An elastic radio frequency coaxial cable test device

Abstract

The present invention provides an elastic RF coaxial line test device, including a test assembly, wherein the test assembly includes a connector cavity, a coaxial line mounting plate, a connecting plate, a coaxial reinforcement copper sleeve, a first spring, a coaxial initial position pressure plate, a cover plate, and a clamping plate; the coaxial line mounting plate is welded to the middle of the upper surface of the connector cavity, the connecting plate is connected to the inside of the coaxial line mounting plate by screws, the lower surface of the connecting plate is evenly provided with through grooves, and the inside of the through grooves is provided with RF cables. The present invention closes the cover plate, and the second spring pushes the clamping plate to press the chip. By welding the coaxial reinforcement copper sleeve to the outside of the RF cable and installing the first spring on the outside of the coaxial reinforcement copper sleeve, the coaxial center conductor is made elastic and can directly contact the chip test point. Compared with the traditional test through switching, the effective transmission of the RF signal is guaranteed, and the performance is more superior and stable.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency coaxial lines, in particular to a flexible radio frequency coaxial line testing device. Background Art

[0002] Due to the development of highly integrated technology and the strict requirements of aerospace equipment on volume and weight, highly integrated RF circuits are widely used due to their small size and light weight. The original modular RF transceiver components or RF devices such as multi-channel amplifiers and phase shifters are packaged into BGA chips through semiconductor technology. This has obvious advantages in terms of size and cost of use. It greatly reduces the size and weight of the entire equipment, while also reducing the power consumption and reliability of the entire equipment. It can also reduce many process assembly steps and is the current mainstream development of RF components. There are currently two main forms: the first is a standard array package, which looks basically the same as the common BGA chips on the market, but the array balls contain RF signal transmission points; the second is a custom silicon-based BGA package, in which designers define the signal connection points according to the product function or end-customer needs. This package has no regularity in terms of ball spacing and ball size, and the frequency is very high. Common chips can reach 67GHz.

[0003] Currently, conventional chip product testing is performed using a probe device, which is made of ordinary spring needles. Since ordinary test devices can be used as long as the signal is turned on, they cannot take into account important RF indicators (high frequency, 50Ω impedance, and transmission standing wave). As a result, RF performance is very poor and only electrical performance can be evaluated. Furthermore, the design does not consider RF characteristics, resulting in the following shortcomings:

[0004] 1. The RF microwave index matching cannot be achieved, and the measured standing wave is very poor;

[0005] 2. The test loss is large and the gain output is abnormal;

[0006] 3. Cause the product to self-excite and burn out;

[0007] 4. The test waveform resonates, affecting product performance evaluation;

[0008] 5. Unable to perform high-frequency RF signal testing and evaluation normally.

[0009] Therefore, a flexible radio frequency coaxial line testing device is proposed. Summary of the Invention

[0010] In view of this, the present invention hopes to provide a flexible radio frequency coaxial line testing device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0011] The technical solution of the embodiment of the present invention is realized as follows: An elastic radio frequency coaxial cable testing device includes a testing component, and the testing component includes a connector cavity, a coaxial cable mounting plate, a connecting plate, a coaxial reinforcement copper sleeve, a first spring, a coaxial initial position pressing plate, a cover plate, and a pressing plate;

[0012] The coaxial cable mounting plate is welded to the middle of the upper surface of the connector cavity. The connecting plate is connected to the inside of the coaxial cable mounting plate by screws. Through grooves are evenly formed on the lower surface of the connecting plate, and a radio frequency cable is arranged inside the through grooves. The inner side wall of the coaxial reinforcement copper sleeve is welded to the outer side wall of the radio frequency cable. Both ends of the first spring are welded to the adjacent sides of the coaxial reinforcement copper sleeve and the connecting plate. The coaxial initial position pressing plate is arranged inside the coaxial cable mounting plate. A through hole corresponding to the size of the coaxial reinforcement copper sleeve is formed on the upper surface of the coaxial initial position pressing plate. The rear side of the lower surface of the cover plate is hinged to the rear side of the upper surface of the coaxial cable mounting plate. Second springs are evenly welded to the lower surface of the cover plate, and the upper surface of the pressing plate is adhered to the bottom ends of the second springs.

[0013] As a further preference of this technical solution: The testing component further includes a mounting bottom plate, a connector, a connecting seat, and a positioning seat. The connector is arranged at one end of the radio frequency cable away from the connecting plate.

[0014] As a further preference of this technical solution: The inner side wall of the connecting seat is fixedly connected to the outer side wall of the connector. The connector and the connector cavity are connected by screws.

[0015] As a further preference of this technical solution: The upper surface of the mounting bottom plate is welded to the lower surface of the connector cavity.

[0016] As a further preference of this technical solution: The outer side wall of the positioning seat is fixedly connected to the top of the inner side wall of the coaxial cable mounting plate.

[0017] As a further preference of this technical solution: A positioning groove is formed on the upper surface of the positioning seat.

[0018] As a further preference of this technical solution: A locking component is installed on the front surface of the cover plate. The locking component includes an elastic plate and a hanging plate. The rear surface of the elastic plate is adhered to the front surface of the cover plate. Two locking hooks are symmetrically arranged at the bottom of the rear surface of the cover plate.

[0019] As a further preference of this technical solution: The hanging plate is fixedly connected to the front surface of the coaxial cable mounting plate.

[0020] Due to the adoption of the above technical solutions in the embodiment of the present invention, it has the following advantages:

[0021] 1. The present invention closes the cover, and the second spring pushes the pressing plate to press the chip. By welding a coaxial reinforced copper sleeve to the outside of the RF cable and installing a first spring on the outside of the coaxial reinforced copper sleeve, the coaxial center conductor has elasticity and can directly contact the chip test point. Compared with traditional testing through switching, this ensures the effective transmission of RF signals and has more superior and stable performance.

[0022] 2. The test frequency supported by this invention is 67GHz, and it can be used in environments as low as -55 degrees and as high as 150 degrees;

[0023] 3. No need for adapters reduces the difficulty of assembling the test device. The modular design of the test device improves versatility (accessories can be replaced individually and can be used in subsequent projects after disassembly) and maintainability.

[0024] 4. High production test efficiency. Just put the product on the test device for testing and remove the product after the test is completed.

[0025] 5. The testing cost is low, and the testing can be completed without welding, which reduces the intermediate process and saves manpower and material resources;

[0026] 6. Easy to use, no special debugging required; reduces labor intensity and skill requirements, as long as you can pick up and place the chip;

[0027] 7. The production can be expanded with automated equipment, laying the foundation for efficient production in the later stage.

[0028] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a left-side structural schematic diagram of the present invention;

[0031] Figure 2 It is a right side structural schematic diagram of the present invention;

[0032] Figure 3 This is a schematic diagram of the formal structure of the present invention;

[0033] Figure 4 In the present invention Figure 3 is an enlarged view of the structure of area A;

[0034] Figure 5 is a schematic structural diagram of the cover plate and the second spring in the present invention;

[0035] Figure 6 is a schematic structural diagram of the elastic plate and the locking hook in the present invention;

[0036] Figure 7 is a schematic structural diagram of some test components in the present invention.

[0037] Reference numerals: 10, test component; 11, mounting base plate; 12, connector cavity; 13, coaxial cable mounting plate; 14, connecting plate; 15, RF cable; 16, coaxial reinforcement copper sleeve; 17, first spring; 18, through groove; 19, joint; 110, connecting seat; 111, coaxial initial position pressing plate; 112, positioning seat; 113, positioning groove; 114, cover plate; 115, second spring; 116, pressing plate; 20, locking component; 21, elastic plate; 22, locking hook; 23, hanging plate. Detailed Description of the Invention

[0038] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0039] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0040] As Figures 1-7 shown, an embodiment of the present invention provides an elastic RF coaxial cable test device, including a test component 10, and the test component 10 includes a connector cavity 12, a coaxial cable mounting plate 13, a connecting plate 14, a coaxial reinforcement copper sleeve 16, a first spring 17, a coaxial initial position pressing plate 111, a cover plate 114 and a pressing plate 116;

[0041] The coaxial mounting plate 13 is welded to the middle of the upper surface of the connector cavity 12, and the connecting plate 14 is connected to the inside of the coaxial mounting plate 13 by screws. The lower surface of the connecting plate 14 is evenly provided with through grooves 18, and the inside of the through groove 18 is provided with a radio frequency cable 15. The inner wall of the coaxial reinforcement copper sleeve 16 is welded to the outer wall of the radio frequency cable 15, and the two ends of the first spring 17 are welded to the adjacent side of the coaxial reinforcement copper sleeve 16 and the connecting plate 14. The coaxial initial position pressure plate 111 is provided on the coaxial mounting plate 1 3, the upper surface of the coaxial initial position pressure plate 111 is provided with a through hole corresponding to the size of the coaxial reinforcement copper sleeve 16, the rear side of the lower surface of the cover plate 114 is hinged to the rear side of the upper surface of the coaxial mounting plate 13, the lower surface of the cover plate 114 is evenly welded with a second spring 115, and the upper surface of the pressure plate 116 is bonded to the bottom end of the second spring 115; after closing the cover plate 114, the second spring 115 pushes the pressure plate 116 to press the chip, and by welding the coaxial reinforcement copper sleeve 16 to the outside of the RF cable 15 The sleeve 16 is provided, and a first spring 17 is installed on the outside of the coaxial reinforced copper sleeve 16, so that the coaxial center conductor has elasticity and can directly contact the chip test point. Compared with the traditional test through adapter, the effective transmission of the radio frequency signal is guaranteed, and the performance is more superior and stable; the test frequency supported by the present invention is 67GHz, and it can be used in low temperature -55 degrees and high temperature 150 degrees; the need for adapter reduces the difficulty of assembling the test device, and the modular design of the test device has better versatility (accessories can be replaced separately, and can be used for subsequent projects after disassembly) and maintainability; the production test efficiency is high, as long as the product is placed on the test device for testing, and the product can be removed after the test is completed; the test cost is low, and the test can be realized without welding, reducing the intermediate process and saving manpower and material resources; it is easy to use and does not require special debugging; it reduces the labor intensity of personnel and reduces the skill requirements of personnel, as long as they can pick up and place chips; it can be expanded to carry out automated production, laying the foundation for efficient production in the later stage.

[0042] In one embodiment, the test assembly 10 further includes a mounting base 11 , a connector 19 , a connection seat 110 and a positioning seat 112 . The connector 19 is disposed at an end of the RF cable 15 away from the connection plate 14 .

[0043] In one embodiment, the inner side wall of the connection seat 110 is fixedly connected to the outer side wall of the connector 19 , and the connector 19 is connected to the connector cavity 12 via screws.

[0044] In one embodiment, the upper surface of the mounting base plate 11 is welded to the lower surface of the connector cavity 12 ; the mounting base plate 11 can provide support for the connector cavity 12 .

[0045] In one embodiment, the outer side wall of the positioning seat 112 is fixedly connected to the top of the inner side wall of the coaxial mounting plate 13 .

[0046] In one embodiment, a positioning groove 113 is formed on the upper surface of the positioning seat 112 to facilitate placement of chip products.

[0047] In one embodiment: a locking assembly 20 is installed on the front surface of the cover plate 114, and the locking assembly 20 includes an elastic plate 21 and a hanging plate 23. The rear surface of the elastic plate 21 is bonded to the front surface of the cover plate 114, and two locking hooks 22 are symmetrically provided at the bottom of the rear surface of the cover plate 114; with the help of the elastic properties of the elastic plate 21, the locking hooks 22 can move within a certain range.

[0048] In one embodiment, the hanging plate 23 is fixedly connected to the front surface of the coaxial mounting plate 13 ; after the cover 114 is closed, the locking hook 22 can hook the hanging plate 23 to prevent the cover 114 from loosening.

[0049] During operation, after the cover 114 is closed, the second spring 115 pushes the clamping plate 116 to press the chip. By welding a coaxial reinforced copper sleeve 16 to the outside of the RF cable 15 and installing a first spring 17 on the outside of the coaxial reinforced copper sleeve 16, the coaxial center conductor is made elastic and can directly contact the chip test point. Compared with traditional testing through adapters, this ensures effective transmission of RF signals and has superior and more stable performance. The present invention supports a test frequency of 67 GHz and can be used in environments as low as -55 degrees Celsius and as high as 150 degrees Celsius. The lack of adapters reduces the difficulty of assembling the test device, and the modular design improves versatility (accessories can be replaced individually and can be used in subsequent projects after disassembly) and maintainability. Production testing efficiency is high, as the product can be tested by simply placing it on the test device and then removed after testing is completed. Testing costs are low, as no welding is required to complete the test, reducing intermediate processes and saving manpower and material resources. It is easy to use and does not require special debugging. It reduces labor intensity and skill requirements for personnel, who only need to be able to pick and place chips. Automated equipment can be expanded for production, laying the foundation for efficient production in the future.

[0050] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications and substitutions within the technical scope disclosed in the present invention, and such modifications and substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A flexible radio frequency coaxial line test device, comprising a test assembly (10), characterized in that: The test assembly (10) includes a connector cavity (12), a coaxial cable mounting plate (13), a connecting plate (14), a coaxial reinforcement copper sleeve (16), a first spring (17), a coaxial initial position pressure plate (111), a cover plate (114) and a pressing plate (116); The coaxial mounting plate (13) is welded to the middle of the upper surface of the connector cavity (12), the connecting plate (14) is connected to the inside of the coaxial mounting plate (13) by screws, the lower surface of the connecting plate (14) is evenly provided with through grooves (18), the inside of the through grooves (18) is provided with a radio frequency cable (15), the inner side wall of the coaxial reinforcement copper sleeve (16) is welded to the outer side wall of the radio frequency cable (15), and the two ends of the first spring (17) are welded to the coaxial reinforcement copper sleeve (16) and the connecting plate. (14), the coaxial initial position pressure plate (111) is arranged inside the coaxial line mounting plate (13), the upper surface of the coaxial initial position pressure plate (111) is provided with a through hole corresponding to the size of the coaxial reinforcement copper sleeve (16), the rear side of the lower surface of the cover plate (114) is hinged to the rear side of the upper surface of the coaxial line mounting plate (13), the lower surface of the cover plate (114) is uniformly welded with a second spring (115), and the upper surface of the pressing plate (116) is bonded to the bottom end of the second spring (115).

2. The flexible RF coaxial line testing device according to claim 1, characterized in that: The test assembly (10) further includes a mounting base (11), a connector (19), a connection seat (110), and a positioning seat (112), wherein the connector (19) is provided at an end of the radio frequency cable (15) away from the connection plate (14).

3. The flexible RF coaxial line testing device according to claim 2, characterized in that: The inner side wall of the connecting seat (110) is fixedly connected to the outer side wall of the connector (19), and the connector (19) and the connector cavity (12) are connected via screws.

4. The flexible RF coaxial line testing device according to claim 2, characterized in that: The upper surface of the mounting base plate (11) is welded to the lower surface of the connector cavity (12).

5. The flexible RF coaxial line testing device according to claim 2, characterized in that: The outer side wall of the positioning seat (112) is fixedly connected to the top of the inner side wall of the coaxial line mounting plate (13).

6. The flexible RF coaxial line testing device according to claim 2, characterized in that: A positioning groove (113) is provided on the upper surface of the positioning seat (112).

7. The flexible RF coaxial line testing device according to claim 1, characterized in that: A locking assembly (20) is installed on the front surface of the cover plate (114), and the locking assembly (20) comprises an elastic plate (21) and a hanging plate (23). The rear surface of the elastic plate (21) is bonded to the front surface of the cover plate (114), and two locking hooks (22) are symmetrically provided at the bottom of the rear surface of the cover plate (114).

8. The flexible RF coaxial line testing device according to claim 7, characterized in that: The hanging plate (23) is fixedly connected to the front surface of the coaxial line mounting plate (13).

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