CN218481633U - On-line performance monitoring device for passive intermodulation test equipment - Google Patents
On-line performance monitoring device for passive intermodulation test equipment Download PDFInfo
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- CN218481633U CN218481633U CN202222402686.XU CN202222402686U CN218481633U CN 218481633 U CN218481633 U CN 218481633U CN 202222402686 U CN202222402686 U CN 202222402686U CN 218481633 U CN218481633 U CN 218481633U
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Abstract
The utility model discloses an online performance monitoring device for passive intermodulation test equipment, including input port, output port and control port, input port connection input switch's public end, input switch's first gear port connection output switch's first gear port, input switch's second gear port is connected with output switch's second gear port after radio frequency circuit is connected to the second gear port of input switch, output switch's public end connection output port, control port connection control circuit; the input port is externally connected with a radio frequency output port of the passive intermodulation test equipment, the output port is externally connected with a tested piece, and the control port is externally connected with an upper computer. The device realizes the on-line monitoring of the performance of the passive intermodulation test equipment, is convenient and quick, is beneficial to ensuring the accuracy and effectiveness of the passive intermodulation measurement result of the tested piece, and simultaneously improves the utilization rate of the passive intermodulation test equipment; independent of the passive intermodulation test equipment and is not controlled by the passive intermodulation test equipment.
Description
Technical Field
The utility model relates to a radio frequency passive device tests technical field, concretely relates to online performance monitoring device to passive intermodulation test equipment.
Background
With the increase and the technical development of mobile communication systems, the problem of passive intermodulation interference is concerned more and more, compared with active intermodulation, the generation mechanism of the passive intermodulation is very complex and is not completely clear up to now, in this case, the passive intermodulation measurement is very important, and the measured data can be used for measuring the product performance and providing a basis for researching the passive intermodulation mechanism.
Currently, the measurement theory and method of passive intermodulation are still under development, and the passive intermodulation measurement of the tested piece is usually performed by using passive intermodulation test equipment in the prior art. For the performance of the passive intermodulation test equipment, the most critical index is the accuracy of passive intermodulation level measurement, the index is mainly evaluated or checked by calibrating a passive intermodulation standard component, and the evaluation and check method is complicated and time-consuming, so enterprises generally check the effectiveness of the equipment by regularly calibrating, and the evaluation and check method brings about two problems, namely, the problem of the equipment cannot be found in time, and the measured result of the tested piece is incorrect; and secondly, the behavior of influencing the test result by human intervention in the test process cannot be identified and alarmed. With the increasing importance of passive intermodulation indexes, the requirements are higher and higher, and meanwhile, the price competition of the industry is more and more intense, and the problems in the two aspects can bring serious consequences. Therefore, the market needs an online passive intermodulation test equipment status (performance) detection device, which needs to be independent of the passive intermodulation test equipment and can perform online detection on part of key indexes of the equipment, and this will be beneficial to ensuring the accuracy and validity of the passive intermodulation measurement result of the tested piece.
Disclosure of Invention
The utility model mainly aims at solving the problem that the existing mode of periodically evaluating the performance of the passive intermodulation test equipment may cause the lack of accuracy and validity of the measured result, and providing an online performance monitoring device aiming at the passive intermodulation test equipment, which comprises an input port, an output port and a control port, wherein the input port is connected with the public end of an input switch, the first gear port of the input switch is connected with the first gear port of an output switch, the second gear port of the input switch is connected with a radio frequency circuit and then is connected with the second gear port of the output switch, and the public end of the output switch is connected with the output port; the control port is connected with the control circuit. The device realizes the on-line monitoring of the performance of the passive intermodulation test equipment, is convenient and quick, is beneficial to ensuring the accuracy and effectiveness of the passive intermodulation measurement result of the tested piece, and simultaneously improves the utilization rate of the passive intermodulation test equipment; independent of the passive intermodulation test equipment and is not controlled by the passive intermodulation test equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an online performance monitoring device for passive intermodulation test equipment comprises an input port, an output port and a control port, wherein the input port is connected with a common end of an input switch, a first gear port of the input switch is connected with a first gear port of an output switch, a second gear port of the input switch is connected with a radio frequency circuit and then is connected with a second gear port of the output switch, and the common end of the output switch is connected with the output port; the control port is connected with the control circuit. The utility model provides an online performance monitoring device for passive intermodulation test equipment, which is internally provided with an input switch, an output switch, a radio frequency circuit and a control circuit, wherein the radio frequency circuit comprises an intermodulation standard part signal generating circuit and a radio frequency signal detecting circuit, the device shell is provided with an input port, an output port and a control port, the input port is externally connected with the radio frequency output port of the passive intermodulation test equipment, the output port is externally connected with a tested part, and the control port is externally connected with an upper computer; the input port is connected with the common end of the input switch, the first gear port of the input switch is connected with the first gear port of the output switch, the second gear port of the input switch is connected with one end of the radio frequency circuit, the other end of the radio frequency circuit is connected with the second gear port of the output switch, the common end of the output switch is connected with the output port, and the control circuit is connected with the control port. When the passive intermodulation test device is used, the control circuit controls the input switch and the output switch to be switched, when the input switch is switched to the first gear port and the output switch is switched to the first gear port, the device is in a direct-connection state of radio frequency signals, and in the state, the device is like a radio frequency adapter, and the output of the passive intermodulation test device and passive intermodulation signals generated by a tested piece are not influenced; when an input switch is switched to a second gear port and an output switch is switched to the second gear port, the device is in a performance monitoring working state (a 'standard component' state), a radio frequency signal passes through an intermodulation standard component signal generating circuit or a radio frequency signal detecting circuit to generate a specific signal or detect a passing radio frequency signal characteristic parameter, then data (including a measurement result of a passive intermodulation test device on a signal generated by PIM Source or a detection result of a POWER Detector on the radio frequency signal characteristic parameter) is collected by an upper computer and compared with a set value, the state (performance) of the passive intermodulation test device is judged according to the comparison result, if the state (performance) does not reach the standard, alarm processing is carried out, the real-time online monitoring on the state (performance) of the passive intermodulation test device is realized, the device is convenient and fast, the accuracy and the effectiveness of the passive intermodulation measurement result of a tested piece are ensured, and the utilization rate of the passive intermodulation test device is improved; independent of the passive intermodulation test equipment and is not controlled by the passive intermodulation test equipment.
Preferably, the input port is externally connected with a radio frequency output port of the passive intermodulation test equipment and is used for collecting radio frequency signals output by the passive intermodulation test equipment. The input port can be connected with the passive intermodulation test equipment through the radio frequency cable, and also can be directly connected with the passive intermodulation test equipment without the radio frequency cable, so that the advantages of reducing the first-level connection and improving the reliability and effectiveness are achieved.
Preferably, the output port is externally connected with the tested piece. The output port can be connected with the tested piece through the radio frequency cable and also can be directly connected with the tested piece without the radio frequency cable, so that the advantage of reducing primary connection and improving reliability and effectiveness is achieved.
Preferably, the control port is externally connected with an upper computer. The control port is connected with the upper computer through a control line and is used for realizing data communication between the device and the upper computer. The upper computer sends a control instruction to the control circuit through the control port, and the control circuit controls the working states of the input switch, the output switch and the radio frequency circuit according to the control instruction; meanwhile, the upper computer collects data and compares the collected data with a set value, so that the real-time online monitoring of the state (performance) of the passive intermodulation test equipment is realized. The upper computer function can be integrated in the passive intermodulation test equipment.
Preferably, the radio frequency circuit comprises an intermodulation standard component signal generating circuit and a radio frequency signal detecting circuit. The radio frequency circuit is used for generating a specific signal or testing the passing radio frequency signal characteristic parameter.
Preferably, the input switch is a radio frequency single-pole double-throw low intermodulation switch. The input switch and the output switch are matched for use to control the device to be in a radio frequency signal direct connection state or a performance monitoring working state.
Preferably, the output switch is a radio frequency single-pole double-throw low intermodulation switch. The input switch and the output switch are matched for use to control the device to be in a radio frequency signal direct connection state or a performance monitoring working state.
Therefore, the utility model has the advantages that:
(1) The passive intermodulation test equipment has the advantages that the real-time online monitoring on the performance (state) of the passive intermodulation test equipment is realized, the alarm function is realized, the convenience and the rapidness are realized, the accuracy and the effectiveness of the passive intermodulation measurement result of a tested piece are favorably ensured, and meanwhile, the utilization rate of the passive intermodulation test equipment is improved;
(2) Independent of the passive intermodulation test equipment and is not controlled by the passive intermodulation test equipment.
Drawings
Fig. 1 is a schematic structural diagram of an online performance monitoring apparatus for passive intermodulation test equipment according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the embodiment of the present invention, which is directed to an online performance monitoring device of a passive intermodulation test apparatus, a tested piece, and an upper computer.
1. The device comprises an input switch 2, an output switch 3, a radio frequency circuit 4, a control circuit 5, an intermodulation standard part signal generating circuit 6, a radio frequency signal power detection circuit 7, passive intermodulation test equipment 8, a tested part 9, an upper computer 10, a radio frequency cable 11, a control line 12 and an online performance monitoring device.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows:
an online performance monitoring device for passive intermodulation test equipment, as shown in fig. 1, is provided with an input switch 1, an output switch 2, a radio frequency circuit 3 and a control circuit 4 in an online performance monitoring device 12, wherein the radio frequency circuit 3 comprises an intermodulation standard component signal generating circuit 5 (PIM Source) and a radio frequency signal POWER detecting circuit 6 (POWER Detector); an INPUT port INPUT, an OUTPUT port OUTPUT and a CONTROL port CONTROL are arranged on a shell of the online performance monitoring device 12, the INPUT port INPUT is connected with a common port COM of the INPUT switch 1, a first gear port NC of the INPUT switch 1 is connected with a first gear port NC of the OUTPUT switch 2, a second gear port NO of the INPUT switch 1 is connected with one end of the radio frequency circuit 3, the other end of the radio frequency circuit 3 is connected with a second gear port NO of the OUTPUT switch 2, the common port COM of the OUTPUT switch 2 is connected with the OUTPUT port OUTPUT, and the CONTROL circuit 4 is connected with the CONTROL port CONTROL. As shown in fig. 2, the INPUT port INPUT of the online performance monitoring device 12 is connected to the radio frequency OUTPUT port RF OUT of the passive intermodulation test apparatus 7 through the radio frequency cable 10 or directly, the OUTPUT port OUTPUT is connected to the tested object 8 through the radio frequency cable 10 or directly, and the CONTROL port CONTROL is connected to the upper computer 9 through the CONTROL line 11.
When the device is used, the upper computer 9 sends a CONTROL instruction to the CONTROL circuit 4 through the CONTROL port CONTROL, the CONTROL circuit 4 CONTROLs the working states of the input switch 1, the output switch 2 and the radio frequency circuit 3 according to the CONTROL instruction, when the input switch 1 is switched to the first gear port NC and the output switch 2 is switched to the first gear port NC, the device is in a radio frequency signal direct connection state RF PASS, and in the state, the device is like a radio frequency adapter, and the output of the passive intermodulation test equipment and the passive intermodulation signal generated by a tested piece are not influenced; when the input switch 1 is switched to the second gear port NO and the output switch 2 is switched to the second gear port NO, the device is in a performance monitoring working state (a 'standard component' state), a radio frequency signal generates a specific signal or detects a passing radio frequency signal characteristic parameter through an intermodulation standard component signal generating circuit 5 (PIM Source) or a radio frequency signal POWER detecting circuit 6 (POWER Detector), then data (including a measurement result of the passive intermodulation test device 7 on the signal generated by the PIM Source or a detection result of the POWER Detector on the radio frequency signal characteristic parameter) are collected through an upper computer 9 and compared with a set value, the state (performance) of the passive intermodulation test device 7 is judged according to the comparison result, and if the state (performance) does not reach the standard, an alarm process is carried out, so that the real-time online monitoring and alarm of the state (performance) of the passive intermodulation test device 7 are realized.
The second embodiment:
the specific structure of the device, as shown in fig. 1, comprises.
Port: two RF ports, INPUT port and OUTPUT port, respectively, suggest 7/16 or 4.3/10 type connectors; a CONTROL port CONTROL, which is proposed to be a USB type interface, and which, for simplicity of operation, also comprises a DC power supply port for supplying power to the internal circuit board.
A switch: the two radio frequency single-pole double-throw low intermodulation switches are respectively an input switch 1 and an output switch 2, and when the two switches respectively work in a '1' state, the device works in a radio frequency signal direct connection state RF PASS; when the two switches work in the state of 2 respectively, the device works in a performance monitoring state (a 'standard component' state), and radio frequency signals pass through an intermodulation standard component signal generating circuit 5 (PIM Source) or a radio frequency signal POWER detection circuit 6 (Power Detector).
A radio frequency circuit: the radio frequency circuit 3 is used for generating a specific signal or testing a passing radio frequency signal characteristic parameter, and mainly comprises two parts, namely an intermodulation standard component signal generating circuit 5 (PIM Source) or a radio frequency signal POWER detecting circuit 6 (POWER Detector), wherein the PIM Source is used for generating a specific non-linear signal accessory, receiving a command from a computer upper computer on the passing radio frequency signal, generating a constant passive non-linear signal (for example-100 dBm) higher than a intermodulation value (assumed to be-110 dBm) of a tested component (for example, a tested antenna), namely, the upper computer 9 sends a command to generate a constant level signal (standard value), the PIM Source generates a signal according to the command, the passive testing device 7 measures the signal, the upper computer software collects the measured value and compares the standard value, and once the collection result deviates from an allowable range (for example + -3 dB), the intermodulation alarm processing is performed. The Power Detector is used for detecting characteristic parameters (including Power level, standing-wave ratio and the like) of the passing radio-frequency signals, the upper computer software collects detection values and compares the detection values with set reference values, and once the collection results deviate from the allowable range of the set reference values, alarm processing is carried out. According to a command from the CONTROL port CONTROL, the device can be set to operate in one of the circuits (PIM Source and POWER Detector). According to the actual test requirement, the actual on-line detection device can be only configured with one or two functions.
The control circuit: the control circuit 4 is used for controlling the switch or the radio frequency circuit or returning an alarm parameter, and the circuit can be completed by a simple single chip microcomputer or an embedded system such as an FPGA. In addition the circuit comprises a DC supply circuit for supplying the radio frequency circuit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. The online performance monitoring device for the passive intermodulation test equipment is characterized by comprising an input port, an output port and a control port, wherein the input port is connected with a common end of an input switch, a first gear port of the input switch is connected with a first gear port of an output switch, a second gear port of the input switch is connected with a radio frequency circuit and then is connected with a second gear port of the output switch, and the common end of the output switch is connected with the output port; the control port is connected with the control circuit.
2. The on-line performance monitoring device for the passive intermodulation test equipment as set forth in claim 1, wherein the input port is externally connected to a radio frequency output port of the passive intermodulation test equipment.
3. The on-line performance monitoring device for the passive intermodulation test equipment as set forth in claim 1, wherein the output port is externally connected to the tested piece.
4. The on-line performance monitoring device for the passive intermodulation test equipment of claim 1, wherein the control port is externally connected with an upper computer.
5. The in-line performance monitoring apparatus for passive intermodulation test equipment of claim 1, wherein the radio frequency circuit comprises an intermodulation standard signal generation circuit and a radio frequency signal detection circuit.
6. The on-line performance monitoring device for passive intermodulation test equipment of claim 1, wherein the input switch is a radio frequency single-pole double-throw low intermodulation switch.
7. An in-line performance monitoring device for passive intermodulation test equipment as claimed in claim 1 or 2 or 3 or 4 or 5 or 6, wherein the output switch is a radio frequency single pole double throw low intermodulation switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402686.XU CN218481633U (en) | 2022-09-09 | 2022-09-09 | On-line performance monitoring device for passive intermodulation test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222402686.XU CN218481633U (en) | 2022-09-09 | 2022-09-09 | On-line performance monitoring device for passive intermodulation test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN218481633U true CN218481633U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222402686.XU Active CN218481633U (en) | 2022-09-09 | 2022-09-09 | On-line performance monitoring device for passive intermodulation test equipment |
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| CN (1) | CN218481633U (en) |
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- 2022-09-09 CN CN202222402686.XU patent/CN218481633U/en active Active
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