CN103809056B - S parameter and passive intermodulation integrated test system - Google Patents
S parameter and passive intermodulation integrated test system Download PDFInfo
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- CN103809056B CN103809056B CN201410050967.0A CN201410050967A CN103809056B CN 103809056 B CN103809056 B CN 103809056B CN 201410050967 A CN201410050967 A CN 201410050967A CN 103809056 B CN103809056 B CN 103809056B
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Abstract
The invention discloses a kind of S parameter and passive intermodulation integrated test system, including equipment under test, Network Analyzer, some PIM units, it is characterized in that, also include PSS signal maincenter, described equipment under test connects the input of PSS signal maincenter, and the outfan of described PSS signal maincenter connects Network Analyzer and PIM unit respectively.The S parameter of the present invention and passive intermodulation integrated test system are capable of the one-stop PIM test completing S parameter and multiple frequency band, thus increase substantially the testing efficiency of product, reduce testing time and testing cost.
Description
Technical field
The present invention relates to a kind of test system, be specifically related to a kind of S parameter and passive intermodulation integrated test system, belong to product testing equipment field.
Background technology
Current fast-developing Communications Market proposes the highest requirement to the passive intermodulation index with this device matched, wherein PIM(Passive Inter Modulation, i.e. passive intermodulation) test of index makes product expend many time in test link, especially test the PIM of multiple frequency bands of device, its time expended is the hugest, testing efficiency is very low, and the testing cost of consuming is the highest.
In addition, prior art exists and is used for testing equipment under test (i.e. DUT, device under test) the VNA(Vector network analyzer of S parameter, i.e. Network Analyzer), prior art tests the S parameter of equipment under test and passive intermodulation be separate from test so also make testing efficiency the lowest, the testing cost of consuming is the highest.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to provide a kind of S parameter and passive intermodulation integrated test system.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
S parameter and passive intermodulation integrated test system, including equipment under test, Network Analyzer, some PIM units, it is characterized in that, also include PSS signal maincenter, described equipment under test connects the input of PSS signal maincenter, and the outfan of described PSS signal maincenter connects Network Analyzer and PIM unit respectively.
Aforesaid S parameter and passive intermodulation integrated test system, it is characterized in that, described PSS signal maincenter includes some switching switches set, described switching switches set includes the first switch, second switch, described first switch and second switch are single pole multiple throw, described first switch includes multiple input and an outfan, described second switch includes an input and multiple outfan, described equipment under test connects arbitrary input of the first switch, the outfan of described first switch connects the input of second switch, described PIM unit is connected with an outfan of second switch respectively with Network Analyzer.
Aforesaid S parameter and passive intermodulation integrated test system, it is characterized in that, also include the 3rd switch, described 3rd switch includes input and outfan, the input of described 3rd switch is connected with an outfan of second switch respectively with PIM unit, and the outfan of described 3rd switch connects Network Analyzer.
Aforesaid S parameter and passive intermodulation integrated test system, it is characterized in that, also include the 3rd switch, described 3rd switch includes two inputs and two outfans, the outfan of each 3rd switch is all connected with a Network Analyzer, described PSS signal maincenter includes first group of switching switches set and second group of switching switches set, in one outfan of described 3rd switch and first group of switching switches set, an outfan of second switch is connected, and in another outfan of described 3rd switch and second group of switching switches set, an outfan of second switch is connected.
The invention have benefit that: the S parameter of the present invention and passive intermodulation integrated test system are capable of the one-stop PIM test completing S parameter and multiple frequency band, thus increase substantially the testing efficiency of product, reduce testing time and testing cost.
Accompanying drawing explanation
Fig. 1 is a structural representation being preferable to carry out of S parameter of the present invention and passive intermodulation integrated test system；
Fig. 2 is a structural representation being preferable to carry out of the PSS signal maincenter of the present invention.
The implication of reference in figure:
1, equipment under test, 2, the first switch of first group of switching switches set, 3, the second switch of first group of switching switches set, 4, the first switch of second group of switching switches set, 5, the second switch of second group of switching switches set, 6, Network Analyzer, 7, first port of first PIM unit, 8, first port of second PIM unit, 9, second port of second PIM unit, second port of 10, first PIM unit, the 11, the 3rd switch, 12, ultralow intermodulation absorbing load, 13, ultralow intermodulation attenuator.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention made concrete introduction.
With reference to shown in Fig. 1, S parameter of the present invention and passive intermodulation integrated test system, including equipment under test 1, Network Analyzer 6, some PIM units, also include PSS signal maincenter, equipment under test 1 connects the input of PSS signal maincenter, and the outfan of PSS signal maincenter connects Network Analyzer 6 and PIM unit respectively.In the present invention, the quantity of PIM unit can be one, it is also possible to is multiple, and the selection of its quantity determines according to test request.Such as when needs carry out S parameter and single-frequency point passive cross modulation test, the outfan of the PSS signal maincenter in Fig. 1 connects a PIM intermodulation testing instrument and a Network Analyzer 6 can meet requirement, for another example, when needs carry out S parameter and 2 frequency PIM test, the outfan of the PSS signal maincenter in Fig. 1 connects a PIM intermodulation testing instrument and two Network Analyzers 6 can meet requirement.For another example, when needs carry out S parameter and 3 frequency PIM test, the outfan of the PSS signal maincenter in Fig. 1 connects a PIM intermodulation testing instrument and three Network Analyzers 6 can meet requirement, therefore, PIM unit 1 to the PIM unit n of mark in accompanying drawing 1, n therein is any positive integer.Additionally, in the present invention, type and the quantity of equipment under test 1 are not limiting as, equipment under test 1 can be the passive devices such as antenna, wave filter, power splitter, bonder and cable assembly.PSS signal maincenter (please explain the implication of so name, and what meaning PSS is) in the present invention, it for connecting VNA and PIM unit respectively by equipment under test 1, thus completes different test contents by the switching of inner passage in PSS signal maincenter.Thus, present invention could apply to the quick test in the passive device fields such as antenna, wave filter, power splitter, bonder and cable assembly.
The structure that be preferable to carry out of the PSS signal maincenter of the present invention is described in detail below.As shown in Figure 2, PSS signal maincenter includes some switching switches set, switching switches set includes the first switch 2, second switch 3, first switch 2 and second switch 3 are single pole multiple throw, first switch 4 includes multiple input and an outfan, second switch includes an input and multiple outfan, equipment under test 1 connects arbitrary input of the first switch 4, the outfan of the first switch connects the input of second switch 5, and PIM unit is connected with an outfan of second switch 5 respectively with Network Analyzer 6.
In each switching switches set, time actually used, the first switch and second switch 5 can be cut, thus realize equipment under test 1 and connect from the switching of Network Analyzer 6 and the different port of different PIM units, thus realize different test contents.
In reality, in order to be better achieved the switching between equipment under test 1 and Network Analyzer 6 and break-make, the present invention can also include the 3rd switch 11,3rd switch 11 includes input and outfan, the input of the 3rd switch 11 is connected with an outfan of second switch respectively with PIM unit, and the outfan of the 3rd switch 11 connects Network Analyzer 6.Such that it is able to open realization to the switching between equipment under test 1 and Network Analyzer 6 by the break-make of the 3rd switch 11.The present invention is not intended to input and the quantity of outfan of the 3rd switch 11, the outfan of the 3rd switch 11 can also connect one or more Network Analyzer 6, when the outfan of the 3rd switch 11 connects multiple Network Analyzer 6, can realize for an equipment under test 1, the S parameter of equipment under test 1 can be tested by different Network Analyzers 6, so that the measurement of S parameter is more accurate by switching the 3rd switch 11 realization.
Preferred embodiment when in the PSS signal maincenter of the present invention use multiple switching switches set is described below.PSS signal maincenter to use two switching switches set illustrate, can analogize when there is more switching switches set.As shown in Figure 2, the most also include the 3rd switch 11,3rd switch 11 includes two inputs and two outfans, the outfan of each 3rd switch 11 is all connected with a Network Analyzer 6, PSS signal maincenter includes first group of switching switches set and second group of switching switches set, in one outfan of the 3rd switch 11 and first group of switching switches set, an outfan of second switch is connected, and in another outfan of the 3rd switch 11 and second group of switching switches set, an outfan of second switch is connected.
When the 3rd switch 11 includes two inputs and two outfans, in Fig. 2, two outfans connect respectively a Network Analyzer 6, therefore when a certain equipment under test 1 being carried out the measurement of S parameter, the 3rd switch 11 can be switched, each Network Analyzer 6 all carries out the measurement of S parameter, so that the measurement for S parameter is more accurate.On the other hand, when the input of the first switch in the switching switches set of each group is respectively connected with equipment under test 1 in such as Fig. 2, as shown in Figure 2, one outfan of the second switch in first group of switching switches set connects an input of the 3rd switch 11, one outfan of the second switch in second group of switching switches set connects another input of the 3rd switch 11, the present invention can be by switching the 3rd switch 11, the outfan and the Network Analyzer 6 that realize second switch in first group of switching switches set connect, and simultaneously an outfan of second switch is connected with another Network Analyzer 6 in second group of switching switches set, thus realize the parallel of multiple equipment under tests 1 is tested S parameter simultaneously.
Further, in the present invention, the outfan of the second switch of each switching switches set can be provided with multiple, and therefore the second switch of each switching switches set can connect multiple PIM unit, multiple ports of a PIM unit can also be connected, thus realize different test contents.Such as, in Fig. 2, first group of switching switches set connects second port 9 of second PIM unit and second port 10 of first PIM unit, and second group of switching switches set connects first port 7 of first PIM unit and first port 8 of second PIM unit.
Additionally, to switching, switches set carries out first group of switching switches set, the differentiation of second group of switching switches set is convenient just to describing in the present invention, the differentiation that PIM unit carries out first PIM unit and second PIM unit is also convenient just to description.
To sum up, the S parameter of the present invention and passive intermodulation integrated test system are capable of the one-stop PIM test completing S parameter and multiple frequency band, thus increase substantially the testing efficiency of product, reduce testing time and testing cost.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, above-described embodiment limits the present invention, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained the most in any form, all falls within protection scope of the present invention.
Claims (3)
1.S parameter and passive intermodulation integrated test system, including equipment under test, Network Analyzer, some PIM units, it is characterized in that, also include PSS signal maincenter, described equipment under test connects the input of PSS signal maincenter, and the outfan of described PSS signal maincenter connects Network Analyzer and PIM unit respectively；Described PSS signal maincenter includes some switching switches set, described switching switches set includes the first switch, second switch, described first switch and second switch are single pole multiple throw, described first switch includes multiple input and an outfan, described second switch includes an input and multiple outfan, described equipment under test connects arbitrary input of the first switch, the outfan of described first switch connects the input of second switch, and described PIM unit is connected with an outfan of second switch respectively with Network Analyzer.
S parameter the most according to claim 1 and passive intermodulation integrated test system, it is characterized in that, also include the 3rd switch, described 3rd switch includes input and outfan, the input of described 3rd switch is connected with an outfan of second switch respectively with PIM unit, and the outfan of described 3rd switch connects Network Analyzer.
S parameter the most according to claim 1 and passive intermodulation integrated test system, it is characterized in that, also include the 3rd switch, described 3rd switch includes two inputs and two outfans, the outfan of each 3rd switch is all connected with a Network Analyzer, described PSS signal maincenter includes first group of switching switches set and second group of switching switches set, in one outfan of described 3rd switch and first group of switching switches set, an outfan of second switch is connected, in another outfan of described 3rd switch and second group of switching switches set, an outfan of second switch is connected.
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| CN201410050967.0A CN103809056B (en) | 2014-02-14 | 2014-02-14 | S parameter and passive intermodulation integrated test system |
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| US11041894B2 (en) * | 2017-08-18 | 2021-06-22 | Rohde & Schwarz Gmbh & Co. Kg | Vector network analyzer with digital interface |
| CN109030960B (en) * | 2018-05-21 | 2021-03-19 | 广东通宇通讯股份有限公司 | S parameter testing method for 5G antenna filter integrated unit |
| CN108521309B (en) * | 2018-06-08 | 2020-09-01 | 中国电子科技集团公司第四十一研究所 | System and method for testing frequency sweep intermodulation distortion |
| CN108931704A (en) * | 2018-06-19 | 2018-12-04 | 南京纳特通信电子有限公司 | A kind of 32 ports band S parameter passive cross modulation test instrument |
| CN110261687B (en) * | 2019-06-19 | 2021-01-15 | 华南理工大学 | Large-scale array antenna measurement system, method, device and storage medium |
| CN110545144A (en) * | 2019-08-23 | 2019-12-06 | 深圳市信维通信股份有限公司 | Passive intermodulation test system of multiband multiaerial |
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