CN205159710U - Take matched load's switching device - Google Patents
Take matched load's switching device Download PDFInfo
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- CN205159710U CN205159710U CN201521016207.4U CN201521016207U CN205159710U CN 205159710 U CN205159710 U CN 205159710U CN 201521016207 U CN201521016207 U CN 201521016207U CN 205159710 U CN205159710 U CN 205159710U
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- housing
- matched load
- control circuit
- test
- switching device
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Abstract
The utility model discloses a take matched load's switching device, which comprises a housin, it connects to be equipped with test terminal joint and link on the relative both sides wall of casing respectively, the test terminal connects, the ON -OFF control circuit that the link connects by setting up in the casing draws forth, ON -OFF control circuit sets up on a circuit board, the circuit board is embedded in the spacing draw -in groove of casing, still be equipped with matched load on the circuit board, change over switch, change over switch has a control end and connects the intercommunication so that switch the test terminal joint with matched load or link, even there is the power connecting wire on the circuit board, be equipped with the insulator on the casing lateral wall, power connecting wire warp the insulator is worn out, is equipped with the tripe window at the top of casing, is equipped with the sucking disc in the bottom of casing. This device simple structure, heat dispersion is good, and the installation is firm, and it can eliminate the curved wave phenomenon of test, improves the accuracy of test result.
Description
Technical field
The utility model relates to wireless communication technology field, is specifically related to a kind of switching device with matched load.
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 testing apparatus to be 4,6,8 or 12 ports by 2 ports-Extendings of vector network analyzer.At multiport testing apparatus in test process, because the circuit design principle of multiport testing apparatus 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, 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 switching device with matched load, this apparatus structure is simple, heat dispersion is good, install firm, matched load arranges on the wiring board in switching device by it, the corresponding port being realized multiport device by diverter switch is communicated with multiport testing apparatus 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 switching device with matched load, comprise housing, the two side that housing is relative is respectively equipped with the test lead joint be electrically connected with multiport device to be measured and the link joint be electrically connected with multiport testing apparatus, described test lead joint, link joint is drawn by the ON-OFF control circuit be arranged in housing, described ON-OFF control circuit is arranged on a wiring board, described wiring board is embedded in the spacing draw-in groove of housing, described ON-OFF control circuit is also provided with matched load in the circuit board, diverter switch, described diverter switch has a control end, described control end makes diverter switch action based on the external command that ON-OFF control circuit receives, with the connected state between switch test end connector and matched load or between test lead joint and link joint, be connected with the electric power connection line of powering for ON-OFF control circuit in the circuit board, housing sidewall is provided with insulator, electric power connection line passes through described insulator and is communicated with external power source, the shutter for dispelling the heat is provided with at the top of housing, the sucker for stationary housing is provided with in the bottom of housing.
Operation principle of the present utility model: when a test multiport device, software in the vector network analyzer be connected with multiport testing apparatus can control the test port number receiving multiport testing apparatus automatically, by connecting the switching device arranging band matched load between multiport testing apparatus and multiport device, diverter 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 joint is communicated with by ON-OFF control circuit with link joint by diverter switch, test port on multiport device and multiport testing apparatus signal communication, when the test port on multiport device is not selected, test lead is communicated with by ON-OFF control circuit with matched load by diverter switch, test port on multiport device is communicated with matched load, and by electric power connection line for wiring board provides power supply, the insulator be arranged on housing improves the fail safe of device, the shutter being arranged on case top improves the heat dispersion of device, extend the useful life of device, the sucker being arranged on housing bottom makes the installation of device more firm, in the process that multiport device property is tested, on multiport device to be measured, not selected port is directly communicated with by diverter 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 that stube cable produces in transmitting procedure so that initiation test curve wave phenomenon, the Insertion Loss of multiport device is tested after switching device is set between multiport device and multiport testing apparatus, 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: this apparatus structure is simple, heat dispersion is good, install firm, matched load arranges on the wiring board in switching device by it, the corresponding port being realized multiport device by diverter switch is communicated with multiport testing apparatus 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 ON-OFF control circuit structural representation.
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 Fig. 1, shown in 2, a kind of switching device with matched load, comprise housing 1, the two side that housing 1 is relative is respectively equipped with the test lead joint 3 be electrically connected with multiport device 2 to be measured and the link joint 5 be electrically connected with multiport testing apparatus 4, described test lead joint 3, link joint 5 is drawn by the ON-OFF control circuit be arranged in housing 1, described ON-OFF control circuit is arranged on a wiring board, described wiring board is embedded in the spacing draw-in groove of housing 1, described ON-OFF control circuit is also provided with matched load 6 in the circuit board, diverter switch 7, described matched load 6 is the resistance of 75 Ω, described diverter switch 7 has a control end 8, described control end 8 carrys out the connected state between switch test end connector 3 and matched load 6 or between test lead joint 3 and link joint 5 based on the external command that ON-OFF control circuit receives, be connected with the electric power connection line 9 of powering for ON-OFF control circuit in the circuit board, housing 1 sidewall is provided with insulator 10, electric power connection line 9 passes through described insulator 10 and is communicated with external power source, the shutter 11 for dispelling the heat is provided with at the top of housing 1, the sucker (not shown) for stationary housing 1 is provided with in the bottom of housing 1.
Operation principle of the present utility model: when a test multiport device 2, software in the vector network analyzer be connected with multiport testing apparatus 4 can control the test port number receiving multiport testing apparatus 4 automatically, by connecting the switching device arranging band matched load 6 between multiport testing apparatus 4 and multiport device 2, diverter switch 7 receives the external command action that control end 8 receives based on ON-OFF control circuit, when the test port on multiport device 2 is selected, test lead joint 3 is communicated with by ON-OFF control circuit with link joint 5 by diverter switch 7, test port on multiport device 2 and multiport testing apparatus 4 signal communication, when the test port on multiport device 2 is not selected, test lead is communicated with by ON-OFF control circuit with matched load 6 by diverter switch 7, test port on multiport device 2 is communicated with matched load 6, and by electric power connection line 9 for wiring board provides power supply, the insulator 10 be arranged on housing 1 improves the fail safe of device, the shutter 11 being arranged on housing 1 top improves the heat dispersion of device, extend the useful life of device, the sucker be arranged on bottom housing 1 makes the installation of device more firm, in the process to multiport device 2 characteristic test, on multiport device 2 to be measured, not selected port is directly communicated with by diverter switch 7 with the matched load 6 arranged in the circuit board, do not need by external cable, matched load 6 to be connected on not selected port, avoid electromagnetic interference that stube cable produces in transmitting procedure so that initiation test curve wave phenomenon, the Insertion Loss testing multiport device 2 after being with the switching device of matched load is set between multiport device 2 and multiport testing apparatus 4, 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 control end 8 makes the specific implementation of diverter switch action be based on the external command that ON-OFF control circuit receives: in ON-OFF control circuit, arrange a button 12, the mode of operation that described ON-OFF control circuit receives button 12 makes diverter switch 7 action, described button is arranged on the arbitrary face of housing 1, is realized the gating function of diverter switch 7 according to the selected or not selected situation of test port on multiport device 2 by the button 12 in ON-OFF control circuit.
Further, described diverter switch 7 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 electric power connection line 9 is connected with 3.3V DC power supply, for ON-OFF control circuit provides power supply.
Further, described insulator 10 utilizes by the ring flange of its one end that AB is gluing to be connected on housing 1 sidewall, and insulator 10 is firmly arranged on housing 1 sidewall, and electric power connection line 9 passes housing 1 by insulator 10 and is connected with external power source.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode 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 (5)
1. the switching device with matched load, comprise housing, it is characterized in that, the two side that housing is relative is respectively equipped with the test lead joint be electrically connected with multiport device to be measured and the link joint be electrically connected with multiport testing apparatus, described test lead joint, link joint is drawn by the ON-OFF control circuit be arranged in housing, described ON-OFF control circuit is arranged on a wiring board, described wiring board is embedded in the spacing draw-in groove of housing, described ON-OFF control circuit is also provided with matched load in the circuit board, diverter switch, described diverter switch has a control end, described control end makes diverter switch action based on the external command that ON-OFF control circuit receives, with the connected state between switch test end connector and matched load or between test lead joint and link joint,
Be connected with the electric power connection line of powering for ON-OFF control circuit in the circuit board, housing sidewall is provided with insulator, electric power connection line passes through described insulator and is communicated with external power source, being provided with the shutter for dispelling the heat at the top of housing, being provided with the sucker for stationary housing in the bottom of housing.
2. the switching device of band matched load according to claim 1, it is characterized in that, described control end makes the specific implementation of diverter 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 diverter switch action, and described button is arranged on the arbitrary face of housing.
3. the switching device of band matched load according to claim 1 and 2, is characterized in that, described diverter switch is SPDT radio-frequency (RF) switch.
4. the switching device of band matched load according to claim 3, is characterized in that, described electric power connection line is connected with 3.3V DC power supply.
5. the switching device of band matched load according to claim 4, is characterized in that, described insulator utilizes by the ring flange of its one end that AB is gluing to be connected in housing sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016207.4U CN205159710U (en) | 2015-12-08 | 2015-12-08 | Take matched load's switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521016207.4U CN205159710U (en) | 2015-12-08 | 2015-12-08 | Take matched load's switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205159710U true CN205159710U (en) | 2016-04-13 |
Family
ID=55695365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521016207.4U Active CN205159710U (en) | 2015-12-08 | 2015-12-08 | Take matched load's switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205159710U (en) |
-
2015
- 2015-12-08 CN CN201521016207.4U patent/CN205159710U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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. |
|
| CP01 | Change in the name or title of a patent holder |