Phase shifter intermodulation device

Abstract

A phase shifter intermodulation device comprises a phase shifter, a load body, a first coaxial cable and a coupling connector. One end of the first coaxial cable is detachably connected with the phase shifter, the other end of the first coaxial cable penetrates through the coupling connector and is connected with one end of the second coaxial cable in a welded mode, and the other end of the second coaxial cable is electrically connected with the load body. According to the invention, no welding point is formed on the phase shifter, so that after the test is finished, the first coaxial cable is directly pulled out from the corresponding phase shifter, the intermodulation test efficiency, consistency and stability of the phase shifter are improved, and the test cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile communications, in particular to a feeding network intermodulation device, and more particularly to a phase shifter intermodulation device of a feeding network. Background Art

[0002] As we all know, with the development of the communications industry, the passive intermodulation (PIM) index of base station antennas determines parameters such as communication quality and anti-interference ability. Therefore, the requirements for passive intermodulation index on base station antennas are getting higher and higher. Correspondingly, the intermodulation requirements for phase shifters in the base station antenna feed network are also getting higher and higher. The workload of phase shifter intermodulation testing is increasing, and the requirements for test stability and test efficiency are increasing.

[0003] The existing phase shifter intermodulation test device welds each branch of the phase shifter that needs to be tested for intermodulation to the corresponding load through the ground terminal to ensure the stability of the physical and electrical connection between the phase shifter and the load. However, this test technology requires re-welding after each test, which makes it impossible to reuse it, and produces a large number of solder joints on each branch of the phase shifter. Such metal solder joints themselves are a major disadvantage affecting the quality of passive intermodulation. For example, poor welding often occurs during the phase shifter test, which requires additional time to re-weld. This results in low efficiency, high cost, and insufficient one-time pass rate and stability for phase shifter intermodulation testing.

[0004] Therefore, it is necessary to provide an improved phase shifter intermodulation device to overcome the defects of the prior art phase shifter intermodulation device. Summary of the invention

[0005] The purpose of the present invention is to solve the above problem and provide a phase shifter intermodulation device.

[0006] To meet the purpose of the present invention, the present invention adopts the following technical solutions:

[0007] A phase shifter intermodulation device comprises: a phase shifter, a load, a first coaxial cable and a coupling connector; one end of the first coaxial cable is detachably connected to the phase shifter, the other end of the first coaxial cable passes through the coupling connector and is welded to one end of a second coaxial cable, and the other end of the second coaxial cable is electrically connected to the load.

[0008] Preferably, the coupling connector comprises a connector body; a positioning pit is provided at one end of the connector body; the other end of the first coaxial cable passes through the coupling connector and is welded to the one end of the second coaxial cable in the positioning pit.

[0009] Further preferably, a limit block is arranged in the positioning pit, and a solder receiving pit is formed at the bottom of the limit block; the other end of the first coaxial cable passes through the coupling connector and extends into the solder receiving pit; the one end of the second coaxial cable extends into the solder receiving pit; the solder arranged in the solder receiving pit welds the other end of the first coaxial cable to the one end of the second coaxial cable.

[0010] Preferably, a first cable positioning groove and a second cable positioning groove which are connected to and opposite to the solder receiving pit are provided on the limit block; the first coaxial cable is laid in the first cable positioning groove, and the second coaxial cable is laid in the second cable positioning groove, so that the other end of the first coaxial cable is aligned with the one end of the second coaxial cable in the solder receiving pit.

[0011] Further preferably, a groove is formed on the connector body, and the positioning pit is opened at the bottom of the groove; a vertical wall is formed on the side of the groove, and a cable through-hole is opened on the vertical wall; and the one end of the second coaxial cable passes through the cable through-hole and enters the solder containing pit.

[0012] Furthermore, optionally, an insulating sleeve is provided between the first coaxial cable and the connector body to form insulation therebetween.

[0013] Preferably, the device further comprises a reflector plate, on which the phase shifter and the coupling connector are arranged, and further comprises an intermodulation test connector connected to the coupling connector.

[0014] Further preferably, a fixing plate is arranged on the reflecting plate, and the intermodulation test connector is arranged on the fixing plate.

[0015] Preferably, it further comprises a tooling vehicle, the tooling vehicle has a containing space, the load-bearing body is arranged in the containing space; the reflecting plate is arranged on the top of the containing space.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] In the present invention, since the phase shifter to be tested for intermodulation is not directly welded and connected to the load body, but is detachably electrically connected to one end of the first coaxial cable, the other end of the first coaxial cable is welded and connected to the load body via the second coaxial cable, thus ensuring that the phase shifter is not welded with other components, and thus no welding point is formed on the phase shifter. Thus, after the test is completed, the first coaxial cable can be directly unplugged from the corresponding phase shifter, which greatly improves the intermodulation test efficiency, consistency and stability of the phase shifter, and also reduces the test cost.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 FIG. 4 is a three-dimensional structural diagram of a phase shifter intermodulation device according to an embodiment of the present invention.

[0021] Figure 2 The figure is a three-dimensional structural diagram of a connector body of a coupling connector of a phase shifter intermodulation device according to an embodiment of the present invention.

[0022] Figure 3 The figure is a three-dimensional structural diagram of a limit block of a coupling connector of a phase shifter intermodulation device according to an embodiment of the present invention.

[0023] Figure 4 for Figure 1 An enlarged structural diagram of part A of the phase shifter intermodulation device is shown. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0025] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be an intermediate element. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0026] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as herein.

[0027] In one embodiment of the present invention, reference Figure 1-4 , a phase shifter intermodulation device 100 is provided, comprising: a phase shifter 10, a load body 70, a first coaxial cable 20 and a coupling connector 30; one end of the first coaxial cable 20 is detachably connected to the phase shifter 10, the other end of the first coaxial cable 20 passes through the coupling connector 30 and is welded to one end of a second coaxial cable 50, and the other end of the second coaxial cable 50 is electrically connected to the load body 70.

[0028] In the above embodiment, since the phase shifter 10 to be tested for intermodulation is not directly welded to the load 70, but is detachably electrically connected to one end of the first coaxial cable 20, and the other end of the first coaxial cable 20 is welded to the load 70 via the second coaxial cable 50, during the intermodulation test of the phase shifter 10, no part of the phase shifter 10 itself is welded to other components, and naturally no welding point is formed on the phase shifter 10. In this way, when the test is completed, the first coaxial cable 20 can be directly unplugged from the corresponding phase shifter 10 to release the physical connection between the two, thereby greatly improving the intermodulation test efficiency, consistency and stability of the phase shifter, and also reducing the test cost.

[0029] Preferably, in the above embodiment, the coupling connector 30 includes a connector body 32. Specifically, a positioning hole 324 is provided at one end of the connector body 32; the other end of the first coaxial cable 20 passes through the coupling connector 30 and is welded to the one end of the second coaxial cable 50 in the positioning hole 324. This setting can ensure that, for example, Figure 4 The solder 102 shown is confined within the positioning pit 324 after being melted, thereby facilitating accurate soldering.

[0030] Further preferably, a limit block 34 is arranged in the positioning pit 324, and a solder receiving pit 342 is formed at the bottom of the limit block 34; the other end of the first coaxial cable 20 passes through the coupling connector 30 and extends into the solder receiving pit 342; the one end of the second coaxial cable 50 extends into the solder receiving pit 342; the solder 102 arranged in the solder receiving pit 342 welds the other end of the first coaxial cable 20 and the one end of the second coaxial cable 50 together.

[0031] In this embodiment, after the solder 102 is melted and the two cables are welded, the melted solder is confined in the solder containing pit 342, thereby ensuring the accuracy of the welding position and facilitating the recycling of the solder. In this way, the solder can be greatly saved in the actual welding process, avoiding solder waste and benefiting environmental protection.

[0032] Further preferably, in order to more accurately control the welding position, the following settings can be made: a first cable positioning groove 346 and a second cable positioning groove 344 which are connected to and opposite to the solder receiving pit 342 are provided on the limit block 34; the first coaxial cable 20 is laid in the first cable positioning groove 344, and the second coaxial cable 50 is laid in the second cable positioning groove 346, thereby ensuring that the other end of the first coaxial cable 20 is aligned with the one end of the second coaxial cable 50 in the solder receiving pit 342, thereby facilitating the realization of reliable welding and greatly saving the amount of solder used.

[0033] Preferably, a groove 322 is formed on the connector body 32, and the positioning pit 324 is opened at the bottom of the groove 322; a vertical wall 3222 is formed on the side of the groove 322, and a cable through-hole 32224 is opened on the vertical wall 3222; the one end of the second coaxial cable 50 passes through the cable through-hole 32224 and enters the solder receiving pit 342. The purpose of forming the groove 322 is to form a certain operating space on the connector body 32, so that the operator can pull the first coaxial cable 20 out of the body and pull it into the solder receiving pit 342, and it is also convenient for the operator to pass the second coaxial cable 50 through the cable through-hole 32224 and pull it into the solder receiving pit 342, which greatly improves the working efficiency. At the same time, the groove 322 is also formed to allow the solder to be conveniently placed in the solder receiving pit 342, so as to realize the welding operation. The formed vertical wall 3222 is convenient for fixing the end of the second coaxial cable 50 , that is, the outer insulating sleeve of the second coaxial cable 50 can be fixed on the vertical wall 3222 , thereby preventing the second coaxial cable 50 from being torn apart due to external pulling during the test.

[0034] Preferably, an insulating sleeve 104 (such as Figure 4 As shown), insulation is formed between the two to avoid mutual influence and reduce the intermodulation test accuracy of the phase shifter 10, so that the outer conductor of the first coaxial cable 20 and the coupling connector 301 can be prevented from conductively contacting and generating nonlinearity, so as to avoid generating new unintentional intermodulation problems.

[0035] Preferably, a reflector 80 is further included, and the phase shifter 10 and the coupling connector 30 are arranged on the reflector 80. This arrangement can fix the positions of the phase shifter 10 and the coupling connector 30, thereby facilitating the stable connection of the first coaxial cable 20, and will not cause the first coaxial cable 20 to loosen from the phase shifter 10 during the intermodulation test of the phase shifter 10, resulting in disconnection or unstable connection. It should be noted that: since the outer surfaces of the reflector and the coupling connector are both made of conductive metal, an insulating epoxy plate (not shown) can be sandwiched between the reflector and the coupler to avoid direct contact between the coupling connector and the metal reflector, thereby avoiding poor intermodulation caused by poor metal contact.

[0036] Preferably, in order to make the coupling connector 30 more convenient to properly couple and connect with the phase shifter 10 to be tested for intermodulation, the position of the coupling connector 30 on the reflector 80 can be adjusted. Specifically, a plurality of pairs of positioning holes (not shown) are provided on the reflector 80; correspondingly, a plurality of, for example, four fixing holes 326 are provided at appropriate positions of the connector body 32 of the coupling connector 30, such as on both sides; by moving the position of the coupling connector 30 on the reflector 80, the plurality of fixing holes 326 are respectively aligned with the positioning holes at different positions on the reflector 80, and then the position of the coupling connector 30 on the reflector 80 is adjusted and then fixed by, for example, passing a plastic rivet through the fixing hole 326 and the positioning hole, so that the position of the coupling connector 30 can be adaptively adjusted according to the different configuration types of the wiring terminals of different types of phase shifters, so that the coupling connector 30 can be smoothly coupled and connected with the corresponding wiring terminals of the phase shifter. In other words, through the above setting, the position of the coupling connector can be flexibly changed to achieve the effect of quickly matching the phase shifter port.

[0037] Preferably, there is further an intermodulation test connector 40 connected to the coupling connector 30, which can be connected to an external test device to implement intermodulation testing of the phase shifter 10. In one embodiment, the intermodulation test connector 40 can be, for example, a DIN type / 4.3-10 type connector, and of course, other types of connectors known in the industry can also be used, and the present invention does not make specific limitations on this.

[0038] Further preferably, a fixing plate 84 is provided on the reflector 80, and the intermodulation test connector 40 is provided on the fixing plate 84. The intermodulation test of the phase shifter 10 is usually performed many times, so the connection frequency between the intermodulation test connector 40 and the external test equipment is also high. In order to ensure the stability of the connection between the two, the intermodulation test connector 40 needs to be well fixed, and here, it is fixed on the fixing plate 84.

[0039] Preferably, it further includes a tooling vehicle 60, the tooling vehicle 60 has a receiving space 62, and the load body 70 is arranged in the receiving space 62. Since the phase shifter 10 to be intermodulation tested usually has many ports, a corresponding number of load bodies 70 are required for testing. The corresponding number of load bodies 70 is huge in number, occupies a large space, and has a large weight, so it is arranged in the receiving space 62 of the tooling vehicle 60, which is convenient for the operator to move the phase shifter intermodulation test device 100 as a whole, so that the test can be carried out in different occasions as needed, which can be achieved by moving the tooling vehicle 60 to the required place, saving time and labor, and having high working efficiency.

[0040] Further preferably, the reflective plate 80 is disposed on the top of the accommodating space 62 , so that the entire phase shifter intermodulation device 100 is disposed on the tooling vehicle 60 , thereby achieving the mobility of the entire intermodulation device 100 .

[0041] In the present invention, the length of the coupling connector 30 can be flexibly set as needed. For example, the length of the coupling connector 30 can be about 1 / 4 of the working wavelength, and the length can be selected according to the actual frequency band. And the quarter-wavelength principle in the technical field can be used to make the coupling currents on the outer conductor of the first coaxial cable 20 offset each other in the coupling connector, so that the outer conductor leakage cable of the first coaxial cable 20 is significantly minimized, and electrical performance matching is achieved.

[0042] In addition, in the present invention, the number of ports of the phase shifter 10 can be expanded according to actual product applications, and the number of coupling connectors 30 can be increased according to the number of ports of the phase shifter 10 .

[0043] In summary, the phase shifter intermodulation device provided by the present invention reduces a large number of welding connection points, reduces the influencing factors of passive intermodulation, and improves the intermodulation stability. In addition, the present invention has the technical advantages of high testing efficiency, strong mobility, saving solder and labor costs, while reducing welding pollution gas, and being more environmentally friendly. Moreover, the present invention has a wide range of application and strong flexibility, and can formulate coupling connectors of corresponding sizes according to different application scenarios and frequency bands for matching use.

[0044] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0045] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A phase shifter intermodulation device, comprising: A phase shifter, a load, a first coaxial cable and a coupling connector; characterized in that one end of the first coaxial cable is detachably connected to the phase shifter, the other end of the first coaxial cable passes through the coupling connector and is welded to one end of the second coaxial cable, and the other end of the second coaxial cable is electrically connected to the load.

2. The phase shifter intermodulation device according to claim 1, characterized in that: The coupling connector comprises a connector body; a positioning pit is provided at one end of the connector body; the other end of the first coaxial cable passes through the coupling connector and is welded to the one end of the second coaxial cable in the positioning pit.

3. The phase shifter intermodulation device according to claim 2, characterized in that: A limit block is arranged in the positioning pit, and a solder receiving pit is formed at the bottom of the limit block; the other end of the first coaxial cable passes through the coupling connector and extends into the solder receiving pit; The one end of the second coaxial cable extends into the solder receiving pit; The solder disposed in the solder receiving pit solders the other end of the first coaxial cable and the one end of the second coaxial cable together.

4. The phase shifter intermodulation device according to claim 3, characterized in that: The limiting block is provided with a first cable positioning groove and a second cable positioning groove which are in communication with and opposite to the solder receiving pit; The first coaxial cable is laid in the first cable positioning groove, and the second coaxial cable is laid in the second cable positioning groove, so that the other end of the first coaxial cable is aligned with the one end of the second coaxial cable in the solder receiving pit.

5. The phase shifter intermodulation device according to claim 4, characterized in that: A groove is formed on the connector body, and the positioning pit is opened at the bottom of the groove; a vertical wall is formed on the side of the groove, and a cable through-hole is opened on the vertical wall; the one end of the second coaxial cable passes through the cable through-hole and enters the solder containing pit.

6. The phase shifter intermodulation device according to claim 5, characterized in that: An insulating sleeve is arranged between the first coaxial cable and the connector body to form insulation between the two.

7. The phase shifter intermodulation device according to claim 1, characterized in that: It further includes a reflective plate, and the phase shifter and the coupling connector are arranged on the reflective plate.

8. The phase shifter intermodulation device according to claim 1, characterized in that: There is further an intermodulation test connector connected to the coupling connector.

9. The phase shifter intermodulation device according to claim 8, characterized in that: A fixing plate is arranged on the reflecting plate, and the intermodulation test joint is arranged on the fixing plate.

10. The phase shifter intermodulation device according to claim 7, characterized in that: It further comprises a tooling vehicle, the tooling vehicle has a containing space, the load body is arranged in the containing space; the reflecting plate is arranged on the top of the containing space.

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