Testing device and radio frequency detection system
By using a combination of connectors, RF cables, and abutments, the problem of cumbersome operation in connecting amplifier chips to RF detection devices is solved, achieving stable and accurate RF signal detection and reducing testing difficulty and cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-24
AI Technical Summary
Existing radio frequency testing devices are cumbersome and difficult to operate when connecting amplifier chips, posing a risk of chip damage, reducing testing efficiency and accuracy, and increasing testing costs.
The device employs a combination structure of connector, RF cable, and abutment, connecting the RF detection device to the target RF component via abutment. The RF cable has a shielding layer and a flexible abutment, achieving a stable connection at the grounding end and reducing soldering steps.
It improves the stability and accuracy of testing, reduces the difficulty and cost of testing, extends the lifespan of RF components, and reduces the impact of external interference on signals.
Smart Images
Figure CN224035567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radio frequency test equipment technology, and in particular to a test device and radio frequency detection system. Background Technology
[0002] In existing testing methods, the RF signal emitted by the amplifier chip is received through the port of an RF detection device to test the amplifier chip's performance. The performance testing of the amplifier chip requires verifying the normal performance of each stage of the module, which necessitates connecting the port of the RF detection device to the amplifier chip's output.
[0003] However, existing connection methods are cumbersome, difficult to operate, and reduce testing efficiency. Even worse, they pose a risk of damaging the amplifier chip and its output, significantly increasing testing costs and reducing testing accuracy and effectiveness. Utility Model Content
[0004] In view of the shortcomings of the above-mentioned related technologies, this application provides a testing device and an radio frequency detection system to solve the above-mentioned technical problems.
[0005] This application provides a testing device for testing the radio frequency performance of a target radio frequency device. The testing device includes a connector, a radio frequency line, and a contact member. The connector is adapted to be connected to a radio frequency detection device. One end of the radio frequency line is electrically connected to the connector, and the other end is abutted against the output terminal of the target radio frequency device. The radio frequency line is provided with a shielding layer connected to the connector. The contact member is electrically connected to the shielding layer. When the radio frequency line abuts against the output terminal, the contact member can abut against the ground terminal of the target radio frequency device.
[0006] In one embodiment of this application, the radio frequency line further includes a core wire, the connector includes a housing and an inner conductor disposed within the housing, the shielding layer is electrically connected to the housing and insulated from the core wire, one end of the core wire is electrically connected to the inner conductor, and the other end extends out of the shielding layer to abut against the output terminal.
[0007] In one embodiment of this application, the abutment includes a connecting portion and an extension portion. The connecting portion is connected to the shielding layer, and one end of the extension portion is connected to the connecting portion, while the other end extends in a direction away from the axis of the radio frequency line.
[0008] In one embodiment of this application, the connecting portion has a multi-turn structure and is wound around the outside of the shielding layer along the axial direction of the radio frequency line.
[0009] In one embodiment of this application, the abutting member is an elastic member, and the extension can be extended and retracted relative to the core wire so that the extension can elastically abut against the grounding terminal.
[0010] In one embodiment of this application, the connecting portion is slidably disposed on the shielding layer, and the connecting portion is slidably disposed relative to the shielding layer to adjust the relative position between the extension portion and the shielding layer.
[0011] In one embodiment of this application, the radio frequency line further includes an insulating layer, which is sleeved outside the core wire and disposed inside the shielding layer. The insulating layer extends outside the shielding layer, and the core wire extends outside the insulating layer.
[0012] In one embodiment of this application, the testing device further includes an insulating sleeve, which is disposed outside the shielding layer and is slidable along the axial direction of the radio frequency line.
[0013] In one embodiment of this application, the connector is an ultra-miniature coaxial cable connector.
[0014] Secondly, this application provides a radio frequency (RF) testing system, which includes the aforementioned testing device and RF testing device, wherein the RF testing device is connected to a connector.
[0015] The technical solution adopted in this utility model achieves the following beneficial effects: the connector is electrically connected to the radio frequency (RF) detection device, and the RF cable abuts against the output terminal of the target RF component. The RF cable receives the RF signal emitted by the target RF component and transmits the RF signal to the RF detection device, which can acquire and detect the RF signal. When the RF cable abuts against the output terminal of the target RF component, the abutment can abut against the ground terminal of the target RF component. The ground terminal of the target RF component can be connected to the RF detection device through the abutment and the shielding layer. Good grounding can effectively reduce electromagnetic noise, improve the signal-to-noise ratio of the RF signal, and make the measurement results of the RF detection device more accurate and reliable. In addition, the shielding layer with good grounding can reduce the influence of external electromagnetic interference on the internal components of the RF cable, thereby reducing the impact of external interference on the RF signal.
[0016] During this period, the connection between the test device and the grounding and output terminals of the target RF device is abutted. The abutting setting can ensure electrical connection to improve test stability, while reducing the steps of soldering and disassembly, reducing test difficulty, improving test efficiency, avoiding damage and aging of the target RF device, extending the service life of the test device and the target RF device, reducing test costs, and improving test accuracy. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a testing apparatus shown in an exemplary embodiment of this application;
[0019] Figure 2 This is a schematic diagram illustrating the structure of a test apparatus, an RF detection apparatus, and a target RF device, as shown in an exemplary embodiment of this application.
[0020] Figure 3 This is a cross-sectional view of a testing apparatus shown in an exemplary embodiment of this application;
[0021] Figure 4 This is a schematic diagram of the structure of another testing device shown in an exemplary embodiment of this application;
[0022] Figure 5 This is a schematic diagram of the structure of an exemplary embodiment of the radio frequency detection system shown in this application.
[0023] In the diagram: 1. RF testing system; 100. Test device; 110. Connector; 111. Housing; 112. Inner conductor; 120. RF wire; 121. Shielding layer; 122. Core wire; 123. Insulation layer; 124. Insulation sleeve; 130. Abutment; 131. Connecting part; 132. Extension part; 200. RF testing device; 300. Target RF component. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0026] In existing technologies, soldering is typically used to attach an open wire to the output terminal of the test chip. After each test, the open wire needs to be removed and soldered to the next test location, repeating this process. Amplifier chip output terminals are tiny and require high precision in soldering, making the process difficult. The need for repeated soldering and disassembly significantly reduces testing efficiency. Furthermore, repeated disassembly can lead to damage and aging of the amplifier chip output terminal, thus reducing its lifespan. Simultaneously, the high temperatures and mechanical stress generated during soldering can easily damage or degrade the internal circuitry of the chip, or even directly destroy the chip, posing a significant challenge to the soldering operation.
[0027] This application provides a testing apparatus 100, please refer to... Figure 1 The testing apparatus 100 is used to test the radio frequency (RF) performance of the target RF device 300. The target RF device 300 can be a structure capable of releasing RF signals, such as an RF power amplifier chip, and is not limited thereto. Correspondingly, the RF performance of the target RF device 300 can include the power, frequency, and noise of the RF signal.
[0028] Please continue reading. Figure 1 The test device 100 may include a connector 110, an RF cable 120, and a contact 130. The connector 110 is connected to the RF cable 120, and the RF cable 120 is connected to the contact 130.
[0029] Please see Figure 2 The connector 110 is adapted to connect to the radio frequency (RF) detection device 200. Specifically, the connector 110 can be a miniature coaxial cable connector, such as a sub-miniature version A (SMA) connector, etc., without limitation. The connector 110 can be used in RF equipment and microwave circuits to transmit RF signals. The connector 110 is compatible with the RF detection device 200, that is, the RF detection device 200 is provided with a corresponding connector, and the connector 110 can be installed on the connector to enable the RF signal to be transmitted smoothly to the RF detection device 200.
[0030] It is understood that the RF testing device 200 can be an RF power meter, spectrum analyzer, phase noise meter, or integrated tester, and is not limited thereto. The RF testing device 200 can adaptively test the power, frequency, and noise of the target RF device 300.
[0031] Existing connectors are bulky, and may interfere with the connection between themselves and the target RF device. Please refer to the embodiments in this application for further details. Figure 1The testing device 100 is equipped with an RF cable 120. One end of the RF cable 120 is electrically connected to a connector 110, and the other end abuts against the output terminal of the target RF device 300. During this period, the end of the RF cable 120 abuts against the target RF device 300, and the RF signal emitted by the target RF device 300 can be directly transmitted into the RF cable 120. Furthermore, because the RF cable 120 uses abutment connection method, compared to soldering, the abutment setup is simpler and faster, avoids damage to the chip caused by the high temperature of soldering, and facilitates real-time adjustment.
[0032] Understandably, compared to the connector 110 directly connecting to the target RF device 300, the RF cable 120 can extend outwards. This arrangement eliminates interference from the connector 110's own size, ensuring that the target RF device 300 can stably transmit RF signals to the RF cable 120, and ultimately to the RF detection device 200. Furthermore, the RF cable 120 is smaller and longer than the connector 110. In addition, the RF cable 120 can be flexible, meaning it can be bent, allowing it to extend into confined spaces and increasing the usability of the test device 100.
[0033] Please continue reading. Figure 1 The RF cable 120 is provided with a shielding layer 121 connected to the connector 110. The shielding layer 121 can be a hollow cylinder. Further, the shielding layer 121 can be a metal braided mesh or a metal foil. The shielding layer 121 is disposed on the outer surface of the RF cable 120. The shielding layer 121 can shield external interference signals, preventing external interference signals from affecting the internal RF signal transmission of the RF cable 120, effectively improving the protection capability of the RF cable 120.
[0034] In existing technologies, the shielding layer can be connected to the ground terminal of the target RF device, which reduces external interference and simultaneously achieves ground connection, improving the detection performance of the RF testing device. However, existing technologies struggle to simultaneously address the connection between the ground terminal of the target RF device and the shielding layer, as well as the connection between the output terminal of the target RF device and the RF line, which can affect test accuracy and performance. Please refer to [link / reference]. Figure 1In this embodiment, the abutment member 130 is electrically connected to the shielding layer 121. When the RF line 120 abuts the output terminal, the abutment member 130 can abut the ground terminal of the target RF device 300. By adjusting the position between the abutment member 130 and the RF line 120, it can be adapted to different target RF devices 300. For example, different target RF devices 300 or circuit boards containing target RF devices 300 may have ground terminals and output terminals in different positions. By adjusting the orientation or length of the abutment member 130, it can be adapted to ground terminals and output terminals of different positions and models to achieve simultaneous abutment. Good grounding can effectively reduce electromagnetic noise, improve the signal-to-noise ratio of RF signals, and make the measurement results of the RF detection device 200 more accurate and reliable. At the same time, this can reduce the influence of external electromagnetic interference on RF signals.
[0035] In addition, during this period, the connection between the ground terminal and the output terminal of the test device 100 and the target RF device 300 is abutted. The abutting setting can ensure electrical connection to improve test stability, while reducing the steps of welding and disassembly, and also avoid damage and aging of the target RF device 300, thereby improving the service life of the test device and the target RF device 300.
[0036] Understandably, in existing technologies, only the grounding terminal and the radio frequency detection device are connected. However, interference signals often exist in the environment, and external interference signals may affect internal components, thereby interfering with the normal transmission of radio frequency signals, resulting in low detection accuracy. In this embodiment, the shielding layer 121 can transmit the grounding signal while also providing protection. A well-grounded shielding layer 121 can reduce the impact of external electromagnetic interference on the internal components of the radio frequency line 120, thereby reducing the influence of external interference signals on the radio frequency signal.
[0037] In a more specific implementation, please refer to Figure 1 as well as Figure 3The RF line 120 may also include a core wire 122, which can be copper or silver wire, etc., without limitation. The core wire 122 can be located within the shielding layer 121, which can improve the protection capability of the core wire 122, and the RF signal of the target RF device 300 can be stably transmitted through the core wire 122. The shielding layer 121 is electrically connected to the housing 111 and is insulated from the core wire 122. One end of the core wire 122 is electrically connected to the inner conductor 112, and the other end extends out of the shielding layer 121 to abut the output terminal of the target RF device 300. The connector 110 may include the housing 111 and the inner conductor 112. The inner conductor 112 is disposed within the housing 111 and can transmit the RF signal in the core wire 122 to the RF detection device 200. The housing 111 can be connected to the radio frequency detection device 200. The grounding terminal of the target radio frequency component 300 can be connected to the radio frequency detection device 200 through the shielding layer 121 and the housing 111 to realize the connection between the grounding terminal and the radio frequency detection device 200. This can effectively reduce electromagnetic noise, improve the signal-to-noise ratio of radio frequency signals, and improve protection capabilities.
[0038] For further details, please refer to Figure 1 The abutment 130 may include a connecting portion 131 and an extension portion 132. The connecting portion 131 connects to the shielding layer 121, and the connection method between the connecting portion 131 and the shielding layer 121 may include welding, crimping, riveting, etc., and is not limited thereto. Taking welding as an example, the metal connecting portion 131 and the metal material of the shielding layer 121 are fused together by high temperature to form a strong electrical connection. One end of the extension portion 132 is connected to the connecting portion 131, and the other end extends in a direction away from the axis of the RF line 120 to change the relative position between the core wire 122 and the extension portion 132. Furthermore, the extension direction of the extension portion 132 may be perpendicular to or intersect with the axis of the RF line 120, and is not limited thereto. The extension portion 132 extends out from the connecting portion 131, and its extension direction forms an angle with the central axis of the RF line 120. For example, the extension angle of the extension portion 132, relative to the axial direction of the RF line 120, ranges from 0 to 90°, such as 0, 45°, or 90°. The extension length of the extension portion 132 can be flexibly adjusted within the range of 5mm to 20mm, such as 5mm, 10mm, or 20mm, and is not limited here. This setting can change the positional relationship between the core wire 122 and the extension portion 132. For example, in a high-density wiring RF module, the extension portion 132 can reduce the risk of signal crosstalk by avoiding other components on the circuit board. The extension distance and relative extension angle of the extension portion 132 need to be set according to the actual circuit board structure, installation space, and grounding requirements to improve test stability and connection effect.
[0039] In a more specific implementation, please refer to [link / reference needed]. Figure 1The connecting portion 131 can be a multi-turn structure; in other words, the number of turns in the connecting portion 131 can be multiple, such as 2 turns, 3 turns, or even more, which will not be elaborated further. Along the axial direction of the RF line 120, the connecting portion 131 is wound around the outside of the shielding layer 121. In other words, the multi-turn connecting portion 131 is tightly wound in a spiral manner along the axial direction of the RF line 120 onto the outer surface of the shielding layer 121. This allows the connecting portion 131 to adapt to shielding layers 121 of different sizes. That is, according to different specifications of shielding layers 121, the inner diameter of the connecting portion 131 can be adjusted, which allows the connecting portion 131 to adapt to different RF lines 120, thereby improving assembly efficiency and adaptability. Subsequently, the shielding layer 121 and the connecting portion 131 are connected by welding or other methods. At the same time, each turn of the connecting portion 131 can maintain continuous metal contact between the connecting portion 131 and the shielding layer 121, improving the stability of the electrical connection. In other words, this arrangement expands the contact interface between the connector 131 and the shielding layer 121 from a single plane to a three-dimensional contact area with multiple overlapping turns. Since each turn forms an independent welding point, the welding heat distribution is more uniform, reducing the risk of damage to the shielding layer 121 due to localized overheating. Furthermore, the larger welding area also reduces welding difficulty, improves welding quality, and ensures a stable connection between the connector 131 and the shielding layer 121.
[0040] The connecting portion 131 can be an elastic element, made of a metal or alloy with elasticity, such as copper alloy, spring steel, or stainless steel, without limitation. Furthermore, the multi-turn connecting portion 131 can axially contract or extend, and the inter-turn gap will simultaneously decrease or increase; that is, the inter-turn distance decreases and the structure contracts when compressed; after the external force is released, it returns to its original shape due to the elasticity of the material. Even further, a portion of the connecting portion 131 is connected to the shielding wire, with at least one or more turns capable of mutual contraction or extension. The extension portion 132 can be telescopically arranged relative to the core wire 122 so that the extension portion 132 can elastically abut against the grounding terminal. When the connecting portion 131 contracts, its axial length shortens, causing the connected extension portion 132 to telescopically extend and retract synchronously. Simultaneously, the elastic force of the connecting portion 131 is applied to the abutment surface between the extension portion 132 and the grounding terminal of the target RF component 300, and the elastic force creates a preload between the extension portion 132 and the grounding terminal of the target RF component 300, ensuring a stable connection. It can be seen that the multi-turn connection part 131 can both increase the contact area between the abutment 130 and the shielding layer 121, which is convenient for welding, and also ensure that the extension part 132 and the grounding terminal of the target radio frequency component 300 are stably abutted, thereby improving the test accuracy.
[0041] In this embodiment, the connecting portion 131 is slidably disposed on the shielding layer 121. Furthermore, the connecting portion 131 can both slide on the shielding layer 121 and be electrically connected to it. For example, a guide groove is provided on the inner side of the connecting portion 131, and the guide groove engages with a raised slide rail on the outer side of the shielding layer 121, allowing the connecting portion 131 to slide on the shielding layer 121. The method of sliding is not limited. When the connecting portion 131 is slidably disposed relative to the shielding layer 121, the relative position between the extension portion 132 and the shielding layer 121 can be adjusted. An operator can adjust the end position of the extension portion 132 by pushing the connecting portion 131 to slide on the shielding layer 121. For example, in the initial state, the end of the extension 132 is flush with the end of the core wire 122. By pushing the connection 131 to slide on the shielding layer 121, the end of the extension 132 extends out to a position 10mm away from the end of the core wire 122. While the core wire 122 is connected to the output terminal of the target RF device 300, this setting ensures that the extension 132 can be stably connected to the ground terminal of the target RF device 300, thereby adapting to different circuit boards and target RF devices 300.
[0042] In addition, the surface of the shielding layer 121 is provided with a recess, which can be a groove, and the multi-turn connecting part 131 can cooperate with the recess. That is, the connecting part 131 and the shielding layer 121 can be an interference fit. When each turn slides to the recess, the interference fit will be released, and the resistance between the two will decrease, so as to remind the user to slide to the designated position. Furthermore, the spacing between adjacent turns is the same, that is, the user can know the specific position of the connecting part 131 by the number of times the feel changes, and thus know the relative positional relationship between the extension part 132 and the core wire 122.
[0043] Preferably, please refer to Figure 4 The testing device 100 may further include an insulating sleeve 124, which may be a hollow tubular structure. The insulating sleeve 124 may be a polytetrafluoroethylene sleeve, a polyethylene sleeve, or a polypropylene sleeve, etc., and is not limited thereto. The insulating sleeve 124 is fitted over the shielding layer 121 and can slide along the axial direction of the radio frequency line 120, ensuring that it can both tightly wrap the shielding layer 121 and allow the shielding layer 121 to slide axially relative to the radio frequency line 120. The insulating sleeve 124 maintains at least partial coverage of the shielding layer 121, preventing static electricity from the human body or external electromagnetic interference from directly affecting the shielding layer 121, effectively ensuring the integrity of radio frequency signal transmission.
[0044] Understandably, when the test device 100 needs to be operated in a confined space, the operator can adjust its position by sliding the insulating sleeve 124 to avoid the insulating sleeve 124 interfering with the sliding setting of the connecting part 131. This allows the connecting part 131 to move to a designated position while also making it easier for the operator to hold the insulating sleeve 124 and hold the radio frequency cable 120 in different positions to adjust or stabilize the current position of the test device 100, thereby improving the stability of the operator's use.
[0045] In the embodiments of this application, please refer to Figure 3 The radio frequency (RF) cable 120 may also include an insulating layer 123, which may be a polytetrafluoroethylene (PTFE) layer, a polyethylene (PE) layer, or a polypropylene (PP) layer, and is not limited thereto. The insulating layer 123 is sleeved around the core wire 122 and disposed within the shielding layer 121. The insulating layer 123 extends outside the shielding layer 121, and the core wire 122 extends outside the insulating layer 123. The insulating layer 123 prevents the RF signal transmitted by the core wire 122 from leaking into the shielding layer 121, and also prevents external electromagnetic interference from affecting the RF signal within the core wire 122 through the shielding layer 121, reducing signal attenuation and distortion, and ensuring the integrity and stability of signal transmission.
[0046] To achieve the above and other related objectives, this application provides an radio frequency detection system 1. Please refer to [link to relevant documentation]. Figure 5 The radio frequency (RF) testing system 1 includes the aforementioned test device 100 and RF testing device 200, with the RF testing device 200 connected to the connector 110. This gives the RF testing system 1 the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here. The RF testing device 200 can be an RF power meter, a spectrum analyzer, a phase noise meter, or a comprehensive tester; there are no limitations on this.
[0047] The technical solution adopted in this utility model can achieve the following beneficial effects: the connector 110 is electrically connected to the radio frequency detection device 200, and the radio frequency line 120 abuts against the output terminal of the target radio frequency component 300. The radio frequency line 120 receives the radio frequency signal emitted by the target radio frequency component 300 and transmits the radio frequency signal to the radio frequency detection device 200, which can acquire and detect the radio frequency signal. When the radio frequency line 120 abuts against the output terminal of the target radio frequency component 300, the abutment 130 can abut against the ground terminal of the target radio frequency component 300. The ground terminal of the target radio frequency component 300 can be connected to the radio frequency detection device 200 through the abutment 130 and the shielding layer 121. Good grounding can effectively reduce electromagnetic noise, improve the signal-to-noise ratio of the radio frequency signal, and make the measurement results of the radio frequency detection device 200 more accurate and reliable. In addition, the shielding layer 121 with good grounding can reduce the influence of external electromagnetic interference on the internal components of the radio frequency line 120, thereby reducing the impact on the radio frequency signal.
[0048] During this period, the connection between the grounding terminal and the output terminal of the test device 100 and the target RF component 300 is abutted. The abutting setting can ensure electrical connection to improve test stability, while reducing the steps of welding and disassembly, reducing test difficulty, improving test efficiency, avoiding damage and aging of the target RF component 300, increasing the service life of the test device and the target RF component 300, reducing test costs, and improving test accuracy.
[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0050] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0051] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A testing apparatus for testing the radio frequency performance of a target radio frequency device, characterized in that, The testing apparatus includes: A connector adapted to be connected to a radio frequency detection device; An RF cable, one end of which is electrically connected to the connector, and the other end which abuts against the output terminal of the target RF device; the RF cable is provided with a shielding layer connected to the connector; and The abutment is electrically connected to the shielding layer, and when the radio frequency line abuts the output terminal, the abutment can abut the ground terminal of the target radio frequency device.
2. The testing apparatus according to claim 1, characterized in that, The radio frequency line also includes a core wire. The connector includes a housing and an inner conductor disposed within the housing. The shielding layer is electrically connected to the housing and insulated from the core wire. One end of the core wire is electrically connected to the inner conductor, and the other end extends out of the shielding layer to abut against the output terminal.
3. The testing apparatus according to claim 2, characterized in that, The abutment includes a connecting portion and an extension portion. The connecting portion is connected to the shielding layer, and one end of the extension portion is connected to the connecting portion, while the other end extends in a direction away from the axis of the radio frequency line.
4. The testing apparatus according to claim 3, characterized in that, The connecting part has a multi-turn structure. Along the axial direction of the radio frequency line, the connection portion is wound around the outside of the shielding layer.
5. The testing apparatus according to claim 4, characterized in that, The connecting part is an elastic element, and the extension part can be axially extended and retracted relative to the core wire so that the extension part can elastically abut against the grounding terminal.
6. The testing apparatus according to claim 3, characterized in that, The connecting portion is slidably disposed on the shielding layer, and the connecting portion is slidably disposed relative to the shielding layer to adjust the relative position between the extension portion and the shielding layer.
7. The testing apparatus according to claim 2, characterized in that, The radio frequency line also includes an insulating layer, which is sleeved outside the core wire and disposed inside the shielding layer. The insulating layer extends outside the shielding layer, and the core wire extends outside the insulating layer.
8. The testing apparatus according to claim 1, characterized in that, The testing device also includes an insulating sleeve, which is fitted over the shielding layer and is slidable along the axial direction of the radio frequency line.
9. The testing apparatus according to claim 1, characterized in that, The connector is an ultra-miniature coaxial cable connector.
10. A radio frequency detection system, characterized in that, include: The testing apparatus and the radio frequency detection apparatus as described in any one of claims 1-9, wherein the radio frequency detection apparatus is connected to the connector.