CN221101019U - Calibrating device for network analyzer - Google Patents
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- CN221101019U CN221101019U CN202322666738.9U CN202322666738U CN221101019U CN 221101019 U CN221101019 U CN 221101019U CN 202322666738 U CN202322666738 U CN 202322666738U CN 221101019 U CN221101019 U CN 221101019U
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Abstract
The utility model provides a calibration device for a network analyzer, comprising: the calibration unit comprises a main control unit, a first switching unit and a second switching unit, wherein the first switching unit is provided with a first public end and a first selection end, the first public end is connected with one of an S1 port and an S2 port of the network analyzer, the first switching unit is controlled by the main control unit, the first selection end is connected with ground, a first matching load and a first open circuit signal, the second switching unit is provided with a second public end and a second selection end, the second public end is connected with the other one of the S1 port and the S2 port, and the second switching unit is controlled by the main control unit, so that the second selection end is connected with ground, a second matching load and a second open circuit signal; the upper computer is in communication connection with the main control unit and provides electric energy for the calibration unit, and the upper computer is also in communication connection with the network analyzer. The utility model can calibrate the network analyzer quickly with low cost.
Description
Technical Field
The utility model relates to the technical field of radio frequency calibration, in particular to a calibration device for a network analyzer.
Background
A comprehensive microwave measuring instrument for network analyzer can scan and measure in wide frequency band to determine network parameters. The network analyzer is a new instrument for measuring network parameters, can directly measure complex scattering parameters of active or passive, reversible or irreversible double-port and single-port networks, and gives out the amplitude and phase frequency characteristics of each scattering parameter in a sweep frequency mode.
The electronic product with wireless function needs to use the network analyzer to calibrate radio frequency loss in the production line, and the calibration of the current dual-port network analyzer has two modes: manual accessory calibration and network analyzer manufacturer self-assembled automatic calibration piece calibration.
Referring to fig. 1, conventional manual fitting calibration requires calibration of radio frequency loss at a production line testing station, and the calibration fitting is used as a three-port (three-port is a short (i.e., ground GND) port, a load (i.e., load, e.g., 50 ohm) port, and an open (i.e., open) port), and in use, the ports are required to be detached from the ports of the network analyzer and the ports of the fitting are installed to achieve calibration, which has two disadvantages: firstly, continuously disassembling and installing, the process is complex and the instrument is worn; second, the operation time is long and the calibration efficiency is low.
The automatic calibration piece calibration can be realized by using an optional configuration automatic calibrator delivered from a meter factory, so that the semi-automatic calibration of the network analyzer is realized, but the automatic calibration piece calibration is expensive and cannot be used in batches, and in addition, the calibrator needs to be preheated for a long time.
Therefore, there is a need for a low cost calibration device that can quickly improve calibration efficiency.
Disclosure of utility model
The utility model provides a calibration device for a network analyzer, which can be used for quickly calibrating the network analyzer at low cost.
In order to achieve the technical effects, the calibration device for the network analyzer provided by the utility model is realized by adopting the following technical scheme:
the application relates to a calibration device for a network analyzer, comprising:
The calibration unit comprises a main control unit, a first switching unit and a second switching unit, wherein the first switching unit is provided with a first public end and a first selection end communicated with the first public end, the first public end is connected with one of an S1 port and an S2 port of the network analyzer, the first switching unit is controlled by the main control unit to enable the first selection end to be connected with the ground, a first matching load and a first open-circuit signal, the second switching unit is provided with a second public end and a second selection end communicated with the second public end, the second public end is connected with the other one of the S1 port and the S2 port, and the second switching unit is controlled by the main control unit to enable the second selection end to be connected with the ground, the second matching load and a second open-circuit signal;
The upper computer is in communication connection with the main control unit and provides electric energy for the calibration unit, and the upper computer is also in communication connection with the network analyzer.
In some embodiments of the present application, the first switching unit has a first enable terminal I, a second enable terminal I and a third enable terminal I respectively connected to the main control unit, wherein the first select terminal is connected to ground when the first enable terminal I is enabled, the first select terminal is connected to the first matching load when the second enable terminal I is enabled, and the first select terminal is connected to a first open circuit signal when the third enable terminal I is enabled;
the second switching unit is provided with a first enabling end II, a second enabling end II and a third enabling end II which are respectively connected with the main control unit, when the first enabling end II is enabled, the second selecting end is connected with ground, when the second enabling end II is enabled, the second selecting end is connected with the second matching load, and when the third enabling end II is enabled, the second selecting end is connected with a second open-circuit signal.
In some embodiments of the present application, the first switching unit has a first enable terminal I and a second enable terminal I respectively connected to the main control unit, the first select terminal is connected to ground when the first enable terminal I is at a low level and the second enable terminal I is at a high level, and the first select terminal is connected to the first matching load when the first enable terminal I and the second enable terminal I are at a high level;
The second switching unit is provided with a first enabling end II and a second enabling end II which are respectively connected with the main control unit, when the first enabling end II and the second enabling end II are both in a low level, the second selecting end is connected with the ground, when the first enabling end II is in a low level and the second enabling end II is in a high level, the second selecting end is connected with the second matching load, and when the first enabling end II and the second enabling end II are both in a high level, the second selecting end is connected with a second open-circuit signal.
In some embodiments of the application, the first and second switching units are single pole, triple throw switches.
In some embodiments of the application, the calibration unit has:
the shell is internally provided with the main control unit, the first switching unit, the second switching unit, the first matching load and the second matching load;
The first common end of the first switching unit is exposed through the first through part of the housing, and the second common end of the second switching unit is exposed through the second through part of the housing.
In some embodiments of the present application, the calibration device for a network analyzer further includes:
A first electrical connection line for connecting the first common port and one of an S1 port and an S2 port of the network analyzer;
And a second electrical connection line for connecting the second common terminal and the other of the S1 port and the S2 port of the network analyzer.
In some embodiments of the application, the first electrical connection line is pluggable to the first common terminal;
The second electric connection wire is connected with the second public end in a pluggable mode.
In some embodiments of the present application, a USB connection port is disposed on the housing, and is used to connect the USB port of the host computer and the USB connection port through a USB connection line.
Compared with the prior art, the calibration device for the network analyzer has the following advantages and positive effects:
(1) Through setting the calibration unit, the upper computer is connected with the main control unit to control and switch the actions of the first switching unit and the second switching unit, so that the ports of the network analyzer can be respectively connected with the ground, the matching load and the open-circuit signal without disassembly and assembly, the ports can be calibrated rapidly, the simultaneous calibration of the two ports can be realized at the same time, and the calibration efficiency is improved;
(2) The calibration unit has simple structure, easy realization and low input cost;
(3) The upper computer is respectively connected with the calibration unit and the network analyzer, so that automatic calibration is realized, and the complexity of calibration operation is reduced.
Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.
Drawings
FIG. 1 is a diagram of a calibration assembly required for conventional manual assembly calibration in the prior art;
FIG. 2 is a schematic diagram of a calibration device for a network analyzer according to an embodiment of the present utility model;
Fig. 3 is a schematic diagram showing connection between the calibration device for the network analyzer, the host computer and the network analyzer according to an embodiment of the utility model.
Reference numerals:
100. A calibration unit; 110. a main control unit; 111. a USB connection port; 120. a first switching unit; 121. a first common terminal; 122. a first selection terminal; a1/a2/a3, a dynamic selection end; 130. a second switching unit; 131. a second common terminal; 132. a second selection terminal; b1/b2/b3, a dynamic selection end; 140. a first matched load; 150. a second matched load; 160. a housing;
200. A network analyzer;
300. An upper computer;
400. A first electrical connection line;
500. A second electrical connection line;
600. USB connecting wire.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. 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.
It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to improve the calibration efficiency of the network analyzer, referring to fig. 2 and 3, the present application relates to a calibration device for the network analyzer, which comprises a calibration unit 100 and a host computer 300, wherein the calibration unit 100 comprises a main control unit 110, a first switching unit 120 and a second switching unit 130.
The upper computer 300 is connected with the main control unit 110, and the upper computer 300 is connected with the network analyzer 200, and is used for respectively realizing the calibration of the S1 port and the S2 port of the network analyzer by the calibration unit 100 under the control of the upper computer 300.
In fig. 3, the Port1 Port may be one of the S1 Port and the S2 Port, and the Port2 Port may be the other of the S1 Port and the S2 Port.
The main control unit 110 may be implemented by an MCU chip, and the first switching unit 120 and the second switching unit 130 may be selectively connected by the MCU chip.
Referring to fig. 2, the first switching unit 120 has a first common terminal 121 and a first selection terminal 122, and the first common terminal 121 and the first selection terminal 122 communicate.
The first common terminal 121 is connected to one of the S1 port and the S2 port of the network analyzer, and the second common terminal 131 is connected to the other of the S1 port and the S2 port of the network analyzer.
In some embodiments of the present application, port1 Port may be an S1 Port and Port2 Port may be an S2 Port.
Thus, the first common terminal 121 is connected to the S1 port of the network analyzer, and the second common terminal 131 is connected to the S2 port of the network analyzer.
Referring to fig. 2, the first switching unit 120 has at least three movable selection terminals a1/a2/a3, and the first switching unit 120 is controlled by the main control unit 110 such that the first selection terminal 122 is connected to the three movable selection terminals a1/a2/a 3.
The three movable selection ends a1/a2/a3 comprise a movable selection end a1, a movable selection end a2 and a movable selection end a3, wherein the movable selection end a1 is connected with the ground, the movable selection end a2 is connected with the first matching load 140, and the movable selection end a3 is connected with the open signal open.
In some embodiments of the application, the first matching load 140 may be 50 ohms.
In some embodiments of the present application, the first switching unit 120 has a first enable terminal I, a second enable terminal I and a third enable terminal I, and the first enable terminal I, the second enable terminal I and the third enable terminal I are respectively connected to three control output ports (denoted as a first control output port, a second control output port and a third control output port) of the main control unit 110.
The first control output port is connected with the first enabling end I, the second control output port is connected with the second enabling end I, and the third control output port is connected with the third enabling end I.
When the first control output port of the main control unit 110 outputs the first level, the first enabling terminal I receives the first level, and the first switching unit 120 operates to connect the first selecting terminal 122 with the active selecting terminal a1, so as to ground the S1 port of the network analyzer.
When the second control output port of the main control unit 110 outputs the second level, the second enabling end I receives the second level, and the first switching unit 120 acts to connect the first selecting end 122 with the active selecting end a2, so that the S1 port of the network analyzer is connected with the first matching load 140.
When the third control output port of the main control unit 110 outputs the third level, the third enabling terminal I receives the third level, and the first switching unit 120 operates to connect the first selecting terminal 122 with the active selecting terminal a3, so that the S1 port of the network analyzer is connected with the open circuit signal.
The first switching unit 120 may, for example, select a single pole, three throw switch model number SKY13317-373 LF.
The first level, the second level, and the third level as described above are different from each other.
In some embodiments of the present application, the first switching unit 120 has a first enabling terminal I and a second enabling terminal I, and the first enabling terminal I and the second enabling terminal I are respectively connected to two output ports (denoted as a first output port and a second output port) of the main control unit 110.
The first output port is connected with the first enabling end I, and the second output port is connected with the second enabling end I.
When the first output port of the main control unit 110 outputs a low level and the second output port of the main control unit 110 outputs a low level, the first enabling terminal I receives the low level, and the second enabling terminal I receives the low level, at this time, the first switching unit 120 acts to connect the first selecting terminal 122 with the active selecting terminal a1, so that the S1 port of the network analyzer is grounded.
When the first output port of the main control unit 110 outputs a low level and the second output port of the main control unit 110 outputs a high level, the first enabling terminal I receives the low level, the second enabling terminal I receives the high level, and at this time, the first switching unit 120 acts to connect the first selecting terminal 122 with the active selecting terminal a2, so that the S1 port of the network analyzer is connected with the first matching load 140.
When the first output port of the main control unit 110 outputs a high level and the second output port of the main control unit 110 outputs a high level, the first enabling terminal I receives the high level, and the second enabling terminal I receives the high level, at this time, the first switching unit 120 acts to connect the first selecting terminal 122 with the active selecting terminal a3, so that the S1 port of the network analyzer is connected with an open circuit signal.
The first switching unit 120 may select, for example, a single pole, three throw switch of the type MXD 8730L.
In some embodiments of the present application, still referring to fig. 2, the second switching unit 130 has a second common terminal 131 and a second selection terminal 132, and the second common terminal 131 and the second selection terminal 132 communicate.
The second switching unit 130 has at least three movable selection terminals b1/b2/b3, and the second switching unit 130 is controlled by the main control unit 110, so that the second selection terminal 132 is connected with the three movable selection terminals b1/b2/b 3.
The three movable selection ends b1/b2/b3 comprise a movable selection end b1, a movable selection end b2 and a movable selection end b3, wherein the movable selection end b1 is connected with the ground, the movable selection end b2 is connected with the second matching load 150, and the movable selection end b3 is connected with the open signal open.
In some embodiments of the application, the second matched load 150 may be 50 ohms.
In some embodiments of the present application, the second switching unit 130 has a first enabling terminal II, a second enabling terminal II, and a third enabling terminal II, and the first enabling terminal II, the second enabling terminal II, and the third enabling terminal II are respectively connected to three control output ports (denoted as a fourth control output port, a fifth control output port, and a sixth control output port) of the master control unit 110.
The fourth control output port is connected with the first enabling end II, the fifth control output port is connected with the second enabling end II, and the sixth control output port is connected with the third enabling end II.
When the fourth control output port of the main control unit 110 outputs the fourth level, the first enabling terminal II receives the fourth level, and the second switching unit 130 acts to connect the second selecting terminal 132 with the active selecting terminal b1, so as to ground the S2 port of the network analyzer.
When the fifth control output port of the main control unit 110 outputs the fifth level, the second enabling terminal II receives the fifth level, and the second switching unit 130 acts to connect the second selecting terminal 132 with the active selecting terminal b2, so that the S2 port of the network analyzer is connected with the second matching load 150.
When the sixth control output port of the main control unit 110 outputs the sixth level, the third enabling terminal II receives the sixth level, and the second switching unit 130 acts to connect the second selecting terminal 132 with the active selecting terminal b3, so that the S2 port of the network analyzer is connected with the open circuit signal.
The second switching unit 130 may, for example, select a single pole, three throw switch model number SKY13317-373 LF.
The fourth level, the fifth level, and the sixth level as described above are different from each other.
In some embodiments of the present application, the second switching unit 130 has a first enabling terminal II and a second enabling terminal II, and the first enabling terminal II and the second enabling terminal II are respectively connected to two output ports (denoted as a third output port and a fourth output port) of the main control unit 110.
The third output port is connected with the first enabling end II, and the fourth output port is connected with the second enabling end II.
When the third output port of the main control unit 110 outputs a low level and the fourth output port of the main control unit 110 outputs a low level, the first enabling terminal II receives the low level, the second enabling terminal II receives the low level, and at this time, the second switching unit 130 acts to connect the first selecting terminal 132 with the active selecting terminal b1, so as to ground the S2 port of the network analyzer.
When the third output port of the main control unit 110 outputs a low level and the fourth output port of the main control unit 110 outputs a high level, the first enabling terminal II receives the low level, the second enabling terminal II receives the high level, and at this time, the second switching unit 130 acts to connect the first selecting terminal 132 with the active selecting terminal b2, so that the S2 port of the network analyzer is connected with the second matching load 150.
When the third output port of the main control unit 110 outputs a high level and the fourth output port of the main control unit 110 outputs a high level, the first enabling terminal II receives the high level, the second enabling terminal II receives the high level, and at this time, the second switching unit 130 acts to connect the first selecting terminal 132 with the active selecting terminal b3, so that the S2 port of the network analyzer is connected with an open circuit signal.
The second switching unit 130 may select, for example, a single pole, three throw switch of the model MXD 8730L.
When the upper computer 300 is respectively connected with the main control unit 110 of the calibration unit 100 and the network analyzer 200, the upper computer 300 is communicated with the main control unit 110 and the network analyzer 200 to control the first switching unit 120 and the second switching unit 130 to act, and simultaneously, the network analyzer 200 can be correspondingly calibrated and controlled to realize the two-port calibration of the network analyzer 200.
The calibration does not need to detach and install instrument ports, simplifies the calibration process, and can calibrate the two ports of the network analyzer 200 at the same time, thereby improving the calibration efficiency.
And the network analyzer 200 is automatically calibrated at low cost by communication of the upper computer 300.
For convenience in use and connection of the calibration unit 100, referring to fig. 2, the calibration unit 100 includes a housing 160, and the first switching unit 120, the second switching unit 130, the first matching load 140, and the second matching load 150 described above are disposed in the housing 160.
The configuration and connection relation of the first switching unit 120, the second switching unit 130, the first matching load 140, and the second matching load 150 are described as described above.
A first through portion (not shown) and a second through portion (not shown) are opened in the case 160.
The first common terminal 121 of the first switching unit 120 protrudes through the first through portion and is exposed so that the first common terminal 121 is connected to the S1 port of the network analyzer 200.
The second common terminal 131 of the second switching unit 130 protrudes through the second penetration portion and is exposed so that the second common terminal 131 is connected with the S2 port of the network analyzer 200.
In some embodiments of the present application, referring to fig. 3, the calibration device for a network analyzer includes a first electrical connection line 400 and a second electrical connection line 500.
The first electrical connection 400 connects the first common terminal 121 and the S1 port of the network analyzer 200.
The second electrical connection 500 connects the second common terminal 131 and the S2 port of the network analyzer 200.
For convenience of connection, the first electrical connection line 400 may be pluggable to the first common terminal 121, and the second electrical connection line 500 may be pluggable to the second common terminal 131.
When the calibration unit 100 is used, the two ports of the calibration unit 100 and the network analyzer 200 can be quickly connected in a pluggable manner, and when the calibration unit 100 is not used, the first electrical connection wire 400 and the second electrical connection wire 500 are pulled out for storage, for example, placed in the housing 160 for storage.
In order to facilitate connection between the calibration unit 100 and the host computer 300, in some embodiments of the present application, referring to fig. 2, the housing 160 is further provided with a USB connector 111, and the USB connector 111 is connected to the main control unit 110 and exposed, so as to facilitate connection between the USB connector 111 and the USB port of the host computer 300 through a USB connection wire 600, and facilitate communication and power supply connection between the host computer 300 and the main control unit 110.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (8)
1. A calibration device for a network analyzer, comprising:
The calibration unit comprises a main control unit, a first switching unit and a second switching unit, wherein the first switching unit is provided with a first public end and a first selection end communicated with the first public end, the first public end is connected with one of an S1 port and an S2 port of the network analyzer, the first switching unit is controlled by the main control unit to enable the first selection end to be connected with the ground, a first matching load and a first open-circuit signal, the second switching unit is provided with a second public end and a second selection end communicated with the second public end, the second public end is connected with the other one of the S1 port and the S2 port, and the second switching unit is controlled by the main control unit to enable the second selection end to be connected with the ground, the second matching load and a second open-circuit signal;
The upper computer is in communication connection with the main control unit and provides electric energy for the calibration unit, and the upper computer is also in communication connection with the network analyzer.
2. The calibration device for a network analyzer according to claim 1, wherein,
The first switching unit is provided with a first enabling end I, a second enabling end I and a third enabling end I which are respectively connected with the main control unit, the first selecting end is connected with ground when the first enabling end I is enabled, the first selecting end is connected with the first matching load when the second enabling end I is enabled, and the first selecting end is connected with a first open-circuit signal when the third enabling end I is enabled;
the second switching unit is provided with a first enabling end II, a second enabling end II and a third enabling end II which are respectively connected with the main control unit, when the first enabling end II is enabled, the second selecting end is connected with ground, when the second enabling end II is enabled, the second selecting end is connected with the second matching load, and when the third enabling end II is enabled, the second selecting end is connected with a second open-circuit signal.
3. The calibration device for a network analyzer according to claim 1, wherein,
The first switching unit is provided with a first enabling end I and a second enabling end I which are respectively connected with the main control unit, when the first enabling end I and the second enabling end I are both in a low level, the first selecting end is connected with ground, when the first enabling end I is in a low level and the second enabling end I is in a high level, the first selecting end is connected with the first matching load, and when the first enabling end I and the second enabling end I are both in a high level, the first selecting end is connected with a first open-circuit signal;
The second switching unit is provided with a first enabling end II and a second enabling end II which are respectively connected with the main control unit, when the first enabling end II and the second enabling end II are both in a low level, the second selecting end is connected with the ground, when the first enabling end II is in a low level and the second enabling end II is in a high level, the second selecting end is connected with the second matching load, and when the first enabling end II and the second enabling end II are both in a high level, the second selecting end is connected with a second open-circuit signal.
4. A calibration device for a network analyzer according to any one of claims 1 to 3,
The first switching unit and the second switching unit are single-pole three-throw switching switches.
5. The calibration device for a network analyzer according to claim 1, wherein the calibration unit has:
the shell is internally provided with the main control unit, the first switching unit, the second switching unit, the first matching load and the second matching load;
The first common end of the first switching unit is exposed through the first through part of the housing, and the second common end of the second switching unit is exposed through the second through part of the housing.
6. The calibration device for a network analyzer according to claim 5, further comprising:
A first electrical connection line for connecting the first common port and one of an S1 port and an S2 port of the network analyzer;
And a second electrical connection line for connecting the second common terminal and the other of the S1 port and the S2 port of the network analyzer.
7. The calibration device for a network analyzer according to claim 6, wherein,
The first electric connecting wire is connected with the first public end in a pluggable manner;
The second electric connection wire is connected with the second public end in a pluggable mode.
8. The calibration device for a network analyzer according to claim 6 or 7, wherein a USB connection port for connecting the USB port of the host computer and the USB connection port via a USB connection line is provided on the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322666738.9U CN221101019U (en) | 2023-09-27 | 2023-09-27 | Calibrating device for network analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322666738.9U CN221101019U (en) | 2023-09-27 | 2023-09-27 | Calibrating device for network analyzer |
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| Publication Number | Publication Date |
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| CN221101019U true CN221101019U (en) | 2024-06-07 |
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| CN202322666738.9U Active CN221101019U (en) | 2023-09-27 | 2023-09-27 | Calibrating device for network analyzer |
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