Oscilloscope probe-to-coaxial SMA joint structure

Abstract

The utility model provides an oscilloscope probe-to-coaxial SMA joint structure, which comprises a sleeve conductor and an SMA joint, and is characterized in that the sleeve conductor comprises an outer conductor, an inner conductor and a dielectric medium, and the dielectric medium is filled between the inner conductor and the outer conductor; the SMA connector is fixed to the end of the sleeve conductor, and the end, close to the sleeve conductor, of the SMA connector is inserted into the inner conductor. The inner conductor is arranged in the outer conductor, the interval is arranged between the inner conductor and the outer conductor, and the dielectric is filled in the interval, so that an inner conductor and an outer conductor are arranged on the sleeve conductor, and the inner conductor and the outer conductor are independent from each other due to the fact that the dielectric is arranged between the outer conductor and the inner conductor. Due to the fact that the outer conductor, the inner conductor and the dielectric medium between the outer conductor and the inner conductor are coaxial to form the double-conductor transmission line, the outer conductor is grounded, and an electromagnetic field is limited between the outer conductor and the inner conductor, the sleeve conductor basically has no radiation loss, and the oscilloscope probe is hardly interfered by external signals.

Description

TECHNICAL FIELD

[0001] The utility model relates to oscilloscope technical field, concretely relates to a kind of oscilloscope probe turns coaxial SMA connector structure. BACKGROUND

[0002] Oscilloscope is a kind of electronic test instrument allowing to observe the time-varying electrical signal. During typical operation, oscilloscope receives input signal by oscilloscope probe connected with device under test (DUT), and the signal received is displayed on electronic display.

[0003] At present, most of the oscilloscope terminals on the market are probes, which leads to the problem of easy interference when oscilloscope does electronic loop analysis through probe. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides an oscilloscope probe turns coaxial SMA connector structure to solve the problem of easy interference when oscilloscope does electronic loop analysis through probe.

[0005] In the first aspect, the utility model provides an oscilloscope probe turns coaxial SMA connector structure, comprising:

[0006] Sleeve conductor, including outer conductor, inner conductor and dielectric, the inner conductor is arranged inside the outer conductor, and the inner conductor and the outer conductor are provided with interval, and the dielectric is filled in the interval;

[0007] SMA connector, fixed with the sleeve conductor end, the SMA connector is inserted into the inner conductor inside close to the end of the sleeve conductor, and the SMA connector is adapted to be electrically connected with the inner conductor.

[0008] In an optional embodiment, the inner conductor is provided with a stepped structure, and the inner diameter of the inner conductor close to the SMA connector is greater than the inner diameter of another section of the inner conductor.

[0009] In an optional embodiment, the inner conductor is provided with a threaded hole inside the end away from the SMA connector.

[0010] In an optional embodiment, the outer conductor and the inner conductor are both cylindrical.

[0011] In an optional embodiment, the SMA connector is provided with an insertion hole on the end face of the inner conductor inside.

[0012] In an optional embodiment, it further comprises a fixing assembly, and the SMA connector and the sleeve conductor are fixed by the fixing assembly.

[0013] In an alternative embodiment, the fixing assembly comprises a first insulating fixing plate connected with the outer conductor and a second insulating fixing plate connected with the SMA joint.

[0014] The first insulating fixing plate and the second insulating fixing plate are adapted to be fixed.

[0015] In an alternative embodiment, threaded through holes are provided on the first insulating fixing plate and the second insulating fixing plate.

[0016] In an alternative embodiment, the first insulating fixing plate is sleeved on the outer conductor, the second insulating fixing plate is sleeved on the SMA joint, and the threaded through holes on the first insulating fixing plate and the second insulating fixing plate are aligned after the SMA joint is inserted into the inner conductor.

[0017] The oscilloscope probe-to-coaxial SMA joint structure has the following advantages:

[0018] The oscilloscope probe-to-coaxial SMA joint structure comprises a sleeve conductor and an SMA joint.

[0019] The oscilloscope probe-to-coaxial SMA joint structure has the following advantages: BRIEF DESCRIPTION OF DRAWINGS

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic structural view of the oscilloscope probe to coaxial SMA connector structure provided in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the oscilloscope probe to coaxial SMA connector structure provided in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1-Sleeve conductor; 11-Outer conductor; 12-Inner conductor; 13-Dielectric;

[0025] 2-SMA connector;

[0026] 3-First insulating fixing plate;

[0027] 4-Second insulating fixing plate. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] Example

[0031] This embodiment provides an oscilloscope probe to coaxial SMA connector structure, such as Figure 1 and Figure 2 As shown, the device includes a sleeve conductor 1 and an SMA connector 2. The sleeve conductor 1 includes an outer conductor 11, an inner conductor 12, and a dielectric 13. The inner conductor 12 is disposed inside the outer conductor 11, and there is a gap between the inner conductor 12 and the outer conductor 11. The dielectric 13 is filled in the gap. The SMA connector 2 is fixed to the end of the sleeve conductor 1. The end of the SMA connector 2 near the sleeve conductor 1 is inserted into the inner conductor 12, and the SMA connector 2 is adapted to be electrically connected to the inner conductor 12.

[0032] Currently, most oscilloscope terminals on the market are probes. When oscilloscopes perform electronic loop analysis using probes, the probes are directly attached to the measurement point, and the outside is grounded. This can easily lead to significant interference when oscilloscopes perform electronic loop analysis using probes.

[0033] In this embodiment, a sleeve conductor 1 and an SMA connector 2 are provided. The sleeve conductor 1 includes an outer conductor 11, an inner conductor 12, and a dielectric 13. Structurally, the inner conductor 12 is located inside the outer conductor 11, and there is a gap between the inner conductor 12 and the outer conductor 11. The dielectric 13 fills the gap, thus creating two layers of conductors on the sleeve conductor 1. Since the dielectric 13, which is an insulating material, is placed between the outer conductor 11 and the inner conductor 12, the two layers of conductors are independent of each other. The SMA connector 2 is fixed to the end of the sleeve conductor 1, and the end of the SMA connector 2 closest to the sleeve conductor 1 is inserted into the inner conductor 12. In use, the oscilloscope probe is directly inserted into the sleeve conductor 1 until it is inserted into the SMA connector 2. At this time, the oscilloscope probe is electrically connected to the inner conductor 12 and the SMA connector 2. Since the coaxial outer conductor 11, inner conductor 12 and dielectric 13 between them form a two-conductor transmission line, and the outer conductor 11 is grounded, the electromagnetic field is confined between the outer conductor 11 and the inner conductor 12. Therefore, the sleeve conductor 1 has almost no radiation loss, and the oscilloscope probe is almost unaffected by external signals.

[0034] In this embodiment, as Figure 2 As shown, the inner conductor 12 has a stepped structure, and the inner diameter of the section of the inner conductor 12 near the SMA connector 2 is larger than the inner diameter of the other section of the inner conductor 12.

[0035] When in use, the oscilloscope probe needs to be directly inserted into the sleeve conductor 1 until the oscilloscope probe is inserted into the SMA connector 2. The inner conductor 12 is provided with a stepped structure, and the inner diameter of the section of the inner conductor 12 near the SMA connector 2 is larger than the inner diameter of the other section of the inner conductor 12, so that the inner conductor 12 can be adapted to the shape of the oscilloscope probe.

[0036] Furthermore, the inner conductor 12 has internal threads at the end furthest from the SMA connector 2. When the oscilloscope probe is directly inserted into the sleeve conductor 1, the threads at the end of the inner conductor 12 furthest from the SMA connector 2 engage with the threads on the periphery of the oscilloscope probe for fixation. In this embodiment, as shown... Figure 1 As shown, both the outer conductor 11 and the inner conductor 12 are cylindrical.

[0037] In this embodiment, as Figure 2 As shown, the SMA connector 2 has an insertion hole on one end face inside the inner conductor 12. When the oscilloscope probe is directly inserted into the sleeve conductor 1, the end of the oscilloscope probe is inserted into the insertion hole on one end face of the SMA connector 2 inside the inner conductor 12, thus completing the connection between the oscilloscope probe and the SMA connector 2. The SMA connector 2 adopts an existing structure.

[0038] In this embodiment, the oscilloscope probe to coaxial SMA connector 2 structure also includes a fixing component, and the SMA connector 2 and the sleeve conductor 1 are fixed by the fixing component.

[0039] Specifically, such as Figure 1 As shown, the fixing assembly includes a first insulating fixing plate 3 and a second insulating fixing plate 4. The first insulating fixing plate 3 is connected to the outer conductor 11, and the second insulating fixing plate 4 is connected to the SMA connector 2. The first insulating fixing plate 3 and the second insulating fixing plate 4 are suitable for fixing.

[0040] By setting a first insulating fixing plate 3 and a second insulating fixing plate 4, with the first insulating fixing plate 3 connected to the outer conductor 11 and the second insulating fixing plate 4 connected to the SMA connector 2, when it is necessary to fix the sleeve conductor 1 and the SMA connector 2, firstly insert the end of the SMA connector 2 near the sleeve conductor 1 into the inner conductor 12, and then fix the first insulating fixing plate 3 and the second insulating fixing plate 4 to complete the fixing of the sleeve conductor 1 and the SMA connector 2.

[0041] In this embodiment, both the first insulating fixing plate 3 and the second insulating fixing plate 4 are provided with threaded through holes.

[0042] After inserting the end of the SMA connector 2 near the sleeve conductor 1 into the inner conductor 12, align the threaded through holes on the first insulating fixing plate 3 and the second insulating fixing plate 4, and then fix bolts and other fasteners inside the threaded through holes to fix the first insulating fixing plate 3 and the second insulating fixing plate 4.

[0043] In this embodiment, as Figure 2As shown, the first insulating fixing plate 3 is sleeved around the outer conductor 11, and the second insulating fixing plate 4 is sleeved around the SMA connector 2. The first insulating fixing plate 3 and the second insulating fixing plate 4 are configured such that after the SMA connector 2 is inserted into the inner conductor 12, the threaded through holes on the first insulating fixing plate 3 and the second insulating fixing plate 4 are aligned, and then fasteners such as bolts are fixed inside the threaded through holes.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An oscilloscope probe to coaxial SMA connector structure, characterized in that, include: The sleeve conductor (1) includes an outer conductor (11), an inner conductor (12), and a dielectric (13). The inner conductor (12) is disposed inside the outer conductor (11), and there is a gap between the inner conductor (12) and the outer conductor (11). The dielectric (13) fills the gap. The SMA connector (2) is fixed to the end of the sleeve conductor (1), the end of the SMA connector (2) near the sleeve conductor (1) is inserted into the inner conductor (12), and the SMA connector (2) is adapted to be electrically connected to the inner conductor (12).

2. The oscilloscope probe to coaxial SMA connector structure according to claim 1, characterized in that, The inner conductor (12) has a stepped structure, and the inner diameter of the inner conductor (12) near the SMA connector (2) is larger than the inner diameter of the other section of the inner conductor (12).

3. The oscilloscope probe to coaxial SMA connector structure according to claim 2, characterized in that, The inner conductor (12) has internal threads at the end away from the SMA connector (2).

4. The oscilloscope probe to coaxial SMA connector structure according to any one of claims 1-3, characterized in that, Both the outer conductor (11) and the inner conductor (12) are cylindrical.

5. The oscilloscope probe to coaxial SMA connector structure according to any one of claims 1-3, characterized in that, The SMA connector (2) has an insertion hole on one end face inside the inner conductor (12).

6. The oscilloscope probe to coaxial SMA connector structure according to claim 1, characterized in that, It also includes a fixing component, which fixes the SMA connector (2) and the sleeve conductor (1) together.

7. The oscilloscope probe to coaxial SMA connector structure according to claim 6, characterized in that, The fixing assembly includes a first insulating fixing plate (3) and a second insulating fixing plate (4). The first insulating fixing plate (3) is connected to the outer conductor (11), and the second insulating fixing plate (4) is connected to the SMA connector (2). The first insulating fixing plate (3) and the second insulating fixing plate (4) are suitable for fixing.

8. The oscilloscope probe to coaxial SMA connector structure according to claim 7, characterized in that, Both the first insulating fixing plate (3) and the second insulating fixing plate (4) are provided with threaded through holes.

9. The oscilloscope probe to coaxial SMA connector structure according to claim 8, characterized in that, The first insulating fixing plate (3) is sleeved on the periphery of the outer conductor (11), and the second insulating fixing plate (4) is sleeved on the periphery of the SMA connector (2). The first insulating fixing plate (3) and the second insulating fixing plate (4) are configured such that after the inner conductor (12) is inserted into the SMA connector (2), the threaded through holes on the first insulating fixing plate (3) and the second insulating fixing plate (4) are aligned.

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