A surface acoustic wave device debugging and testing fixture

Abstract

This invention relates to the field of test fixture technology and discloses a surface acoustic wave (SAW) device debugging and testing fixture, comprising a test fixture body, a top cover mounted on the surface of the test fixture body, an air-guiding ring fixedly connected to the center of the bottom surface of the top cover, a fan fixedly connected to the center of the air-guiding ring, multiple exhaust holes corresponding to the fan positions on the center of the top cover surface, and multiple air inlets on both sides of the top cover surface. This SAW device debugging and testing fixture, by adding a top cover to the surface of the test fixture body and setting an air-guiding ring and fan in the center of the bottom surface of the top cover, constructs an active air-cooling heat dissipation system. Using this active air-cooling heat dissipation system, the temperature of the device can be quickly reduced during high-power testing, avoiding performance drift caused by local overheating, and making the test results closer to the actual performance under real-world operating conditions.

Description

Technical Field

[0001] This invention relates to the field of test fixture technology, specifically to a surface acoustic wave device debugging and testing fixture. Background Technology

[0002] Surface acoustic wave (SAW) devices utilize the characteristics of acoustic-to-electric transducers to process acoustic signals propagating on the surface of piezoelectric substrates and perform various functions in solid-state devices. They are fabricated using semiconductor planar technology to create interdigitated metal electrodes (called interdigital transducers, IDTs) on the surface of the piezoelectric substrate. Applying an alternating voltage to these electrodes excites surface acoustic waves (SAWs) on the substrate surface, allowing electrical signals to be transmitted. Testing is an indispensable part of the research, development, production, and application of SAW devices.

[0003] For example, patent CN203825116U discloses a surface acoustic wave (SAW) device debugging and testing fixture, including a debugging circuit board, a metal base, and an RF converter. The debugging circuit board is fixed on the metal base, and the RF converter is installed at both ends of the metal base. The debugging circuit board is made of a high-frequency double-sided copper-clad substrate, with the device under test (DUT) socket in the center of its front side, debugging circuits on both sides, and a large grounding copper-clad surface on the back side that contacts and connects to the metal base. This device integrates the DUT socket and debugging circuit for debugging and testing SAW devices on a high-frequency substrate, fixes the debugging circuit board to the metal base to achieve effective electrical connection between the ground electrode and the metal base, and connects the debugging circuit board to the testing instrument via the RF converter. The entire device has a compact structure, low RF loss, and convenient debugging and testing operations.

[0004] However, the aforementioned surface acoustic wave device debugging and testing fixture has certain drawbacks in use:

[0005] The aforementioned surface acoustic wave (SAW) device debugging and testing fixture lacks a heat dissipation structure for the SAW device during use. This leads to localized overheating during high-power testing, affecting device stability and causing distorted test results that fail to accurately reflect the actual performance of the device under normal operating conditions. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a surface acoustic wave (SAW) device debugging and testing fixture that can cool down the device during testing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a surface acoustic wave device debugging and testing frame, comprising a test frame body, a top cover mounted on the surface of the test frame body, an air duct ring fixedly connected to the center of the bottom surface of the top cover, a fan fixedly connected to the center of the air duct ring, a plurality of exhaust holes corresponding to the position of the fan being opened in the center of the surface of the top cover, and a plurality of air inlets being opened on both sides of the surface of the top cover.

[0008] Furthermore, two symmetrically arranged rotating blocks are fixedly connected to one side of the top cover, and a connecting plate is installed on one side of the surface of the test frame body. The surface of the connecting plate has a rotating groove corresponding to the position of the two rotating blocks. A rotating shaft is fixedly connected in the rotating groove, and the rotating blocks are rotatably connected to the rotating shaft. An insert is fixedly connected to the bottom surface of the connecting plate, and an installation groove corresponding to the position of the insert is opened on the surface of the test frame body. Two conductive rods are fixedly connected in the installation groove, and a slot corresponding to the position of the conductive rod is opened on the bottom surface of the insert. The fan is electrically connected to the test frame body through the conductive rod.

[0009] Furthermore, the side wall of the insertion block is provided with a positioning hole, and the back side of the test frame body is provided with a sliding groove corresponding to the position of the positioning hole, and a positioning rod is slidably connected in the sliding groove.

[0010] Furthermore, a fixing ring is fixedly connected to the back side of the test frame body. The fixing ring is sleeved on the outside of the positioning rod. A movable disk is fixedly connected to the end of the positioning rod away from the test frame body. A return spring is fixedly connected between the movable disk and the fixing ring.

[0011] Furthermore, each of the rotating slots has a magnetic block fixedly connected to its inner wall, and a positioning block corresponding to the position of the magnetic block is fixedly connected to the surface of the rotating block.

[0012] Furthermore, a filter screen is installed on the bottom surface of the air-drawing ring, and an installation ring is threadedly connected to the outer wall of the air-drawing ring. The outer edge of the filter screen is located between the air-drawing ring and the installation ring, and multiple anti-slip blocks are fixedly connected to the outer wall of the installation ring.

[0013] Furthermore, a filter element is fixedly connected to each of the air inlets.

[0014] Furthermore, two symmetrically arranged observation windows are fixedly connected to the surface of the top cover.

[0015] Furthermore, a slot is provided on the side of the top cover away from the rotating block.

[0016] Furthermore, a buffer pad is fixedly connected to the bottom surface of the top cover.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This surface acoustic wave (SAW) device testing fixture utilizes an active air-cooling system created by adding a top cover to the fixture body and incorporating an air-guiding ring and fan in the center of the top cover's bottom surface. During high-power testing of the SAW device, the fan activates, guiding airflow. External cool air enters the testing area through air inlets on both sides of the top cover, carrying away heat as it flows over the surface of the device under test. The hot air is then exhausted through the exhaust vent in the center of the top cover. This active air-cooling system rapidly reduces the device temperature during high-power testing, preventing performance drift caused by localized overheating and ensuring test results more closely approximate actual performance under real-world conditions. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0020] Figure 2 This is a three-dimensional structural diagram of another embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of another form of the three-dimensional split structure of the present invention;

[0022] Figure 4 This is a three-dimensional sectional view of the test frame body, conductive plug, and positioning rod of the present invention.

[0023] Figure 5 This is a three-dimensional disassembled structural diagram of the top cover, connecting plate, and insert block of the present invention;

[0024] Figure 6 This is a three-dimensional disassembled structural diagram of the top cover, filter screen, mounting ring, and fan of the present invention;

[0025] Figure 7 This is a three-dimensional cross-sectional structural diagram of the top cover, observation window, and rotating block of the present invention;

[0026] Figure 8 This is a three-dimensional disassembled structural diagram of the connecting plate, insert, rotating shaft and magnetic block of the present invention.

[0027] In the diagram: 1. Test rack body; 2. Top cover; 3. Air intake ring; 4. Fan; 5. Filter; 6. Exhaust vent; 7. Inlet vent; 8. Rotating block; 9. Connecting plate; 10. Rotating groove; 11. Rotating shaft; 12. Insert block; 13. Mounting groove; 14. Conductive insert rod; 15. Slot; 16. Positioning hole; 17. Sliding groove; 18. Positioning rod; 19. Fixing ring; 20. Moving disk; 21. Return spring; 22. Magnetic block; 23. Positioning block; 24. Filter screen; 25. Mounting ring; 26. Anti-slip block; 27. Buffer pad; 28. Observation window; 29. ​​Slot. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figures 1 to 8 A surface acoustic wave device debugging and testing frame includes a test frame body 1, a top cover 2 installed on the surface of the test frame body 1, an air duct ring 3 fixedly connected to the middle of the bottom surface of the top cover 2, a fan 4 fixedly connected to the middle of the air duct ring 3, a plurality of exhaust holes 6 corresponding to the position of the fan 4 in the middle of the surface of the top cover 2, and a plurality of air inlets 7 in the two sides of the surface of the top cover 2.

[0030] The surface acoustic wave (SAW) device debugging and testing fixture of this invention constructs an active cooling system by adding a top cover 2 to the surface of the fixture body 1, and setting an air-guiding ring 3 and a fan 4 in the middle of the bottom surface of the top cover 2. When the SAW device is subjected to high-power testing, the fan 4 starts and guides the airflow through the air-guiding ring 3: external cold air enters the testing area through the air inlets 7 on both sides of the top cover 2, carries away heat as it flows over the surface of the device under test, and then the hot air is discharged through the exhaust hole 6 in the middle of the top cover 2. Using this active air cooling system, the temperature of the device during high-power testing can be quickly reduced, avoiding performance drift caused by local overheating, and making the test results closer to the real performance under actual operating conditions.

[0031] As a preferred embodiment of the present invention, two symmetrically arranged rotating blocks 8 are fixedly connected to one side of the top cover 2, and a connecting plate 9 is installed on one side of the surface of the test frame body 1. The surface of the connecting plate 9 has a rotating groove 10 corresponding to the position of the two rotating blocks 8. A rotating shaft 11 is fixedly connected in the rotating groove 10. The rotating blocks 8 are rotatably connected to the rotating shaft 11. An insert block 12 is fixedly connected to the bottom surface of the connecting plate 9. An installation groove 13 corresponding to the position of the insert block 12 is opened on the surface of the test frame body 1. Two conductive rods 14 are fixedly connected in the installation groove 13. A slot 15 corresponding to the position of the conductive rod 14 is opened on the bottom surface of the insert block 12. The fan 4 is electrically connected to the test frame body 1 through the conductive rod 14.

[0032] Specifically, when it is necessary to place or replace the surface acoustic wave device under test, the top cover 2 can be flipped upwards. At this time, the rotating block 8 rotates around the rotating shaft 11 on the connecting plate 9, realizing the rapid opening and closing of the top cover 2. Through the conductive plug 14, the test frame body 1 can supply power to the fan 4, and the fan 4 does not require an additional power supply.

[0033] As a preferred embodiment of the present invention, the side wall of the insert 12 is provided with a positioning hole 16, and the back side of the test frame body 1 is provided with a sliding groove 17 corresponding to the position of the positioning hole 16, and a positioning rod 18 is slidably connected in the sliding groove 17.

[0034] Specifically, after the top cover 2 is installed, the insert 12 is fully embedded in the mounting groove 13. At this time, the positioning rod 18 on the back side of the test frame body 1 can slide inward along the sliding groove 17 until its end is inserted into the positioning hole 16 on the side wall of the insert 12, forming a mechanical lock. The positioning rod 18 and the sliding groove 17 are in clearance fit, and locking can be completed by manually pushing; to unlock, pull the positioning rod 18 in the opposite direction to disengage it from the positioning hole 16, and the top cover 2 and the connecting plate 9 can be removed for maintenance and replacement.

[0035] As a preferred technical solution of the present invention, a fixing ring 19 is fixedly connected to the back side of the test frame body 1. The fixing ring 19 is sleeved on the positioning rod 18. A movable disk 20 is fixedly connected to the end of the positioning rod 18 away from the test frame body 1. A return spring 21 is fixedly connected between the movable disk 20 and the fixing ring 19.

[0036] Specifically, the return spring 21 pulls the moving disk 20, causing the positioning rod 18 to automatically insert into the positioning hole 16, thus ensuring the stability of the positioning rod 18.

[0037] As a preferred embodiment of the present invention, each rotating groove 10 has a magnetic block 22 fixedly connected to its inner wall, and a positioning block 23 corresponding to the position of the magnetic block 22 is fixedly connected to the surface of the rotating block 8.

[0038] Specifically, after the top cover 2 is opened, the magnetic block 22 and the positioning block 23 will be attracted together. The magnetic force of the two will provide fixation for the top cover 2, thereby ensuring the stability of the top cover 2 in the open state and preventing the top cover 2 from affecting the operation test frame body 1. At the same time, the magnetic fixation method also makes it easy to remove the fixation of the top cover 2 and quickly close the top cover 2.

[0039] As a preferred technical solution of the present invention, a filter screen 24 is installed on the bottom surface of the air-guiding ring 3, and an installation ring 25 is threadedly connected to the outer wall of the air-guiding ring 3. The outer edge of the filter screen 24 is located between the air-guiding ring 3 and the installation ring 25, and a plurality of anti-slip blocks 26 are fixedly connected to the outer wall of the installation ring 25.

[0040] As a preferred embodiment of the present invention, each air inlet 7 is fixedly connected with a filter 5.

[0041] Specifically, when fan 4 starts to guide airflow for heat dissipation, the external air carries a large amount of dust and impurities. The accumulation of dust affects the heat dissipation performance of the device, preventing heat from being dissipated in time, which in turn causes the device temperature to rise, affecting its performance stability and lifespan. Filter 5 can effectively intercept this dust, preventing dust from entering the test area and adhering to the surface of the surface acoustic wave device. Filter 24 can prevent fan 4 from being damaged by inhaled debris during operation, ensuring that fan 4 operates continuously and stably, providing a stable airflow to the test area, further ensuring the performance stability of the surface acoustic wave device during testing, and extending the device's lifespan.

[0042] As a preferred embodiment of the present invention, the top cover 2 has two symmetrically arranged observation windows 28 fixedly connected to its surface.

[0043] Specifically, the observation window 28 is made of a special glass material with high transparency and high strength, which allows the operator to clearly observe the test status of the surface acoustic wave device inside the test frame body 1, including key information such as changes in the appearance of the device and the flashing of the indicator lights.

[0044] As a preferred embodiment of the present invention, a slot 29 is provided on the side of the top cover 2 away from the rotating block 8.

[0045] Specifically, the card slot 29 makes it easier for staff to open the top cover 2 and improves their operating experience.

[0046] As a preferred embodiment of the present invention, a buffer pad 27 is fixedly connected to the bottom surface of the top cover 2.

[0047] Specifically, the buffer pad 27 can reduce the vibration of the top cover 2, thereby reducing the noise generated during the operation of the fan 4 and providing a better testing environment for the staff.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface acoustic wave (SAW) device debugging and testing fixture, comprising a testing fixture body (1), characterized in that, The test frame body (1) is fitted with a top cover (2). A fan ring (3) is fixedly connected to the center of the bottom surface of the top cover (2). A fan (4) is fixedly connected to the center of the fan ring (3). Multiple exhaust holes (6) corresponding to the positions of the fan (4) are opened in the center of the top cover (2). Multiple air inlets (7) are opened on both sides of the top cover (2). Two symmetrically arranged rotating blocks (8) are fixedly connected to one side of the top cover (2). A connecting plate (9) is installed on one side of the test frame body (1). A rotating groove (10) corresponding to the positions of the two rotating blocks (8) is opened on the surface of the connecting plate (9). A rotating shaft (11) is fixedly connected in the rotating groove (10). The rotating blocks (8) and the rotating shaft (11) are rotatably connected. Next, the bottom surface of the connecting plate (9) is fixedly connected to the insert block (12), the surface of the test frame body (1) is provided with an installation groove (13) corresponding to the position of the insert block (12), two conductive rods (14) are fixedly connected in the installation groove (13), the bottom surface of the insert block (12) is provided with a slot (15) corresponding to the position of the conductive rod (14), the fan (4) is electrically connected to the test frame body (1) through the conductive rod (14), the bottom surface of the air-guiding ring (3) is equipped with a filter screen (24), the outer wall of the air-guiding ring (3) is threaded with an installation ring (25), the outer edge of the filter screen (24) is located between the air-guiding ring (3) and the installation ring (25), and the outer wall of the installation ring (25) is fixedly connected with multiple anti-slip blocks (26).

2. The surface acoustic wave device debugging and testing fixture according to claim 1, characterized in that, The insert (12) has a positioning hole (16) on its side wall, and the test frame body (1) has a sliding groove (17) on its back side that corresponds to the position of the positioning hole (16). A positioning rod (18) is slidably connected in the sliding groove (17).

3. The surface acoustic wave device debugging and testing fixture according to claim 2, characterized in that, A fixing ring (19) is fixedly connected to the back side of the test frame body (1). The fixing ring (19) is sleeved on the outside of the positioning rod (18). A movable disk (20) is fixedly connected to the end of the positioning rod (18) away from the test frame body (1). A return spring (21) is fixedly connected between the movable disk (20) and the fixing ring (19).

4. The surface acoustic wave device debugging and testing fixture according to claim 3, characterized in that, Each of the rotating slots (10) has a magnetic block (22) fixedly connected to its inner wall, and a positioning block (23) corresponding to the position of the magnetic block (22) is fixedly connected to the surface of the rotating block (8).

5. The surface acoustic wave device debugging and testing fixture according to claim 4, characterized in that, Each of the air inlets (7) is fixedly connected with a filter (5).

6. The surface acoustic wave device debugging and testing fixture according to claim 5, characterized in that, The top cover (2) has two symmetrically arranged observation windows (28) fixedly connected to its surface.

7. A surface acoustic wave device debugging and testing fixture according to claim 6, characterized in that, The top cover (2) has a slot (29) on the side away from the rotating block (8).

8. The surface acoustic wave device debugging and testing fixture according to claim 7, characterized in that, The bottom surface of the top cover (2) is fixedly connected to a buffer pad (27).

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