CN205176076U - Switching device who connects multiport testing arrangement and multiport device - Google Patents
Switching device who connects multiport testing arrangement and multiport device Download PDFInfo
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- CN205176076U CN205176076U CN201521016107.1U CN201521016107U CN205176076U CN 205176076 U CN205176076 U CN 205176076U CN 201521016107 U CN201521016107 U CN 201521016107U CN 205176076 U CN205176076 U CN 205176076U
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Abstract
The utility model discloses a switching device who connects multiport testing arrangement and multiport device, be provided with the circuit board in the switching device, be provided with ON -OFF control circuit on the circuit board, ON -OFF control circuit is provided with: test terminal, first link, second link, change over switch, change over switch has a control end, the outside instruction makes the change over switch action to the control end based on ON -OFF control circuit received, and when change over switch communicate the test terminal with first link, the corresponding port of multiport device and multiport testing arrangement signal intercommunication communicate test terminal and second link the corresponding port and the matched load intercommunication of multiport device as change over switch. The curved wave phenomenon of test can be eliminated to this device, the accuracy of inserting the characteristic that index curves such as damages, return loss can more level and smooth, real reflection device, improvement test result of test multiport device.
Description
Technical field
The utility model relates to wireless communication technology field, is specifically related to a kind of switchgear connecting multiport proving installation and multiport device.
Background technology
Improvement along with integrated circuit technique and the raising to performance requirement, the use of multiport device is more prevalent.In order to ensure the normal operation of product, the radiofrequency characteristicses such as the transmission to multiport device, reflection, isolation are needed to test.Usually need to utilize the characteristic of vector network analyzer to device to measure, early stage vector network analyzer generally only has two test ports, in order to measure multiport device, just need between each port of measured device, repeatedly to convert test cable and termination matching load, until complete the measurement to all of the port.In order to improve testing efficiency, testing multiport device property simultaneously, usually utilizing multiport proving installation to be 4,6,8 or 12 ports by 2 ports-Extendings of vector network analyzer.At multiport proving installation in test process, because the circuit design principle of multiport proving installation and error model correcting mode determine when reality is tested, only the port chosen is tested and calibrated, and not selected port does not carry out testing and calibrating.Because characterisitic parameter measures the data obtained under all of the port mates unreflected situation, so not selected port also must matching connection load on tested multiport device.Usually external cable is utilized to be connected to by matched load on measured device on not selected port in the prior art, because external cable transmission range is relatively long to choosing port test to there is electromagnetic interference (EMI), occur that wave phenomenon appears in test curve, affect the accuracy of test result.
Utility model content
The purpose of this utility model is to provide a kind of switchgear connecting multiport proving installation and multiport device, matched load arranges on the wiring board in switchgear by it, the corresponding port being realized multiport device by change-over switch is communicated with multiport proving installation or matched load direct signal, this device can eliminate the wave phenomenon of test curve, the index curve such as Insertion Loss, return loss of test multiport device can the characteristic of more level and smooth, real reflection device, improves the accuracy of test result.
The purpose of this utility model realizes by the following technical solutions:
A kind of switchgear connecting multiport proving installation and multiport device, wherein, be provided with wiring board in described switchgear, described wiring board is provided with ON-OFF control circuit, described ON-OFF control circuit is provided with: in order to the test lead be electrically connected with multiport device to be measured; In order to the first link be electrically connected with multiport proving installation; In order to the second link be electrically connected with matched load, described matched load is arranged in the circuit board; In order to the change-over switch of switch test end and the first link or the second link connected state, described change-over switch has a control end, described control end makes change-over switch action based on the external command that ON-OFF control circuit receives, when test lead is communicated with the first link by change-over switch, the corresponding port of multiport device and multiport proving installation signal communication, when test lead is communicated with the second link by change-over switch, the corresponding port of multiport device is communicated with matched load.
Principle of work of the present utility model: when a test multiport device, software in the vector network analyzer be connected with multiport proving installation can control the test port number receiving multiport proving installation automatically, by arranging switchgear between connection multiport proving installation and multiport device, change-over switch receives the external command action that control end receives based on ON-OFF control circuit, when the test port on multiport device is selected, test lead is communicated with the first link by change-over switch, test port on multiport device and multiport proving installation signal communication, when the test port on multiport device is not selected, test lead is communicated with the second link by change-over switch, test port on multiport device is communicated with matched load, in the process that multiport device property is tested, on multiport device to be measured, not selected port is directly communicated with by change-over switch with the matched load arranged in the circuit board, do not need by external cable, matched load to be connected on not selected port, avoid electromagnetic interference (EMI) that stube cable produces in transmitting procedure so that initiation test curve wave phenomenon, the Insertion Loss of multiport device is tested after switchgear is set between multiport device and multiport proving installation, the index curves such as return loss can be more level and smooth, the characteristic of real reaction member, the accuracy of final raising test result.
Owing to have employed technique scheme, the utility model has the following advantages: matched load arranges on the wiring board in switchgear by it, the corresponding port being realized multiport device by change-over switch is communicated with multiport proving installation or matched load direct signal, this device can eliminate the wave phenomenon of test curve, the index curve such as Insertion Loss, return loss of test multiport device can the characteristic of more level and smooth, real reflection device, improves the accuracy of test result.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect clearly and be easy to understand, below in conjunction with the drawings and specific embodiments, the utility model being further elaborated:
As shown in Figure 1, a kind of switchgear connecting multiport proving installation and multiport device, wherein, wiring board is provided with in described switchgear, described wiring board is provided with ON-OFF control circuit, and described ON-OFF control circuit is provided with: in order to the test lead be electrically connected with multiport device to be measured; In order to the first link be electrically connected with multiport proving installation; In order to the second link be electrically connected with matched load, described matched load is arranged in the circuit board; In order to the change-over switch of switch test end and the first link or the second link connected state, described change-over switch has a control end, described control end makes change-over switch action based on the external command that ON-OFF control circuit receives, when test lead is communicated with the first link by change-over switch, the corresponding port of multiport device and multiport proving installation signal communication, when test lead is communicated with the second link by change-over switch, the corresponding port of multiport device is communicated with matched load, and described matched load is the resistance of 75 Ω.
Principle of work of the present utility model: when a test multiport device, software in the vector network analyzer be connected with multiport proving installation can control the test port number receiving multiport proving installation automatically, by connecting the switchgear of multiport proving installation and multiport device, change-over switch receives the external command action that control end receives based on ON-OFF control circuit, when the test port on multiport device is selected, test lead is communicated with the first link by change-over switch, test port on multiport device and multiport proving installation signal communication, when the test port on multiport device is not selected, test lead is communicated with the second link by change-over switch, test port on multiport device is communicated with matched load, in the process that multiport device property is tested, on multiport device to be measured, not selected port is directly communicated with by change-over switch with the matched load arranged in the circuit board, do not need by external cable, matched load to be connected on not selected port, avoid electromagnetic interference (EMI) that stube cable produces in transmitting procedure so that initiation test curve wave phenomenon, the Insertion Loss of multiport device is tested after switchgear is set between multiport device and multiport proving installation, the index curves such as return loss can be more level and smooth, the characteristic of real reaction member, the accuracy of final raising test result.
Further, described change-over switch is SPDT radio-frequency (RF) switch, utilizes the switching life-span length of electronically controlled single-pole double throw RF switch, favorable repeatability, switch speed fast.
Further, described control end makes the specific implementation of change-over switch action be based on the external command that ON-OFF control circuit receives: in ON-OFF control circuit, arrange a button, the mode of operation that described ON-OFF control circuit receives button makes change-over switch action, is realized the gating function of change-over switch according to the selected or not selected situation of test port on multiport device by the button in ON-OFF control circuit.
ON-OFF control circuit in such scheme also can be made up of radio-frequency (RF) switch chip and peripheral circuit thereof, when the control level that radio-frequency (RF) switch chip receives is different, to the different control signal of the control end of change-over switch, and then making change-over switch action to switch in two states, the control level signal wherein inputted is sent by multiport proving installation.
As shown in Figure 2, power unit is divided at the utility model, chip part, control section, wherein power unit provides power supply for switchgear, power unit is connected with filter capacitor, EMI electromagnetism anti-interference filter and Voltagre regulator, input voltage provides 3.3V stable dc power supply through the backward switchgear of power unit process, chip section is divided into change-over switch actuating circuit, the test lead on wiring board is drawn together in chip section subpackage, first link, second link, matched load, change-over switch, test lead is in order to be electrically connected with multiport device to be measured, first link is in order to be electrically connected with multiport proving installation, second link is in order to be connected with the matched load arranged in the circuit board, change-over switch is in order to switch test end and the first link or the second link connected state, control section realizes the gating function to change-over switch, control section comprises control end, realize test lead by the gating controlling change-over switch to be communicated with the first link or the second link, thus realize multiport device corresponding port and be communicated with multiport proving installation or matched load, be specially when on multiport device, test port is selected, control end C1 input low level, control end C2 input high level, test lead is communicated with the first link by change-over switch, test port on multiport device and multiport proving installation signal communication, when on multiport device, test port is not selected, control end C1 input high level, control end C2 input low level, test lead is communicated with the second link by change-over switch, test port on multiport device is communicated with matched load, in multiport device property test process, not selected test port is directly communicated with matched load on wiring board, do not need external cable to be connected on test lead by matched load, efficiently avoid electromagnetic interference (EMI) that cable occurs in transmitting procedure and the impact on measured device characteristic test.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (3)
1. connect a switchgear for multiport proving installation and multiport device, it is characterized in that, be provided with wiring board in described switchgear, described wiring board is provided with ON-OFF control circuit, described ON-OFF control circuit is provided with:
In order to the test lead be electrically connected with multiport device to be measured;
In order to the first link be electrically connected with multiport proving installation;
In order to the second link be electrically connected with matched load, described matched load is arranged in the circuit board;
In order to the change-over switch of switch test end and the first link or the second link connected state, described change-over switch has a control end, described control end makes change-over switch action based on the external command that ON-OFF control circuit receives, when test lead is communicated with the first link by change-over switch, the corresponding port of multiport device and multiport proving installation signal communication, when test lead is communicated with the second link by change-over switch, the corresponding port of multiport device is communicated with matched load.
2. the switchgear of connection multiport proving installation according to claim 1 and multiport device, is characterized in that, described change-over switch is SPDT radio-frequency (RF) switch.
3. the switchgear of connection multiport proving installation according to claim 1 and 2 and multiport device, it is characterized in that, described control end makes the specific implementation of change-over switch action be based on the external command that ON-OFF control circuit receives: in ON-OFF control circuit, arrange a button, and the mode of operation that described ON-OFF control circuit receives button makes change-over switch action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016107.1U CN205176076U (en) | 2015-12-08 | 2015-12-08 | Switching device who connects multiport testing arrangement and multiport device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016107.1U CN205176076U (en) | 2015-12-08 | 2015-12-08 | Switching device who connects multiport testing arrangement and multiport device |
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| Publication Number | Publication Date |
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| CN205176076U true CN205176076U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521016107.1U Active CN205176076U (en) | 2015-12-08 | 2015-12-08 | Switching device who connects multiport testing arrangement and multiport device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276692A (en) * | 2017-06-28 | 2017-10-20 | 东莞华贝电子科技有限公司 | A kind of NFC function test device |
| WO2021008101A1 (en) * | 2019-07-17 | 2021-01-21 | 珠海纳睿达科技有限公司 | One-to-many port network measurement method, system, and apparatus, and storage medium |
-
2015
- 2015-12-08 CN CN201521016107.1U patent/CN205176076U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276692A (en) * | 2017-06-28 | 2017-10-20 | 东莞华贝电子科技有限公司 | A kind of NFC function test device |
| WO2021008101A1 (en) * | 2019-07-17 | 2021-01-21 | 珠海纳睿达科技有限公司 | One-to-many port network measurement method, system, and apparatus, and storage medium |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610041 Chengdu hi tech Zone, Sichuan Province, No. 14-16 Patentee after: Chengdu Tian DA Instrument Limited by Share Ltd Address before: 610041 Chengdu hi tech Zone, Sichuan Province, No. 14-16 Patentee before: CHENGDU TIANDA INSTRUMENT EQUIPMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |