Low-loss coaxial cable assembly equipment

Abstract

The utility model relates to the field of probe card manufacturing, and discloses a coaxial cable assembly device with small loss, which comprises a semi-steel cable, an SMA connector, an inner core metal wire and a probe, the diameter of the probe is the same as that of the inner core metal wire, the semi-steel cable is electrically connected with the SMA connector, and the probe is electrically connected with the inner core metal wire. And the inner core metal wire arranged at the innermost part of the semi-steel cable can be pulled out and replaced by a probe. According to the utility model, the diameter of the inner core metal wire of the coaxial semi-steel cable processed on the automatic equipment is consistent with that of the probe, the inner core metal wire is pulled out and replaced by the probe, and then the coaxial semi-steel cable is electrically connected with the SMA connector. After the metal wire is replaced by the probe, the distance between the metal wire and the semi-steel cable is kept highly consistent, and the loss and the consistency of the metal wire are obviously improved, so that the device has the characteristics of low loss, high reliability, good repeated operability and the like.

Description

Technical Field

[0001] The utility model relates to the field of probe card manufacturing, in particular to a coaxial cable assembly device with low loss. Background Art

[0002] With the development of integrated circuit technology, the demand for filter chip testing has increased. The RF probe card process came into being. The existing process is mainly used for coaxial probes for filter testing. The copper tube plus insulating tube and probe are connected with the SMA connector. Its structure is as shown in the figure below: 3 insulating tubes are installed on the 1 probe, and then a layer of 2 copper tubes is put on the outside, and the 2 copper tubes are welded to the 4SMA socket, and the 1 probe is welded to the 5SMA signal end. When in use, connect the needle tip of the 1 probe to the PAD of the chip, and then complete the signal transmission with the test machine through the SMA connector.

[0003] The existing process uses a copper tube plus an insulating tube and a probe connected to an SMA connector. Due to process problems, the gap between the probe and the copper tube is large, resulting in inconsistent spacing between the probe and the copper tube, causing unstable signal loss and affecting customer use.

[0004] Therefore, those skilled in the art provide a coaxial cable assembly device with low loss to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a coaxial cable assembly device with low loss. The device achieves consistency between the inner core metal wire of the coaxial semi-steel cable processed on the automatic equipment and the diameter of the probe, then removes the inner core metal wire and replaces it with the probe, and then electrically connects the coaxial semi-steel cable and the SMA connector. Since the coaxial cable is processed on the automatic equipment, the spacing between the metal wire and the semi-steel cable is highly consistent after the metal wire is replaced with the probe, and its loss and consistency are significantly improved, thereby reflecting the characteristics of low loss, high reliability, good repeatability, etc. of the device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A coaxial cable assembly device with low loss, comprising a semi-steel cable, an SMA connector, an inner core metal wire and a probe, wherein the diameter of the probe is the same as that of the inner core metal wire, the semi-steel cable and the SMA connector are electrically connected, and the inner core metal wire disposed at the innermost part of the semi-steel cable can be drawn out and replaced with the probe;

[0008] Through the above technical scheme, by making the inner core metal wire of the coaxial semi-steel cable processed on the automatic equipment consistent with the diameter of the probe, then removing the inner core metal wire and replacing it with the probe, and then electrically connecting the coaxial semi-steel cable and the SMA connector, since the coaxial cable is processed on the automatic equipment, the spacing between the metal wire and the semi-steel cable is highly consistent after being replaced with the probe, and its loss and consistency are significantly improved, thereby reflecting the characteristics of low loss, high reliability, and good repeatability of the device.

[0009] Furthermore, the outer end of the inner core metal wire disposed at the innermost part of the semi-steel cable is provided with an insulating layer, the outer end of the insulating layer is provided with a semiconductor layer, the outer end of the semiconductor layer is provided with a metal shielding layer, and the outer end of the metal shielding layer is provided with a sheath layer;

[0010] Through the above technical scheme, an insulating layer is arranged at the outer end of the inner core metal wire arranged at the innermost part of the semi-steel cable, a semiconductor layer is arranged at the outer end of the insulating layer, a metal shielding layer is arranged at the outer end of the semiconductor layer, and a sheath layer is arranged at the outer end of the metal shielding layer, thereby greatly improving the safety performance of the cable.

[0011] Furthermore, the insulating layer is made of polyethylene material;

[0012] Through the above technical solution, the insulating layer is made of polyethylene material and can be used to isolate the electric field between the inner conductor and the outer structure to prevent current leakage and interference.

[0013] Further, the semiconductor layer is made of semiconductor material;

[0014] Through the above technical solution, the semiconductor layer is made of semiconductor material and can be used to balance the electric field distribution, reduce the voltage gradient, and enhance the uniform distribution of current.

[0015] Further, the metal shielding layer is composed of a copper tape braided shielding layer;

[0016] Through the above technical solution, the metal shielding layer is composed of a copper tape braided shielding layer and can be used to shield external electromagnetic interference and electric fields.

[0017] Furthermore, the sheath layer is made of polyvinyl chloride material;

[0018] Through the above technical solution, the sheath layer is made of polyvinyl chloride material, so as to protect the cable from physical damage, moisture and voltage.

[0019] Furthermore, a connector is fixedly provided at one end of the SMA connector;

[0020] Through the above technical solution, a connector is fixedly provided at one end of the SMA connector, thereby facilitating the installation of the semi-steel cable.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model proposes a coaxial cable assembly device with low loss. The inner core metal wire of the coaxial semi-steel cable processed on the automatic equipment is made consistent with the diameter of the probe, and then the inner core metal wire is removed and replaced with the probe, and then the coaxial semi-steel cable and the SMA connector are electrically connected. Since the coaxial cable is processed on the automatic equipment, the spacing between the metal wire and the semi-steel cable is highly consistent after the metal wire is replaced with the probe, and its loss and consistency are significantly improved, thereby reflecting that the device has the characteristics of low loss, high reliability, good repeatability, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An exploded diagram of a low-loss coaxial cable assembly device proposed by the utility model;

[0024] Figure 2 An axonometric diagram of a semi-steel cable with an inner metal wire for a low-loss coaxial cable assembly device proposed by the utility model;

[0025] Figure 3 This is an axonometric diagram of a low-loss coaxial cable assembly device proposed by the utility model;

[0026] Figure 4 A cross-sectional view of a semi-steel cable of a coaxial cable assembly device with low loss proposed by the utility model;

[0027] Figure 5 The utility model discloses an axonometric diagram of a probe of a coaxial cable assembly device with low loss.

[0028] Legend:

[0029] 1. Semi-steel cable; 2. SMA connector; 3. Connector; 4. Inner core metal wire; 5. Probe; 6. Insulation layer; 7. Semiconductor layer; 8. Metal shielding layer; 9. Sheath layer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5 The utility model provides an embodiment: a coaxial cable assembly device with low loss, comprising a semi-steel cable 1, an SMA connector 2, an inner core metal wire 4 and a probe 5, the diameter of the probe 5 is the same as that of the inner core metal wire 4, the semi-steel cable 1 is electrically connected to the SMA connector 2, the inner core metal wire 4 arranged at the innermost part of the semi-steel cable 1 can be pulled out and replaced with the probe 5, by making the diameter of the inner core metal wire 4 of the coaxial semi-steel cable 1 processed on the automatic equipment consistent with that of the probe 5, then pulling out the inner core metal wire 4 and replacing it with the probe 5, and then electrically connecting the coaxial semi-steel cable 1 and the SMA connector 2, since the coaxial cable is processed on the automatic equipment, the spacing between the metal wire and the semi-steel cable 1 is highly consistent after being replaced by the probe 5, and its loss and consistency are significantly improved, thereby reflecting that the device has the characteristics of low loss, high reliability, good repeatability and the like.

[0032] The outer end of the inner core metal wire 4 arranged at the innermost part of the semi-steel cable 1 is provided with an insulating layer 6, the outer end of the insulating layer 6 is provided with a semiconductor layer 7, the outer end of the semiconductor layer 7 is provided with a metal shielding layer 8, and the outer end of the metal shielding layer 8 is provided with a sheath layer 9. By providing an insulating layer 6 at the outer end of the inner core metal wire 4 arranged at the innermost part of the semi-steel cable 1, providing a semiconductor layer 7 at the outer end of the insulating layer 6, providing a metal shielding layer 8 at the outer end of the semiconductor layer 7, and providing a sheath layer 9 at the outer end of the metal shielding layer 8, the safety performance of the cable can be greatly improved. The insulating layer 6 is made of polyethylene material. The insulating layer 6 is made of polyethylene material and can be used to isolate the inner conductor and the outer structure. Electric field, prevent current leakage and interference, the semiconductor layer 7 is made of semiconductor material, and the semiconductor layer 7 is made of semiconductor material, so it can be used to balance the electric field distribution, reduce the voltage gradient, and enhance the uniform distribution of current. The metal shielding layer 8 is composed of a copper tape woven shielding layer, and the metal shielding layer 8 is composed of a copper tape woven shielding layer, so it can be used to shield external electromagnetic interference and electric field. The sheath layer 9 is made of polyvinyl chloride material, and the sheath layer 9 is made of polyvinyl chloride material to protect the cable from physical damage, moisture-proof, and voltage-resistant. A connector 3 is fixedly provided at one end of the SMA connector 2, and the connector 3 is fixedly provided at one end of the SMA connector 2 to facilitate the installation of the semi-steel cable 1.

[0033] Working principle: by making the diameter of the inner core metal wire 4 of the coaxial semi-steel cable 1 processed on the automatic equipment consistent with that of the probe 5, then removing the inner core metal wire 4 and replacing it with the probe 5, and then electrically connecting the coaxial semi-steel cable 1 and the SMA connector 2. Since the coaxial cable is processed on the automatic equipment, the metal wire is replaced with the probe 5 and the spacing with the semi-steel cable 1 is highly consistent, and its loss and consistency are significantly improved, which reflects that the device has the characteristics of low loss, high reliability, good repeatability, etc.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coaxial cable assembly device with low loss, comprising a semi-steel cable (1), an SMA connector (2), an inner core metal wire (4) and a probe (5), characterized in that: The probe (5) has the same diameter as the inner core metal wire (4), the semi-steel cable (1) is electrically connected to the SMA connector (2), and the inner core metal wire (4) disposed at the innermost portion of the semi-steel cable (1) can be pulled out and replaced with the probe (5).

2. The low-loss coaxial cable assembly device according to claim 1, characterized in that: The outer end of the inner core metal wire (4) arranged at the innermost part of the semi-steel cable (1) is provided with an insulating layer (6), the outer end of the insulating layer (6) is provided with a semiconductor layer (7), the outer end of the semiconductor layer (7) is provided with a metal shielding layer (8), and the outer end of the metal shielding layer (8) is provided with a sheath layer (9).

3. The low-loss coaxial cable assembly device according to claim 2, characterized in that: The insulating layer (6) is made of polyethylene material.

4. The low-loss coaxial cable assembly device according to claim 2, characterized in that: The semiconductor layer (7) is made of semiconductor material.

5. The low-loss coaxial cable assembly device according to claim 2, characterized in that: The metal shielding layer (8) consists of a copper tape braided shielding layer.

6. The low-loss coaxial cable assembly device according to claim 2, characterized in that: The sheath layer (9) is made of polyvinyl chloride material.

7. The low-loss coaxial cable assembly device according to claim 1, characterized in that: A connector (3) is fixedly provided at one end of the SMA connector (2).

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