Antenna test system and method

Abstract

The invention relates to the field of antenna testing, and discloses an antenna testing system, which comprises a testing chamber and a testing mechanism arranged in the testing chamber, the testing mechanism comprises two groups of testing components, each testing component comprises a fixed seat and a connecting seat, the fixed seat is fixedly arranged in the testing chamber, and the fixed seat and the connecting seat are connected through a traction assembly. A telescopic rod is arranged on the side, deviating from the fixing base, of the connecting base, at least three traction assemblies are arranged in the circumferential direction in an array mode, at the beginning, the overall lengths of all the traction assemblies are consistent, and the axis lines of the traction assemblies in the circumferential array direction coincide with the center line of the telescopic rod. The connecting seats in the two groups of testing members are located between the fixing seats in the two groups of testing members, the tail end of the telescopic rod in one group of testing members is provided with a probe, and the tail end of the telescopic rod in the other group of testing members is used for placing an antenna to be tested.

Description

Technical Field

[0001] The present invention relates to the field of antenna testing, and in particular to an antenna testing system and method. Background Art

[0002] An antenna is a converter that converts guided waves propagating on a transmission line into electromagnetic waves propagating in an unbounded medium, or vice versa. In our daily lives, antennas are commonly found in televisions, mobile phones, etc. Taking mobile phones as an example, as the frequency of use of mobile phones increases, higher performance requirements are placed on mobile phone antennas.

[0003] Based on the search for the performance test of the mobile phone antenna, a Chinese invention patent was found, and its authorization announcement number is CN117335897B, which discloses an antenna performance test device and test method, which can simulate different levels of thunderstorms, rapid movement, vibration intensity and electrostatic interference environments, and can test the performance of the antenna in different usage environments. Among them, when the antenna is driven to move rapidly, the drive motor is started by the motor speed control switch, and the drive motor is controlled to have different speeds. The signal receiving status of the mobile phone antenna at different movement speeds is observed and recorded through the signal receiving display component. That is to say, when the mobile phone antenna is driven to move, the movement of the mobile phone antenna is a rotational movement. However, in real life, mobile phones are usually carried by users when they move, and are often seen in scenarios such as walking, running, and riding in a car. In these scenarios, the user's movement trajectory is generally close to a straight line, and the rotation action disclosed in this patent document is equivalent to the user carrying the mobile phone and spinning in place. As we all know, the action of users carrying mobile phones and spinning in circles is not common in life. Therefore, when simulating the usage scenario of the mobile phone antenna, this patent document lacks scenario simulation of the mobile phone antenna on a moving trajectory that is approximately straight, and the moving trajectory that is approximately straight is a common action of people using mobile phones in daily life. Therefore, in terms of scenario simulation, this patent document fails to simulate the common actions of people using mobile phones in daily life, resulting in the problem that the final mobile phone antenna test results are not comprehensive and accurate.

[0004] Based on the above, the present invention proposes an antenna testing system and method. Summary of the invention

[0005] To solve the problems mentioned in the above background, the present invention provides an antenna testing system and method.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] An antenna testing system comprises a testing room and a testing mechanism arranged in the testing room, the testing mechanism comprises two groups of testing components, the testing components comprise a fixing seat and a connecting seat, the fixing seat is fixedly arranged in the testing room, the fixing seat and the connecting seat are connected via a traction assembly, a telescopic rod is arranged on the side of the connecting seat away from the fixing seat, at least three traction assemblies are arranged in an array along a circumferential direction, initially, the overall lengths of all traction assemblies are consistent and the axis center lines of the circumferential array direction of the traction assemblies coincide with the center lines of the telescopic rods, the connecting seats in the two groups of testing components are located between the fixing seats in the two groups of testing components, a probe is arranged at the end of the telescopic rod in one group of testing components, and the end of the telescopic rod in the other group of testing components is used for placing an antenna to be tested.

[0008] As a further improvement and optimization of the present invention, the traction assembly includes a support arranged on a fixed seat, a movable seat is hingedly arranged on the support, and the axis line of the hinge axis formed at the hinge is perpendicular to the axis line of the circular array direction of the traction assembly, and an air pump and a linear module are arranged on the movable seat.

[0009] As a further improvement and optimization of the present invention, a guide rod is arranged on the movable seat, and the guiding direction of the guide rod is perpendicular to the axis center line of the hinge shaft. The air pump includes a pump housing, and a lug is arranged on the outer surface of the pump housing. The lug and the guide rod form a sliding connection. The extension direction of the pump housing is parallel to the guiding direction of the guide rod. A piston is arranged inside the pump housing, and a piston rod is extended from the end face of the piston. The end of the piston rod is hinged to the connecting seat ball.

[0010] As a further improvement and optimization of the present invention, a threaded sleeve is provided on the cavity wall of the pump housing close to the fixed seat, the piston is in a circular ring shape, the interior of the piston rod is hollow, and the piston and the piston rod are both sleeved on the outside of the threaded sleeve; The linear module comprises a screw rod threadedly arranged in a threaded sleeve, one end of which extends out of the pump housing and forms a power connection with a motor arranged on a movable seat.

[0011] As a further improvement and optimization of the present invention, the telescopic rod includes a plurality of telescopic joints, the interior of the telescopic joint is hollow and an external step is provided at one end and an internal step is provided at the other end; In two adjacent telescopic sections, the external step of one telescopic section is sleeved in the adjacent telescopic section, and a spring is arranged between the external step of one telescopic section and the internal step of the adjacent telescopic section; The plurality of telescopic sections are divided into a first telescopic section, a tail telescopic section and a middle telescopic section located therebetween. The end of the first telescopic section is connected to a connection seat, and the end of the tail telescopic section is connected to a probe or an antenna to be tested.

[0012] As a further improvement and optimization of the present invention, the interior of the connecting seat is hollow, and a connecting hole for connecting its own inner cavity with the first telescopic joint is provided on the connecting seat, and a connecting head connected to its own inner cavity is provided on the outer surface of the connecting seat.

[0013] As a further improvement and optimization of the present invention, the inner wall of the built-in step and the outer wall of the external step are both provided with a buffer layer made of rubber or silicone.

[0014] As a further improvement and optimization of the present invention, the upper end surface of the test chamber is provided with an inlet, and the lower end surface is provided with an outlet; A socket is provided on the side of the test chamber, a shielding gate is inserted into the socket, the shielding gate is hollow inside and two connection nozzles are arranged on the outer surface, and the fixing seats of the two groups of test components are respectively located on both sides of the shielding gate.

[0015] A test method for an antenna test system, simulating a scenario in which a user moves with a mobile phone, comprises the following steps: Step 1: Install the antenna to be tested at the end of the piston rod of one set of test components, and install the probe at the end of the piston rod of another set of test components; Step 2: Inject air into the telescopic rod to extend the telescopic rod; Step three: Use an air pump to drive the position of the end of the piston rod to change. Since the piston rod is ball-hinged with the connecting seat, and the movable seat is hinged with the support, the connecting seat can be made to swing by changing the positional relationship between the ends of the piston rod of the traction assembly. The swing of the connecting seat causes the telescopic rod to swing together, and the telescopic rod causes the antenna to be tested to swing together. Based on the fact that linear velocity is equal to the product of angular velocity and radius, the antenna to be tested moves at high speed, simulating a scenario in which a user carries a mobile phone and moves at high speed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This solution can pull the end of the telescopic rod to move arbitrarily in a three-dimensional coordinate system through the cooperation of the telescopic rod and at least three traction components, that is, pull the probe or the antenna to be tested to move arbitrarily in the three-dimensional coordinate system, thereby adjusting the relative position relationship between the probe and the antenna to be tested, that is, simulating the situation where the antenna to be tested is located at different positions around the probe; By extending the telescopic rod and pulling the telescopic rod through the traction assembly to cause it to deflect, based on the fact that linear velocity is equal to the product of angular velocity and radius, the telescopic rod deflects at a relatively low speed, that is, it can drive the probe or the antenna to be tested to move at a relatively fast speed. Although the moving trajectory is an arc, due to the long length of the telescopic rod, the moving trajectory is approximately a straight line, and the longer the telescopic rod, the faster the moving speed and the more approximately the moving trajectory is a straight line. Therefore, it can better simulate the movement trajectory of the user when carrying a mobile phone. For example: 1. When the user walks with a mobile phone, the walking speed is relatively slow and the walking trajectory is approximately a straight line. Therefore, the telescopic rod is driven to extend to its longest length and then slowly driven to deflect to simulate this scenario. In this scenario, although the telescopic rod is extended to its longest length, the speed is relatively low and the inertia is low. , so it will not bring additional impact to the test component; 2. When the user is riding in the car, the vehicle turns, then the speed is relatively slow, therefore, the extension amount of the telescopic rod is moderate, for example, half extension, and then the telescopic rod is driven to swing, at this time, the diameter of the trajectory of the end of the telescopic rod is shorter, therefore, the trajectory and speed are closer to the trajectory and speed of the mobile phone in the vehicle when turning, that is, this scene can be simulated, and because the speed is low, the inertia is low; 3. When the user is riding in the car, the vehicle travels in a straight line and the speed is relatively fast, therefore, the telescopic rod is driven to extend to the longest, and then the telescopic rod is driven to speed up the swing, this scene can be simulated, in this scene, the telescopic rod is extended to the longest and the speed is fast, therefore, the inertia is large, in this scheme, by optimizing and improving the structure of the traction assembly and the telescopic rod, the influence of inertia on the test component is reduced; Specifically, on the one hand, since the air pump is used to drive the telescopic rod to accelerate the deflection, when the deflection stops, the air in the air pump can be compressed and can act as a buffer medium to reduce the impact of inertia. On the other hand, since the telescopic joint that constitutes the telescopic rod is hollow inside, it is light in weight and can reduce the size of the inertial force. On the other hand, when the deflection stops, since the inner walls of the built-in step and the external step are provided with a buffer layer, it is possible to prevent the telescopic joint from being crushed under the action of the inertial force. Furthermore, the telescopic joint can be slightly offset to one side, and the telescopic joint offsets with the external step. Since the compression amount of the spring is large at this time, the spring can buffer the offset of the external step, that is, the offset of the telescopic joint can be buffered. The external step and the built-in step are provided with a buffer layer, so that a slight translation of the external step and the built-in step can be achieved. Through the cooperation of these three, the impact of the inertial force can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3is a schematic diagram of a shielding gate and two test components; Figure 4 is a schematic diagram of two test components; Figure 5 It is a structural diagram of the test component; Figure 6 is a schematic diagram of the structure of the traction component; Figure 7 is a cross-sectional view of a traction assembly; Figure 8 is a cross-sectional view of the connecting seat and the telescopic rod; Fig. 9 It is a connection diagram of two adjacent expansion joints.

[0018] The reference numerals in the accompanying drawings are: 100, test chamber; 101, entrance; 102, exit; 103, shielding gate; 104, connecting nozzle; 200, test component; 201, fixed seat; 202, traction assembly; 2021, support; 2022, movable seat; 2023, motor; 2024, screw; 2025, pump housing; 2026, threaded sleeve; 2027, piston; 2028, piston rod; 203, connecting seat; 2031, connecting head; 2032, connecting hole; 204, telescopic rod; 2041, telescopic joint; 2042, built-in step; 2043, external step; 2044, spring; 205, probe. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Reference Figure 1-Figure 9 , an antenna testing system includes a testing room 100 and a testing mechanism arranged in the testing room 100.

[0021] The test setup includes two sets of test components 200 .

[0022] Reference Figure 5The test component 200 includes a fixed seat 201 and a connecting seat 203. The fixed seat 201 is fixedly arranged in the test chamber 100. The fixed seat 201 and the connecting seat 203 are connected through a traction component 202. A telescopic rod 204 is arranged on the side of the connecting seat 203 away from the fixed seat 201. At least three traction components 202 are arranged in an array along the circumferential direction. Initially, the overall length of all traction components 202 is consistent and the axis center line of the circumferential array direction of the traction component 202 coincides with the center line of the telescopic rod 204. In addition, the connecting seat 203 in the two groups of test components 200 is located between the fixed seats 201 in the two groups of test components 200. A probe 205 is arranged at the end of the telescopic rod 204 in one group of test components 200, and the end of the telescopic rod 204 in the other group of test components 200 is used to place the antenna to be tested. The placement method can adopt the existing clamp technology or the existing screw fixing method, etc., which will not be repeated.

[0023] By cooperating with at least three traction components 202 and the telescopic rod 204, the end of the telescopic rod 204 can be towed to move arbitrarily in the three-dimensional coordinate system, that is, the probe 205 or the antenna to be tested can be towed to move arbitrarily in the three-dimensional coordinate system, so as to adjust the relative position relationship between the probe 205 and the antenna to be tested, that is, to simulate the situation that the antenna to be tested is located at different positions around the probe 205. In addition, the telescopic rod 204 is extended and the telescopic rod 204 is towed by the traction component 202 to cause a deflection. Based on the fact that the linear velocity is equal to the product of the angular velocity and the radius, the telescopic rod 204 deflects at a relatively low speed, that is, the probe 205 or the antenna to be tested can be driven to move at a relatively fast speed. Although the moving trajectory is an arc, due to the long length of the telescopic rod 204, the moving trajectory is approximately a straight line, and the longer the telescopic rod 204 is, the faster the moving speed is and the more the moving trajectory is approximately a straight line. Therefore, the movement trajectory of the user carrying a mobile phone can be better simulated, for example: When a user walks with a mobile phone, the walking speed is relatively slow and the walking track is approximately straight. Therefore, the telescopic rod 204 is extended to the longest position and then slowly driven to swing, so as to simulate this scene. In this scene, although the telescopic rod 204 is extended to the longest position, the speed is relatively low and the inertia is low, so it will not bring additional impact to the test component 200. When the user is riding in a vehicle and the vehicle turns, the speed is relatively slow. Therefore, the telescopic rod 204 is extended moderately, for example, halfway, and then the telescopic rod 204 is driven to swing. At this time, the diameter of the trajectory of the end of the telescopic rod 204 is shorter. Therefore, the trajectory and speed are closer to the trajectory and speed of the mobile phone in the vehicle when turning, that is, this scene can be simulated, and because the speed is lower, the inertia is lower; When the user is riding in the vehicle, the vehicle travels in a straight line at a relatively fast speed. Therefore, by driving the telescopic rod 204 to extend to its longest position and then driving the telescopic rod 204 to accelerate the yaw, this scenario can be simulated. In this scenario, the telescopic rod 204 is extended to its longest position and at a faster speed. Therefore, the inertia is relatively large. In this solution, the structure of the traction component 202 and the telescopic rod 204 is optimized and improved to reduce the influence of inertia on the test component 200, which is explained in detail later.

[0024] Traction assembly 202: Reference Figure 5-Figure 7 The traction component 202 includes a support 2021 arranged on the fixed seat 201, and a movable seat 2022 is hingedly arranged on the support 2021, and the axis of the hinge axis formed at the hinge is perpendicular to the axis of the circumferential array direction of the traction component 202.

[0025] An air pump and a linear module are disposed on the movable seat 2022 .

[0026] A guide rod is provided on the movable seat 2022, and the guiding direction of the guide rod is perpendicular to the axis of the hinge shaft.

[0027] The air pump includes a pump housing 2025, the outer surface of which is provided with a lug, which is slidably connected to the guide rod. The extension direction of the pump housing 2025 is parallel to the guiding direction of the guide rod. A piston 2027 is sleeved in the pump housing 2025, and a piston rod 2028 extends from the end surface of the piston 2027. The end of the piston rod 2028 is ball-jointed with the connecting seat 203. It should be noted that the air pump can be realized by existing technology. Therefore, by injecting or extracting a gas medium, such as air, into the pump housing 2025, the piston 2027 can be driven to move in the pump housing 2025. This is achievable by existing technology and will not be elaborated on.

[0028] A threaded sleeve 2026 is provided on the cavity wall of the pump housing 2025 close to the fixing seat 201 . The piston 2027 is in a ring shape. The interior of the piston rod 2028 is hollow. The piston 2027 and the piston rod 2028 are both sleeved on the outside of the threaded sleeve 2026 .

[0029] The linear module includes a screw rod 2024 threadedly disposed in a threaded sleeve 2026 , one end of the screw rod 2024 extends out of the pump housing 2025 and forms a power connection with a motor 2023 disposed on a movable seat 2022 .

[0030] The working process of the traction component 202 is specifically as follows: The air pump can be driven to move as a whole through the linear module: the motor 2023 drives the screw rod 2024 to rotate, and the rotation of the screw rod 2024 can drive the air pump to move as a whole; the position of the end of the piston rod 2028 can be driven to change through the air pump; Since the piston rod 2028 is ball-jointed with the connecting seat 203, and the movable seat 2022 is hinged with the support 2021, the connecting seat 203 can be made to swing by changing the positional relationship between the ends of the piston rods 2028 of the three traction assemblies 202, and the swing of the connecting seat 203 will bring the telescopic rod 204 with it; It should be noted that when simulating the situation where the antenna to be tested is located at different positions around the probe 205, the linear module is used to drive the air pump to move as a whole, thereby driving the end position of the piston rod 2028 to change, causing the connecting seat 203 to swing, and cooperating with the telescopic action of the telescopic rod 204 to simulate the situation where the antenna to be tested is located at different positions around the probe 205. This is because the movement accuracy of the linear module is higher. When simulating the movement trajectory of the user carrying a mobile phone, the air pump is used to drive the end position of the piston rod 2028 to change. This is because the air pump runs faster.

[0031] Telescopic rod 204: reference Figure 8 and Fig. 9 The telescopic rod 204 includes a plurality of telescopic joints 2041 .

[0032] The interior of the telescopic joint 2041 is hollow and is provided with an external step 2043 at one end and an internal step 2042 at the other end.

[0033] The connection relationship between two adjacent telescopic joints 2041 is as follows: the external step 2043 of one telescopic joint 2041 is sleeved in the adjacent telescopic joint 2041 , and a spring 2044 is provided between the external step 2043 of one telescopic joint 2041 and the internal step 2042 of the adjacent telescopic joint 2041 .

[0034] The plurality of telescopic joints 2041 are divided into a first telescopic joint, a tail telescopic joint and a middle telescopic joint located therebetween, wherein the end of the first telescopic joint is connected to the connection seat 203, and the end of the tail telescopic joint is connected to the probe 205 or the antenna to be tested.

[0035] The interior of the connecting seat 203 is hollow, and a connecting hole 2032 is provided on the connecting seat 203 for connecting its own inner cavity with the first telescopic joint. The outer surface of the connecting seat 203 is provided with a connecting head 2031 connected with its own inner cavity. The connecting head 2031 is connected to existing equipment such as an air compressor through a hose. Through existing equipment such as an air compressor, air can be injected into the connecting seat 203, thereby injecting air into the telescopic joint 2041, so that the telescopic rod 204 gradually extends and the spring 2044 is compressed. When the air in the connecting seat 203 is extracted, the spring 2044 releases the elastic force, and the telescopic rod 204 gradually contracts.

[0036] In a preferred embodiment, the inner wall of the built-in step 2042 and the outer wall of the external step 2043 are both provided with a buffer layer made of a soft material such as rubber or silicone.

[0037] The simulation of the mobile use environment of the mobile phone antenna in this solution has been specifically described above, so I will not repeat it here. Now I will describe the simulation of the high-speed mobile use environment of the mobile phone: When the user is riding in the vehicle, the vehicle travels in a straight line at a relatively fast speed. Therefore, the telescopic rod is driven to extend to its longest position, and then the telescopic rod is driven to accelerate the swing to simulate this scenario. In this scenario, the telescopic rod is extended to its longest position and at a faster speed. Therefore, the inertia is relatively large. In this solution: on the one hand, since the telescopic rod is driven to accelerate the swing by an air pump, when the swing stops, the air in the air pump can be compressed and therefore can act as a buffer medium to reduce the impact of inertia. On the other hand, since the telescopic joint that makes up the telescopic rod is hollow inside, it has a lighter mass and can reduce the size of the inertial force. On the one hand When the deflection stops, since the inner walls of the built-in step and the external step are provided with a buffer layer, the expansion joint can be prevented from being crushed under the action of inertia. Furthermore, the expansion joint can be slightly offset to one side, and the expansion joint offsets with the external step. Since the compression amount of the spring is large at this time, the spring can buffer the offset of the external step, that is, the offset of the expansion joint is buffered. The external step and the built-in step are provided with a buffer layer, so that a slight translation of the external step and the built-in step can be achieved. Through the cooperation of these three, the influence of inertia can be reduced.

[0038] Preferred embodiment, refer to Figure 1-Figure 3 The upper end surface of the test chamber 100 is provided with an inlet 101, and the lower end surface is provided with an outlet 102. The humidity of the air can be adjusted by the existing humidifier technology, and the temperature of the air can be adjusted by the existing heating technology. The air in the test chamber 100 can be drawn out through the outlet 102 by the existing blower technology, and new air enters the test chamber 100 through the inlet 101, thereby adjusting the humidity and temperature in the test chamber 100 to simulate the humidity and temperature parameters of different usage environments of the mobile phone antenna.

[0039] A socket is provided on the side of the test chamber 100, into which a shielding gate 103 is inserted. The interior of the shielding gate 103 is hollow and two connecting nozzles 104 are provided on the outer surface. Through the pump technology, media with different shielding coefficients can be injected into the shielding gate 103, thereby changing the signal shielding coefficient of the shielding gate 103. Two test components 200 can be located on both sides of the shielding gate 103, respectively, to simulate walls of different thicknesses and materials through the shielding gate 103.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An antenna testing system, comprising a testing room (100) and a testing mechanism arranged in the testing room (100), characterized in that: The test mechanism comprises two groups of test components (200), the test components (200) comprising a fixed seat (201) and a connecting seat (203), the fixed seat (201) being fixedly arranged in the test chamber (100), the fixed seat (201) and the connecting seat (203) being connected via a traction assembly (202), a telescopic rod (204) being arranged on a side of the connecting seat (203) facing away from the fixed seat (201), and at least three traction assemblies (202) being arranged in an array along a circumferential direction, and initially, all the traction assemblies (202) are arranged in an array along a circumferential direction. The overall lengths of the lead components (202) are consistent and the axis centerline of the circumferential array direction of the traction components (202) coincides with the centerline of the telescopic rod (204); the connecting seats (203) in the two groups of test components (200) are located between the fixing seats (201) in the two groups of test components (200); the ends of the telescopic rods (204) in one group of test components (200) are provided with probes (205); and the ends of the telescopic rods (204) in the other group of test components (200) are used to place the antenna to be tested.

2. The antenna testing system according to claim 1, characterized in that: The traction assembly (202) comprises a support (2021) arranged on a fixed seat (201), a movable seat (2022) being hingedly arranged on the support (2021), and the axis centerline of the hinge axis formed at the hinge is perpendicular to the axis centerline of the circumferential array direction of the traction assembly (202), and an air pump and a linear module are arranged on the movable seat (2022).

3. The antenna testing system according to claim 2, characterized in that: A guide rod is provided on the movable seat (2022), and the guiding direction of the guide rod is perpendicular to the axis of the hinge shaft. The air pump comprises a pump housing (2025), and a lug is provided on the outer surface of the pump housing (2025), and the lug is slidably connected to the guide rod. The extension direction of the pump housing (2025) is parallel to the guiding direction of the guide rod. A piston (2027) is sleeved in the pump housing (2025), and a piston rod (2028) extends from the end surface of the piston (2027), and the end of the piston rod (2028) is ball-jointed to the connecting seat (203).

4. The antenna testing system according to claim 3, characterized in that: A threaded sleeve (2026) is provided on the cavity wall of the pump housing (2025) close to the fixed seat (201); the piston (2027) is in a circular ring shape; the interior of the piston rod (2028) is hollow; and the piston (2027) and the piston rod (2028) are both sleeved on the outside of the threaded sleeve (2026); The linear module comprises a screw rod (2024) threadedly arranged in a threaded sleeve (2026); one end of the screw rod (2024) extends out of the pump housing (2025) and forms a power connection with a motor (2023) arranged on a movable seat (2022).

5. An antenna testing system according to claim 1 or 3, characterized in that: The telescopic rod (204) comprises a plurality of telescopic joints (2041); the interior of the telescopic joint (2041) is hollow and one end is provided with an external step (2043) and the other end is provided with an internal step (2042); In two adjacent telescopic joints (2041), an external step (2043) of one telescopic joint (2041) is sleeved in an adjacent telescopic joint (2041), and a spring (2044) is provided between the external step (2043) of one telescopic joint (2041) and the internal step (2042) of the adjacent telescopic joint (2041); The plurality of telescopic joints (2041) are divided into a first telescopic joint, a tail telescopic joint and a middle telescopic joint located between the first telescopic joint and the tail telescopic joint. The end of the first telescopic joint is connected to the connection seat (203), and the end of the tail telescopic joint is connected to the probe (205) or the antenna to be tested.

6. The antenna testing system according to claim 5, characterized in that: The interior of the connection seat (203) is hollow, and a connection hole (2032) for connecting the inner cavity of the connection seat (203) with the first telescopic joint is provided on the connection seat (203). A connection head (2031) communicating with the inner cavity of the connection seat (203) is provided on the outer surface of the connection seat (203).

7. The antenna testing system according to claim 5, characterized in that: The inner wall of the built-in step (2042) and the outer wall of the external step (2043) are both provided with a buffer layer made of rubber or silicone.

8. The antenna testing system according to claim 1, characterized in that: The upper end surface of the test chamber (100) is provided with an inlet (101), and the lower end surface is provided with an outlet (102); A socket is provided on the side of the test chamber (100), a shielding gate (103) is inserted into the socket, the shielding gate (103) is hollow inside and two connection nozzles (104) are provided on the outer surface, and the fixing seats (201) of the two groups of test components (200) are respectively located on both sides of the shielding gate (103).

9. The antenna testing system testing method according to claim 7, characterized in that: The simulation of a user moving a mobile phone includes the following steps: Step 1: installing the antenna to be tested on the end of the piston rod (2028) of one set of test components (200), and installing the probe on the end of the piston rod (2028) of another set of test components (200); Step 2: injecting air into the telescopic rod (204) to extend the telescopic rod (204); Step three: the position of the end of the piston rod (2028) is changed by driving the air pump. Since the piston rod (2028) and the connecting seat (203) are ball-jointed, and the movable seat (2022) and the support (2021) are hinged, the connecting seat (203) can be caused to deflect by changing the positional relationship between the ends of the piston rod (2028) of the traction assembly (202). The deflection of the connecting seat (203) causes the telescopic rod (204) to deflect together, and the telescopic rod (204) causes the antenna to be tested to deflect together. Based on the fact that the linear velocity is equal to the product of the angular velocity and the radius, the antenna to be tested moves at high speed, thus simulating a scenario in which a user carries a mobile phone and moves at high speed.

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