The radiofrequency signal exports the first polarization port to Network Analyzer and the Devices to test after electric bridge processing；
The radiofrequency signal is converted to the signal in the receivable frequency unit of the Devices to test by the electric bridge；
The Devices to test will be leaked into the second polarization port by the second polarization port from first polarization port
Radio signal transmission is to the Network Analyzer；
The Network Analyzer is exported according to the radiofrequency signal and the electric bridge of the second of the Devices to test the polarization port output
Radiofrequency signal be calculated it is described first polarization port and second polarization port between input isolation；
The Devices to test will be leaked into the second polarization port by the second polarization port from first polarization port
Before radio signal transmission to the Network Analyzer further include:
High frequency detection is carried out to the radiofrequency signal for leaking into second polarization port from first polarization port, described in judgement
Within the preset frequency range whether the frequency of radiofrequency signal；
If within the preset frequency range, the radio signal transmission is handled into the Network Analyzer.
2. microwave converter as described in claim 1 inputs isolation test, which is characterized in that the Network Analyzer root
Institute is calculated according to the radiofrequency signal of the second polarization port output and the radiofrequency signal of electric bridge output of the Devices to test
The input isolation stated between the first polarization port and the second polarization port specifically includes:
Obtain the first power of radiofrequency signal and the penetrating for electric bridge output of the second polarization port output of the Devices to test
Second power of frequency signal calculates the ratio of first power and second power, and the ratio is first pole
Change the input isolation between port and second polarization port.
3. microwave converter as described in claim 1 inputs isolation test, which is characterized in that the predeterminated frequency range
For 10MHZ~18GHZ.
4. microwave converter as described in claim 1 inputs isolation test, which is characterized in that the Network Analyzer root
Institute is calculated according to the radiofrequency signal of the second polarization port output of the radiofrequency signal and Devices to test of electric bridge output
State the first polarization port and second polarization port between input isolation after further include:
Judge whether the input isolation meets default isolation standard；
If not meeting default isolation standard, tester is prompted.
5. a kind of microwave converter inputs isolation test system, which is characterized in that including signal generator, electric bridge, Devices to test,
Rectifier and Network Analyzer, the Devices to test include the first polarization port and the second polarization port, the signal
Generator is connect with the input terminal of the electric bridge, and the output end of the electric bridge is connected to the first input end of the Network Analyzer
With the first polarization port of determinand, the second polarization port of the determinand is connected to the second input of the Network Analyzer
Port, in which:
The signal generator, for generating the radiofrequency signal within the scope of Devices to test working frequency range, and by the radiofrequency signal
It is transmitted to electric bridge；
The electric bridge, for the radiofrequency signal to be exported to the Network Analyzer after handling the radiofrequency signal and
First polarization port of the Devices to test；The radiofrequency signal, which is converted to the Devices to test, can receive in frequency unit
Signal；
The Devices to test, for by the second polarization port the second polarization port will to be leaked into from first polarization port
In radio signal transmission to the Network Analyzer；
The Network Analyzer, radiofrequency signal and the electric bridge for being exported according to the second of the Devices to test the polarization port
The input isolation between the first polarization port and the second polarization port is calculated in the radiofrequency signal of output；
The rectifier is connected between the second polarization port and the Network Analyzer, for from described the
The radiofrequency signal that one polarization port leaks into second polarization port carries out high frequency detection, judges the frequency of the radiofrequency signal
Whether within the preset frequency range；If within the preset frequency range, by the radio signal transmission to the Network Analyzer
In handled.
6. microwave converter as claimed in claim 5 inputs isolation test system, which is characterized in that the Network Analyzer tool
Body is used for:
Obtain the first power of radiofrequency signal and the penetrating for electric bridge output of the second polarization port output of the Devices to test
Second power of frequency signal calculates the ratio of first power and second power, and the ratio is first pole
Change the input isolation between port and second polarization port.
7. microwave converter as claimed in claim 5 inputs isolation test system, which is characterized in that the predeterminated frequency range
For 10MHZ~18GHZ.
8. microwave converter as claimed in claim 5 inputs isolation test system, which is characterized in that the Network Analyzer is also
For:
Judge whether the input isolation meets default isolation standard；
If not meeting default isolation standard, tester is prompted.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907189.1A CN106556755B (en) | 2016-10-17 | 2016-10-17 | A kind of microwave converter input isolation test and system |
| PCT/CN2017/087887 WO2018072458A1 (en) | 2016-10-17 | 2017-06-12 | Microwave converter input isolation testing method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610907189.1A CN106556755B (en) | 2016-10-17 | 2016-10-17 | A kind of microwave converter input isolation test and system |
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| CN106556755A CN106556755A (en) | 2017-04-05 |
| CN106556755B true CN106556755B (en) | 2019-05-03 |
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| CN106556755B (en) * | 2016-10-17 | 2019-05-03 | 华讯方舟科技（湖北）有限公司 | A kind of microwave converter input isolation test and system |
| CN112798862A (en) * | 2020-12-30 | 2021-05-14 | 清远市天之衡传感科技有限公司 | Network analyzer measuring device and system |
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| CN101944924A (en) * | 2010-09-30 | 2011-01-12 | 东南大学 | Broadband MIMO radio frequency transceiving system for next-generation wireless communication network |
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| CN105162535A (en) * | 2015-08-11 | 2015-12-16 | 上海原动力通信科技有限公司 | Isolation test device and method |
| CN105991092A (en) * | 2015-01-29 | 2016-10-05 | 西安电子科技大学 | Mixer simulation method and mixer simulation device |
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| JP2002043957A (en) * | 2000-07-19 | 2002-02-08 | Hitachi Kokusai Electric Inc | High frequency signal transmitting apparatus |
| EP1296148A1 (en) * | 2001-09-25 | 2003-03-26 | Agilent Technologies, Inc. (a Delaware corporation) | An apparatus for collecting signal measurement data at signal ports of an RF and microwave device-under-test |
| EP2602925A1 (en) * | 2011-12-07 | 2013-06-12 | KD Elektroniksysteme GmbH | Frequency converter with isolation in direct current circuit for regulating an asynchronous motor |
| CN102680826B (en) * | 2012-05-18 | 2015-08-05 | 中国电子科技集团公司第四十一研究所 | A kind of method utilizing vector network analyzer to realize the test of embedded local oscillator frequency converter |
| CN102955085A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Radio frequency leakage test method |
| CN106556755B (en) * | 2016-10-17 | 2019-05-03 | 华讯方舟科技（湖北）有限公司 | A kind of microwave converter input isolation test and system |
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2016
- 2016-10-17 CN CN201610907189.1A patent/CN106556755B/en active Active
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2017
- 2017-06-12 WO PCT/CN2017/087887 patent/WO2018072458A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944924A (en) * | 2010-09-30 | 2011-01-12 | 东南大学 | Broadband MIMO radio frequency transceiving system for next-generation wireless communication network |
| CN202444494U (en) * | 2012-02-13 | 2012-09-19 | 华为技术有限公司 | Antenna testing system |
| CN105991092A (en) * | 2015-01-29 | 2016-10-05 | 西安电子科技大学 | Mixer simulation method and mixer simulation device |
| CN104865464A (en) * | 2015-04-28 | 2015-08-26 | 深圳市华讯方舟科技有限公司 | Quality testing method used on microwave frequency converter |
| CN105162535A (en) * | 2015-08-11 | 2015-12-16 | 上海原动力通信科技有限公司 | Isolation test device and method |
Also Published As
| Publication number | Publication date |
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| WO2018072458A1 (en) | 2018-04-26 |
| CN106556755A (en) | 2017-04-05 |
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