Decoupling ratio testing device

Abstract

The utility model relates to a decoupling ratio testing device, which comprises a lifting sliding table, an upper loop antenna, a lower loop antenna, an antenna supporting block, an X-axis and Y-axis precision fine tuning sliding table group, a sample clamping table, a clamping table fixing block and a bottom plate, the upper loop antenna is mechanically connected with the lifting sliding table, the lower loop antenna is fixed to the antenna supporting block, the lower face of the antenna supporting block is connected to the XY-axis precision fine adjustment sliding table set, and the XY-axis precision fine adjustment sliding table set is installed on the bottom plate. The sample clamping table is fixed on a clamping table fixing block, and the clamping table fixing block is movably connected to the bottom plate. The testing device provided by the utility model can assist in realizing sample clamping when two parameters of the same-side decoupling ratio and the different-side decoupling ratio of the NSS are measured, and is convenient in state switching.

Description

Technical Field

[0001] The utility model relates to the field of electronic testing, and in particular to a decoupling ratio test device capable of assisting in measuring the same-side decoupling ratio (Rda) and opposite-side decoupling ratio (Rdi) of a noise suppression sheet (NSS), thereby helping to complete the electromagnetic characteristic measurement of the noise suppression sheet. Background Art

[0002] Noise suppression sheets (NSS) are primarily used to decouple noise paths, suppress RF noise currents, and reduce radiation. Their effectiveness can be evaluated using the same-side decoupling ratio, opposite-side decoupling ratio, transmission power loss ratio, and radiation suppression ratio. Currently, there are no test fixtures in China for these same-side and opposite-side decoupling ratios. In practice, accurate positioning between the loop antenna and the NSS is difficult to measure, leading to significant deviations in test results. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a decoupling ratio testing device, which can simultaneously assist in the measurement of the same-side decoupling ratio and the opposite-side decoupling ratio of NSS, thereby improving the measurement accuracy. The same-side decoupling ratio and the opposite-side decoupling ratio measurement states are simply switched and the operation is convenient. The device itself is small in size and easy to move.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a decoupling ratio test device, comprising:

[0005] Lifting slide, upper loop antenna, lower loop antenna, antenna support block, XY axis precision fine-tuning slide assembly, sample clamp, clamp fixing block and base plate;

[0006] The upper loop antenna is mechanically connected to the lifting slide, and the lower loop antenna is fixed to the antenna support block. The lower side of the antenna support block is connected to the XY axis precision fine-tuning slide group, and the XY axis precision fine-tuning slide group is mounted on the bottom plate;

[0007] The sample clamping platform is fixed on the clamping platform fixing block, and the clamping platform fixing block is movably connected to the base plate.

[0008] Furthermore, the sample clamping platform is an L-shaped structure for clamping the sample.

[0009] Furthermore, the clamping table fixing block includes vertical and horizontal slots for clamping the sample clamping table.

[0010] Furthermore, the sample clamping platform includes spring clamps, which are located on both sides of the sample clamping platform and are used to clamp and fix the left and right sides of the noise suppression sheet on the sample clamping platform.

[0011] Furthermore, the method also includes a Z-axis precision fine-tuning slide for the sample, a support column, and a Y-axis precision fine-tuning slide. The clamping table fixing block is vertically mechanically connected to the Z-axis precision fine-tuning slide for the sample. The Z-axis precision fine-tuning slide is mechanically connected to the Y-axis precision fine-tuning slide through the support column, and the Y-axis precision fine-tuning slide is fixed on the base plate.

[0012] The Z-axis precision fine-tuning slide adopts a gear rack engagement mechanism through the support column and the Y-axis precision fine-tuning slide adopts a gear rack engagement mechanism.

[0013] Furthermore, the sample clamp is inserted into a horizontal or vertical slot of the clamp fixing block.

[0014] Furthermore, the sample clamp is vertically inserted into the vertical slot of the clamp fixing block and fixed, and the upper and lower loop antennas are located on the same side of the noise suppression plate.

[0015] Furthermore, the sample clamp is horizontally inserted into the horizontal slot of the clamp fixing block and fixed, so that the upper and lower loop antennas are located on both sides of the noise suppression plate.

[0016] Furthermore, the lifting slide is connected to a screw knob for lifting adjustment.

[0017] Beneficial effects

[0018] The test device of the utility model can realize the clamping of two parameters of the auxiliary NSS, the same-side decoupling ratio and the opposite-side decoupling ratio. The same-side and opposite-side test states are switched simply, the operation is convenient, the sample loading is convenient, the device itself is small in size, and is easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the decoupling ratio test device;

[0020] Figure 2 This is a schematic diagram of the noise suppression sheet (NSS) loading;

[0021] Figure 3 Schematic diagram of sample clamp loading for same-side decoupling ratio measurement;

[0022] Figure 4 Schematic diagram of the sample holder loading for measuring the opposite-side decoupling ratio.

[0023] In the figure, 01. Lifting slide, 02. Upper loop antenna, 03. Lower loop antenna, 04. Spring clip, 05. XY-axis precision fine-tuning slide assembly, 06. Base plate, 07. Specimen Y-axis precision fine-tuning slide, 08. Specimen clamp, 09. Support column, 10. Clamp fixing block, 11. Vertical fixing knob, 12. Specimen Z-axis precision fine-tuning slide, 13. Horizontal fixing knob, 14. Antenna support block, 15. Noise suppression sheet. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] According to the embodiment of the present utility model, Figure 1 As shown in the figure, it is a structural diagram of the decoupling ratio test device, including a lifting slide 01, an upper loop antenna 02, a lower loop antenna 03, an antenna support block 14, an XY-axis precision fine-tuning slide group 05, a sample clamp 08, a clamp fixing block and a base plate 06, etc.

[0026] exist Figure 1 The upper middle loop antenna 02 is mechanically connected to the lifting slide 01, and the lower loop antenna 03 is fixed to the antenna support block 14 by a nut. By rotating the spiral knob, the lifting slide 01 can be lowered to make the upper loop antenna 02 close to the lower loop antenna 03. The bottom of the antenna support block 14 is connected to the XY-axis precision fine-tuning slide group 05, and the XY-axis precision fine-tuning slide group 05 is installed on the base plate 06.

[0027] The lower loop antenna 03 is aligned with the upper loop antenna 02 in the vertical direction by adjusting the XY axis precision fine-tuning slide assembly 05 left and right.

[0028] like Figure 2 The figure shows the schematic diagram of the noise suppression sheet (NSS) loading. The sample holder 08 is an L-shaped structure used to clamp the sample.

[0029] The noise suppression sheet 15 is clamped and fixed to the sample clamping platform 08 by opening and closing the spring clips 04 on the sample clamping platform 08. The clamping platform fixing block includes vertical and horizontal slots for clamping the sample clamping platform.

[0030] During the test, the sample clamp 08 is inserted into the slot of the clamp fixing block 10, and the clamp fixing block 10 is vertically mechanically connected to the sample Z-axis precision fine-tuning slide 12. The Z-axis precision fine-tuning slide is mechanically connected to the Y-axis precision fine-tuning slide 07 through the support column 09, and the Y-axis precision fine-tuning slide 07 is fixed on the base plate 06.

[0031] like Figure 3 As shown, when performing the same-side decoupling ratio test, the sample clamp 08 is vertically inserted into the vertical slot of the clamp fixing block and the vertical fixing knob 11 is tightened so that the upper and lower loop antennas are located on the same side of the noise suppression plate. At the same time, the sample Y-axis precision fine-tuning slide 07 and the sample Z-axis precision fine-tuning slide 12 are adjusted so that the noise suppression plate 15 is 2 mm away from the loop antenna and the center line is aligned with the center of the upper and lower loop antennas, and then the same-side decoupling ratio test is started.

[0032] like Figure 4The figure shows a schematic diagram of loading the sample holder for measuring the opposite-side decoupling ratio. When performing the opposite-side decoupling ratio test, the sample holder 08 is horizontally inserted into the horizontal slot of the holder fixing block and the horizontal fixing knob 13 is tightened so that the upper and lower loop antennas are located on both sides of the noise suppression plate. At the same time, the sample Y-axis precision fine-tuning slide 07 and the sample Z-axis precision fine-tuning slide 12 are adjusted so that the center of the noise suppression plate is located between the upper and lower loop antennas before starting the opposite-side decoupling ratio test.

[0033] During the test, the upper and lower antennas are connected to the two ports of an external vector network analyzer. The upper antenna of the loop antenna pair is connected to the lifting mechanism, and the lower antenna is connected to the XY-axis precision fine-tuning slide assembly. After the upper loop antenna is lowered to a sufficient height using the lifting knob and fixed in position, the lower loop antenna is vertically aligned with the upper loop antenna by adjusting the XY-axis precision fine-tuning slide assembly. The RF magnetic field generated by the upper loop antenna now couples with the lower loop antenna. The noise suppression sheet (NSS) is cut to the appropriate size and clamped to the sample holder for measurement.

[0034] When performing the same-side decoupling ratio test, insert the sample clamp vertically into the middle position of the clamp fixing block slot and tighten the vertical fixing knob. At the same time, adjust the sample Y-axis precision fine-tuning slide and the sample Z-axis precision fine-tuning slide so that the center of the NSS is located at the center of the loop antenna. At this time, part of the antenna's magnetic flux is guided to the NSS, thereby affecting the coupling of electromagnetic losses in the material. The same-side decoupling ratio parameter can be obtained by combining with the test instrument.

[0035] When conducting a different-side decoupling ratio test, insert the sample clamp horizontally into the middle position of the clamp fixing block slot and tighten the horizontal fixing knob. At the same time, adjust the sample Y-axis precision fine-tuning slide and the sample Z-axis precision fine-tuning slide so that the center of the NSS is located at the center of the loop antenna. At this time, part of the antenna's magnetic flux is guided to the NSS, thereby affecting the coupling of electromagnetic losses in the material. The different-side decoupling ratio parameters can be obtained by combining with the test instrument.

[0036] In summary, the device of the present invention can realize the measurement of two parameters of NSS: the same-side decoupling ratio and the opposite-side decoupling ratio, and has high measurement accuracy. The switching between the same-side and opposite-side test states is simple, the operation is convenient, the sample loading is convenient, the device itself is small in size, and it is easy to move.

Claims

1. A decoupling ratio test device, characterized in that: include: Lifting slide, upper loop antenna, lower loop antenna, antenna support block, XY axis precision fine-tuning slide assembly, sample clamp, clamp fixing block and base plate; The upper loop antenna is mechanically connected to the lifting slide, and the lower loop antenna is fixed to the antenna support block. The lower side of the antenna support block is connected to the XY axis precision fine-tuning slide group, and the XY axis precision fine-tuning slide group is mounted on the bottom plate; The sample clamping platform is fixed on the clamping platform fixing block, and the clamping platform fixing block is movably connected to the base plate.

2. The decoupling ratio test device according to claim 1, characterized in that: The sample clamping platform is an L-shaped structure and is used for clamping the sample.

3. The decoupling ratio test device according to claim 1, wherein: The clamping platform fixing block includes vertical and horizontal slots for clamping the sample clamping platform.

4. The decoupling ratio test device according to claim 1, wherein: The sample clamping platform comprises spring clamps, which are located on both sides of the sample clamping platform and are used to clamp and fix the left and right sides of the noise suppression sheet on the sample clamping platform.

5. The decoupling ratio test device according to claim 1, characterized in that: It also includes a Z-axis precision fine-tuning slide for the sample, a support column, and a Y-axis precision fine-tuning slide. The clamping table fixing block is vertically mechanically connected to the Z-axis precision fine-tuning slide for the sample. The Z-axis precision fine-tuning slide is mechanically connected to the Y-axis precision fine-tuning slide through the support column, and the Y-axis precision fine-tuning slide is fixed on the base plate.

6. The decoupling ratio test device according to claim 5, characterized in that: The Z-axis precision fine-tuning slide adopts a gear rack engagement mechanism through the support column and the Y-axis precision fine-tuning slide adopts a gear rack engagement mechanism.

7. The decoupling ratio test device according to claim 1, characterized in that: The sample clamping platform is inserted into a horizontal or vertical slot of the clamping platform fixing block.

8. The decoupling ratio test device according to claim 1, characterized in that: The sample clamp is vertically inserted into the vertical slot of the clamp fixing block and fixed, and the upper and lower loop antennas are located on the same side of the noise suppression sheet.

9. The decoupling ratio test device according to claim 1, characterized in that: The sample clamping platform is horizontally inserted into the horizontal slot of the clamping platform fixing block and fixed so that the upper and lower loop antennas are located on both sides of the noise suppression sheet.

10. The decoupling ratio test device according to claim 1, characterized in that: The lifting slide is connected with a screw knob for lifting adjustment.

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