Test fixture for radio frequency power amplifier board of base station

Abstract

The utility model discloses a test fixture for a radio frequency power amplifier board of a base station, which belongs to the field of fixture testing and specifically comprises a heat dissipation bottom plate, a heat dissipation fan, a to-be-tested product placement platform, a power supply module, a filter and a fixture assembly. The to-be-tested product placing platform, the power module and the clamp assembly are arranged above the heat dissipation bottom plate, the heat dissipation fan is arranged on one side of the to-be-tested product and the power module, the filter is arranged on one side, away from the power module, of the to-be-tested product placing platform, and the clamp assembly comprises a test plate, a supporting column fixing frame and a clamp control mechanism. The clamp control mechanism is fixedly connected with the test plate and is in sliding connection with the support column fixing frame, the lower surface of the test plate is a test surface, and the upper surface is provided with cooling fins; according to the invention, the production requirements of high-efficiency power amplifier testing can be met, product positioning can be rapidly and accurately carried out, cable connection is reduced, the heat dissipation capability and the shielding capability are excellent, and the device is suitable for rapid testing or long-time aging testing of products.

Description

Technical Field

[0001] The invention relates to the field of fixture testing, and in particular to a test fixture for a base station radio frequency power amplifier board. Background Art

[0002] In the mass production process of communication equipment such as base stations, long-term testing and aging of base station RF power amplifier boards are usually involved. Common test fixtures often only solve the functions of clamping and fixing PCB boards, and also require external power supplies, external filters and other devices. The operation is complicated, time-consuming and labor-intensive. At the same time, the heat dissipation function is often not well solved, which will reduce the test efficiency of PCBs and even cause test failures, greatly affecting production efficiency. Summary of the invention

[0003] In view of the above technical problems, the purpose of the present invention is to provide a test fixture for a base station radio frequency power amplifier board, which can integrate a filter and an available 48V power supply and solve the problem of heat dissipation.

[0004] In order to achieve the above purpose. The technical solution adopted by the present invention is: a test fixture for a base station radio frequency power amplifier board, including a heat dissipation base plate, a heat dissipation fan, a platform for placing a product to be tested, a power module, a filter and a fixture assembly; the platform for placing the product to be tested, the power module and the fixture assembly are arranged above the heat dissipation base plate, the heat dissipation fan is arranged on one side of the product to be tested and the power module, the filter is arranged on the side of the platform for placing the product to be tested away from the power module, the fixture assembly includes a test board, a support frame and a fixture control mechanism, the fixture control mechanism is fixedly connected to the test board, the fixture control mechanism is slidably connected to the support frame, the lower surface of the test board is a test surface, and the upper surface is provided with a heat sink.

[0005] Furthermore, the heat dissipation bottom plate is provided with a plurality of heat dissipation holes, and support plates are provided on both sides of the heat dissipation bottom plate, so that an air circulation space is formed between the heat dissipation bottom plate and the test fixture placement surface.

[0006] Furthermore, the cooling fans are provided in three groups, each group having two fans, two of which are arranged on the platform for placing the product to be tested, for cooling the product to be tested, and the other group is arranged on the cooling base plate, for cooling the power module.

[0007] Furthermore, the cooling fan is fixed by a cooling fan fixing bracket; a part of the horizontal surface of the cooling fan fixing bracket is connected to the filter, and another part is connected to the cooling base plate through a fixing block.

[0008] Furthermore, a limit block is provided on one side of the platform for placing the product to be tested, so as to quickly and accurately position the product.

[0009] Furthermore, the power module is a 220V to 48V AC module power supply.

[0010] Furthermore, the support bracket and the clamp control mechanism are provided in two pieces respectively.

[0011] Furthermore, the fixture control mechanism can control the test plate to move up and down.

[0012] Furthermore, the clamp control mechanism has a self-locking function.

[0013] The test board is moved up and down by pulling the wrench of the fixture control mechanism. After it moves down to the right position, it is pressed on the base station RF power amplifier board to be tested.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention integrates a filter, so that after the product to be tested is placed in place, it can be connected to the filter, avoiding the trouble of externally connecting the filter to the traditional fixture.

[0016] 2. The present invention integrates a 220V to 48V module power supply, so that it has power supply capability.

[0017] 3. The test board of the present invention is equipped with a heat sink, which not only has the ability to dissipate heat, but also can shield the PCB.

[0018] 4. The present invention is equipped with a heat dissipation fan, which blows air to the product to be tested and the power supply during testing, so that the fixture system has excellent heat dissipation capacity.

[0019] 5. The present invention can meet the production needs of efficient power amplifier testing, and can quickly and accurately locate products, reduce cable connections, and has excellent heat dissipation and shielding capabilities, and is suitable for rapid testing of products or long-term aging testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the test fixture in this embodiment is shown in FIG. Figure 1 .

[0021] Figure 2 The structure of the test fixture in this embodiment is shown in FIG. Figure 2

[0022] Figure 3 Schematic diagram of the structure of the heat dissipation base plate in the test fixture of this embodiment.

[0023] Figure 4 This is a reference diagram of the use status of the test fixture in this embodiment.

[0024] Among them, 1-heat dissipation base plate, 2-heat dissipation fan, 3-platform for placing the product to be tested, 4-power module, 5-filter, 6-fixture assembly; 21-heat dissipation fan fixing bracket, 22-fixture block, 61-test board, 62-pillar fixing bracket, 63-fixture control mechanism. DETAILED DESCRIPTION

[0025] In order to better understand the present invention, the technical solution of the present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1-2 As shown, a test fixture for a base station radio frequency power amplifier board comprises a heat dissipation base plate 1, a heat dissipation fan 2, a platform for placing a product to be tested 3, a power module 4, a filter 5 and a fixture assembly 6; the platform for placing the product to be tested 3, the power module 4 and the fixture assembly 6 are arranged above the heat dissipation base plate 1, the heat dissipation fan 2 is arranged on one side of the product to be tested and the power module 4, the filter 5 is arranged on the side of the platform for placing the product to be tested 3 away from the power module 4, the fixture assembly 6 comprises a test board 61, a support frame 62 and a fixture control mechanism 63, the fixture control mechanism 63 is fixedly connected to the test board 61, the fixture control mechanism 63 is slidably connected to the support frame 62, the lower surface of the test board 61 is a test surface, and a heat sink is arranged on the upper surface.

[0027] like Figure 3 As shown, preferably, the heat dissipation base plate 1 is provided with a plurality of heat dissipation holes, the heat dissipation base plate 1 is a hollow design, and two square holes are provided in the middle; support plates are provided on both sides of the heat dissipation base plate 1, so that the heat dissipation base plate 1 and the test fixture placement surface form an air circulation space, so that the heat dissipation base plate has a better heat dissipation effect.

[0028] The cooling fans 2 are provided in three groups, each group having two fans. Two of the groups are arranged on the product placement platform 3 for cooling the product to be tested, and the other group is arranged on the cooling base plate 1 for cooling the power module 4.

[0029] Preferably, the heat dissipation fan 2 is fixed by a heat dissipation fan fixing bracket 21 .

[0030] Preferably, a portion of the horizontal surface of the heat dissipation fan fixing bracket 21 is fixedly connected to the filter 5 , and another portion is fixed to the heat dissipation base plate 1 through a fixing block 22 .

[0031] Preferably, a limit block is provided on one side of the product to be tested placement platform 3 for positioning the product to be tested.

[0032] Preferably, the power module 4 is a 220V to 48V AC module power supply.

[0033] Preferably, two of the support brackets 62 and two of the clamp control mechanisms 63 are provided.

[0034] like Figure 4 As shown, in this embodiment, by placing the filter 5 and the limit block of the product to be tested on the heat dissipation base plate 1, the base station RF power amplifier board of the product to be tested can be accurately placed on the fixture; the fixture is equipped with a 220V to 48V AC module power supply, so that the fixture itself has power supply capability; the fixture is equipped with a cooling fan fixing bracket 21, a cooling fan 2, a heat sink, etc., so that the fixture has excellent heat dissipation capability; the fixture is equipped with a support fixing frame 62, on which the fixture control mechanism 63 and the heat sink are fixed, so that the fixture heat sink can move freely up and down, thereby realizing efficient and rapid clamping.

[0035] In this embodiment, by pulling the wrenches of the two fixture control mechanisms 63 upward, the heat sink is lifted upward, and then the product to be tested (base station RF power amplifier board) is placed above the filter on the fixture, and precise positioning is achieved through the limit blocks on the fixture. Pull the wrenches of the two fixture control mechanisms 63 downward to lower the heat sink, and continue to pull the wrenches hard after it is in place, so that the wrenches are self-locking, and at the same time, the heat sink is pressed on the top of the product to be tested and maintained. Connect the remaining external RF cables, optical fiber cables, etc. to achieve rapid testing of the product or long-term aging testing.

[0036] In this embodiment, different products can be tested by replacing different heat dissipation base plates and filters, limit blocks and heat sinks.

[0037] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A test fixture for a base station radio frequency power amplifier board, characterized in that: The invention comprises a heat dissipation base plate (1), a heat dissipation fan (2), a platform for placing a product to be tested (3), a power module (4), a filter (5) and a fixture assembly (6); the platform for placing the product to be tested (3), the power module (4) and the fixture assembly (6) are arranged above the heat dissipation base plate (1); the heat dissipation fan (2) is arranged on one side of the product to be tested and the power module (4); the filter (5) is arranged on the side of the platform for placing the product to be tested (3) away from the power module (4); the fixture assembly (6) comprises a test board (61), a support frame (62) and a fixture control mechanism (63); the fixture control mechanism (63) is fixedly connected to the test board (61); the fixture control mechanism (63) is slidably connected to the support frame (62); the lower surface of the test board (61) is a test surface, and the upper surface is provided with a heat sink.

2. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The heat dissipation base plate (1) is provided with a plurality of heat dissipation holes, and support plates are provided on both sides of the heat dissipation base plate (1), so that an air circulation space is formed between the heat dissipation base plate (1) and the test fixture placement surface.

3. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The cooling fans (2) are provided in three groups, each group having two fans, two of which are arranged on the product placement platform (3) for cooling the product to be tested, and the other group is arranged on the cooling base plate (1) for cooling the power module (4).

4. A test fixture for a base station radio frequency power amplifier board according to claim 1 or 3, characterized in that: The cooling fan (2) is fixed by a cooling fan fixing bracket (21); a part of the horizontal surface of the cooling fan fixing bracket (21) is connected to the filter (5), and another part is connected to the cooling base plate (1) through a fixing block (22).

5. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: A limiting block is provided on one side of the platform (3) for placing the product to be tested, and is used to position the product to be tested.

6. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The power supply module (4) is a 220V to 48V AC module power supply.

7. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The support bracket (62) and the clamp control mechanism (63) are provided in two numbers respectively.

8. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The fixture control mechanism (63) can control the test plate (61) to move up and down.

9. The test fixture for a base station radio frequency power amplifier board according to claim 1, characterized in that: The clamp control mechanism (63) has a self-locking function.

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