CN221575372U - Radio frequency test function switching box - Google Patents
Radio frequency test function switching box Download PDFInfo
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- CN221575372U CN221575372U CN202322972007.7U CN202322972007U CN221575372U CN 221575372 U CN221575372 U CN 221575372U CN 202322972007 U CN202322972007 U CN 202322972007U CN 221575372 U CN221575372 U CN 221575372U
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- 238000012360 testing method Methods 0.000 title claims abstract description 97
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 12
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- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of radio frequency testing, and particularly relates to a radio frequency testing function switching box, which comprises: the input selection switch comprises a public end and a plurality of to-be-switched ends, the public end of the input selection switch is used for being electrically connected with the instrument, the to-be-switched end of the input selection switch is used for being electrically connected with the first end of the performance enhancement box, and the input selection switch is controlled to be switched to the corresponding to-be-switched end so that the first end of the corresponding performance enhancement box is connected into the signal path; and the output selection switch comprises a public end and a plurality of ends to be switched, the ends to be switched of the output selection switch are electrically connected with the second end of the performance enhancement box, the public end of the output selection switch is electrically connected with a tested piece, the output selection switch is controlled to be switched to the corresponding ends to be switched so that the second end of the corresponding performance enhancement box is connected into a signal path, the measuring capacity of the instrument is increased, the function is flexible and changeable, more testing application scenes are met, automatic switching is realized, the use is convenient, and the testing efficiency is high.
Description
Technical Field
The utility model belongs to the technical field of radio frequency testing, and particularly relates to a radio frequency testing function switching box.
Background
The radio frequency device is the core of wireless connection, and the radio frequency device is necessary wherever wireless connection is needed. The number of future global wireless connections will increase by a factor in the promotion of internet of things applications. Radio frequency devices have vital applications in both the consumer electronics and military industries, and industry capital and national funds will be increasingly valued. Under the assistance of capital of each party, the domestic radio frequency device industry will meet a new round of industry development opportunities.
The performance of the rf device, such as noise figure, S parameter, etc., needs to meet certain requirements to be applied, and thus, needs to be tested.
However, the manual test is inefficient, so that an automatic test equipment is urgently needed to improve the test efficiency.
Disclosure of utility model
The utility model aims to provide a radio frequency test function switching box with high test efficiency.
In order to achieve the above object, the present utility model provides a radio frequency test function switching box for connecting with a meter for measuring a performance index of a measured object and for switching a corresponding performance enhancement box into a signal path, the performance enhancement box for increasing the measurement capability of the meter, the radio frequency test function switching box comprising:
The input selection switch comprises a public end and a plurality of to-be-switched ends, the public end of the input selection switch is used for being electrically connected with the instrument, the to-be-switched end of the input selection switch is used for being electrically connected with the first end of the performance enhancement box, and the input selection switch is controlled to be switched to the corresponding to-be-switched end so that the first end of the corresponding performance enhancement box is connected into a signal path; and
The output selection switch comprises a public end and a plurality of to-be-switched ends, the to-be-switched ends of the output selection switch are electrically connected with the second end of the performance enhancement box, the public end of the output selection switch is used for being electrically connected with the tested piece, and the output selection switch is controlled to be switched to the corresponding to-be-switched end so that the second end of the corresponding performance enhancement box is connected into the signal path.
In some embodiments, the to-be-switched end of the input selection switch is electrically connected with the to-be-switched end of the output selection switch.
In some embodiments, the radio frequency test function switching box further comprises a meter selection switch, wherein a common end of the meter selection switch is electrically connected with a common end of the input selection switch, and a to-be-switched end of the meter selection switch is electrically connected with the meter.
In some embodiments, the radio frequency test function switching box further comprises:
A case;
The first end of the instrument interface is used for being electrically connected with the instrument, and the second end of the instrument interface is electrically connected with the end to be switched of the instrument selection switch; and
And the first end of the to-be-connected port is electrically connected with the public end of the output selection switch, and the second end of the to-be-connected port is used for being electrically connected with the to-be-tested piece.
In some embodiments, the number of input selector switches, the output selector switches, and the meter selector switches is a plurality.
In some embodiments, the radio frequency test function switching box further includes a tested piece port selection switch, a common end of the tested piece port selection switch is electrically connected with a common end of the output selection switch, and a to-be-switched end of the tested piece port selection switch is electrically connected with a port of the tested piece.
In some embodiments, the radio frequency test function switching box further comprises a port combination switch, wherein a common end of the port combination switch is electrically connected with a port of the tested piece, and a to-be-switched end of the port combination switch is electrically connected with a to-be-switched end of the tested piece port selection switch.
In some embodiments, the radio frequency test function switching box further includes a signal combining unit, where the signal combining unit includes a first signal selection switch, a second signal selection switch, and a first combiner, where a common end of the first signal selection switch is electrically connected to a first signal generating instrument, a first end to be switched of the first signal selection switch is electrically connected to a first end to be switched of the instrument selection switch, a second end to be switched of the first signal selection switch is electrically connected to a first input end of the first combiner, a common end of the second signal selection switch is electrically connected to a second signal generating instrument, a first end to be switched of the second signal selection switch is electrically connected to a second input end of the first combiner, and an output end of the first combiner is electrically connected to a second end to be switched of the instrument selection switch.
In some embodiments, the signal combining unit further includes a second combiner, the third to-be-switched end of the first signal selection switch is electrically connected with the first input end of the second combiner, the second to-be-switched end of the second signal selection switch is electrically connected with the second input end of the second combiner, and the output end of the second combiner is electrically connected with the third to-be-switched end of the meter selection switch.
In some embodiments, the input selector switch, the output selector switch, and the meter selector switch are radio frequency switches, and the meter interface and/or the port to be connected is an SMA connector.
Compared with the prior art, the utility model has the beneficial effects that:
According to the radio frequency test function switching box provided by the application, the public end of the input selection switch is electrically connected with the instrument, the to-be-switched end of the input selection switch is electrically connected with the first end of the performance enhancement box, the to-be-switched end of the output selection switch is electrically connected with the second end of the performance enhancement box, the public end of the output selection switch is electrically connected with a tested piece, and the performance enhancement box is connected into a signal path by controlling the input selection switch and the output selection switch to be switched to the corresponding to-be-switched end, so that the measurement capability of the instrument is improved, the test capability of a test system is improved, and the corresponding performance enhancement box can be connected as required, so that the functions are flexible and changeable, more test application scenes are met, automatic switching is realized, the use is convenient, and the test efficiency is high.
Drawings
FIG. 1 is a schematic diagram of a switching box for RF test function according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a radio frequency switch according to an embodiment of the present application;
Fig. 3 is a schematic circuit diagram of a radio frequency switch according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a switching box for RF testing according to an embodiment of the present application;
FIG. 5 is a schematic circuit diagram of a switching box for RF test function according to an embodiment of the present application;
fig. 6 is a schematic circuit diagram of a switching box for a radio frequency test function according to an embodiment of the present application.
In the figure:
100. A radio frequency test function switching box; 10. an input selection switch; 11. a public end, 12, an end to be switched; 13. a first end to be switched; 14. a second end to be switched; 15. a third to-be-switched end; 20. an output selection switch; 30. an instrument selection switch; 40. a case; 50. an instrument interface; 60. a to-be-connected port; 70. a port selection switch of the tested piece; 80. a port combination switch; 90. a signal combining unit; 91. a first signal selection switch; 92. a second signal selection switch; 93. a first combiner; 94. a second combiner; 200. a performance enhancement box; 300. a meter; 400. and a measured piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Fig. 1 is a schematic diagram of a radio frequency test function switching box according to an embodiment of the present application, and fig. 2 is a schematic structural diagram of a radio frequency switch according to an embodiment of the present application.
As shown in fig. 1 and 2, the present embodiment provides a radio frequency test function switching box 100 connected with a meter 300 and used for switching a corresponding performance enhancement box 200 into a signal path, the meter 300 is used for measuring performance indexes of a tested piece 400, the performance enhancement box 200 is used for increasing measurement capability of the meter 300, and the radio frequency test function switching box 100 includes:
The input selection switch 10 comprises a common terminal 11 and a plurality of to-be-switched terminals 12, the common terminal 11 of the input selection switch 10 is used for being electrically connected with the instrument 300, the to-be-switched terminal 12 of the input selection switch 10 is used for being electrically connected with the first terminal of the performance enhancement box 200, and the input selection switch 10 is controlled to be switched to the corresponding to-be-switched terminal 12 so that the first terminal of the corresponding performance enhancement box 200 is connected into a signal path; and
The output selection switch 20 comprises a common terminal 11 and a plurality of to-be-switched terminals 12, the to-be-switched terminal 12 of the output selection switch 20 is electrically connected with the second terminal of the performance enhancement box 200, the common terminal 11 of the output selection switch 20 is used for being electrically connected with the tested piece 400, and the output selection switch 20 is controlled to be switched to the corresponding to-be-switched terminal 12 so that the second terminal of the corresponding performance enhancement box 200 is connected into the signal path.
The meter 300 may be a VNA (Vector Network Analyzer ), a spectrometer, an oscilloscope, a signal source, or a noise source. The meter 300 can transmit and/or receive signals, and the input end and the output end of the tested piece 400 need to be connected with the meter 300 capable of transmitting signals and the meter 300 capable of receiving signals respectively to form a signal loop.
Sometimes under certain test requirements, the meter 300 has insufficient measurement capability. For example, the Port1 Port of the VNA transmits a signal with a power of 0dBm, while the device under test requires a signal with a power of 20dBm, and at this time, the power of the VNAPort Port output signal needs to be increased, and the performance enhancement box 200 with increased power needs to be accessed. For another example, when testing the power of the input and output ports of the tested piece 400, the loss generated by the devices in the rf link may affect the accuracy of the test result, and thus the performance enhancement box 200 for high-precision power test is required. And other cases not mentioned, are not described in detail herein.
And thus, a switch to the performance enhancement box 200 of the corresponding function is required to increase the measurement capability of the meter 300.
Fig. 3 is a schematic circuit diagram of a radio frequency switch according to an embodiment of the application.
Referring to fig. 3, the input selection switch 10 and the output selection switch 20 are radio frequency switches, and the corresponding contacts are controlled to be connected with the corresponding ends 12 to be switched, so that the corresponding circuits are communicated, and switching of different signal paths is achieved.
According to the radio frequency test function switching box 100 provided by the embodiment, the input selection switch 10 is arranged, the public end 11 of the input selection switch 10 is electrically connected with the instrument 300, the to-be-switched end 12 of the input selection switch 10 is electrically connected with the first end of the performance enhancement box 200, the to-be-switched end 12 of the output selection switch 20 is electrically connected with the second end of the performance enhancement box 200, the public end 11 of the output selection switch 20 is electrically connected with the tested piece 400, and the performance enhancement box 200 is switched to the corresponding to-be-switched end 12 by controlling the input selection switch 10 and the output selection switch 20, so that the measurement capability of the instrument 300 is increased, the test capability of a test system is increased, and the corresponding performance enhancement box 200 can be connected as required.
In the present embodiment, as shown in fig. 1, the to-be-switched terminal 12 of the input selection switch 10 is electrically connected to the to-be-switched terminal 12 of the output selection switch 20. When the performance enhancement box 200 is not needed to be connected, the input selection switch 10 and the output selection switch 20 are controlled to be switched to the corresponding to-be-switched ends 12, and the signals can meet the corresponding test requirements by using the instrument 300 without passing through the performance enhancement box 200. The radio frequency test function switching box 100 provided in this embodiment can select whether to access the performance enhancement box 200, has various functions, and can meet test requirements of various degrees.
In this embodiment, as shown in fig. 1, the radio frequency test function switching box 100 further includes a meter selection switch 30, where the common terminal 11 of the meter selection switch 30 is electrically connected to the common terminal 11 of the input selection switch 10, and the to-be-switched terminal 12 of the meter selection switch 30 is electrically connected to the meter 300. The meter selection switch 30 is controlled to switch to the corresponding end 12 to be switched, so that the corresponding meter 300 is connected to the signal path to be used as the corresponding test item. The radio frequency test function switching box 100 provided in this embodiment further includes an instrument selection switch 300, and is connected to a plurality of instruments 300, and can switch to the corresponding to-be-switched end 12 to access the corresponding instrument 300 through control, so as to switch test items, test multiple performance indexes of the tested piece 400, and has high automation degree, more intelligence and high test efficiency.
In this embodiment, the meter selection switch 30 is a radio frequency switch.
Fig. 4 is a schematic structural diagram of a switching box for a radio frequency test function according to an embodiment of the present application.
In this embodiment, as shown in fig. 4, the radio frequency test function switching box 100 further includes:
A case 40;
The first end of the instrument interface 50 is used for being electrically connected with the instrument 300, and the second end of the instrument interface 50 is electrically connected with the end 12 to be switched of the instrument selection switch 30; and
The first end of the to-be-connected port 60 is electrically connected to the common end 11 of the output selector switch 20, and the second end of the to-be-connected port 60 is electrically connected to the workpiece 400.
In this embodiment, the meter interface 50 and/or the port to be connected 60 are SMA (SubMiniature ersion A) connectors. Those skilled in the art will readily recognize that in other embodiments, it is within the scope of the present application that the meter interface 50 and/or the port 60 to be connected are N (Type N connector) -type connectors, BNC (Bayonet Neill-Concelman) connectors, or SMB (SubMiniature Version B) RF connectors. The radio frequency test function switching box 100 provided in this embodiment has a simple connection structure with other modules/units/components (such as meters, tested pieces, etc.), and is convenient to assemble and disassemble and use.
Fig. 5 is a schematic circuit diagram of a switching box for a radio frequency test function according to an embodiment of the present application.
In the present embodiment, as shown in fig. 5, the number of the input selection switch 10, the output selection switch 20, and the meter selection switch 30 is plural. Specifically, in the present embodiment, the number of the input selector switch 10, the output selector switch 20 and the meter selector switch 30 is three, and the number of signal paths is large, so that a plurality of signal loops are formed, and a plurality of test pieces 400 can be tested at the same time, so that the test efficiency is high. And more meters 300, performance enhancing tanks 200, and more ports of the test pieces 300 can be connected.
In this embodiment, as shown in fig. 1, the radio frequency test function switching box 100 further includes a tested piece port selection switch 70, where the common end 11 of the tested piece port selection switch 70 is electrically connected to the common end 11 of the output selection switch 20, and the to-be-switched end 12 of the tested piece port selection switch 70 is electrically connected to the port of the tested piece 400.
The number of ports of the tested piece 400 is plural, for example, if the tested piece 400 has three output ports, after testing one output port, the next output port needs to be tested. The port selection switch 70 of the tested piece is controlled to be switched to the corresponding to-be-switched end 12, so that the output port connected with the port selection switch is connected to the signal path, the signal path is tested, and the cycle is repeated until the port to be tested is tested. The radio frequency test function switching box 100 provided in this embodiment can perform multiple tests on the multi-port tested piece 400, and has the advantages of high automation degree, more intelligent, convenient use and high test efficiency.
The radio frequency test function switching box provided by the embodiment can test the performances of S parameters, power or intermodulation and the like of a plurality of tested pieces 400 at the same time. For example, the port selection switch 70 of the tested piece can be connected with a plurality of tested pieces 400 at the same time, and the same performance test of different tested pieces 400 can be completed by switching the port selection switch 70 of the tested piece. The instrument selection switch 30 can be simultaneously connected to instruments with different functions, and the instrument selection switch 30 is switched to complete the testing of different performance indexes of the same tested piece 400.
The combination meter selector switch 30 and the test piece port selector switch 70 can test different performances of a plurality of test pieces 400.
The input selector switch 10 and the output selector switch 20 are used for determining whether to access the performance enhancement box 200 according to the test requirement of the tested piece 400 by comprehensively considering the test capability of the instrument.
In this embodiment, the port selection switch 70 is a radio frequency switch.
In this embodiment, as shown in fig. 5, the radio frequency test function switching box 100 further includes a port combination switch 80, where the common end 11 of the port combination switch 80 is electrically connected to the port of the tested piece 400, and the to-be-switched end 12 of the port combination switch 80 is electrically connected to the to-be-switched end 12 of the tested piece port selection switch 70, so that each port of the tested piece 400 can be connected to each meter 300, so that a test item corresponding to the meter 300 can be made for each port, and there are more test items, and more test requirements are satisfied.
In this embodiment, the port combination switch 80 is a radio frequency switch.
Fig. 6 is a schematic circuit diagram of a switching box for a radio frequency test function according to an embodiment of the present application.
In this embodiment, as shown in fig. 6, the radio frequency test function switching box 100 further includes a signal combining unit 90, where the signal combining unit 90 includes a first signal selection switch 91, a second signal selection switch 92, and a first combiner 93, the common terminal 11 of the first signal selection switch 91 is electrically connected to the first signal generating instrument 500, the first to-be-switched terminal 13 of the first signal selection switch 91 is electrically connected to the first to-be-switched terminal 13 of the instrument selection switch 30, the second to-be-switched terminal 14 of the first signal selection switch 91 is electrically connected to the first input terminal of the first combiner 93, the common terminal 11 of the second signal selection switch 92 is electrically connected to the second signal generating instrument 300, the first to-be-switched terminal 13 of the second signal selection switch 92 is electrically connected to the second input terminal of the first combiner 93, and the output terminal of the first combiner 93 is electrically connected to the second to-be-switched terminal 14 of the instrument selection switch 30.
The working process of the radio frequency test function switching box 100 provided in this embodiment is as follows:
The first signal selection switch 91 is controlled to be switched to the second terminal 14 to be switched, the second signal selection switch 92 is controlled to be switched to the first terminal 13 to be switched, and the signals of the meter 300 electrically connected with the common terminal 11 of the first signal selection switch 91 and the meter 300 electrically connected with the common terminal 11 of the second signal selection switch 92 are combined into one signal to test intermodulation indexes of the tested piece 400. Because of intermodulation test, two signals with equal power need to be input to the input port of the test piece 400 at the same time, and thus two signals output from two sources need to be combined into one path. And the signal combining is finished by the simplest structure, and the combining is finished by different-frequency signals with larger frequency difference. Compared with an electric bridge, the combiner has stronger combining function and simpler structure.
In this embodiment, the signal combining unit 90 further includes a second combiner 94, the third to-be-switched end 15 of the first signal selecting switch 91 is electrically connected to the first input end of the second combiner 94, the second to-be-switched end 14 of the second signal selecting switch 92 is electrically connected to the second input end of the second combiner 94, and the output end of the second combiner 94 is electrically connected to the third to-be-switched end 15 of the meter selecting switch 30.
The first signal selection switch 91 is controlled to be switched to the third terminal 15 to be switched, the second signal selection switch 92 is controlled to be switched to the second terminal 14 to be switched, the signals of the meter 300 electrically connected with the common terminal 11 of the first signal selection switch 91 and the meter 300 electrically connected with the common terminal 11 of the second signal selection switch 92 are combined into one signal through the second combiner 94, and the working bandwidths of the second combiner 94 and the first combiner 93 are different. The radio frequency test function switching box 100 provided in this embodiment forms a larger working bandwidth by setting the first combiner 93 and the second combiner 94, and has good intermodulation test performance.
Example 2
In this embodiment, as shown in fig. 1, the number of the input selector switch 10, the output selector switch 20 and the meter selector switch 30 is two, so as to form two paths of signals, one for transmitting signals and one for receiving signals, so as to form a signal loop.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A radio frequency test function switching box for connection with a meter for measuring a performance indicator of a test piece and for switching a corresponding performance enhancing box into a signal path, the performance enhancing box for increasing the meter measurement capability, comprising:
The input selection switch comprises a public end and a plurality of to-be-switched ends, the public end of the input selection switch is used for being electrically connected with the instrument, the to-be-switched end of the input selection switch is used for being electrically connected with the first end of the performance enhancement box, and the input selection switch is controlled to be switched to the corresponding to-be-switched end so that the first end of the corresponding performance enhancement box is connected into a signal path; and
The output selection switch comprises a public end and a plurality of to-be-switched ends, the to-be-switched ends of the output selection switch are electrically connected with the second end of the performance enhancement box, the public end of the output selection switch is used for being electrically connected with the tested piece, and the output selection switch is controlled to be switched to the corresponding to-be-switched end so that the second end of the corresponding performance enhancement box is connected into the signal path.
2. The radio frequency test function switching box according to claim 1, wherein the to-be-switched end of the input selection switch is electrically connected to the to-be-switched end of the output selection switch.
3. The radio frequency test function switching box according to claim 1, further comprising an instrument selection switch, wherein a common terminal of the instrument selection switch is electrically connected to a common terminal of the input selection switch, and wherein a to-be-switched terminal of the instrument selection switch is electrically connected to the instrument.
4. A radio frequency test function switching box as claimed in claim 3, further comprising:
A case;
The first end of the instrument interface is used for being electrically connected with the instrument, and the second end of the instrument interface is electrically connected with the end to be switched of the instrument selection switch; and
And the first end of the to-be-connected port is electrically connected with the public end of the output selection switch, and the second end of the to-be-connected port is used for being electrically connected with the tested piece.
5. A radio frequency test function switching box according to claim 3, wherein the number of said input selector switch, said output selector switch and said meter selector switch is plural.
6. A radio frequency test function switching box according to claim 3, further comprising a test piece port selection switch, wherein a common terminal of the test piece port selection switch is electrically connected to a common terminal of the output selection switch, and a to-be-switched terminal of the test piece port selection switch is electrically connected to a port of the test piece.
7. The radio frequency test function switching box according to claim 6, further comprising a port combination switch, wherein a common end of the port combination switch is electrically connected to a port of the tested piece, and a to-be-switched end of the port combination switch is electrically connected to a to-be-switched end of the tested piece port selection switch.
8. The radio frequency test function switching box according to claim 3, further comprising a signal combining unit, wherein the signal combining unit comprises a first signal selection switch, a second signal selection switch and a first combiner, a common end of the first signal selection switch is used for being electrically connected with a first signal generation instrument, a first to-be-switched end of the first signal selection switch is electrically connected with a first to-be-switched end of the instrument selection switch, a second to-be-switched end of the first signal selection switch is electrically connected with a first input end of the first combiner, a common end of the second signal selection switch is used for being electrically connected with a second signal generation instrument, a first to-be-switched end of the second signal selection switch is electrically connected with a second input end of the first combiner, and an output end of the first combiner is electrically connected with a second to-be-switched end of the instrument selection switch.
9. The radio frequency test function switching box according to claim 8, wherein the signal combining unit further comprises a second combiner, the third to-be-switched end of the first signal selecting switch is electrically connected with the first input end of the second combiner, the second to-be-switched end of the second signal selecting switch is electrically connected with the second input end of the second combiner, and the output end of the second combiner is electrically connected with the third to-be-switched end of the meter selecting switch.
10. The radio frequency test function switching box according to claim 4, wherein the input selector switch, the output selector switch and the meter selector switch are radio frequency switches, and the meter interface and/or the to-be-connected port are SMA connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322972007.7U CN221575372U (en) | 2023-11-03 | 2023-11-03 | Radio frequency test function switching box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322972007.7U CN221575372U (en) | 2023-11-03 | 2023-11-03 | Radio frequency test function switching box |
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| CN221575372U true CN221575372U (en) | 2024-08-20 |
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| CN202322972007.7U Active CN221575372U (en) | 2023-11-03 | 2023-11-03 | Radio frequency test function switching box |
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| CN (1) | CN221575372U (en) |
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