CN104880621A - Self calibration passive intermodulation tester - Google Patents
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- 230000008878 coupling Effects 0.000 claims description 26
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Abstract
The present invention provides a self calibration passive intermodulation tester. The self calibration passive intermodulation tester comprises a signal amplification unit, a power detection unit, a power synthesis unit, a low intermodulation passive unit and a receiving and processing unit which are connected orderly. The signal amplification unit and the power synthesis unit comprise a 3dB bridge and a first load, and the low intermodulation passive unit comprises a first low intermodulation diplexer, a second low intermodulation diplexer and a second load. The first input end and the second input end of the 3dB bridge are connected with the power detection unit, the first output end of the 3dB bridge is connected with the input end of the first load, and the second output end of the 3dB bridge is connected with the emission end of the first low intermodulation diplexer. The self calibration passive intermodulation tester of the present invention can satisfy the test demands of each frequency band and each order in a mobile communication system, at the same time, guarantees the reliability of a test result, thereby improving the test efficiency of the whole system, and reducing the failure data effectively.
Description
Technical field
The present invention relates to the technical field of communication passive device intermodulation product test, particularly a kind of self calibration passive cross modulation test instrument.
Background technology
Self calibration passive cross modulation test instrument is that a kind of inter-modulated signal of precision measures specialized equipment, for detecting " Intermodulation Interference " noise of widely used passive device in mobile communications network.Passive intermodulation comprehensive tester has become the indispensable detecting instrument of passive device production firm production test.But, existing passive cross modulation test instrument is suitable only for narrowband test, do not meet the intermodulation testing demand of high-order time intermodulation product, therefore passive device index cannot comprehensively be measured, and intermodulation instrument does not possess self-calibration function, once receiver goes wrong, measurement result is fail data, lacks from arbitration functions.In addition, there is inaccurate risk in existing passive cross modulation test instrument intermodulation measurement data result, is unfavorable for that quality personnel judge the True Data of measured piece.
Summary of the invention
The present invention proposes a kind of self calibration passive cross modulation test instrument, and it can meet the passive cross modulation test of each band frequency scope of mobile communication, can test the intermodulation value of higher order, can do real judgement again to the intermodulation value measured.
For achieving the above object, the invention provides a kind of self calibration passive cross modulation test instrument, it comprises: the signal amplification unit connected successively, power detecting unit, power combing unit, low intermodulation parasitic element and reception processing unit, described signal amplification unit, described power combing unit comprises 3dB electric bridge and the first load, described low intermodulation parasitic element comprises the first low inter-modulation duplexer, second low inter-modulation duplexer and the second load, first input end and second input end of described 3dB electric bridge are connected to power detecting unit, first output terminal of described 3dB electric bridge is connected to the input end of the first load, second output terminal of described 3dB electric bridge is connected to the transmitting terminal of the first low inter-modulation duplexer, the transmitting terminal of described second low inter-modulation duplexer is connected to the input end of the second load, the common port of described first low inter-modulation duplexer and the second low inter-modulation duplexer is connected to measured piece panel, the receiving end of described first low inter-modulation duplexer and the receiving end of the second low inter-modulation duplexer are all connected to reception processing unit.
Further, in above-mentioned self calibration passive cross modulation test instrument, described reception processing unit comprises digital receiver, first radio-frequency (RF) switch, second radio-frequency (RF) switch and the 3rd signal source, the normally closed port of described first radio-frequency (RF) switch is connected to the receiving end of the first low inter-modulation duplexer, the often ported receiving end being connected to the second low inter-modulation duplexer of described first radio-frequency (RF) switch, the public port of described first radio-frequency (RF) switch is connected to the normally closed port of the second radio-frequency (RF) switch, the public port of described second radio-frequency (RF) switch is connected to the input end of digital receiver, the often ported of described second radio-frequency (RF) switch is connected to the 3rd signal source.
Further, in above-mentioned self calibration passive cross modulation test instrument, described 3rd signal source is the high dynamic range signal source for self-calibration function.
Further, in above-mentioned self calibration passive cross modulation test instrument, described signal amplification unit comprises the first signal source, secondary signal source, the first linear amplifier and the second linear amplifier, described first signal source is connected to the input end of the first linear amplifier, described secondary signal source is connected to the input end of the second linear amplifier, and the output terminal of described first linear amplifier and the second linear amplifier is all connected to power combing unit.
Further, in above-mentioned self calibration passive cross modulation test instrument, described power detecting unit comprises the first coupling mechanism, the second coupling mechanism, the first isolator and the second isolator, the input end of described first coupling mechanism is connected to the output terminal of the first linear amplifier, the output terminal of described first coupling mechanism is connected to the input end of the first isolator, and the output terminal of described first isolator is connected to the first input end of 3dB electric bridge; The input end of described second coupling mechanism is connected to the output terminal of the second linear amplifier, and the output terminal of described second coupling mechanism is connected to the input end of the second isolator, and the output terminal of described second isolator is connected to the second input end of 3dB electric bridge.
Further, in above-mentioned self calibration passive cross modulation test instrument, described power detecting unit also comprises: an AD sampling module and the 2nd AD sampling module, the input end of a described AD sampling module is connected to the coupled end of described first coupling mechanism, and the input end of described 2nd AD sampling module is connected to the coupled end of described second coupling mechanism.
Self calibration passive cross modulation test instrument of the present invention adopts the self calibration passive cross modulation test instrument of said structure technology, the testing requirement under each frequency range in mobile communcations system, each order can be met, ensure the reliability of test result simultaneously, substantially increase the testing efficiency of whole system, effectively reduce the generation of fail data.
Accompanying drawing explanation
Fig. 1 is the structural representation of self calibration passive cross modulation test instrument of the present invention preferred embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The present invention is a kind of testing apparatus of testing the intermodulation product of passive device, it can realize up to the full frequency band sweep check of 19 orders in received passband, the accuracy of automatic calibration self digital receiver can be realized simultaneously, guarantee equipment accuracy at work, check calibration frequently without the need to artificial outside.
Refer to Fig. 1, described self calibration passive cross modulation test instrument comprises the signal amplification unit 10 connected successively, power detecting unit 20, power combing unit 30, low intermodulation parasitic element 40 and reception processing unit 50, described power combing unit 30 comprises 3dB electric bridge 301 and the first load 302, described low intermodulation parasitic element 40 comprises the first low inter-modulation duplexer 401, second low inter-modulation duplexer 402 and the second load 403, first input end and second input end of described 3dB electric bridge 301 are connected to power detecting unit 20, first output terminal of described 3dB electric bridge 301 is connected to the input end of the first load 302, second output terminal of described 3dB electric bridge 301 is connected to the transmitting terminal of the first low inter-modulation duplexer 401, the transmitting terminal of described second low inter-modulation duplexer 402 is connected to the input end of the second load 403, the common port of described first low inter-modulation duplexer 401 and the second low inter-modulation duplexer 402 is connected to measured piece panel 100, the receiving end of described first low inter-modulation duplexer 401 and the receiving end of the second low inter-modulation duplexer 402 are all connected to and receive processing unit 50.
Wherein, described signal amplification unit 10 comprises the first signal source 101, secondary signal source 102, first linear amplifier 103 and the second linear amplifier 104, described first signal source 101 is connected to the input end of the first linear amplifier 103, described secondary signal source 102 is connected to the input end of the second linear amplifier 104, and the output terminal of described first linear amplifier 103 and the second linear amplifier 104 is all connected to power combing unit 30.
Described power detecting unit 20 comprises the first coupling mechanism 201, second coupling mechanism 202, first isolator 203 and the second isolator 204, the input end of described first coupling mechanism 201 is connected to the output terminal of the first linear amplifier 103, the output terminal of described first coupling mechanism 201 is connected to the input end of the first isolator 203, and the output terminal of described first isolator 203 is connected to the first input end of 3dB electric bridge 301; The input end of described second coupling mechanism 202 is connected to the output terminal of the second linear amplifier 104, the output terminal of described second coupling mechanism 202 is connected to the input end of the second isolator 204, and the output terminal of described second isolator 204 is connected to the second input end of 3dB electric bridge 301.
Described power detecting unit 20 also comprises: an AD sampling module 205 and the 2nd AD sampling module 206, the input end of a described AD sampling module 205 is connected to the coupled end of described first coupling mechanism 201, and the input end of described 2nd AD sampling module 206 is connected to the coupled end of described second coupling mechanism 202.A described AD sampling module 205 and the 2nd AD sampling module 206 are for changing digital signal transfers into control module (this control module is located at and is received in processing unit 50) by gathering the simulating signal dress of returning, described control module by the digital signal that obtains through row comparison calculation, by changing the output size of signal source, realize the adjustment of power level, ensure the power of test port with the power stage in control signal source.
Described reception processing unit 50 comprises digital receiver 501, first radio-frequency (RF) switch 502, second radio-frequency (RF) switch 503 and the 3rd signal source 504, the normally closed port (NC end) of described first radio-frequency (RF) switch 502 is connected to the receiving end of the first low inter-modulation duplexer 401, often ported (the NO end) of described first radio-frequency (RF) switch 502 is connected to the receiving end of the second low inter-modulation duplexer 402, the public port (C end) of described first radio-frequency (RF) switch 502 is connected to the normally closed port (NC end) of the second radio-frequency (RF) switch 503, the public port (C end) of described second radio-frequency (RF) switch 503 is connected to the input end of digital receiver 501, the NO end of described second radio-frequency (RF) switch 503 is connected to the 3rd signal source 504.
In the present embodiment, described 3rd signal source 504 is the high dynamic range signal source for self-calibration function, it is switched to digital receiver 501 by the second radio-frequency (RF) switch 503, before every measurement, first primary calibration contrastive test is done to digital receiver 501, if find data exception, then can be shown in LCDs by software in time, to point out the using state of tester's inspection apparatus, avoid the generation of fail data.
The principle of work of self calibration passive cross modulation test instrument of the present invention is as follows: the first signal source 101, the two paths of signals that secondary signal source 102 exports amplifies respectively through the first linear amplifier 103 and the second linear amplifier 104, again respectively by the first coupling mechanism 201, second coupling mechanism 202, first isolator 203 and the second isolator 204 are input to the input end of power combing unit 30, through broadband, two-way power signal is synthesized a road signal by the 3dB electric bridge 301 of low intermodulation numerical value and the first load 302, signal syntheses transmitting is exported to measured piece panel 100 through the first low inter-modulation duplexer 401 by signal that described 3dB electric bridge 301 exports again, then finally absorbed by the second load 403 after being exported by the second low inter-modulation duplexer 402, wherein, part power signal is reflected (consequent passive intermodulation signal) by measured piece panel 100 test port, the signal reflected by the receiving end of the first low inter-modulation duplexer 401 is launch intermodulation product, the signal reflected by the receiving end of the second low inter-modulation duplexer 402 is launch intermodulation product, described transmitting intermodulation product enters digital receiver 501 through the first radio-frequency (RF) switch 502 of high-isolation and carries out analytical sampling process, be shown in intuitively in the LCD screen of digital receiver 501 by the mode of programming software control numerical value.
Compared to prior art, self calibration passive cross modulation test instrument tool of the present invention has the following advantages: 1, the signal source module of high stable state, high dynamic range, and the dynamic range of output power is up to 100dB; 2, narrowband modulation receives and high efficiency converter technique, solves signal low-noise reception problem; 3, the design ap-plication of the passive network (broadband 3dB electric bridge, low inter-modulation duplexer etc.) of low intermodulation level; 4, the design ap-plication of low-power consumption high-power output linear amplifier; 5, bypass carries the radio-frequency (RF) switch of 50 ohm load, high-isolation.
To sum up, self calibration passive cross modulation test instrument of the present invention adopts the signal source module of high stable state, high dynamic range, the power level of stable output, at the test node of each power grade, comprehensive contrast scans is fast done once to digital receiver, find that there is the interface that abnormal data is shown to testing software in time, remind operating personnel's checkout equipment, reduce the generation of fail data.
Self calibration passive cross modulation test instrument of the present invention adopts the self calibration passive cross modulation test instrument of said structure technology, the testing requirement under each frequency range in mobile communcations system, each order can be met, ensure the reliability of test result simultaneously, substantially increase the testing efficiency of whole system, effectively reduce the generation of fail data.
Self calibration passive cross modulation test instrument of the present invention is by using without manpower intervention, adopting pneumatic transmission assembly to test, avoid electric device to generate an electromagnetic field potato masher antenna intermodulation index test, both improve antenna product measuring stability, the accuracy of antenna product intermodulation index test and consistance are guaranteed, the personnel that simultaneously again reduce drop into, achieve automated production, substantially increase the testing efficiency of antenna product.
Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present invention or essential characteristic, the present invention can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.
Claims (6)
1. a self calibration passive cross modulation test instrument, it is characterized in that, it comprises: the signal amplification unit connected successively, power detecting unit, power combing unit, low intermodulation parasitic element and reception processing unit, described signal amplification unit, described power combing unit comprises 3dB electric bridge and the first load, described low intermodulation parasitic element comprises the first low inter-modulation duplexer, second low inter-modulation duplexer and the second load, first input end and second input end of described 3dB electric bridge are connected to power detecting unit, first output terminal of described 3dB electric bridge is connected to the input end of the first load, second output terminal of described 3dB electric bridge is connected to the transmitting terminal of the first low inter-modulation duplexer, the transmitting terminal of described second low inter-modulation duplexer is connected to the input end of the second load, the common port of described first low inter-modulation duplexer and the second low inter-modulation duplexer is connected to measured piece panel, the receiving end of described first low inter-modulation duplexer and the receiving end of the second low inter-modulation duplexer are all connected to reception processing unit.
2. self calibration passive cross modulation test instrument according to claim 1, it is characterized in that, described reception processing unit comprises digital receiver, first radio-frequency (RF) switch, second radio-frequency (RF) switch and the 3rd signal source, the normally closed port of described first radio-frequency (RF) switch is connected to the receiving end of the first low inter-modulation duplexer, the often ported receiving end being connected to the second low inter-modulation duplexer of described first radio-frequency (RF) switch, the public port of described first radio-frequency (RF) switch is connected to the normally closed port of the second radio-frequency (RF) switch, the public port of described second radio-frequency (RF) switch is connected to the input end of digital receiver, the often ported of described second radio-frequency (RF) switch is connected to the 3rd signal source.
3. self calibration passive cross modulation test instrument according to claim 2, is characterized in that, described 3rd signal source is the high dynamic range signal source for self-calibration function.
4. self calibration passive cross modulation test instrument according to claim 2, it is characterized in that, described signal amplification unit comprises the first signal source, secondary signal source, the first linear amplifier and the second linear amplifier, described first signal source is connected to the input end of the first linear amplifier, described secondary signal source is connected to the input end of the second linear amplifier, and the output terminal of described first linear amplifier and the second linear amplifier is all connected to power combing unit.
5. self calibration passive cross modulation test instrument according to claim 4, it is characterized in that, described power detecting unit comprises the first coupling mechanism, the second coupling mechanism, the first isolator and the second isolator, the input end of described first coupling mechanism is connected to the output terminal of the first linear amplifier, the output terminal of described first coupling mechanism is connected to the input end of the first isolator, and the output terminal of described first isolator is connected to the first input end of 3dB electric bridge; The input end of described second coupling mechanism is connected to the output terminal of the second linear amplifier, and the output terminal of described second coupling mechanism is connected to the input end of the second isolator, and the output terminal of described second isolator is connected to the second input end of 3dB electric bridge.
6. self calibration passive cross modulation test instrument according to claim 5, it is characterized in that, described power detecting unit also comprises: an AD sampling module and the 2nd AD sampling module, the input end of a described AD sampling module is connected to the coupled end of described first coupling mechanism, and the input end of described 2nd AD sampling module is connected to the coupled end of described second coupling mechanism.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788784A (en) * | 2015-11-25 | 2017-05-31 | 西安交通大学 | Dynamic passive intermodulation reference signal generator |
| CN107769869A (en) * | 2016-08-18 | 2018-03-06 | 京信通信系统（中国）有限公司 | Multi-signal passive intermodulation test system |
| CN108199790A (en) * | 2017-11-29 | 2018-06-22 | 西安空间无线电技术研究所 | The waveguide test system and test method of a kind of passive intermodulation of metal net performance |
| CN110943790A (en) * | 2019-12-15 | 2020-03-31 | 南京纳特通信电子有限公司 | Blind plugging table type intermodulation tester |
| CN111327374A (en) * | 2018-12-17 | 2020-06-23 | 天津光电通信技术有限公司 | Method for testing AD performance |
| CN114325340A (en) * | 2021-12-31 | 2022-04-12 | 南京矽典微系统有限公司 | Test system and test method of radio frequency chip |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583609U (en) * | 2009-12-03 | 2010-09-15 | 南京纳特通信电子有限公司 | Portable type passive intermodulation tester |
| CN202002984U (en) * | 2011-01-18 | 2011-10-05 | 南京纳特通信电子有限公司 | Multi-frequency-band passive intermodulation test instrument |
| CN202008510U (en) * | 2011-01-18 | 2011-10-12 | 南京纳特通信电子有限公司 | Comprehensive tester for passive isolator |
| CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
| CN103227687A (en) * | 2013-04-07 | 2013-07-31 | 南京纳特通信电子有限公司 | Passive multi-step intermodulation tester |
| CN103675448A (en) * | 2013-12-16 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Vector measurement method for passive intermodulation interference |
| CN104360234A (en) * | 2014-11-04 | 2015-02-18 | 中国电子科技集团公司第四十一研究所 | Linear frequency hopping incoherent detecting passive intermodulation outlier locating method |
| CN104506258A (en) * | 2014-11-04 | 2015-04-08 | 中国电子科技集团公司第四十一研究所 | Passive intermodulation (PIM) test method for pulse system |
-
2015
- 2015-04-18 CN CN201510184124.4A patent/CN104880621B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201583609U (en) * | 2009-12-03 | 2010-09-15 | 南京纳特通信电子有限公司 | Portable type passive intermodulation tester |
| CN202002984U (en) * | 2011-01-18 | 2011-10-05 | 南京纳特通信电子有限公司 | Multi-frequency-band passive intermodulation test instrument |
| CN202008510U (en) * | 2011-01-18 | 2011-10-12 | 南京纳特通信电子有限公司 | Comprehensive tester for passive isolator |
| CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
| CN103227687A (en) * | 2013-04-07 | 2013-07-31 | 南京纳特通信电子有限公司 | Passive multi-step intermodulation tester |
| CN103675448A (en) * | 2013-12-16 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Vector measurement method for passive intermodulation interference |
| CN104360234A (en) * | 2014-11-04 | 2015-02-18 | 中国电子科技集团公司第四十一研究所 | Linear frequency hopping incoherent detecting passive intermodulation outlier locating method |
| CN104506258A (en) * | 2014-11-04 | 2015-04-08 | 中国电子科技集团公司第四十一研究所 | Passive intermodulation (PIM) test method for pulse system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788784A (en) * | 2015-11-25 | 2017-05-31 | 西安交通大学 | Dynamic passive intermodulation reference signal generator |
| CN107769869A (en) * | 2016-08-18 | 2018-03-06 | 京信通信系统（中国）有限公司 | Multi-signal passive intermodulation test system |
| CN108199790A (en) * | 2017-11-29 | 2018-06-22 | 西安空间无线电技术研究所 | The waveguide test system and test method of a kind of passive intermodulation of metal net performance |
| CN111327374A (en) * | 2018-12-17 | 2020-06-23 | 天津光电通信技术有限公司 | Method for testing AD performance |
| CN111327374B (en) * | 2018-12-17 | 2022-03-01 | 天津光电通信技术有限公司 | Method for testing AD performance |
| CN110943790A (en) * | 2019-12-15 | 2020-03-31 | 南京纳特通信电子有限公司 | Blind plugging table type intermodulation tester |
| CN114325340A (en) * | 2021-12-31 | 2022-04-12 | 南京矽典微系统有限公司 | Test system and test method of radio frequency chip |
| CN114325340B (en) * | 2021-12-31 | 2024-01-19 | 南京矽典微系统有限公司 | Test system and test method of radio frequency chip |
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