Radio frequency assembly test fixture
By designing a RF component test fixture including a fixed plate, RF connector, slide rail guide, sliding stop and spring, the problem of difficulty in RF component testing in the prior art is to take into account accuracy, flexibility and component protection, and a more efficient and accurate RF component testing is achieved.
Patent Information
- Application Number
- CN202421905046.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Existing RF component testing methods are difficult to take into account test accuracy, flexibility and component appearance protection. Especially when using RF insulator pins such as SMA and SMP as packaged structures as input and output ports, testing is more difficult.
A RF component testing fixture is designed, including a first fixing plate, a second fixing plate, a radio frequency connector, a slide rail guide rod, a sliding stop and a spring. Through the cooperation of these components, the stable placement and precise alignment and insertion of the RF component are achieved, avoiding the cumbersomeness of manual insertion and removal and damage to the component appearance.
Improves the accuracy and efficiency of RF component testing, ensures stable assembly and precise alignment and insertion of components, avoids component appearance damage, and simplifies the testing process.
Smart Images
Figure CN223022197U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of test fixtures for electronic communication devices, and particularly to a test fixture for radio frequency components. Background Art
[0002] A radio frequency component is a passive component used in wireless communication and radio frequency electronic devices. The role of the radio frequency component is to transmit signals near the center frequency to the next circuit. Its characteristics include low power consumption, low distortion, and high bandwidth within the operating frequency range. The radio frequency component is an important part of radio frequency electronic devices and has a wide range of applications in fields such as mobile communication, satellite communication, and radar.
[0003] The purpose of radio frequency component testing is to ensure that the performance of the radio frequency component meets the requirements. The test contents include the transmission power test, reception sensitivity test, frequency response test, modulation test, and noise ratio test of the radio frequency component, etc. Because the appearance dimensions of radio frequency components vary greatly, their test methods and fixtures are also different. A good test fixture can not only ensure the accuracy of test indicators, but also greatly improve the test efficiency and simplify the test process.
[0004] Among various radio frequency components, the encapsulation structure test using radio frequency insulators such as SMA and SMP as input and output port pins is relatively difficult. It is necessary to ensure sufficient contact between the test cable and the output port pin, and at the same time ensure the integrity of the pin appearance during the test to avoid damage. Currently, when testing this type of component, the signal transmission is mostly completed by manually plugging and unplugging a radio frequency connector with a test cable, or a radio frequency connector is assembled on the radio frequency component housing by opening mounting threaded holes on the housing to complete the component test. This type of radio frequency test method often has difficulty in taking into account the test accuracy, flexibility, and component appearance protection requirements. Summary of the Invention
[0005] In order to solve the accuracy of various index tests of radio frequency chips, improve the efficiency of test operations, and avoid the problem of component appearance damage during the test, the present invention proposes a test fixture for radio frequency components, which includes a base plate provided with a first fixed plate and a second fixed plate. A radio frequency connector is installed on the outside of the first fixed plate. A test hole for installing a radio frequency connector of the test radio frequency component is provided on the outside of the first fixed plate. Two parallel slide rails and guide rods are provided between the first fixed plate and the second fixed plate. A sliding block that can move on the slide rails and guide rods is installed on the slide rails and guide rods. A spring is provided between the sliding block and the first fixed plate, and the sliding block can be fixed on the slide rails and guide rods by tightening screws; a radio frequency connector mounting hole is provided on the outside of the sliding block. A strip-shaped card slot is provided on the base plate. The radio frequency component to be tested is placed between the first fixed plate and the sliding block for the electrical performance test of the radio frequency component.
[0006] Furthermore, the base plate is made of 45# steel, 40Cr stainless steel or hard aluminum alloy.
[0007] Furthermore, when the RF component is tested, the length of the spring when it is in free length is smaller than the length of the RF component to be tested. The RF component to be tested is placed in the bar slot, and the spring is in a stretched state. The rebound force of the spring pushes the pins at both ends of the RF component to be tested into the connecting holes of the RF connector on the first fixed plate and the sliding block.
[0008] Furthermore, a tightening screw installation through hole is provided on the sliding stopper, and the tightening screw is screwed into the sliding stopper, and the end of the tightening screw is in close contact with the guide rod of the slide rail to lock the sliding stopper.
[0009] Furthermore, the sliding guide rail is cylindrical, and the position matching with the tightening screw is processed into a four-sided column shape so that the tightening screw can fully contact.
[0010] Furthermore, the depth of the strip-shaped slot is 2 mm to 3 mm.
[0011] Furthermore, the width of the strip-shaped card slot is equal to the outer shape of the radio frequency component to be tested.
[0012] Compared with the traditional testing method, the present invention has the following advantages:
[0013] 1. Different from manually plugging and unplugging the test connector or opening a connector installation slot on the RF component housing, this solution can ensure the stable placement of the tested RF component and the precise alignment and insertion with the RF connector through the design of the test fixture. The present invention provides a RF component test fixture that is simple to operate, flexible, can stably clamp, and will not damage the appearance of the component. It solves the problems of inaccurate index testing, easy damage to the component appearance, and low test efficiency in the electrical performance test fixture of the pin-type RF component.
[0014] 2. The shallow groove on the test base plate is set according to the shape of the RF component, which ensures the X-direction limitation of the RF component on the plate, avoids left and right displacement during testing, and ensures the axial alignment of the RF pin.
[0015] 3. The sliding rail mainly supports and fastens the mobile RF connector. Pull the sliding block along the guide rod of the sliding rail, and place the RF component to be tested in the shallow groove of the test base. After letting go, the sliding block will clamp the component to be tested under the traction of the spring, and align the left and right RF pins and insert them into the RF connector to ensure signal transmission. If necessary, tighten the tightening screws so that the tightening screws are against the guide rod of the sliding rail to fix the sliding block and ensure long-term stability index testing, such as power-on aging, power testing and other projects. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of a test fixture structure for a radio frequency component according to the present invention;
[0017] Among them, 1. Base plate; 11. First fixing plate; 12. Second fixing plate; 13. Radio frequency connector; 14. Connection hole; 15. Strip-shaped card slot; 2. Slide rail guide rod; 21. Spring; 3. Sliding block; 31. Tightening screw. Specific embodiments
[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0019] The present invention proposes a test fixture for a radio frequency component, as Figure 1 , including a base plate 1 provided with a first fixing plate 11 and a second fixing plate 12. A radio frequency connector 13 is installed outside the first fixing plate. A connection hole 14 for installing a radio frequency connector of the test radio frequency component is provided outside the first fixing plate. Two parallel slide rail guide rods 2 are provided between the first fixing plate and the second fixing plate. A sliding block 3 that can move on the slide rail guide rod is installed on the slide rail guide rod. A spring 21 is provided between the sliding block and the first fixing plate, and the sliding block can be fixed on the slide rail guide rod through a tightening screw 31; a radio frequency connector installation hole is provided outside the sliding block. A strip-shaped card slot 15 for the radio frequency component is provided on the base plate. The radio frequency component to be tested is placed between the first fixing plate and the sliding block for electrical performance testing of the radio frequency component.
[0020] In this embodiment, the overall shape of the base plate provided with the first fixing plate and the second fixing plate is U-shaped. The protruding parts on the left and right sides, that is, the first fixing plate and the second fixing plate, are used to install and fix the sliding guide rails. The surface of the base plate is provided with a radio frequency component fixing card slot with the same width as the outer shape of the tested radio frequency component, and the slot depth can be 2-3 mm, which is used for positioning the component in the width direction during testing.
[0021] In this embodiment, the width of the groove formed on the surface of the base plate is equal to the width of the RF component to be detected, such that the RF component to be detected can only move along the direction of the slide rail guide rod. During actual use, the length of the spring can be replaced according to the length of the RF component to be detected along the direction of the slide rail guide rod, such that the length of the RF component to be detected along the direction of the slide rail guide rod is longer than the length of the spring in its free state. In this way, during use, it is only necessary to stretch the spring, install the pins at one end of the RF component to be detected through the connection holes on the first fixing plate, and place the RF component to be detected completely within the groove formed on the surface of the base plate, and then release the spring. Under the elastic force of the spring, the sliding block can clamp the RF component to be detected. Additionally, if long-term fixation is required, screw holes can be formed on the sliding block, and the sliding block can be fixed to the slide rail guide rod by tightening the screws. The positions on the slide rail guide rod where the screws can be tightened are provided as tetrahedrons to increase the acting force between the bottom surface of the tightened screw and the sliding guide rod, enhancing the fixing effect.
[0022] The RF connector is the connection point between the RF component and the test instrument and cable, which is a conventional product sold on the market and is selected according to the pins of the output port of the RF component. The RF connectors are respectively fixed on the convex platform of the test base and the sliding block, and should be able to ensure matching alignment with the pins on the RF component limited on the base.
[0023] The slide rail guide rod is used to support the sliding block and the spring to ensure the insertion connection between the axial end output pins of the RF component and the RF connector. It is itself installed and fixed to the protrusions at both ends of the test base through threads. To ensure the sliding and fixing of the sliding block, in this embodiment, the movable area of the sliding block on the slide guide rod should be made into a four-corner square shape, such that when the screw is tightened, it can be flat against the slide rail guide rod to lock the sliding block.
[0024] This embodiment also provides a method for using the RF component test fixture, which specifically includes the following steps:
[0025] During testing, pull the sliding block along the slide guide rod and place the RF component in.
[0026] In the base guide groove, the spring will automatically tighten, pushing the RF component to move in the guide groove. The left and right ends of the RF component will automatically align, and the pins at both ends will be inserted into the test holes of the RF connectors on both sides to achieve testing.
[0027] During the use of the device of the present invention, the cumbersome process of manually aligning the pins of the RF components frequently is avoided, and the spring can automatically tighten, avoiding problems such as the component slipping off or poor contact during the test. In addition, for long-term similar processes such as power-on or test during experiments, the fastening screws further strengthen the fixing effect, which has good practical significance. In this embodiment, the test connector is installed on the two side blocks by screws, and those skilled in the art can also replace and adjust it according to the input and output ports of the component. For example, the test port can be replaced with an interface such as Type-C.
[0028] During the test of the RF components in the prior art, the staff needs to manually align the pins. In addition, in order to fix the RF components to be tested, holes for fixing need to be opened on the housing of the RF components to be tested, and the staff needs to install RF connectors on the RF components to be tested through the holes. This not only tests the precision of the staff's operation, but also affects the sealing performance of the device by opening holes on the housing, thus affecting the test results. Therefore, in the solution of the present invention, through the mutual cooperation among the spring, the sliding block and the RF component fixing slot, the problem of difficult pin alignment can be solved. The staff only needs to place the RF component in the strip-shaped slot, and it can be automatically aligned under the action of the spring, and the lead pin is inserted into the test hole of the RF connector, reducing the requirement for the precision of the staff's operation. When designing the strip-shaped slot, it needs to match the size of the RF component to be tested to ensure that the RF component to be detected can be limited, and the position of the RF component and the test port also needs to be corresponding to ensure that when the RF component moves in the strip-shaped slot, it can be automatically connected to the test port under the action of the elastic force.
[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "outer", "front part", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 to the present invention.
[0030] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "setting", "connection", "fixation", "rotation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A radio frequency component test fixture, characterized in that: It includes a base plate provided with a first fixed plate and a second fixed plate, a radio frequency connector is installed on the outer side of the first fixed plate, a test hole for installing and testing the radio frequency connector of the radio frequency component is provided on the outer side of the first fixed plate, two parallel slide rail guide rods are provided between the first fixed plate and the second fixed plate, a sliding block that can move on the slide rail guide rod is installed on the slide rail guide rod, a spring is provided between the sliding block and the first fixed plate, and the sliding block can be fixed to the slide rail guide rod by tightening screws; a radio frequency connector installation hole is provided on the outer side of the sliding block, and a radio frequency component bar slot is provided on the base plate, the radio frequency component to be tested is placed between the first fixed plate and the sliding block, and the electrical performance test of the radio frequency component is carried out.
2. The RF component test fixture according to claim 1, characterized in that: The base plate is made of 45# steel, 40Cr stainless steel or hard aluminum alloy.
3. The RF component test fixture according to claim 1, characterized in that: When testing the RF component, the length of the spring when it is at free length is smaller than the length of the RF component to be tested. The RF component to be tested is placed in the bar slot of the base. The spring is in a stretched state. The rebound force of the spring pushes the pins at both ends of the RF component to be tested into the RF connector test holes on the first fixed plate and the sliding block.
4. A radio frequency component test fixture according to claim 1 or 3, characterized in that: The sliding stopper is provided with a tightening screw installation through hole. The tightening screw is screwed into the sliding stopper, and the end of the tightening screw is in close contact with the guide rod of the slide rail to lock the sliding stopper.
5. The RF component test fixture according to claim 4, characterized in that: The sliding guide rail is cylindrical, and the position matching with the tightening screw is processed into a four-sided column shape to ensure full contact of the tightening screw.
6. The RF component test fixture according to claim 1, characterized in that: The depth of the RF component fixing slot is 2mm to 3mm.
7. A radio frequency component test fixture according to claim 1 or 6, characterized in that: The strip-shaped card slot for placing the radio frequency component to be tested has the same width as the outer shape of the radio frequency component to be tested.