IPEX-to-SMA radio frequency coaxial connecting line suitable for 0-6GHZ frequency band

Abstract

The utility model relates to the technical field of coaxial connecting lines, and particularly discloses an IPEX-to-SMA radio frequency coaxial connecting line suitable for a 0-6GHZ frequency band, the IPEX-to-SMA radio frequency coaxial connecting line comprises a coaxial cable, an SMA joint and an IPEX joint, and the coaxial cable comprises a sheath, a conductive layer, an insulating layer and a first inner conductor which are sequentially arranged from outside to inside; the SMA connector comprises an outer conductor, an insulating medium, a second inner conductor and a pressing tail, a first jack is formed in the outer conductor, the insulating medium is inserted into the first jack in a matched mode, and the second inner conductor coaxially penetrates through the insulating medium; the pressing tail is provided with a second jack, one end of the coaxial cable is cooperatively inserted in the second jack, the conductive layer is connected with the pressing tail, the pressing tail is cooperatively inserted in the first jack, and the first inner conductor is connected with the second inner conductor; and the other end of the coaxial cable is connected with the IPEX connector. The IPEX-to-SMA radio frequency coaxial connecting line has the effect of solving the problem that the IPEX-to-SMA radio frequency coaxial connecting line which is used for the 0-6GHZ frequency band and has excellent performance is needed.

Description

Technical Field

[0001] This application relates to the technical field of coaxial connecting lines, and particularly to an IPEX to SMA radio frequency coaxial connecting line applicable to the 0 - 6 GHz frequency band. Background Art

[0002] Radio frequency coaxial connecting lines are key components for radio frequency signal transmission and are widely used in fields such as wireless communication, radar, aerospace, etc. With the continuous development of communication technologies, the performance requirements for radio frequency coaxial connecting lines are also getting higher and higher. Especially in the high - frequency band, such as 0 - 6 GHz, the connecting line is required to have excellent signal transmission stability, low loss, and high reliability.

[0003] IPEX and SMA are two common types of radio frequency connectors, which have different characteristics and application scenarios respectively. The IPEX connector is small in size and light in weight, and is suitable for occasions with high space requirements; while the SMA connector has greater mechanical strength and good electrical performance, and is widely used in various harsh environments. Therefore, a radio frequency coaxial connecting line that can effectively connect the two types of connectors, IPEX and SMA, is of great significance for improving the flexibility and reliability of radio frequency systems.

[0004] However, the existing IPEX to SMA radio frequency coaxial connecting lines on the market often have problems such as unstable signal transmission and large losses in the high - frequency band. This is mainly due to the unreasonable structural design of the connecting line, resulting in large reflections and attenuations during high - frequency signal transmission. Therefore, how to design an IPEX to SMA radio frequency coaxial connecting line applicable to the 0 - 6 GHz frequency band with excellent performance has become an urgent technical problem to be solved. Summary of the Utility Model

[0005] In order to improve the problem of the need for an IPEX to SMA radio frequency coaxial connecting line applicable to the 0 - 6 GHz frequency band with excellent performance, this application provides an IPEX to SMA radio frequency coaxial connecting line applicable to the 0 - 6 GHz frequency band.

[0006] The IPEX to SMA radio frequency coaxial connecting line applicable to the 0 - 6 GHz frequency band provided by this application adopts the following technical solutions:

[0007] An IPEX to SMA radio frequency coaxial cable suitable for the 0-6 GHz frequency band, comprising a coaxial cable, an SMA connector and an IPEX connector. The coaxial cable includes an outer skin, a conductive layer, an insulating layer and a first inner conductor arranged in sequence from outside to inside. The SMA connector includes an outer conductor, an insulating medium, a second inner conductor and a crimp tail. A first jack is provided on the outer conductor, and the insulating medium is fitted and inserted into the first jack. The second inner conductor is coaxially inserted through the insulating medium. A second jack is provided on the crimp tail, and one end of the coaxial cable is fitted and inserted into the second jack. The conductive layer is connected to the crimp tail. The crimp tail is fitted and inserted into the first jack. The first inner conductor is connected to the second inner conductor. The other end of the coaxial cable is connected to the IPEX connector.

[0008] By adopting the above technical solution, during use, one end of the coaxial cable is connected to the IPEX connector, and then the outer skin, conductive layer and insulating layer of the other end of the coaxial cable are sequentially cut off, so that the various layers of the coaxial cable are exposed in a stepped manner. Then the conductive layer is inserted into the second jack of the crimp tail. At this time, the conductive layer is connected to the crimp tail. Then the crimp tail is tightly fitted and inserted into the first jack of the outer conductor. At this time, the first inner conductor is connected to the second inner conductor of the SMA connector. The insulating medium and the insulating layer cooperate to have a good shielding effect, so that the radio frequency coaxial cable of the present application has excellent signal transmission stability, low loss and high reliability in the high-frequency band of 0-6 GHz, and solves the problem of the need for an IPEX to SMA radio frequency coaxial cable for the 0-6 GHz frequency band with excellent performance.

[0009] Optionally, one end of the insulating medium is provided with a limiting block. The diameter of the limiting block is larger than the diameter of the insulating medium. A limiting groove is correspondingly provided on the inner wall of the first jack for the limiting block. The diameter of the end of the crimp tail for inserting into the first jack is the same as the diameter of the limiting groove.

[0010] By adopting the above technical solution, the cooperation setting of the limiting block and the limiting groove enables the insulating medium to be accurately positioned and installed in the outer conductor, and further enables the crimp tail to be accurately positioned during installation, ensuring the reliability of the connection between the first inner conductor and the second inner conductor.

[0011] Optionally, an anti-disengagement ring is coaxially and integrally formed on the peripheral wall of the second inner conductor. The outer diameter of the anti-disengagement ring gradually decreases along the axial direction from near the limiting block to away from the limiting block.

[0012] By adopting the above technical solution, the design of the anti-disengagement ring further enhances the stability of the connecting cable. Its gradually changing outer diameter helps to provide guidance during the assembly process and ensure a tight connection, reducing the second inner conductor from being pulled out of the insulating medium when the coaxial cable is stressed.

[0013] Optionally, a blind hole is provided at the center of the end face of the second inner conductor. The diameter of the blind hole matches the diameter of the first inner conductor, and a chamfer is provided at one end of the first inner conductor for insertion into the blind hole.

[0014] By adopting the above technical solution, the matching design of the blind hole and the first inner conductor ensures the continuity of signal transmission, and the chamfer facilitates the smooth insertion of the first inner conductor into the blind hole, improving the assembly efficiency.

[0015] Optionally, a heat shrinkable tube is sleeved on the outer wall of the connection part between the tail crimping and the coaxial cable.

[0016] By adopting the above technical solution, the setting of the heat shrinkable tube enhances the electrical insulation performance and mechanical strength of the connection wire at this part, improving the overall reliability of the connection wire.

[0017] Optionally, an external thread is provided on the outer wall of the front end of the outer conductor, and the external thread is coaxial with the first jack; a pin is provided at the rear end of the outer conductor for insertion and fixation on the PCB board.

[0018] By adopting the above technical solution, the design of the external thread facilitates the threaded connection with the antenna port, realizing fast and stable connection; the pin facilitates the fixation of the outer conductor on the PCB board, improving the stability of the overall structure.

[0019] Optionally, a spring washer, an internal tooth washer and a nut are sequentially sleeved on the external thread of the outer conductor.

[0020] By adopting the above technical solution, the combined use of the spring washer, the internal tooth washer and the nut further enhances the anti-seismic performance and connection stability of the connection wire, preventing loosening or falling off caused by external forces.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. During use, first connect one end of the coaxial cable to the IPEX connector, then sequentially cut off the outer skin, conductive layer and insulating layer at the other end of the coaxial cable in a stepped manner. The conductive layer is inserted into the second jack of the tail crimping to form a connection with the tail crimping, and then the tail crimping is closely inserted into the first jack of the outer conductor. During the insertion process of the tail crimping, the first inner conductor of the coaxial cable abuts and communicates with the second inner conductor in the SMA connector. The structure is simple, the connection is convenient and fast, and the shielding effect of the insulating medium and the insulating layer is good. The radio frequency coaxial connection wire of the present application has excellent signal transmission stability, low loss and high reliability in the high frequency band of 0-6 GHz;

[0023] 2. The cooperative setting of the limiting block and the limiting groove enables the insulating medium to be accurately positioned and installed within the outer conductor, thereby ensuring the precise connection between the first inner conductor within the tail press inserted into the outer conductor and the second inner conductor within the SMA connector, and ensuring the stability of signal transmission.

[0024] 3. The matching design of the blind hole on the second inner conductor and the first inner conductor makes the connection between the first inner conductor and the second inner conductor more stable, ensuring the continuity of signal transmission. Moreover, the chamfer on the first inner conductor facilitates the smooth insertion of the first inner conductor into the blind hole, improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following-described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0027] Figure 2 is the cross-sectional structural schematic diagram of the embodiment of the present application;

[0028] Figure 3 is Figure 2 the partial enlarged schematic diagram at A in

[0029] Figure 4 aiming to show the connection structure between the SMA connector and the coaxial cable;

[0030] is the actual standing wave ratio diagram of the RF coaxial cable of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will further elaborate on the present application in conjunction with the attached Figures 1-4 drawings.

[0032] The embodiment of the present application discloses an IPEX to SMA RF coaxial cable applicable to the 0 - 6 GHz frequency band. Refer to Figures 1-2, the IPEX to SMA radio frequency coaxial cable applicable to the 0-6 GHz frequency band includes a coaxial cable 1, an SMA connector 2, and an IPEX connector 3. One end of the coaxial cable 1 is connected to the IPEX connector 3, and the other end of the coaxial cable 1 is connected to the SMA connector 2, achieving the functional requirement of effectively connecting two types of connectors, IPEX and SMA. The coaxial cable 1 includes an outer skin 11, a conductive layer 12, an insulating layer 13, and a first inner conductor 14 arranged in sequence from outside to inside.

[0033] Refer to Figure 1 , the SMA connector 2 includes an outer conductor 21, an insulating medium 22, a second inner conductor 23, and a crimping tail 24. An external thread 211 is provided on the peripheral wall at the front end of the outer conductor 21, and the external thread 211 is used for threaded cooperation with the antenna port to achieve a fast and stable connection between the SMA connector 2 and the antenna port. Further, in order to improve the stability of the threaded connection between the outer conductor 21 and the antenna port, a spring washer 212, an internal tooth washer 213, and a nut 214 are sequentially sleeved on the external thread 211 of the outer conductor 21 in advance. The nut 214 is threadedly connected to the external thread 211. When the outer conductor 21 is threadedly connected to the antenna port, the nut 214 abuts against the antenna port. The combined use of the spring washer 212, the internal tooth washer 213, and the nut 214 plays a role in preventing rotation and loosening of the antenna port, improving the connection stability. On the side wall at the rear end of the outer conductor 21, pins 215 are provided along a direction perpendicular to the axis of the external thread 211. Four pins 215 are symmetrically arranged, and the pins 215 are used for plugging and fixing with the PCB board to improve the stability of the overall structure.

[0034] Refer to Figures 2-3 , a through first jack 216 is provided on the end face at the rear end of the outer conductor 21, and the first jack 216 is coaxial with the external thread 211. The insulating medium 22 is tightly inserted into the first jack 216 from the rear end of the outer conductor 21. In order to facilitate the positioning of the insulating medium 22, a limiting block 221 is integrally formed at the end of the insulating medium 22 close to the rear end of the outer conductor 21. The limiting block 221 is coaxial with the insulating medium 22, and the diameter of the limiting block 221 is larger than the outer diameter of the insulating medium 22. A limiting groove 217 matching the outer shape of the limiting block 221 is provided on the inner wall of the first jack 216 of the outer conductor 21. During use, when the insulating medium 22 is inserted into the first jack 216 until the limiting block 221 abuts against the bottom of the limiting groove 217, it can be determined that the insulating medium 22 is assembled in place.

[0035] A placement hole is coaxially provided in the insulating medium 22, and the second inner conductor 23 is tightly fitted and clamped in the placement hole. A blind hole 231 is coaxially provided on the end face of the second inner conductor 23 near the rear end of the outer conductor 21, and the diameter of the blind hole 231 is the same as the diameter of the first inner conductor 14 of the coaxial cable 1. The tail press 24 includes an insertion part and an exposed part that are coaxially and integrally formed. The outer diameter of the insertion part is larger than the outer diameter of the exposed part, and the outer diameter of the insertion part is the same as the diameter of the limiting groove 217. A second jack 241 is coaxially provided on the tail press 24, and the diameter of the second jack 241 is the same as the outer diameter of the conductive layer 12 of the coaxial cable 1.

[0036] During assembly, one end of the coaxial cable 1 is connected to the IPEX connector 3, and then the outer skin 11, conductive layer 12, and insulating layer 13 of the other end of the coaxial cable 1 are cut off. After cutting, the structures of each layer of the coaxial cable 1 are exposed in a stepped manner. Then, the conductive layer 12 is passed through the second jack 241 of the tail press 24. At this time, the conductive layer 12 is connected to the tail press 24. Next, the insertion part of the tail press 24 is tightly fitted and inserted into the limiting groove 217 of the outer conductor 21 until the tail press 24 abuts against the limiting block 221 on the insulating medium 22. During the process of the coaxial cable 1 being inserted with the tail press 24, the first inner conductor 14 gradually inserts into the blind hole 231 of the second inner conductor 23 to form an electrical connection. The structure is simple, the assembly is convenient, and the connection between the first inner conductor 14 and the second inner conductor 23 is stable and reliable; refer to Figure 4 After testing, the radio frequency coaxial connecting wire of the present application has excellent signal transmission stability, low loss, and high reliability within the frequency range of 0 - 6 GHZ, and the voltage standing wave ratio VSWR is good. In addition, in order to facilitate the smooth insertion of the first inner conductor 14 into the blind hole 231 of the second inner conductor 23, the end of the first inner conductor 14 is chamfered.

[0037] Furthermore, refer to Figures 2-3 To prevent the second inner conductor 23 in the SMA connector 2 from being pulled out when the coaxial cable 1 is stressed during assembly and use, an anti - pull - out ring 232 is coaxially and integrally formed on the peripheral wall of the second inner conductor 23. The outer diameter of the anti - pull - out ring 232 gradually decreases along the axial direction from near the limiting block 221 to away from the limiting block 221. When the second inner conductor 23 is assembled in place, the anti - pull - out ring 232 can limit the second inner conductor 23 from being pulled out of the insulating medium 22 from the rear end of the outer conductor 21.

[0038] In addition, a heat - shrinkable tube 4 is sleeved at the connection between the exposed part of the tail press 24 and the coaxial cable 1. The heat - shrinkable tube 4 is simultaneously sleeved on the exposed part and the outer skin 11. After the coaxial cable 1 is connected to the tail press 24, heating the heat - shrinkable tube 4 can fix the outer skin 11 of the coaxial cable 1 to the tail press 24. The heat - shrinkable tube 4 enhances the electrical insulation performance and mechanical strength of the connecting wire at this part, and improves the overall reliability of the connecting wire.

[0039] The implementation principle of the IPEX to SMA radio frequency coaxial cable applicable to the 0-6 GHz frequency band in the embodiments of the present application is as follows: When in use, one end of the coaxial cable 1 is connected to the IPEX connector 3, and then the other end of the coaxial cable 1 is cooperatively inserted into the second jack 241 of the crimp tail 24. The conductive layer 12 of the coaxial cable 1 is in communication with the crimp tail 24, and then the crimp tail 24 is cooperatively pressed into the limiting groove 217 of the outer conductor 21. During the pressing process of the crimp tail 24, the first inner conductor 14 of the coaxial cable 1 thereon is simultaneously inserted into the blind hole 231 of the second inner conductor 23 in the SMA connector 2, thereby realizing the connection between the coaxial cable and the SMA connector 2. The radio frequency coaxial cable of the present application is convenient to assemble, and has excellent signal transmission stability, low loss and high reliability in the high frequency band of 0-6 GHz, improving the problem of an IPEX to SMA radio frequency coaxial cable for the 0-6 GHz frequency band with excellent performance.

[0040] The above are all optional embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band, characterized in that: It includes a coaxial cable (1), an SMA connector (2) and an IPEX connector (3). The coaxial cable (1) includes an outer skin (11), a conductive layer (12), an insulating layer (13) and a first inner conductor (14) arranged in sequence from outside to inside. The SMA connector (2) includes an outer conductor (21), an insulating medium (22), a second inner conductor (23) and a tail clamp (24). A first jack (216) is formed on the outer conductor (21). The insulating medium (22) is fitted and inserted into the first jack (216). The second inner conductor (23) is coaxially inserted through the insulating medium (22). A second jack (241) is formed on the tail clamp (24). One end of the coaxial cable (1) is fitted and inserted into the second jack (241). The conductive layer (12) is connected to the tail clamp (24). The tail clamp (24) is fitted and inserted into the first jack (216). The first inner conductor (14) is connected to the second inner conductor (23). The other end of the coaxial cable (1) is connected to the IPEX connector (3).

2. The IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band according to claim 1, wherein: One end of the insulating medium (22) is provided with a limiting block (221). The diameter of the limiting block (221) is larger than that of the insulating medium (22). A limiting groove (217) corresponding to the limiting block (221) is formed on the inner wall of the first jack (216). The diameter of the end of the tail clamp (24) for inserting into the first jack (216) is the same as that of the limiting groove (217).

3. An IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band according to claim 2, characterized in that: An anti - detachment ring (232) is coaxially and integrally formed on the peripheral wall of the second inner conductor (23). The outer diameter of the anti - detachment ring (232) gradually decreases along the axial direction from near the limiting block (221) to away from the limiting block (221).

4. An IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band according to claim 1, characterized in that: A blind hole (231) is formed at the center of the end face of the second inner conductor (23). The diameter of the blind hole (231) matches the diameter of the first inner conductor (14). A chamfer is formed at one end of the first inner conductor (14) for inserting into the blind hole (231).

5. A kind of IPEX to SMA radio frequency coaxial connecting wire applicable to the 0-6 GHz frequency band according to claim 1, characterized in that: A heat - shrinkable tube (4) is sleeved on the outer wall at the connection between the tail clamp (24) and the coaxial cable (1).

6. An IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band according to claim 1, characterized in that: An external thread (211) is formed on the outer wall of the front end of the outer conductor (21). The external thread (211) is coaxial with the first jack (216). Plug pins (215) are provided at the rear end of the outer conductor (21). The plug pins (215) are used for being inserted and fixed on a PCB board.

7. An IPEX to SMA radio frequency coaxial connecting line applicable to the 0-6 GHz frequency band according to claim 6, characterized in that: A spring washer (212), an internal - tooth washer (213) and a nut (214) are sequentially sleeved on the external thread (211) of the outer conductor (21).

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