Antenna test system and test method

Abstract

The invention relates to the field of antenna testing, and discloses an antenna testing system which comprises a testing chamber, an inlet and outlet is formed in the side face of the testing chamber, a door is arranged at the inlet and outlet, a shifting component is arranged in the testing chamber and comprises a base, a stand column is rotationally installed on the base, and a connecting shaft formed at the rotating installation position and the stand column are vertically arranged. Traction assemblies are installed on the stand column, the traction assemblies can move in the vertical direction, the two traction assemblies are located on the two sides of the stand column respectively, each traction assembly comprises a sliding base which is in sliding connection with the stand column in the vertical direction, and a horizontally-arranged transverse support is installed on each sliding base; the transverse supports can move in the extending direction of the transverse supports, the transverse supports in the two traction assemblies are parallel to each other, synchronous belt sets are arranged on the transverse supports, connecting bases are installed on the transverse supports in the extending direction of the transverse supports in a sliding mode, the connecting bases are connected with the synchronous belt sets, and trays are arranged on the upper surfaces of the connecting bases.

Description

Technical Field

[0001] The present invention relates to the field of antennas, specifically to the field of antenna testing, and particularly to an antenna testing system and a testing method. Background Art

[0002] With the continuous development of technology, antennas are increasingly used in life. For example, router WiFi antennas, vehicle-mounted antennas, 5G base station antennas, etc. After the antennas are produced, they need to be randomly inspected, and only those that pass the random inspection can be put on sale.

[0003] Based on a search for antenna testing, some existing technologies were found and are introduced one by one as follows:

[0004] First, a Chinese invention patent application with the publication number CN115754489A discloses an antenna testing system. The antenna to be tested is placed in the placement space of the base mechanism. The position of the support mechanism can be adjusted through the control mechanism, thereby adjusting the position of the test antenna and changing the angle between the test antenna and the antenna to be tested, so as to achieve antenna testing.

[0005] Second, a Chinese invention patent application with the publication number CN117368587A fixes the antenna through a fixing mechanism, and makes the receiving probe move relative to the antenna through a displacement mechanism, and collects the radio frequency signals radiated by the antenna at each test position to perform performance tests on the antenna in multiple directions.

[0006] In the above two existing patent documents, the antenna to be tested is fixed, and then some structures are used to drive the receiving element to move around the antenna to be tested, so as to achieve the performance test of the antenna. However, this testing method has some limitations to be improved. For example, the application fields of antennas are very wide. For example, when using a home WiFi antenna, due to different interior decoration situations in different families, users may be in all directions of the home WiFi antenna. However, the above patent documents can only simulate the situation when the antenna is on the ground. If the router is at a high position and the receiving device such as a user's mobile phone is below the antenna when in use, this situation exists, but the above patent documents cannot simulate this situation. When a user uses a mobile phone in a car, since the car is in a moving state, in order to simulate this situation, in the above patent documents, since the antenna to be tested does not move, it is necessary to drive the receiving element to move at a relatively fast speed, and the driving is inconvenient and needs to be improved. 5G base stations are located outdoors, and the above patent documents cannot simulate outdoor high temperature, low temperature, rain and other weather conditions, which need to be improved.

[0007] Based on the above, the present invention proposes an antenna testing system and a testing method. Summary of the Invention

[0008] To solve the problems mentioned in the above background, the present invention provides an antenna test system and a test method.

[0009] To achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0010] An antenna test system includes a test chamber. An inlet and outlet are provided on the side of the test chamber, and a door is provided at the inlet and outlet. A displacement member is provided inside the test chamber. The displacement member includes a base. A column is rotatably installed on the base, and the connecting shaft formed at the rotation installation part and the column are both arranged vertically. A traction assembly is installed on the column. The traction assembly can move in the vertical direction. There are two traction assemblies and they are respectively located on both sides of the column;

[0011] The traction assembly includes a sliding seat that forms a sliding connection with the column in the vertical direction. A horizontal bracket is installed on the sliding seat. The horizontal bracket can move along its own extending direction. The horizontal brackets in the two traction assemblies are parallel to each other;

[0012] A synchronous belt group is provided on the horizontal bracket. A connecting seat is slidably installed on the horizontal bracket along its own extending direction. The connecting seat is connected to the synchronous belt group. A tray is provided on the upper surface of the connecting seat.

[0013] As a further improvement and optimization of the present invention, a first motor for driving the connecting shaft to rotate is provided on the base, and a linear module for driving the sliding seat to move is provided on the column.

[0014] As a further improvement and optimization of the present invention, a driving component for driving the horizontal bracket to move is provided on the sliding seat.

[0015] As a further improvement and optimization of the present invention, the driving component includes a rack provided on the horizontal bracket and a second motor provided on the sliding seat. The extending direction of the rack is parallel to the extending direction of the horizontal bracket. A gear is provided at the output end of the second motor, and the gear meshes with the rack.

[0016] As a further improvement and optimization of the present invention, the synchronous belt group includes a driven pulley, a driving pulley, and a transition pulley, and the axis lines of the three are all perpendicular to the movement direction of the horizontal bracket and perpendicular to the movement direction of the sliding seat. There are two driven pulleys and they are respectively arranged at both ends of the horizontal bracket. The driving pulley is located below the horizontal bracket. There are two transition pulleys and they are respectively located on both sides of the driving pulley along the axis line;

[0017] The synchronous belt group further includes a synchronous belt. The head end of the synchronous belt sequentially bypasses a driven pulley, a transition pulley, the driving pulley, another transition pulley, and another driven pulley and then is connected to the tail end of the synchronous belt to form a closed loop;

[0018] A third motor that is power-connected to the driving pulley is provided on the sliding seat.

[0019] As a further improvement and optimization of the present invention, both the driving pulley and the transition pulley are mounted on the sliding seat.

[0020] As a further improvement and optimization of the present invention, a heating element and a cooling element are provided on the side of the test chamber.

[0021] As a further improvement and optimization of the present invention, a signal jammer is provided at each of the four right-angled corners of the inner cavity of the test chamber, and a number of shielding covers are also placed on the upper surface of the test chamber, and the shielding coefficients of different shielding covers are different.

[0022] As a further improvement and optimization of the present invention, a spray head is provided in the test chamber near the upper cavity wall. The upper end of the spray head is connected to a spray pipe, the end of the spray pipe extends out of the test chamber and is connected to a water pump, and a valve is provided on the spray pipe.

[0023] A test method for an antenna test system includes the following steps:

[0024] Step 1: Drive the column to rotate through the first motor, move the tray close to the door, open the door, and place the antenna and the receiving element flat on the trays of the two traction assemblies respectively;

[0025] Step 2: Adjust the height of the traction assembly through the linear module so that the antenna is located below the receiving element;

[0026] Step 3: Through the cooperation of the linear module, the second motor and the third motor, the included angle between the antenna and the receiving element can be changed, but the distance remains the same;

[0027] Step 4: Adjust the height of the traction assembly through the linear module so that the antenna is located above the receiving element;

[0028] Step 5: Repeat Step 3;

[0029] The cooperation of Step 3 and Step 5 simulates that the receiving element rotates in front of or behind the antenna with the antenna as the center. The front or back refers to the front or back of the signal transmitting end of the antenna;

[0030] Step 6: Drive the traction assembly to move through the linear module, so that the two traction assemblies move away from each other;

[0031] Through the cooperation of the second motor and the third motor, drive the trays of the traction assembly to move, so that the trays of the two traction assemblies move in opposite directions;

[0032] Simulate that the antenna does not move and the receiving element moves through Step 6.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] This solution can use the antenna as the coordinate origin to drive the receiving element to move around the antenna, that is, it can achieve the technical effects of the patent documents mentioned in the background art. Further, the receiving element can be located on both the upper and lower sides of the antenna. Therefore, it can further increase the range of positions of the receiving element around the antenna, and the test results are more comprehensive. On this basis:

[0035] First, place the antenna and the receiving element flat in the trays of two traction components respectively. The antenna is located below the receiving element. The trays in the two traction components move respectively. During the movement, through the cooperation of the linear module, the second motor and the third motor, the angle between the antenna and the receiving element can be changed, but the distance remains the same. Then, place the antenna above the receiving element and repeat the above actions. The advantage is that it can make the receiving element rotate in front of the antenna or behind the antenna with the antenna as the center. The front and back refer to the front or back of the signal transmitting end of the antenna. In this way, it can simulate the test process of the receiving element rotating around the antenna. In addition, the distance between the receiving element and the antenna is adjustable, and the rotation situation when the receiving element is at different distances from the antenna can be simulated;

[0036] Second, when the receiving element is in a moving state, such as making a call in the car or listening to music while running, at this time, the receiving element moves relative to the antenna. In this solution, the two traction components can be driven to move away from each other, and the trays of the two traction components move in opposite directions. In this way, on the one hand, the distance between the antenna and the receiving element is equivalent to an oblique line, and the moving distance in the same space is larger. On the other hand, with the antenna as the reference point, the speed of the receiving element is equal to the sum of its own speed and the speed of the antenna. That is, on the premise of simulating the movement of the receiving element, the simulated speed can be distributed between the receiving element and the antenna. In this way, not only can a faster speed be simulated, but also the receiving element is not likely to fall off the tray due to excessive movement speed;

[0037] Third, in addition, through the cooperation of the heating element, the cooling element, the shielding cover, the signal jammer and the sprinkler head, it is also possible to simulate high-temperature environments, low-temperature environments, wall environments, geographical environments with interfering magnetic fields and rain environments, etc., further improving the comprehensiveness and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of the present invention;

[0039] Figure 2 is a front view of the present invention;

[0040] Figure 3 Schematic diagrams of a displacement member, a spray head, and a signal jammer;

[0041] Figure 4 Structural schematic of the displacement member Figure 1 ;

[0042] Figure 5 Structural schematic of the displacement member Figure 2 ;

[0043] Figure 6 Structural schematic diagram of the traction assembly;

[0044] Figure 7 Partial schematic of the traction assembly Figure 1 ;

[0045] Figure 8 Partial schematic of the traction assembly Figure 2 。

[0046] The reference numerals in the drawings are:

[0047] 100, test chamber; 101, door; 102, heating element; 103, cooling element; 104, shielding cover; 105, signal jammer; 106, spray head; 200, displacement member; 201, base; 202, column; 203, first motor; 204, linear module; 205, traction assembly; 206, slide; 207, cross bracket; 208, connecting seat; 209, tray; 210, second motor; 211, gear; 212, rack; 213, third motor; 214, driving pulley; 215, driven pulley; 216, idler pulley; 217, timing belt. Detailed implementation manners

[0048] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and their effects of the present invention as follows.

[0049] Referring to Figures 1 - 8 , an antenna test system includes a test chamber 100. An inlet and outlet are provided on the side of the test chamber 100, and a door 101 is provided at the inlet and outlet. A heating element 102 and a cooling element 103 are provided on the side of the test chamber 100. The former is used to heat the environment in the test chamber 100, and the latter is used to cool the environment in the test chamber 100. Both can be realized by existing technologies and will not be elaborated here.

[0050] A signal jammer 105 is provided at each of the four right-angled corners of the inner cavity of the test chamber 100.

[0051] Inside the test chamber 100, a spray head 106 is provided near the upper cavity wall. The upper end of the spray head 106 is connected to a spray pipe. The end of the spray pipe extends out of the test chamber 100 and is connected to a water pump. A valve is provided on the spray pipe.

[0052] On the upper surface of the test chamber 100, a number of shielding covers 104 are also placed. The shielding coefficients of different shielding covers 104 are different.

[0053] By the cooperation of the heating element 102 and the cooling element 103, the temperature of the internal environment of the test chamber 100 can be changed to simulate a high-temperature or low-temperature environment. By the spray head 106, a rainy weather can be simulated. By the signal jammer 105, an interference signal can be provided. By putting different shielding covers 104 on the antenna or signal receiving element to be tested, a wall can be simulated.

[0054] A displacement member 200 is also provided inside the test chamber 100.

[0055] Refer to Figures 4 - 5 , the displacement member 200 includes a base 201. A column 202 is rotatably mounted on the base 201, and the connecting shaft formed at the rotatable mounting location is in power connection with a first motor 203. The connecting shaft and the column 202 are both arranged vertically. The first motor 203 is provided on the base 201. By the first motor 203, the connecting shaft can be driven to rotate, and the connecting shaft drives the column 202 to rotate together.

[0056] A traction assembly 205 is mounted on the column 202. The traction assembly 205 can move in the vertical direction. There are two traction assemblies 205 and they are respectively located on both sides of the column 202.

[0057] Refer to Figures 6 - 8 , the traction assembly 205 includes a slide seat 206 which forms a sliding connection with the column 202 in the vertical direction. The slide seat 206 is driven to move by a linear module 204. The linear module 204 is provided on the column 202. Existing electric telescopic rod technology or existing hydraulic telescopic rod technology or existing screw linear motion technology etc. can be adopted, which will not be elaborated here.

[0058] A horizontal support 207 arranged horizontally is mounted on the slide seat 206. The horizontal support 207 can move along its own extending direction. The horizontal supports 207 in the two traction assemblies 205 are parallel to each other.

[0059] A driving component is provided on the slide seat 206 for driving the horizontal support 207 to move. Further, the driving component includes a rack 212 provided on the horizontal support 207 and a second motor 210 provided on the slide seat 206. The extending direction of the rack 212 is parallel to the extending direction of the horizontal support 207. A gear 211 is provided at the output end of the second motor 210, and the gear 211 meshes with the rack 212.

[0060] A synchronous belt group is provided on the horizontal support 207. Further, the synchronous belt group includes a driven pulley 215, a driving pulley 214, and a transition pulley 216, and the axis lines of the three are all perpendicular to the movement direction of the horizontal support 207 and perpendicular to the movement direction of the sliding seat 206. Among them, two driven pulleys 215 are provided and are respectively arranged at both ends of the horizontal support 207. The driving pulley 214 is located below the horizontal support 207. Two transition pulleys 216 are provided and are respectively located on both sides of the driving pulley 214 along the axis line. Both the driving pulley 214 and the transition pulley 216 are installed on the sliding seat 206.

[0061] The synchronous belt group further includes a synchronous belt 217. The head end of the synchronous belt 217 sequentially bypasses a driven pulley 215, a transition pulley 216, the driving pulley 214, another transition pulley 216, and another driven pulley 215, and then is connected to the tail end of the synchronous belt 217 to form a closed loop.

[0062] A third motor 213 that is power-connected to the driving pulley 214 is provided on the sliding seat 206. By driving the driving pulley 214 to rotate through the third motor 213, the synchronous belt 217 can be driven to move.

[0063] A connecting seat 208 is slidably installed on the horizontal support 207 along its own extending direction. The connecting seat 208 is connected to the synchronous belt 217. When the synchronous belt 217 moves, it will drive the connecting seat 208 to move together. A tray 209 is provided on the upper surface of the connecting seat 208. The tray 209 is used to place the antenna or signal receiving element to be tested. Further, it can be placed directly, or inserted, pasted, etc., which will not be elaborated.

[0064] The working principle of the present invention:

[0065] The antenna to be tested can be a home WiFi antenna, a 5G base station antenna, etc., and the receiving element can be a mobile phone, a computer, a tablet, etc.;

[0066] In this solution, the first motor 203 can drive the column 202 to rotate, so that the tray 209 is close to the door 101, which is convenient for placing and taking the antenna or receiving element;

[0067] The height of the traction assembly 205 can be adjusted by the linear module 204;

[0068] The second motor 210 drives the gear 211 to rotate, so as to drive the rack 212 and the transverse bracket 207 to move. During the movement of the transverse bracket 207, since the driving pulley 214 and the transition pulley 216 are installed on the sliding seat 206 and their positions remain unchanged, the synchronous belt 217 will move and drive the connecting seat 208 and the tray 209 to move together. Therefore, at this time, if the third motor 213 drives the synchronous belt 217 to move in the same speed but in the opposite direction, the tray 209 will not move; if the third motor 213 drives the synchronous belt 217 to move in the same direction, the tray 209 will move at an accelerated speed.

[0069] I. Home WiFi Antenna:

[0070] The antenna and the receiving element are respectively placed flat in the trays 209 of the two traction assemblies 205. The antenna is located below the receiving element. During the movement of the trays 209 in the two traction assemblies 205, through the cooperation of the linear module 204, the second motor 210 and the third motor 213, the included angle between the antenna and the receiving element can be changed, but the distance remains the same.

[0071] Then, the antenna is located above the receiving element. During the movement of the trays 209 in the two traction assemblies 205, through the cooperation of the linear module 204, the second motor 210 and the third motor 213, the included angle between the antenna and the receiving element can be changed, but the distance remains the same.

[0072] As can be seen from the above: the receiving element can rotate in front of the antenna or behind the antenna with the antenna as the center. The front and back refer to the front or the back of the signal transmitting end of the antenna. In this way, the test process of the receiving element rotating around the antenna can be simulated. In addition, the distance between the receiving element and the antenna is adjustable, and the situation when the receiving element is at different distances from the antenna can be simulated. Further, shielding covers 104 with different shielding coefficients can be added to simulate the situation when there is a wall in between.

[0073] Second, when the receiving element is in a moving state, such as making a call in a car or listening to music while running, the receiving element moves relative to the antenna. In this solution, the two traction components 205 can be driven to move away from each other, and the trays 209 of the two traction components 205 move in opposite directions. In this way, on the one hand, the distance between the antenna and the receiving element is equivalent to an oblique line, and the moving distance in the same space is larger. On the other hand, taking the antenna as a reference point, the speed of the receiving element is equal to the sum of its own speed and the speed of the antenna. That is, on the premise of simulating the movement of the receiving element, the simulated speed can be distributed between the receiving element and the antenna. In this way, not only can a faster speed be simulated, but also the receiving element is not likely to fall from the tray 209 due to excessive movement speed;

[0074] Third, this solution can also use the antenna as the coordinate origin and drive the receiving element to move around the antenna, that is, it can achieve the technical effects of the patent documents mentioned in the background technology. Further, the receiving element can be located on the upper and lower sides of the antenna. Therefore, the range of the position of the receiving element around the antenna can be further increased, and the test effect is more comprehensive.

[0075] In addition, through the cooperation of the heating element 102, the cooling element 103, the shielding cover 104, the signal jammer 105, and the sprinkler head 106, high-temperature environments, low-temperature environments, wall environments, geographical environments with interfering magnetic fields, and rain environments, etc. can also be simulated, further improving the comprehensiveness and accuracy of the test.

[0076] A test method for an antenna test system includes the following steps:

[0077] Step 1: Drive the column to rotate through the first motor, move the tray close to the door, open the door, and place the antenna and the receiving element flat in the trays of the two traction components respectively;

[0078] Step 2: Adjust the height of the traction component through the linear module so that the antenna is located below the receiving element;

[0079] Step 3: Through the cooperation of the linear module, the second motor, and the third motor, the included angle between the antenna and the receiving element can be changed while the distance remains the same;

[0080] Step 4: Adjust the height of the traction component through the linear module so that the antenna is located above the receiving element;

[0081] Step 5: Repeat Step 3;

[0082] Step 3 is coordinated with Step 5 to simulate the situation where the receiving element rotates around the antenna in front of or behind the antenna. The front or back refers to the front or rear of the signal transmitting end of the antenna.

[0083] Step 6: Drive the traction assembly to move through the linear module, so that the two traction assemblies move away from each other.

[0084] Through the cooperation of the second motor and the third motor, drive the trays of the traction assemblies to move, so that the trays of the two traction assemblies move towards the opposite sides.

[0085] Through Step 6, simulate the situation where the antenna remains stationary and the receiving element moves.

[0086] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An antenna testing system, comprising a testing room (100), wherein an entrance and an exit are arranged on a side of the testing room (100), and a door (101) is arranged at the entrance and the exit, wherein: A displacement member (200) is arranged in the test chamber (100), the displacement member (200) comprising a base (201), a column (202) being rotatably mounted on the base (201), and a connecting shaft formed at the rotatable mounting position and the column (202) are both arranged vertically, a traction assembly (205) is mounted on the column (202), the traction assembly (205) can move in a vertical direction, and two traction assemblies (205) are arranged and are respectively located on both sides of the column (202); The traction assembly (205) comprises a slide seat (206) which is slidably connected with the upright post (202) in the vertical direction, a horizontally arranged cross bracket (207) is mounted on the slide seat (206), and the cross bracket (207) can move along its own extension direction, and the cross brackets (207) in the two traction assemblies (205) are parallel to each other; A synchronous belt group is arranged on the transverse bracket (207), a connecting seat (208) is slidably mounted on the transverse bracket (207) along its own extension direction, the connecting seat (208) is connected to the synchronous belt group, and a tray (209) is arranged on the upper surface of the connecting seat (208).

2. The antenna testing system according to claim 1, characterized in that: The base (201) is provided with a first motor (203) for driving the connecting shaft to rotate, and the column (202) is provided with a linear module (204) for driving the slide seat (206) to move.

3. The antenna testing system according to claim 1, characterized in that: The slide seat (206) is provided with a driving component for driving the cross support (207) to move.

4. The antenna testing system according to claim 3, characterized in that: The driving component comprises a rack (212) arranged on the transverse bracket (207) and a second motor (210) arranged on the slide seat (206); the extension direction of the rack (212) is parallel to the extension direction of the transverse bracket (207); a gear (211) is arranged at the output end of the second motor (210); and the gear (211) is meshed with the rack (212).

5. The antenna testing system according to claim 3, characterized in that: The synchronous belt assembly comprises a driven pulley (215), a driving pulley (214) and a transition pulley (216), and the axis lines of the three are perpendicular to the movement direction of the transverse bracket (207) and the movement direction of the slide seat (206), two driven pulleys (215) are provided and are respectively arranged at two ends of the transverse bracket (207), the driving pulley (214) is located below the transverse bracket (207), and two transition pulleys (216) are provided and are respectively located on both sides of the driving pulley (214) along the axis line; The synchronous belt assembly also includes a synchronous belt (217), the head end of which passes through a driven pulley (215), a transition pulley (216), a driving pulley (214), another transition pulley (216) and another driven pulley (215) in sequence, and is then connected to the tail end of the synchronous belt (217) to form a closed loop. The slide seat (206) is provided with a third motor (213) which is power-connected to the driving pulley (214).

6. The antenna testing system according to claim 5, characterized in that: The driving pulley (214) and the transition pulley (216) are both mounted on the slide seat (206).

7. The antenna testing system according to claim 6, characterized in that: A temperature increasing element (102) and a temperature decreasing element (103) are arranged on the side of the test chamber (100).

8. The antenna testing system according to claim 6, characterized in that: A signal jammer (105) is disposed at each of the four right angles of the inner cavity of the test chamber (100), and a plurality of shielding covers (104) are placed on the upper surface of the test chamber (100), wherein the shielding coefficients of different shielding covers (104) are different.

9. The antenna testing system according to claim 6, characterized in that: A spray head (106) is arranged in the test chamber (100) near the upper cavity wall, the upper end of the spray head (106) is connected to a spray pipe, the end of the spray pipe extends out of the test chamber (100) and is connected to a water pump, and a valve is arranged on the spray pipe.

10. The antenna testing system testing method according to claim 6, characterized in that: The steps include: Step 1: The first motor (203) drives the column (202) to rotate, so that the tray (209) approaches the door (101), the door (101) is opened, and the antenna and the receiving element are respectively placed flat on the trays (209) of the two traction components (205); Step 2: adjusting the height of the traction assembly (205) by means of the linear module (204) so ​​that the antenna is located below the receiving element; Step 3: By cooperating with the linear module (204), the second motor (210) and the third motor (213), the angle between the antenna and the receiving element can be changed, but the distance remains the same; Step 4: adjusting the height of the traction assembly (205) by means of the linear module (204) so ​​that the antenna is located above the receiving element; Step 5: Repeat step 3; Step 3 cooperates with step 5 to simulate that the receiving element rotates with the antenna as the center of the circle on the front side of the antenna or on the back side of the antenna, where the front side or the back side refers to the front side or the back side of the signal transmitting end of the antenna; Step 6: driving the traction assembly (205) to move by the linear module (204), so that the two traction assemblies (205) move away from each other; The tray (209) of the traction assembly (205) is driven to move by the cooperation of the second motor (210) and the third motor (213), so that the trays (209) of the two traction assemblies (205) move toward opposite sides; Step 6 simulates that the antenna is stationary and the receiving element is moving.

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