A container type multi-probe near field OTA test anechoic chamber

Abstract

The utility model discloses a container formula multi -probe near field OTA test darkroom relates to test darkroom technical field, including container, the inside setting of container has the baffle, and the inside space of container is divided into shielded box chamber and operation box chamber through the baffle of container, and the inner wall of shielded box chamber is evenly welded with the shielded casing of container, and the one end of shielded casing is installed with wave -absorbing material away from container, and the inside installation of container has multi -probe ring stand. The device is through adopting the shielded main body of container, and the shielded casing is welded in the inside of container, and cooperates waterproof electromagnetic shielded door, wave -absorbing material, multi -probe ring stand, test equipment, realizes the basic function of testing, shortens the construction period of darkroom through the mode of early assembly, and can be hoisted through the lifting hole of container outside setting, solves the problem that large -size darkroom is difficult to move and transport in prior art background, and the convenience is stronger.

Description

Technical Field

[0001] This utility model relates to the field of anechoic chamber technology, and in particular to a containerized multi-probe near-field OTA testing anechoic chamber. Background Technology

[0002] With the rapid development of technologies such as 5G and the Internet of Things, the types and numbers of wireless communication devices are constantly increasing, and the requirements for device antenna performance are also becoming more stringent. OTA testing can simulate the transmission scenario of wireless signals in the air, comprehensively considering the impact of product structure, internal radiation interference, and antenna factors on wireless performance, providing valuable data for product optimization, and therefore has been widely used. Multi-probe near-field OTA testing anechoic chambers, as an important facility for OTA testing, can more efficiently and accurately measure the radiation performance of antennas, meeting the needs of modern wireless communication equipment research and development and production.

[0003] Existing multi-probe near-field over-the-air (OTA) anechoic chambers mainly consist of a shielding body, an electromagnetic shielding door, absorbing materials, a multi-probe ring frame, a fixture for mounting the object under test (DUT), and testing equipment. The shielding body is modular, with each shielding steel plate connected and secured with screws. This means that large-sized anechoic chambers cannot be moved or transported as a whole after assembly; relocation and transportation require disassembling each shielding steel plate and then disassembling the internal components. Consequently, the relocation and transportation of this type of anechoic chamber are limited.

[0004] Based on the above technical issues, a containerized multi-probe near-field OTA testing anechoic chamber is proposed. Summary of the Invention

[0005] In view of this, the main purpose of this utility model is to provide a containerized multi-probe near-field OTA testing anechoic chamber, which aims to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a containerized multi-probe near-field OTA testing anechoic chamber, comprising a container, wherein a partition is provided inside the container, and the internal space of the container is divided into a shielded chamber and an operating chamber by the partition. Shielding shells are welded to the inner walls of the shielded chambers of the container, and wave-absorbing material is installed at the end of the shielding shells away from the container. A multi-probe ring frame is installed inside the container, and a fixture for mounting the object under test is provided on the multi-probe ring frame. Testing equipment is installed inside the operating chamber.

[0007] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, its main features are:

[0008] This device uses a shipping container as the shielding body, with a shielding shell welded inside the container. Combined with a waterproof electromagnetic shielding door, absorbing materials, a multi-probe ring frame, and testing equipment, it achieves basic testing functions. The pre-assembly method shortens the construction cycle of the anechoic chamber, and it can be hoisted through the lifting holes set on the outside of the container. This solves the problem of large-size anechoic chambers being difficult to relocate and transport in the existing technology, making it highly convenient.

[0009] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the vertical structure of an embodiment of the present utility model;

[0011] Figure 2 This is a front structural diagram of an embodiment of the present utility model;

[0012] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0013] Explanation of reference numerals in the attached diagram: 1. Container; 2. Spacer; 3. Waterproof electromagnetic shielding door; 4. Absorbing material; 5. Multi-probe ring frame; 6. Mounting fixture for the object under test; 7. Testing equipment; 8. Container door. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0015] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0016] Please see Figures 1 to 3This utility model provides a containerized multi-probe near-field OTA testing anechoic chamber, including a container 1. A partition 2, made of steel plate, is installed inside the container 1. The partition 2 divides the internal space of the container 1 into a shielded chamber and an operating chamber. A shielding shell, also made of steel plate with a thickness of 2mm, is welded to the inner wall of the shielded chamber. A wave-absorbing material 4, made of wave-absorbing cotton, is installed at the end of the shielding shell facing away from the container 1. A multi-probe ring frame 5 is installed inside the container 1, and a test object mounting fixture 6 is mounted on the multi-probe ring frame 5. Both the multi-probe ring frame 5 and the test object mounting fixture 6 are fixed to the shielding shell by screws. The test object mounting fixture 6 is a common fixture in the prior art, and its shape and structure will not be described in detail here. A testing device 7 is installed inside the operating chamber. Lifting holes for hoisting are provided on the container 1.

[0017] Container 1 is equipped with a waterproof electromagnetic shielding door 3 outside the shielded compartment, and a container door 8 is equipped with a container door outside the operating compartment.

[0018] By using container 1 as the shielding body, welding a shielding shell inside container 1, and combining it with waterproof electromagnetic shielding door 3, wave-absorbing material 4, multi-probe ring frame 5, and testing equipment 7, the basic testing function is achieved. The construction cycle of the anechoic chamber is shortened by pre-assembly, and it can be hoisted through the hoisting holes set on the outside of container 1. This solves the problem of large-size anechoic chambers being difficult to relocate and transport in the existing technology background, and is highly convenient.

[0019] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A containerized multi-probe near-field OTA testing anechoic chamber, comprising a container (1), characterized in that: The container (1) is provided with a partition (2) inside. The internal space of the container (1) is divided into a shielded chamber and an operating chamber by the partition (2). The inner wall of the shielded chamber of the container (1) is welded with a shielded shell. The shielded shell is equipped with a wave-absorbing material (4) at the end away from the container (1). A multi-probe ring frame (5) is installed inside the container (1). A test fixture (6) is provided on the multi-probe ring frame (5). The operating chamber is equipped with a testing device (7).

2. The containerized multi-probe near-field OTA testing anechoic chamber according to claim 1, characterized in that: The shielding shell is made of steel plate.

3. The containerized multi-probe near-field OTA testing anechoic chamber according to claim 2, characterized in that: The thickness of the steel plate is 2mm.

4. The containerized multi-probe near-field OTA testing anechoic chamber according to claim 1, characterized in that: The microwave absorbing material is microwave absorbing cotton.

5. The containerized multi-probe near-field OTA testing anechoic chamber according to claim 1, characterized in that: The container (1) is equipped with a waterproof electromagnetic shielding door (3) located outside the shielded compartment.

6. The containerized multi-probe near-field OTA testing anechoic chamber according to claim 1, characterized in that: The container (1) is located outside the operating compartment and is equipped with a container door (8).

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