10MHz-600MHz high-performance small-size coupler test tool

Abstract

The utility model discloses a 10MHz-600MHz high-performance small-size coupler test tool, which comprises a pressing arm, a PCB substrate, a base and a stand column, the PCB substrate is fixedly connected on the upper surface of the base, the PCB substrate is provided with an RFin end, an RFout end, an isolation / coupling end and a coupling / isolation end, the top end of the PCB substrate is provided with a bonding pad butted with a coupler pin, the stand column is fixedly arranged on the base and positioned on one side of the PCB substrate, and the pressing arm is fixedly connected with the base. The pressing arm movably penetrates through a guide frame arranged on the front side of the stand column and is located above the PCB substrate, the upper portion of the pressing arm is sleeved with a compression spring, the lower end of the compression spring abuts against a limiting pin, the upper end of the compression spring abuts against the inner side of the top of the guide frame, and the limiting pin is connected to the pressing arm through threads. The coupler is directly placed on the PCB substrate and is pressed and fixed by the pressing arm, and an additional welding wire or welding on a bonding pad to connect test equipment is not needed, so that the bonding pad of the coupler is prevented from being damaged, and the test efficiency and the test stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of couplers, and particularly relates to a test tooling for a 10MHz - 600MHz high - performance small - size coupler. Background Art

[0002] As Figure 3-5 shown in the high - performance small - size coupler, it includes a coil welded on a PCB board and pins arranged at the bottom of the housing. The pin definitions are shown in the following table.

[0003] Serial number 1 2 3 4 5 6 Definition Coupling (isolation) Ground Input (output) Output (input) / Isolation (coupling)

[0004] When the existing conventional technology tests a 10MHz - 600MHz high - performance small - size coupler, it usually directly welds a cable to the coupler for testing or directly welds it on the PCB pads for testing. This method is likely to damage the pads of the coupler, resulting in unreliable pad welding during use. Moreover, the welding is time - consuming and laborious, and the test efficiency is low. Content of the Utility Model

[0005] In order to solve the above - mentioned technical problems, the utility model provides a test tooling for a 10MHz - 600MHz high - performance small - size coupler.

[0006] The technical solution adopted by the utility model is a test tooling for a 10MHz - 600MHz high - performance small - size coupler, which includes a pressing arm, a PCB substrate, a base, and a column. The PCB substrate is fixedly connected to the upper surface of the base. The PCB substrate is provided with an RFin terminal, an RFout terminal, an isolation / coupling terminal, and a coupling / isolation terminal. The top of the PCB substrate is provided with pads for docking the coupler pins. The column is fixedly arranged on the base on one side of the PCB substrate. The pressing arm movably passes through a guiding frame arranged on the front side of the column and is located above the PCB substrate. A compression spring is sleeved on the upper part of the pressing arm. The lower end of the compression spring abuts against a limit pin, and the upper end abuts against the inner side of the top of the guiding frame. The limit pin is thread - connected to the pressing arm.

[0007] Preferably, a plurality of threaded holes for connecting the limit pins are arranged along the length direction of the pressing arm.

[0008] Preferably, the guiding frame is a front - end - opening structure and is formed by fixedly connecting four wall plates. A pressing block is arranged at the lower end of the pressing arm, and a pressing head made of hard plastic is arranged at the lower end of the pressing block.

[0009] Preferably, a damping rubber pad is arranged between the PCB substrate and the base.

[0010] Preferably, the column is an L - shaped structure, and a through - hole is arranged in the middle of the column.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: when using the test tooling for testing, the coupler is directly placed on the PCB substrate and fixed by pressing with the pressing arm, without the need for additional welding wires or connecting to the test equipment by welding on the pads, avoiding damage to the pads of the coupler and improving the test efficiency and test stability. At the same time, when using the test tooling for testing the electrical performance indicators, there is no need to weld the product pins during the debugging and testing process, avoiding secondary welding at the client side.

[0012] Among them, a plurality of threaded holes for connecting the limit pins are arranged along the length direction of the pressing arm, which can realize the adjustment of different pressures, meet the needs of different products and different product heights, have a wider application range and lower cost. Brief Description of the Drawings

[0013] Figure 1 is a schematic side view structure diagram of the test tooling;

[0014] Figure 2 is a schematic front view structure diagram of the test tooling;

[0015] Figure 3 is a schematic top view structure diagram of the high-performance small-size coupler;

[0016] Figure 4 is a schematic left view structure diagram of the high-performance small-size coupler;

[0017] Figure 5 is a schematic bottom view structure diagram of the high-performance small-size coupler. Detailed Description of the Embodiments

[0018] The following will further explain and illustrate the present utility model in conjunction with the drawings of the specification, so as to be better understood by those skilled in the art.

[0019] Embodiment 1

[0020] As Figure 1-2 shown, a test tooling for a 10MHz - 600MHz high-performance small-size coupler includes a pressing arm 1, a PCB substrate 2, a base 3, and a column 4. The PCB substrate 2 is fixedly connected to the upper surface of the base 3. The PCB substrate 2 is provided with an RFin terminal 5, an RFout terminal 6, an isolation / coupling terminal 7, and a coupling / isolation terminal 8. The top of the PCB substrate 2 is provided with pads for docking the pins of the coupler 9. The column 4 is arranged on the upper surface of the base 3 on one side of the PCB substrate 2. The pressing arm 1 movably passes through a guiding frame 10 arranged on the front side of the column 4 and is located above the PCB substrate 2. A compression spring 11 is sleeved on the upper part of the pressing arm 1. The lower end of the compression spring 11 abuts against a limit pin 12, and the upper end abuts against the inner side of the top of the guiding frame 10. The limit pin 12 is connected to the pressing arm 1 by a thread.

[0021] During the test using the test fixture, the coupler is directly placed on the PCB substrate 2 and fixed by pressing with the pressing arm 1. There is no need for additional welding wires or welding to connect the test equipment on the pads, which can avoid damage to the pads of the coupler and improve the test efficiency and test stability.

[0022] A plurality of threaded holes 13 for connecting the limit pins 12 are arranged along the length direction of the pressing arm 1, which can realize the adjustment of different pressures, adapt to the needs of different products and different product heights, have a wider application range and lower cost.

[0023] The guiding frame 10 has a front-end opening structure and is fixedly connected by four wall plates. A pressing block 14 is arranged at the lower end of the pressing arm 1, and a pressing head 15 made of hard plastic is arranged at the lower end of the pressing block 14, which can play a protective role when pressing the device to avoid damaging the device to be measured.

[0024] A shock-absorbing rubber pad 16 is arranged between the PCB substrate 2 and the base 3, which can play a buffering and protecting role.

[0025] The column 4 has an L-shaped structure, and the fixed connection is more stable and reliable, which is convenient for installation. A through hole 17 is arranged in the middle of the column 4, which is convenient for wiring at the back side of the PCB board.

[0026] Principle of use:

[0027] 1. Connect the two RF cables to the Figure 1 "RFin end" and "RFout end" in

[0028] 2. Lift the pressing arm of the test fixture, align the input, output and other ports of the directional coupler to be measured with the corresponding positions of the test fixture, press the product tightly with the test fixture and make the bottom of the directional coupler fit tightly with the ground of the test fixture;

[0029] 3. Connect the "RFin" RF cable to the output port of the network analyzer, and connect the "RFout" RF cable to the input port of the network analyzer for measurement.

[0030] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit and principle of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-performance small-sized coupler test tooling in the range of 10 MHz - 600 MHz, characterized in that, It includes a pressing arm (1), a PCB substrate (2), a base (3) and a column (4). The PCB substrate (2) is fixedly connected to the upper surface of the base (3). The PCB substrate (2) is provided with an RF in terminal (5), an RF out terminal (6), an isolation / coupling terminal (7) and a coupling / isolation terminal (8). At the top of the PCB substrate (2), there are pads for docking the pins of a coupler (9). The column (4) is fixedly arranged on the base on one side of the PCB substrate (2). The pressing arm (1) movably passes through a guiding frame (10) arranged on the front side of the column (4) and is located above the PCB substrate (2). A compression spring (11) is sleeved on the upper part of the pressing arm (1). The lower end of the compression spring (11) abuts against a limit pin (12), and the upper end abuts against the inner side of the top of the guiding frame (10). The limit pin (12) is threadedly connected to the pressing arm (1).

2. The high-performance small-size coupler test tooling with 10MHz - 600MHz according to claim 1, characterized in that A plurality of threaded holes (13) for connecting the limit pin (12) are arranged along the length direction of the pressing arm (1).

3. A test fixture for a 10MHz - 600MHz high - performance small - size coupler according to claim 1, characterized in that, The guiding frame (10) has an open-front structure and is formed by fixedly connecting four wall plates. A pressing block (14) is arranged at the lower end of the pressing arm (1), and a pressing head (15) made of hard plastic is arranged at the lower end of the pressing block (14).

4. A test tool for a 10MHz - 600MHz high-performance small-sized coupler according to claim 1, characterized in that, A shock-absorbing rubber pad (16) is arranged between the PCB substrate (2) and the base (3).

5. A test tool for a 10MHz - 600MHz high - performance small - size coupler according to claim 1, characterized in that, The column (4) has an L-shaped structure, and a through hole (17) is arranged in the middle of the column (4).

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