Antenna intermodulation index testing device

Abstract

The utility model relates to the technical field of communication, in particular to an antenna intermodulation index testing device which comprises a vibration bed body, the vibration bed body comprises a bottom plate, stand columns are arranged at the four corners of the bottom plate respectively, the upper ends of the stand columns are fixedly connected with air cylinders, and the free ends of guide rods of the air cylinders are hinged and fixed to the bottom plate; and the antenna trolley is used for bearing a base station antenna to be tested, and the antenna trolley is fixed on the bottom plate through a locking device arranged on the bottom plate. The utility model mainly aims to provide an antenna intermodulation index testing device which comprises a vibration bed body, the vibration bed body provides a vibration source and simulates real vibration for an antenna trolley which is arranged on the vibration bed body and bears a base station antenna through cylinders arranged at four corners, and the vibration frequency is adjusted by switching time through an electromagnetic valve. The structure for adjusting the pressure of the air inlet pressure gauge and adjusting the amplitude effect is simple, and the detection anti-interference capability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to an antenna intermodulation index testing device. Background Art

[0002] At present, domestic manufacturers' antennas' PIM (passive intermodulation distortion) is mostly tested by tapping. The tapping test is to generate mechanical vibration by tapping the antenna or its supporting structure to simulate the vibration environment under actual use conditions. However, the antenna is a complex structure composed of multiple components, including antenna elements, connectors, supporting structures, etc. Each component may have an impact on the performance of the antenna. The tapping test can only tap specific parts of the antenna, and cannot ensure that all components are subjected to sufficient force. This may result in the test results not being able to fully and accurately reflect the overall performance and quality of the antenna. The tapping test cannot simulate the actual vibration environment of the antenna during actual use.

[0003] Therefore, there is a need for an antenna intermodulation index testing device that can simulate real vibration. Utility Model Content

[0004] The main purpose of the utility model is to provide an antenna intermodulation index testing device, including a vibration bed. The vibration bed provides a vibration source for an antenna trolley carrying a base station antenna arranged on the vibration bed through cylinders arranged at the four corners, simulates real vibration, adjusts the vibration frequency by switching the time of an electromagnetic valve, and adjusts the amplitude effect by adjusting the pressure of the intake pressure gauge. The structure is simple and the detection and anti-interference ability is stronger.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Antenna intermodulation index test device, including:

[0007] A vibrating bed, the vibrating bed comprising a bottom plate, four corners of the bottom plate are provided with columns, the upper ends of the columns are fixedly connected to cylinders, and the free ends of the cylinder guide rods are hingedly fixed to the bottom plate;

[0008] The antenna trolley is used to carry the base station antenna to be tested, and the antenna trolley is fixed to the base plate by a locking device arranged on the base plate.

[0009] Furthermore, a fixed block is fixedly connected to the bottom plate frame, a sliding sleeve is fixedly connected to the fixed block, an inner ring of the sliding sleeve matches an outer ring of the column, and a free end of the guide rod of the cylinder is hingedly fixedly connected to the fixed block.

[0010] Furthermore, a ruler is fixed on the outer wall of the column.

[0011] Furthermore, a limiting bolt arranged toward the sliding sleeve is fixedly connected to the column.

[0012] Furthermore, the bottom plate is provided with a baffle with an opening at one end, the locking device is fixedly connected to the baffle, and a ramp plate is provided at the open end of the bottom plate.

[0013] Furthermore, the locking device is four locking cylinders which are divided into two groups and arranged opposite to each other.

[0014] Furthermore, a guide strip is provided on the ramp plate.

[0015] Furthermore, rollers are provided at the bottom of the antenna trolley, locking blocks cooperating with the locking device are provided at the sides of the antenna trolley, a plurality of supporting seats are provided at the top of the antenna trolley, and push handles are provided at both ends of the antenna trolley.

[0016] Furthermore, once the antenna trolley is provided with a wire fixing frame, a plurality of wire routing grooves are provided at the upper end and the lower end of the wire fixing frame, and the upper end and the lower end of the wire fixing frame are fixedly pressed and connected by an upper pressing rod and a lower pressing rod respectively.

[0017] Furthermore, an elastic band for fixing the base station antenna is fixedly connected to the support base.

[0018] The beneficial effects achieved by the utility model are:

[0019] 1. By setting the test device as a vibration bed and an antenna trolley, the vibration bed provides a vibration source for the bottom plate on the vibration bed through the up and down movement of the cylinder. The vibration frequency is adjusted by adjusting the switching time of the solenoid valve connected to the cylinder, and the vibration amplitude is adjusted by adjusting the intake pressure. It has a wide range of applications and stronger anti-interference ability. At the same time, the base station antenna is transported by the antenna trolley, making it more convenient and quick to carry the base station antenna.

[0020] Second, by arranging a sliding sleeve to be sleeved on the column, the movement transmitted by the extension and retraction of the cylinder guide rod is more stably transmitted, and the test effect is more stable.

[0021] 3. By setting a ruler, the actual movement range of the base plate can be effectively observed.

[0022] 4. By setting the limit bolt, the cylinder rise range can be easily limited to improve data stability.

[0023] 5. A ramp is provided to facilitate pushing the antenna trolley onto the vibrating bed, and at the same time, the position is limited by a fence.

[0024] 6. A locking block is set on the antenna trolley to lock it in conjunction with the locking cylinder on the vibration bed to prevent the antenna trolley from other displacements during vibration.

[0025] 7. The antenna cable can be effectively fixed in position by setting up a cable fixing rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the utility model.

[0028] Figure 2 Schematic diagram of the vibrating bed structure.

[0029] Figure 3 Schematic diagram of the structure of loading base station antenna (cables not shown) on the antenna cart.

[0030] Figure 4 This is a schematic diagram of the structure of the vibrating bed column. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] like Figures 1 to 4 As shown, the antenna intermodulation index test device includes:

[0033] A vibrating bed body 10, the vibrating bed body 10 comprises a bottom plate 101, and columns 102 are arranged at four corners of the bottom plate 101. The upper ends of the columns 102 are fixedly connected to vertically arranged cylinders 103, and the free ends of the guide rods of the cylinders 103 are hingedly fixed to the bottom plate 101;

[0034] The antenna trolley 20 is used to carry the base station antenna to be tested. The antenna trolley 20 is fixed on the bottom plate 101 through a locking device 104 arranged on the bottom plate 101 .

[0035] Specifically, by setting the test device as a vibration bed 10 and an antenna trolley 20, the vibration bed 10 provides a vibration source for the bottom plate 101 on the vibration bed 10 through the up and down movement of the guide rod of the vertically arranged cylinder 103, and the vibration frequency is adjusted by adjusting the switching time of the solenoid valve connected to the cylinder 103, and the vibration amplitude is adjusted by adjusting the intake pressure. It has a wide range of applications and stronger anti-interference ability. At the same time, the base station antenna is transported by the antenna trolley 10, making it more convenient and quick to carry the base station antenna.

[0036] Furthermore, a fixed block 1011 is fixedly connected to the frame of the base plate 101, and a sliding sleeve 1012 is fixedly connected to the fixed block 1011. The inner ring of the sliding sleeve 1012 matches the outer ring of the column 102. The free end of the guide rod of the cylinder 103 is hinged and fixedly connected to the fixed block 1011. The sliding sleeve 1012 is arranged to be sleeved on the column 102, so that the movement transmitted by the extension and retraction of the guide rod of the cylinder 103 is more stably transmitted and the test effect is more stable.

[0037] Furthermore, in order to effectively observe the actual movement range of the bottom plate, a scale 1021 is fixed to the outer wall of the column 102 .

[0038] Furthermore, in order to ensure the stability of the movement range, a limiting bolt 1022 arranged toward the sliding sleeve 1012 is fixedly connected to the column 102 .

[0039] Furthermore, the bottom plate 101 is provided with a baffle 1013 with an opening at one end, the locking device 104 is fixedly connected to the baffle 1013 , and a ramp plate 1014 is provided at the open end of the bottom plate 101 .

[0040] Furthermore, the locking device 104 is four locking cylinders which are divided into two groups and arranged opposite to each other.

[0041] Furthermore, a guide bar 10141 is provided on the ramp plate 1014 , so that the trolley carrying the base station antenna can be pushed onto the bottom plate 101 more easily.

[0042] Furthermore, a roller 201 is provided at the bottom of the antenna trolley 20, a locking block 202 cooperating with the locking device 104 is provided on the side of the antenna trolley 20, a plurality of support seats 203 are provided on the upper part of the antenna trolley 20, and pushers 204 are provided at both ends of the antenna trolley 20. The locking block 202 is provided on the antenna trolley to cooperate with the locking cylinder on the vibrating bed for locking to prevent the antenna trolley from other displacements during vibration. At the same time, the pusher 204 is provided to facilitate pushing the antenna trolley.

[0043] Furthermore, in order to effectively limit and fix the electrical connector and prevent the test cable from being damaged due to vibration, a wire fixing frame 205 is provided at one end of the antenna trolley 20, and a plurality of wiring grooves 2051 are provided at the upper and lower ends of the wire fixing frame 205. The upper and lower ends of the wire fixing frame 205 are fixedly pressed and connected by an upper pressure rod 2052 and a lower pressure rod 2053 respectively.

[0044] Furthermore, an elastic band 2031 for fixing the base station antenna is fixedly connected to the support base 203 .

[0045] Specifically, the wheels of the antenna trolley are equipped with a self-locking device. After the trolley is placed in place, the tester will step on the self-locking device to ensure that the trolley does not move. When in use, the test device is set in a dark room, and the pneumatic source is set outside the dark room (controlled by a PLC). In addition, the dark room also includes a shielding door, and the inner wall of the dark room is covered with absorbing material. Through this setting, the distortion of the test results can be avoided and the accuracy of the test results can be ensured.

Claims

1. Antenna intermodulation index test device, characterized in that: include, A vibrating bed (10), the vibrating bed (10) comprising a bottom plate (101), four corners of the bottom plate (101) being provided with upright posts (102), the upper ends of the upright posts (102) being fixedly connected to cylinders (103), the free ends of guide rods of the cylinders (103) being hingedly fixed to the bottom plate (101); An antenna trolley (20) is used to carry a base station antenna to be tested, and the antenna trolley (20) is fixed to the base plate (101) via a locking device (104) provided on the base plate (101).

2. The antenna intermodulation index testing device according to claim 1, characterized in that: A fixed block (1011) is fixedly connected to the frame of the bottom plate (101), a sliding sleeve (1012) is fixedly connected to the fixed block (1011), an inner ring of the sliding sleeve (1012) matches an outer ring of the column (102), and a free end of a guide rod of the cylinder (103) is hingedly fixedly connected to the fixed block (1011).

3. The antenna intermodulation index testing device according to claim 2, characterized in that: A scale (1021) is fixed to the outer wall of the column (102).

4. The antenna intermodulation index testing device according to claim 2 or 3, characterized in that: A limiting bolt (1022) disposed toward the sliding sleeve (1012) is fixedly connected to the upright column (102).

5. The antenna intermodulation index testing device according to claim 1, characterized in that: The bottom plate (101) is provided with a fence (1013) with an opening at one end, the locking device (104) is fixedly connected to the fence (1013), and the open end of the bottom plate (101) is provided with a ramp plate (1014).

6. The antenna intermodulation index testing device according to claim 5, characterized in that: The locking device (104) comprises four locking cylinders which are divided into two groups and arranged opposite to each other.

7. The antenna intermodulation index testing device according to claim 5, characterized in that: A guide strip (10141) is provided on the ramp plate (1014).

8. The antenna intermodulation index testing device according to claim 1, characterized in that: A roller (201) is provided at the bottom of the antenna trolley (20), a locking block (202) cooperating with the locking device (104) is provided on the side of the antenna trolley (20), a plurality of support seats (203) are provided on the top of the antenna trolley (20), and push handles (204) are provided at both ends of the antenna trolley (20).

9. The antenna intermodulation index testing device according to claim 1 or 8, characterized in that: Once the antenna trolley (20) is provided with a wire fixing frame (205), the upper end and the lower end of the wire fixing frame (205) are provided with a plurality of wire routing grooves (2051), and the upper end and the lower end of the wire fixing frame (205) are respectively fixedly pressed and connected via an upper pressing rod (2052) and a lower pressing rod (2053).

10. The antenna intermodulation index testing device according to claim 8, characterized in that: An elastic band (2031) for fixing the base station antenna is fixedly connected to the support base (203).

Images