A metamaterial reflectivity testing device

Abstract

The utility model relates to a metamaterial reflectivity testing arrangement, including sample stage, base, test sample, transmitting antenna and receiving antenna, the sample stage is L type structure, the test sample sets up at sample stage side surface position, the base top outer wall fixedly set up has installed track, the installed track inner wall slidingly set up has the guide seat, the guide seat top hinged setting has the adjusting lever, the sample stage bottom outer wall fixedly connected with the support seat. The utility model can drive the support rod vertical movement under the condition that the inclination angle of adjusting lever changes, makes the support rod drive support seat vertical movement, support seat drives sample stage vertical movement, makes sample stage drive test sample vertical movement, realizes the elevation angle regulation and control between test sample and transmitting antenna and receiving antenna, is favorable under the condition that ground level guarantees sample stage always is in the horizontal state.

Description

Technical Field

[0001] This utility model belongs to the field of metamaterial performance testing technology, specifically, it relates to a metamaterial reflectivity testing device. Background Technology

[0002] Metamaterials are a class of man-made materials with unique physical properties. Their distinctive electromagnetic characteristics hold broad application prospects in fields such as communication, radar, and stealth. Metamaterials are not particularly special in terms of composition; their unique properties stem from their intricate geometry and size. Their microstructures, smaller than the wavelength they interact with, can thus influence waves. Reflectivity is one of the important indicators for evaluating the electromagnetic performance of metamaterials. Accurately measuring the reflectivity of metamaterials is crucial for assessing their performance and optimizing their design.

[0003] A search revealed CN222762080U, which discloses a device for testing the reflectivity of a flat plate absorbing material. The device includes a flat plate sample stage and a horn antenna used in conjunction with it. The flat plate sample stage comprises a cylindrical rod, a base, a rotating track, a platform, and an inverted T-shaped metal panel connected to each other. When the rotating track on the platform rotates, it drives the inverted T-shaped metal panel to rotate circumferentially. The test sample is placed on the side of the vertical panel of the inverted T-shaped metal panel facing the horn antenna. When the rotating track rotates circumferentially, it drives the inverted T-shaped metal panel to rotate circumferentially. Alternatively, adjusting the angle between the vertical and horizontal panels of the T-shaped metal panel can adjust the azimuth and elevation angles between the plane of the test sample and each horn antenna.

[0004] However, through exploration, the inventors have discovered that this technical solution still has at least the following defects: In the above-mentioned device, the height of the base and the cylindrical rod can be infinitely adjusted to achieve the elevation angle control between the test sample and the antenna through the threaded connection between the base and the cylindrical rod. However, there are multiple cylindrical rods. When adjusting the height of the sample stage, multiple threaded rods are required to adjust the height of the sample stage, making it difficult to ensure that the sample stage is in a horizontal state in a short time.

[0005] In view of the above, this utility model is hereby proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A metamaterial reflectivity testing device includes a sample stage, a base, a test sample, a transmitting antenna, and a receiving antenna. The sample stage has an L-shaped structure, and the test sample is placed on the side of the sample stage. A mounting rail is fixedly installed on the top outer wall of the base, and a guide seat is slidably installed on the inner wall of the mounting rail. An adjusting rod is hinged to the guide seat. A support seat is fixedly connected to the bottom outer wall of the sample stage, and a support rod is rotatably installed on the bottom of the support seat. The top of the adjusting rod is hinged to the bottom of the support rod. A lead screw is rotatably installed on the inner side of the mounting rail. A threaded hole is opened on the guide seat, and the lead screw is screwed into the inner wall of the threaded hole. A turntable is installed at the end of the lead screw.

[0008] In a preferred embodiment of this utility model, both the transmitting antenna and the receiving antenna are high-gain directional antennas, and both the transmitting antenna and the receiving antenna are located on the side of the test sample.

[0009] In a preferred embodiment of this utility model, a symmetrically arranged limiting frame is fixedly connected to the side of the sample stage, and a support frame is fixedly connected to the bottom of the side of the sample stage.

[0010] In a preferred embodiment of this utility model, both the limiting frame and the support frame are L-shaped structures, and the test sample is set on the side of the sample stage through the limiting frame and the support frame.

[0011] In a preferred embodiment of this utility model, a bubble level is installed on the sample stage along the X-axis and Y-axis directions respectively.

[0012] In a preferred embodiment of this utility model, a symmetrically arranged arc-shaped track is fixedly installed on the top of the base, and a telescopic support plate is slidably installed on the inner wall of the arc-shaped track. The telescopic end of the top of the telescopic support plate is connected to the outer wall of the bottom of the sample stage.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This invention utilizes a turntable to rotate a lead screw, which, in conjunction with a mounting track, moves a guide seat. The guide seat, in conjunction with a support rod, changes the tilt angle of an adjusting rod. This change in the tilt angle of the adjusting rod causes the support rod to move vertically, which in turn moves the support seat vertically. The support seat then moves the sample stage vertically, which in turn moves the test sample vertically. This allows for the adjustment of the elevation angle between the test sample and the transmitting and receiving antennas, which is beneficial for ensuring that the sample stage remains level when the ground is level.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of a metamaterial reflectivity testing device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure between the sample stage and the base of a metamaterial reflectivity testing device according to the present invention;

[0019] Figure 3 This is a side view of the connection between the sample stage and the base of a metamaterial reflectivity testing device according to this utility model.

[0020] Figure 4 This is a schematic diagram of the connection structure between the support base and the mounting track of a metamaterial reflectivity testing device according to this utility model.

[0021] In the diagram: 1. Sample stage; 2. Base; 3. Test sample; 4. Transmitting antenna; 5. Receiving antenna; 6. Support base; 7. Support rod; 8. Mounting track; 9. Guide seat; 10. Adjusting rod; 11. Bubble level; 12. Arc track; 13. Telescopic support plate; 14. Limiting frame; 15. Support frame; 16. Lead screw; 17. Turntable. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0023] like Figures 1 to 4 As shown

[0024] A metamaterial reflectivity testing device includes a sample stage 1, a base 2, a test sample 3, a transmitting antenna 4, and a receiving antenna 5. The sample stage 1 has an L-shaped structure, and the test sample 3 is positioned on the side of the sample stage 1. A mounting rail 8 is fixedly mounted on the top outer wall of the base 2, and a guide seat 9 is slidably mounted on the inner wall of the mounting rail 8. An adjusting rod 10 is hinged to the guide seat 9. A support seat 6 is fixedly connected to the bottom outer wall of the sample stage 1, and a support rod 7 is rotatably mounted on the bottom of the support seat 6. The top of the adjusting rod 10 is hinged to the bottom end of the support rod 7. A lead screw 16 is rotatably mounted on the inner side of the mounting rail 8. A threaded hole is formed on the guide seat 9, and the lead screw 16 is screwed into the inner wall of the threaded hole. A turntable 17 is mounted at the end of the lead screw 16. Rotating the lead screw 16 via the turntable 17 causes the lead screw 16, in conjunction with the mounting rail 8, to move the guide seat 9. The support rod 7 changes the tilt angle of the adjusting rod 10. When the tilt angle of the adjusting rod 10 changes, it can drive the support rod 7 to move vertically, which in turn drives the support base 6 to move vertically. The support base 6 drives the sample stage 1 to move vertically, which in turn drives the test sample 3 to move vertically. This achieves elevation angle adjustment between the test sample 3 and the transmitting antenna 4 and receiving antenna 5. A symmetrically arranged arc-shaped track 12 is fixedly installed on the top of the base 2. A telescopic support plate 13 is slidably installed on the inner wall of the arc-shaped track 12. The telescopic end of the top of the telescopic support plate 13 is connected to the bottom outer wall of the sample stage 1. By rotating the sample stage 1 through the support base 6, the arc-shaped track 12 and the telescopic support plate 13, the sample stage 1 drives the test sample 3 to rotate, achieving stepless azimuth angle adjustment between the test sample 3 and the transmitting antenna 4 and receiving antenna 5.

[0025] In a specific implementation, a bubble level 11 is installed on the sample stage 1 along the X-axis and Y-axis, respectively. The bubble level 11 along the X-axis is used to determine the pitch angle, and the bubble level 11 along the Y-axis is used to determine the azimuth angle. A symmetrically arranged limiting frame 14 is fixedly connected to the side of the sample stage 1, and a support frame 15 is fixedly connected to the bottom of the side of the sample stage 1. Both the limiting frame 14 and the support frame 15 are L-shaped structures. The test sample 3 is set on the side of the sample stage 1 by the limiting frame 14 and the support frame 15. The limiting frame 14 and the support frame 15 limit the test sample 3 to the side of the sample stage 1. The transmitting antenna 4 and the receiving antenna 5 are both high-gain directional antennas. The transmitting antenna 4 and the receiving antenna 5 are both set on the side of the test sample 3. The transmitting antenna 4 transmits the electromagnetic wave signal directionally to the test sample 3. The electromagnetic wave signal reflected by the test sample 3 is received by the receiving antenna 5. The receiving antenna 5 receives the electromagnetic wave signal and transmits it to an external processor. The processor analyzes and processes the signal according to a preset algorithm to calculate the reflectivity of the test sample 3, thereby realizing the test of the reflectivity of the metamaterial.

[0026] The implementation principle of the metamaterial reflectivity testing device in this embodiment is as follows: In specific use, the test sample 3 is limited to the side position of the sample stage 1 by setting the limiting frame 14 and the support frame 15, and the relative position between the test sample 3 and the transmitting antenna 4 and the receiving antenna 5 is accurate. Then, the turntable 17 rotates the lead screw 16, and the lead screw 16, in conjunction with the set mounting rail 8, drives the guide seat 9 to move. The guide seat 9, in conjunction with the set support rod 7, changes the tilt angle of the adjusting rod 10. When the tilt angle of the adjusting rod 10 changes, it can drive the support rod 7 to move vertically, so that the support rod 7 drives the support seat 6 to move vertically, and the support seat 6 drives the sample stage 1 to move vertically, so that the sample stage 1 drives... The test sample 3 moves vertically to adjust the elevation angle between the test sample 3 and the transmitting antenna 4 and receiving antenna 5. Then, the sample stage 1 is rotated by the set support base 6, arc track 12 and telescopic support plate 13, so that the sample stage 1 drives the test sample 3 to rotate, realizing stepless directional angle adjustment between the test sample 3 and the transmitting antenna 4 and receiving antenna 5. Then, the transmitting antenna 4 transmits the electromagnetic wave signal directionally to the test sample 3. The electromagnetic wave signal reflected by the test sample 3 is received by the receiving antenna 5. The receiving antenna 5 receives the electromagnetic wave signal and transmits it to the external processor. The processor analyzes and processes the signal according to the preset algorithm, calculates the reflectivity of the test sample 3, and realizes the test of the reflectivity of the metamaterial.

Claims

1. A metamaterial reflectivity testing device, comprising a sample stage (1), a base (2), a test sample (3), a transmitting antenna (4), and a receiving antenna (5), characterized in that, The sample stage (1) has an L-shaped structure. The test sample (3) is set on the side of the sample stage (1). The top outer wall of the base (2) is fixedly provided with an installation rail (8). The inner wall of the installation rail (8) is slidably provided with a guide seat (9). An adjusting rod (10) is hinged on the guide seat (9). The bottom outer wall of the sample stage (1) is fixedly connected with a support seat (6). A support rod (7) is rotatably installed on the bottom of the support seat (6). The top of the adjusting rod (10) is hinged at the bottom of the support rod (7). A lead screw (16) is rotatably installed on the inner side of the installation rail (8). A threaded hole is opened on the guide seat (9), and the lead screw (16) is screwed on the inner wall of the threaded hole. A turntable (17) is installed at the end of the lead screw (16).

2. The metamaterial reflectivity testing device according to claim 1, characterized in that, Both the transmitting antenna (4) and the receiving antenna (5) are high-gain directional antennas, and both the transmitting antenna (4) and the receiving antenna (5) are located on the side of the test sample (3).

3. The metamaterial reflectivity testing device according to claim 1, characterized in that, The sample stage (1) is fixedly connected to a symmetrically arranged limiting frame (14) on its side, and a support frame (15) is fixedly connected to the bottom of the side of the sample stage (1).

4. The metamaterial reflectivity testing device according to claim 3, characterized in that, The limiting frame (14) and the support frame (15) are both L-shaped structures. The test sample (3) is set on the side of the sample stage (1) through the limiting frame (14) and the support frame (15).

5. The metamaterial reflectivity testing device according to claim 1, characterized in that, A bubble level (11) is installed on the sample stage (1) in the X-axis and Y-axis directions respectively.

6. The metamaterial reflectivity testing device according to claim 1, characterized in that, The base (2) is fixedly installed with symmetrically arranged arc-shaped tracks (12) on the top. The inner wall of the arc-shaped tracks (12) is slidably installed with telescopic support plates (13). The telescopic end of the top of the telescopic support plates (13) is connected to the bottom outer wall of the sample stage (1).

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