Radio frequency test needle and radio frequency test equipment

Abstract

The invention discloses a radio frequency test needle and radio frequency test equipment, and relates to the field of radio frequency testing; the radio frequency test needle comprises a radio frequency test component and a connecting flange, a floating hole is penetrated through the connecting flange; the connecting flange is sleeved on the radio frequency test component through the floating hole; the radio frequency test component comprises an inner shell, and a first outer shell and a second outer shell; the first outer shell and the second outer shell are respectively arranged on opposite sides of the connecting flange; one end of the inner shell passes through the floating hole and is plugged into the first outer shell; the second outer shell is sleeved outside the inner shell; installation gaps are reserved between the inner side wall of the first outer shell and the outer side wall of the inner shell, and between the inner side wall of the second outer shell and the outer side wall of the inner shell; a floating spring is also sleeved outside the inner shell, and the two ends of the floating spring are respectively placed in the two installation gaps, so that the radio frequency test needle and the inspection object have tolerance performance and can be accurately aligned to prevent the radio frequency test needle and the inspection object from being damaged.

Description

Technical Field

[0001] The present invention relates to the field of radio frequency testing, and in particular to a radio frequency testing needle and radio frequency testing equipment. Background Art

[0002] RF test pin is a kind of detection tool, people can use RF test pin to measure the real characteristics of RF components at the wafer level; that is to say, RF test pin plays an important role in almost every stage of RF product life cycle, such as technology development, model parameter extraction, design verification and debugging, as well as small-scale production test and final production test; among them, RF test pin can shorten the research and development time and greatly reduce the cost of developing new products.

[0003] At present, the RF test needle in the prior art needs to contact the RF test needle with the product. However, the RF test needle in the prior art mostly uses a blind insertion method to make the RF test needle contact with the product. Once the RF test needle is not aligned with the product, the RF test needle may be bent and damaged, causing the RF test needle to be easily damaged. Summary of the invention

[0004] The purpose of the present invention is to provide a radio frequency test needle and a radio frequency test device to solve the problem that the radio frequency test needle is easily damaged in the prior art.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A radio frequency test needle comprises a radio frequency test assembly and a connecting flange, wherein a floating hole for installing the radio frequency test assembly is provided through the connecting flange; the connecting flange is sleeved on the radio frequency test assembly through the floating hole;

[0007] The radio frequency test assembly comprises an inner shell, and a first outer shell and a second outer shell for covering the inner shell; the first outer shell and the second outer shell are respectively arranged on opposite sides of the connecting flange;

[0008] One end of the inner shell passes through the floating hole and is inserted into the first outer shell; the second outer shell is sleeved outside the inner shell;

[0009] Installation gaps are provided between the inner wall of the first outer shell and the outer wall of the inner shell, and between the inner wall of the second outer shell and the outer wall of the inner shell. A floating spring is also sleeved on the outside of the inner shell, and both ends of the floating spring are respectively placed in the two installation gaps.

[0010] Optionally, the radio frequency test assembly further includes a first insulator installed in the inner shell, and an inner conductor penetrating the first insulator along a hole depth direction of the floating hole; the inner conductor and the first insulator are fixed.

[0011] Optionally, the first insulator is formed by butting two split insulators symmetrically distributed along their midlines;

[0012] A first through hole for installing the inner conductor is formed at the butt joint of the two split insulators, and a first positioning groove is provided on the hole wall of the first through hole;

[0013] A positioning ring is convexly provided on the outer side wall of the inner conductor and is used to cooperate with the first positioning groove to fix the inner conductor and the first insulator.

[0014] Optionally, the inner conductor includes a first pin for electrically connecting to a detection circuit and a second pin for electrically connecting to a product;

[0015] A first spring is arranged between the first pin and the second pin; one end of the first spring abuts against the first pin, and the other end of the first spring abuts against the second pin.

[0016] Optionally, the radio frequency test assembly further comprises a movable outer shell; one end of the movable outer shell can be movably sleeved in the second outer shell;

[0017] A second spring is provided between the movable outer shell and the inner shell; the second spring is provided in the second outer shell, one end of the second spring abuts against an end surface of the inner shell, and the other end of the second spring abuts against an end surface of the movable outer shell.

[0018] Optionally, an extension portion is provided at one end of the movable outer shell and extends toward the inner shell, and a deformation groove is provided on the extension portion;

[0019] An inclined cavity whose inner diameter gradually decreases in a direction away from the movable outer shell is formed on the inner side of the end of the inner shell close to the movable outer shell, and the extension portion abuts against the wall surface of the inclined cavity.

[0020] Optionally, a second insulating medium and a third insulating medium are provided between the inner conductor and the movable outer shell;

[0021] The second insulating medium is provided with a second through hole, and the third insulating medium is provided with a third through hole; the inner conductor passes through the second through hole and the third through hole;

[0022] The movable outer shell is provided with a second positioning groove at a position corresponding to the second insulating medium; and the movable outer shell is provided with a third positioning groove at a position corresponding to the third insulating medium.

[0023] Optionally, the movable outer shell includes a first movable combined shell, a second movable combined shell and a third movable combined shell which are arranged in sequence;

[0024] One end of the first movable combined housing passes through the second spring and is movably inserted into the inner housing;

[0025] The second movable combined housing is sleeved outside an end of the first movable combined housing away from the inner housing, and the second movable combined housing is butted against the first movable combined housing to form the second positioning groove;

[0026] The third movable combined housing is sleeved outside an end of the second movable combined housing away from the inner housing, and the third movable combined housing is butted against the second movable combined housing to form the third positioning groove.

[0027] Optionally, the ratio of the aperture of the first through hole to the outer diameter of the first insulator, the ratio of the aperture of the second through hole to the outer diameter of the second insulating medium, and the ratio of the aperture of the third through hole to the outer diameter of the third insulating medium are all equal.

[0028] A radio frequency testing device comprises a connecting socket and the radio frequency testing needle as described above;

[0029] The connecting seat and the connecting flange are fixedly connected.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The RF test needle and RF test equipment provided by the present invention have tolerance performance by arranging a floating spring outside the inner shell and placing the two ends of the floating spring respectively in the two installation gaps; when the RF test component is not aligned with the product and is offset, the inner shell and the second outer shell below the connecting flange are offset in the direction close to the product relative to the connecting flange through the floating spring, and the inner shell and the second outer shell above the connecting flange are offset in the direction away from the product relative to the connecting flange through the floating spring, thereby avoiding deformation of the RF test component due to misalignment with the product and avoiding the RF test component being bent by the product; the RF test needle and the inspection object can be accurately aligned to prevent damage to the RF test needle and the inspection object, effectively improving the tolerance performance of the RF test needle and the RF test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0034] Figure 1 A schematic diagram of the overall structure of a radio frequency detection needle provided in Embodiment 1 of the present invention;

[0035] Figure 2 A schematic diagram of the front view structure of the radio frequency detection needle provided in the first embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the side structure of a radio frequency detection needle provided in the first embodiment of the present invention;

[0037] Figure 4 for Figure 3 Schematic diagram of the cross-section structure at AA;

[0038] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B;

[0039] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at C;

[0040] Figure 7 for Figure 4 A schematic diagram of the local enlarged structure at D;

[0041] Figure 8 for Figure 4 A schematic diagram of the local enlarged structure at E;

[0042] Fig. 9 for Figure 4 Schematic diagram of the cross-sectional structure at FF.

[0043] Illustration: 10, connecting flange; 101, floating hole; 20, floating spring; 30, inner shell; 301, inclined cavity; 40, first outer shell; 50, second outer shell;

[0044] 60, inner conductor; 601, first pin; 602, second pin; 603, first spring;

[0045] 70, first insulator; 701, first through hole; 702, first positioning groove;

[0046] 80, movable outer shell; 801, extension portion; 802, first movable combined shell; 803, second movable combined shell; 804, third movable combined shell;

[0047] 90. Second spring; 100. Second insulating medium; 1001. Second through hole; 110. Third insulating medium; 1101. Third through hole. DETAILED DESCRIPTION

[0048] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0050] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0051] Please refer to Figures 1 to 9 , Figure 1 This is a schematic diagram of the overall structure of the radio frequency detection needle provided in the first embodiment of the present invention. Figure 2 This is a front view structural diagram of a radio frequency detection needle provided in the first embodiment of the present invention, Figure 3 This is a schematic side view of the structure of the radio frequency detection needle provided in the first embodiment of the present invention. Figure 4 for Figure 3 Schematic diagram of the cross-section structure at AA, Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B. Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at C. Figure 7 for Figure 4 A schematic diagram of the local enlarged structure at D. Figure 8 for Figure 4 A schematic diagram of the local enlarged structure at E. Fig. 9 for Figure 4 Schematic diagram of the cross-sectional structure at FF.

[0052] Embodiment 1

[0053] This embodiment provides a radio frequency test needle, which is applied to the field of radio frequency testing and can test radio frequency products. The radio frequency test needle of this embodiment has a floating function and a strong tolerance performance, and can prevent the radio frequency test needle from being accidentally damaged.

[0054] like Figures 1 to 5 As shown, the RF test needle of this embodiment includes a RF test component, which is characterized in that it also includes a connecting flange 10, and a floating hole 101 for installing the RF test component is opened through the connecting flange 10; the connecting flange 10 is sleeved on the RF test component through the floating hole 101.

[0055] The radio frequency test assembly includes an inner shell 30 , and a first outer shell 40 and a second outer shell 50 for covering the inner shell 30 ; the first outer shell 40 and the second outer shell 50 are respectively disposed on opposite sides of the connecting flange 10 .

[0056] One end of the inner shell 30 passes through the floating hole 101 and is inserted into the first outer shell 40 ; the second outer shell 50 is sleeved outside the inner shell 30 .

[0057] Installation gaps are provided between the inner wall of the first outer shell 40 and the outer wall of the inner shell 30, and between the inner wall of the second outer shell 50 and the outer wall of the inner shell 30. A floating spring 20 is also provided outside the inner shell 30, and both ends of the floating spring 20 are respectively placed in the two installation gaps.

[0058] Specifically, by sleeved the floating spring 20 outside the inner shell 30, and placing the two ends of the floating spring 20 in the two installation gaps respectively, the RF test needle has tolerance performance; when the RF test component is not aligned with the product and is offset, the inner shell 30 and the second outer shell 50 below the connecting flange 10 are offset toward the product relative to the connecting flange 10 through the floating spring 20, and the inner shell 30 and the second outer shell 50 above the connecting flange 10 are offset toward the product relative to the connecting flange 10 through the floating spring 20, so as to avoid deformation of the RF test component due to misalignment with the product and avoid the RF test component being bent by the product; the RF test needle and the inspection object have tolerance performance and can be accurately aligned to prevent damage to the RF test needle and the inspection object, thereby effectively improving the tolerance performance of the RF test needle and the RF test equipment.

[0059] In addition, the inner shell 30 passes through the floating hole 101, and then one end of the inner shell 30 is inserted into the first outer shell 40, and then the second outer shell 50 is sleeved on the other end of the inner shell 30 to complete the assembly of the RF test component and the connecting flange 10. By making the connecting flange 10, the inner shell 30, the first outer shell 40 and the second outer shell 50 designed separately, on the one hand, it is convenient for the assembly of the RF test needle, and on the other hand, it reduces the difference between the minimum inner diameter and the maximum outer diameter of the connecting flange 10, the inner shell 30, the first outer shell 40 and the second outer shell 50, so that the amount of rod cutting used for forming each part is small and the processing cost is low. At the same time, because the connecting flange 10 is in the shape of a plate, it can be formed by stamping, which further reduces the manufacturing cost and processing time of the connecting flange 10.

[0060] It should be added that the installation gap between the inner shell 30 and the first outer shell 40 is the deflection cavity at the top end of the floating spring, and the installation gap between the inner shell 30 and the second outer shell 50 is the deflection cavity at the bottom end of the floating spring. The inner diameter of the deflection cavity at the bottom end of the floating spring is larger than the inner diameter of the deflection cavity at the top end of the floating spring, which provides a larger space for the deflection amount of the floating spring 20, avoids the floating spring 20 from being stuck during the deflection process, and improves the fault tolerance performance.

[0061] Furthermore, if Figure 4 and Figure 5 As shown, the RF test assembly further includes a first insulator 70 installed in the inner shell 30, and an inner conductor 60 penetrating the first insulator 70 along the hole depth direction of the floating hole 101; the inner conductor 60 and the first insulator 70 are fixed.

[0062] Furthermore, if Fig. 9 As shown, the first insulator 70 is formed by butting two divided insulators symmetrically distributed along the center line.

[0063] A first through hole 701 for mounting the inner conductor 60 is formed at the butt joint of the two split insulators, and a first positioning groove 702 is provided on the hole wall of the first through hole 701 .

[0064] A positioning ring is protruding from the outer wall of the inner conductor 60 and is used to cooperate with the first positioning groove 702 to fix the inner conductor 60 and the first insulator 70 .

[0065] Specifically, there are two split insulators, each of which is semi-cylindrical. The two split insulators can be spliced ​​to form a cylindrical first insulator 70, and the inner conductor 60 can be positioned by the first positioning groove 702 on the hole wall of the first through hole 701 and the first insulator 70 is respectively limited by the inner shell 30 and the first outer shell 40, so as to fix the position of the inner conductor 60 relative to the connecting flange 10; through the above arrangement, the position stability of the inner conductor 60 in the RF test needle is guaranteed. Therefore, under the premise of ensuring the position accuracy of the inner conductor 60, reducing the contact area between the inner conductor 60 and other parts can also ensure its position accuracy, thereby reducing the overall size of the inner conductor 60, thereby reducing the overall size of the RF test needle, saving space and cost.

[0066] Furthermore, if Figure 6 and Figure 7 The inner conductor 60 includes a first pin 601 for electrically connecting to a detection circuit and a second pin 602 for electrically connecting to a product.

[0067] A first spring 603 is disposed between the first pin 601 and the second pin 602 ; one end of the first spring 603 abuts against the first pin 601 , and the other end abuts against the second pin 602 .

[0068] By setting the first spring 603, a floating connection effect is achieved between the first pin 601 and the second pin 603, providing an axial floating effect for the inner conductor 60, thereby enhancing the overall fault tolerance performance of the radio frequency test assembly.

[0069] Furthermore, if Figure 4 As shown, the radio frequency test assembly further includes a movable outer shell 80 ; one end of the movable outer shell 80 can be movably sleeved in the second outer shell 50 .

[0070] A second spring 90 is provided between the movable outer shell 80 and the inner shell 30 ; the second spring 90 is provided in the second outer shell 50 , one end of the second spring 90 abuts against one end surface of the inner shell 30 , and the other end of the second spring 90 abuts against one end surface of the movable outer shell 80 .

[0071] Specifically, by disposing the second spring 90 , when the movable outer shell 80 abuts against the outer side of the product, it can be in close contact with the outer side of the product, thereby achieving a preliminary positioning effect and reducing the occurrence of the situation where the RF test component is not aligned with the product.

[0072] Furthermore, if Figure 4 and Figure 6 As shown, one end of the movable outer shell 80 is extended toward the inner shell 30 to form an extension portion 801 , and the extension portion 801 is provided with a deformation groove.

[0073] An inclined cavity 301 whose inner diameter gradually decreases in a direction away from the movable outer shell 80 is formed inside the end of the inner shell 30 close to the movable outer shell 80 , and the extension portion 801 abuts against the wall surface of the inclined cavity 301 .

[0074] Specifically, the direction in which the inner diameter of the inclined cavity of the inner shell 30 changes from large to small is the direction in which the inner shell 30 moves away from the second spring 90; wherein, when the RF test component contacts the product, the movable outer shell 80 contacts and continuously squeezes the product, and the movable outer shell 80 moves toward the connecting flange 10 under the action of pressure, and then the extension portion 801 moves toward the inside of the inclined cavity. As the extension portion 801 moves, the extension portion 801 is squeezed by the increasingly narrow cavity wall of the inclined cavity. Under the action of the deformation groove, the extension portion 801 deforms inwardly and continuously provides pressure, making the contact between the movable outer shell 80 and the inner shell 30 closer, thereby improving the transmission efficiency of high-frequency signals.

[0075] Furthermore, if Figure 7 and Figure 8 As shown, a second insulating medium 100 and a third insulating medium 110 are disposed between the inner conductor 60 and the movable outer shell 80 .

[0076] The second insulating medium 100 defines a second through hole 1001 , and the third insulating medium 110 defines a third through hole 1101 ; the inner conductor 60 passes through the second through hole 1001 and the third through hole 1101 .

[0077] The movable outer shell 80 is provided with a second positioning groove at a position corresponding to the second insulating medium 100; the movable outer shell 80 is provided with a third positioning groove at a position corresponding to the third insulating medium 110. The second insulating medium 100 and the third insulating medium 110 are used to assist in fixing the inner conductor 60, thereby improving the position accuracy and stability of the inner conductor 60.

[0078] Further, if Figure 7 and Figure 8 As shown, the movable outer shell 80 includes a first movable combined shell 802, a second movable combined shell 803 and a third movable combined shell 804 which are arranged in sequence.

[0079] One end of the first movable combined housing 802 passes through the second spring 90 and is movably inserted into the inner housing 30 .

[0080] The second movable assembled housing 803 is sleeved outside an end of the first movable assembled housing 802 away from the inner housing 30 , and the second movable assembled housing 803 and the first movable assembled housing 802 are butted against each other to form a second positioning groove.

[0081] The third movable combined housing 804 is sleeved outside the end of the second movable combined housing 803 away from the inner housing 30, and the third movable combined housing 804 and the second movable combined housing 803 are connected to form a third positioning groove. This structure facilitates the assembly of the RF test assembly and improves the assembly efficiency of the RF test needle.

[0082] Furthermore, the ratio of the aperture of the first through hole 701 to the outer diameter of the first insulator 70, the ratio of the aperture of the second through hole 1001 to the outer diameter of the second insulating medium 100, and the ratio of the aperture of the third through hole 1101 to the outer diameter of the third insulating medium 110 are all equal. By making the above-mentioned multiple ratios equal, the impedance characteristics of the inner conductor 60 are maintained at a certain value, which facilitates the RF test needle to measure the RF signal and improves the measurement accuracy.

[0083] To sum up, the RF test needle provided in this embodiment has fault-tolerant performance, which can prevent the RF test component from bending due to misalignment with the product, and prevent damage to the RF test needle and the inspection object. It also has high positioning accuracy, stable structure, small overall size, is easy to carry, and has low processing cost.

[0084] Embodiment 2

[0085] This embodiment provides a radio frequency test device, including a connection socket and a radio frequency test needle as in Embodiment 1. Embodiment 1 describes the specific structure and technical effects of the radio frequency test needle, and this embodiment refers to the radio frequency test needle and also has its technical effects.

[0086] The connection base is fixedly connected to the connection flange 10. The connection base can be connected to a cylinder, a linear motor or other mechanism for automatic detection of radio frequency products, or can be connected to a handheld handle for manual detection of radio frequency products.

[0087] To sum up, the RF test equipment provided in this embodiment has fault-tolerant performance, which can prevent the RF test component from bending due to misalignment with the product, and prevent damage to the RF test needle and the inspection object. It also has high positioning accuracy, stable structure, small overall size, is easy to carry, and has low processing cost.

[0088] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radio frequency test needle, comprising a radio frequency test assembly, characterized in that: It also comprises a connecting flange (10), wherein a floating hole (101) for mounting the radio frequency test component is formed through the connecting flange (10); the connecting flange (10) is sleeved on the radio frequency test component through the floating hole (101); The radio frequency test assembly comprises an inner shell (30), and a first outer shell (40) and a second outer shell (50) for covering the inner shell (30); the first outer shell (40) and the second outer shell (50) are respectively arranged on opposite sides of the connecting flange (10); One end of the inner shell (30) passes through the floating hole (101) and is inserted into the first outer shell (40); the second outer shell (50) is sleeved outside the inner shell (30); An installation gap is provided between the inner side wall of the first outer shell (40) and the outer side wall of the inner shell (30), and between the inner side wall of the second outer shell (50) and the outer side wall of the inner shell (30); a floating spring (20) is also provided outside the inner shell (30), and two ends of the floating spring (20) are respectively placed in the two installation gaps; The radio frequency test assembly further comprises a first insulator (70) installed in the inner shell (30), and an inner conductor (60) penetrating the first insulator (70) along the hole depth direction of the floating hole (101); the inner conductor (60) and the first insulator (70) are fixed; The first insulator (70) is formed by butting together two split insulators that are symmetrically distributed along their midlines; A first through hole (701) for installing the inner conductor (60) is formed at the butt joint of the two split insulators, and a first positioning groove (702) is provided on the hole wall of the first through hole (701); A positioning ring is convexly provided on the outer side wall of the inner conductor (60) for cooperating with the first positioning groove (702) to fix the inner conductor (60) and the first insulator (70); The inner conductor (60) comprises a first pin (601) for electrically connecting to a detection circuit and a second pin (602) for electrically connecting to a product; A first spring (603) is provided between the first pin (601) and the second pin (602); one end of the first spring (603) abuts against the first pin (601), and the other end abuts against the second pin (602).

2. The radio frequency test needle according to claim 1, characterized in that: The radio frequency test assembly further comprises a movable outer shell (80); one end of the movable outer shell (80) is movably sleeved in the second outer shell (50); A second spring (90) is provided between the movable outer shell (80) and the inner shell (30); the second spring (90) is provided in the second outer shell (50), one end of the second spring (90) abuts against an end surface of one end of the inner shell (30), and the other end of the second spring (90) abuts against an end surface of one end of the movable outer shell (80).

3. The radio frequency test needle according to claim 2, characterized in that: An extension portion (801) is provided at one end of the movable outer shell (80) extending toward the inner shell (30), and a deformation groove is provided on the extension portion (801); An inclined cavity (301) whose inner diameter gradually decreases in a direction away from the movable outer shell (80) is formed on the inner side of the end of the inner shell (30) close to the movable outer shell (80), and the extension portion (801) abuts against the wall surface of the inclined cavity (301).

4. The radio frequency test needle according to claim 2, characterized in that: A second insulating medium (100) and a third insulating medium (110) are provided between the inner conductor (60) and the movable outer shell (80); The second insulating medium (100) is provided with a second through hole (1001), and the third insulating medium (110) is provided with a third through hole (1101); the inner conductor (60) passes through the second through hole (1001) and the third through hole (1101); The movable outer shell (80) is provided with a second positioning groove at a position corresponding to the second insulating medium (100); and the movable outer shell (80) is provided with a third positioning groove at a position corresponding to the third insulating medium (110).

5. The radio frequency test needle according to claim 4, characterized in that: The movable outer shell (80) comprises a first movable combined shell (802), a second movable combined shell (803) and a third movable combined shell (804) which are arranged in sequence; One end of the first movable combined housing (802) passes through the second spring (90) and is movably inserted into the inner housing (30); The second movable combined shell (803) is sleeved outside an end of the first movable combined shell (802) away from the inner shell (30), and the second movable combined shell (803) and the first movable combined shell (802) are butted against each other to form the second positioning groove; The third movable combined shell (804) is sleeved outside an end of the second movable combined shell (803) away from the inner shell (30), and the third movable combined shell (804) and the second movable combined shell (803) are butt-jointed to form the third positioning groove.

6. The radio frequency test needle according to claim 4, characterized in that: The ratio of the aperture of the first through hole (701) to the outer diameter of the first insulator (70), the ratio of the aperture of the second through hole (1001) to the outer diameter of the second insulating medium (100), and the ratio of the aperture of the third through hole (1101) to the outer diameter of the third insulating medium (110) are all equal.

7. A radio frequency testing device, characterized in that: It comprises a connection socket and a radio frequency test needle as claimed in any one of claims 1 to 6; The connecting seat and the connecting flange (10) are fixedly connected.

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