CN215728461U

CN215728461U - LTE connection antenna folding and stretching device used in OTA test of 5G terminal antenna

Info

Publication number: CN215728461U
Application number: CN202121969482.3U
Authority: CN
Inventors: 涂锂程; 陈秋东; 顾嘉宇
Original assignee: Fu Zhou Internet Of Things Open Lab
Current assignee: Fu Zhou Internet Of Things Open Lab
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-02-01
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses an LTE (long term evolution) connection antenna folding and stretching device used in OTA (over the air) test of a 5G terminal antenna, which comprises a fixed seat, a multi-branch-section support frame, a telescopic sleeve and an LTE connection antenna, wherein the fixed seat is installed and fixed at a position which does not generate electromagnetic wave reflection in a darkroom, the multi-branch-section support frame stretches and folds in space, one end of the multi-branch-section support frame is rotatably connected with the fixed seat, the fixed end of the telescopic sleeve is rotatably connected with the other end of the multi-branch-section support frame, and the LTE connection antenna is rotatably connected with the telescopic end of the telescopic sleeve. The utility model improves the stability of the testing device while improving the testing efficiency, is easier to maintain the stability of the testing device and avoids the influence caused by human factors.

Description

LTE connection antenna folding and stretching device used in OTA test of 5G terminal antenna

Technical Field

The utility model relates to the technical field of 5G terminal testing, in particular to a folding and stretching device for an LTE connection antenna in OTA (over the air) testing of a 5G terminal antenna.

Background

The development of 5G (5 th generation mobile communication) technology is more and more 5G terminals need to perform performance detection, wherein the testing of the 5G terminal OTA performance is more and more important, which is related to the 5G terminal antenna OTA performance evaluation method and the important link for obtaining the quality of the terminal performance parameters. The 5G NR (New Radio) technology includes both SA (independent networking) and NSA (non-independent networking). The difference between the two is that NSA networking requires a 4G, 5G shared core network. With the construction of 5G networks, most operators will gradually move to SA networking, or adopt a SA/NSA hybrid networking mode. In the actual process of establishing connection between the terminal and the base station, the NSA networking needs to establish connection with the base station by adopting 4G LTE first and then connect to the 5G NR, and when the SA terminal establishes connection with the base station, the connection is directly established independently with the 5G NR, so that LTE does not need to be passed. As shown in fig. 1, the terminal is connected to the core network, NSA uses a connection method in which LTE and NR coexist, and SA uses a terminal independently connected to the core network.

In the conventional active test of the OTA antenna, an analog base station is generally used to connect a connection antenna and a detection antenna in an anechoic chamber, wherein the connection antenna mainly performs a signal connection function, and the detection antenna needs to perform accurate detection on signals besides maintaining a connection link. Fig. 2 is a schematic diagram of a mainstream multi-probe OTA darkroom distributed system commonly used in the prior art. For example, In the process of testing the terminal antenna TRP, the connection antenna is connected as a base station simulator downlink connection (Port 2, Out), while the probe antenna is connected to the base station simulator uplink (Port 1, In) through a switch. The base station simulator outputs signals through the connecting antenna, the DUT carries out corresponding response of connection establishment after receiving base station signals, the detecting antenna enters the base station simulator after receiving the signals of the DUT, therefore, the DUT can establish connection with the base station simulator, and the base station simulator can obtain the radiation power of the DUT after receiving the signal of the detecting antenna. And measuring the radiation power TRP of the DUT. The test procedure for the receive sensitivity TIS of the DUT is similar, as will be appreciated by those skilled in the art.

The difference between the OTA test procedure of the 5G terminal and the prior art is that a connection antenna needs to be added for 4G LTE connection during the test procedure of the 5G NSA. The 5G SA does not need to be additionally provided with a connecting antenna connected with the 4G LTE, so that the testing device of the 5G SA is the same as the conventional device. As shown in fig. 3, it is a schematic diagram of a distributed 5G NSA test system based on multiple probes. As shown in fig. 3, in addition to the NR connection antenna in the middle of the center turntable, one connection antenna is added for connection of 4G LTE.

Since the 5G NSA test requires a new connection antenna to be placed in the darkroom, and in order to keep the connection of the system stable, the connection antenna must be in the visual field of the terminal (no shielding is arranged in the middle), so that the signal cannot be shielded by the absorbing material in the darkroom. In the process of testing, due to the fact that a new detection antenna is introduced into the radiation electromagnetic wave of the DUT, and metal materials such as a support frame of the antenna are exposed in front of the wave-absorbing material, reflection of the electromagnetic wave is inevitably caused, the purity of the electromagnetic environment in a darkroom is influenced to a certain degree, and a test result is influenced to a certain degree. The operation of the prior art is that when testing NSA, the connecting antenna and the support frame of LTE are put to suitable position to do certain fixed, need to accomodate this connecting antenna behind the absorbing material so can avoid it to influence electromagnetic environment in the darkroom behind the back when testing SA or the non-5G NSA's of 2G ~4G test item, guarantee the test accuracy.

In summary, in the prior art, when testing 5G NSA, the antenna connected to LTE needs to be fixedly installed at a suitable position, and when testing non-NSA, the antenna connected to LTE needs to be stored in an area that does not affect the purity of the electromagnetic environment in a darkroom, such as behind a darkroom wave-absorbing material. The manual installation and disassembly in the process cause low efficiency, and the position of the antenna to be installed needs to be positioned in the process, so that the relative consistency of each test environment is ensured, which has greater challenge for considering operation; thirdly, the equipment is easily damaged in the manual assembling and disassembling process.

Disclosure of Invention

The utility model aims to provide an LTE connection antenna folding and stretching device used in OTA test of a 5G terminal antenna.

The technical scheme adopted by the utility model is as follows:

the utility model provides a folding telescoping device of LTE connection antenna for in 5G terminal antenna OTA test, it includes the fixing base, many branches section support frame, telescopic sleeve and LTE connection antenna, the fixing base installation is fixed and is not produced the electromagnetic wave reflection's in the darkroom position, many branches section support frame extends and folds in the space, the one end and the fixing base rotatable coupling of many branches section support frame, telescopic sleeve's stiff end is rotated with the other end of many branches section support frame and is connected, LTE connection antenna rotatable coupling is at telescopic sleeve's flexible end.

Furthermore, the fixed seat is arranged behind the wave-absorbing material, so that electromagnetic wave reflection cannot be generated. The mounting point of the fixing seat can be on a bracket of the darkroom detection antenna or other suitable places.

Furthermore, the LTE connection antenna is rotatably connected to the telescopic end of the telescopic sleeve through a spherical movable part.

Furthermore, the fixing seat is provided with a plurality of screw holes for installation and fixation.

Furthermore, the fixed end of the telescopic sleeve is rotatably connected with the other end of the multi-branch supporting frame through a first supporting frame connecting shaft.

Furthermore, the multi-branch-section support frame comprises more than two support branches which are connected in sequence; the support branches are connected in a relative rotation mode through a second support connecting shaft.

Furthermore, one end of the multi-branch supporting frame is rotatably connected with a branch base which is vertically fixed on the fixed seat through a third supporting frame connecting shaft.

Furthermore, the first support connecting shaft, the second support connecting shaft, the third support connecting shaft and the spherical movable part are all provided with angle alignment scales, the telescopic end of the telescopic sleeve is provided with length alignment scales, and the angle alignment scales and the length alignment scales are used for aligning the placing positions of the LTE connection antenna when the angle is placed.

Furthermore, electric devices are arranged in the first support connecting shaft, the second support connecting shaft, the third support connecting shaft, the telescopic sleeve and the spherical movable part, are connected with the background control host, and control the support frame to contract or expand to a determined position through a program on the control host.

Furthermore, the control host controls the LTE connection antenna to be unfolded or folded, different positions are recorded, and then position recording information is automatically called according to different test requirements so that the antenna can be unfolded to the required position.

By adopting the technical scheme, when NSA test is carried out, the support frame of the LTE connecting antenna is opened, the telescopic rod is controlled, the LTE connecting antenna is extended, the angle of the LTE connecting antenna is controlled, the LTE connecting antenna is aligned with the position of a DUT (device under test) in the center of the central turntable, and the position is recorded; when carrying out non NSA test, can fold the shrink with the support frame of LTE connection antenna, all shrink wave-absorbing material rear suitable position with whole support frame and LTE connection antenna, because wave-absorbing material can absorb electromagnetic energy, can guarantee this part facility like this and can not influence test system because of causing signal reflection.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings and the detailed description;

fig. 1 is a schematic diagram illustrating a relationship between NSA non-independent networking and SA independent networking in the prior art;

FIG. 2 is a schematic diagram of a mainstream, multi-probe OTA darkroom distributed system as is common in the prior art;

FIG. 3 is a schematic diagram of a multi-probe distributed 5G NSA-based test system in the prior art;

FIG. 4 is a schematic structural diagram of an LTE connection antenna folding and telescoping device used in OTA test of a 5G terminal antenna according to the present invention;

FIG. 5 is a schematic diagram of the installation position of the LTE connection antenna and the darkroom;

fig. 6 is a schematic view of alignment scales of the folding telescopic device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

As shown in one of fig. 4 to 6, the utility model discloses an LTE connection antenna folding and telescoping device used in OTA test of a 5G terminal antenna, which comprises a fixed seat 10, a multi-branch support frame 50, telescoping sleeves (3, 4) and an LTE connection antenna 1, wherein the fixed seat 10 is installed and fixed at a position which does not generate electromagnetic wave reflection in a darkroom, the multi-branch support frame 50 extends and folds in space, one end of the multi-branch support frame 50 is rotatably connected with the fixed seat 10, the fixed end 4 of the telescoping sleeve is rotatably connected with the other end of the multi-branch support frame 50, and the LTE connection antenna 1 is rotatably connected with the telescoping end 3 of the telescoping sleeve.

Further, the fixed seat 10 is installed behind the wave-absorbing material 40, so that no electromagnetic wave reflection occurs. The mounting point of the fixing base 10 may be on the bracket 31 of the darkroom detecting antenna 30, or may be other suitable places.

Further, the LTE connection antenna 1 is rotatably connected to the telescopic end 3 of the telescopic sleeve through a spherical movable part 2. Wherein the spherical movable part 2 is embedded into the telescopic parts of the telescopic sleeves (3, 4), and the spherical movable part is connected with the LTE connecting antenna 1 through a connecting rod.

Further, the fixing base 10 is provided with a plurality of screw holes 11 for fixing.

Further, the fixed end 4 of the telescopic sleeve is rotatably connected with the other end of the multi-branch supporting frame 50 through a first supporting frame connecting shaft 5.

Further, the multi-branch supporting frame 50 comprises more than two support branches (6 and 8), and the more than two support branches (6 and 8) are connected in sequence; the support branches (6 and 8) are connected in a relative rotation way through a second support connecting shaft 7. Wherein, the mutual angle between the connecting shafts can be realized by matching more than two bracket branches (6 and 8) with the connecting shafts, and the bracket can be ensured to be extended and folded in space.

Further, one end of the multi-branch supporting frame 50 is rotatably connected with a branch base 9 vertically fixed on the fixed seat 10 through a third supporting frame connecting shaft.

As shown in fig. 5, the LTE connection antenna 1 and the installation position in the darkroom are schematically illustrated, in which one circle is a detection antenna, the center part of the detection antenna is a central turntable 20, the lower part of the circle is a support 31 of the detection antenna 30, and a wave-absorbing material 40 is laid under the detection antenna for absorbing electromagnetic waves and preventing the reflection of the electromagnetic waves caused by the support 31 of the detection antenna. It should be noted that the components shown in this figure are only local to the probe antenna and the central turntable in the test system, and this part of the actual test system needs to be installed in a completely anechoic chamber.

The LTE-connected antenna is connected to a fixed point through a telescopic support frame, and the fixed point can be on a support of a darkroom detection antenna or other suitable places. The fixed point needs to be arranged behind the wave-absorbing material 40, so that electromagnetic wave reflection cannot be generated; when NSA test is carried out, the support frame of the LTE connecting antenna 1 is opened, the telescopic rod is controlled, the LTE connecting antenna 1 is extended, the angle of the LTE connecting antenna 1 is controlled, the LTE connecting antenna 1 is aligned to the position of a DUT (device under test) in the center of the central turntable, and the position is recorded; when carrying out non NSA test, can fold the support frame that LTE connects antenna 1 and contract, connect antenna 1 with whole support frame and LTE and all contract to absorbing material 40 rear suitable position, because absorbing material 40 can absorb electromagnetic energy, can guarantee this part facility like this and can not influence test system because of causing signal reflection.

Further, as another embodiment, the first support connecting shaft 5, the second support connecting shaft 7, the third support connecting shaft and the spherical movable part 2 are all provided with angle alignment scales, the telescopic end 3 of the telescopic sleeve is provided with length alignment scales, and the angle alignment scales and the length alignment scales are used for aligning the placing positions of the LTE connection antenna 1 when the angle is placed. The above-described holder connecting shaft and the spherical movable member 2 are provided with alignment scales. The alignment scale is used for alignment confirmation of the placement position of the LTE connecting antenna 1 when the angle is placed, for example, when a certain terminal NSA is tested, the position and the angle of the LTE connecting antenna are placed at an X point, at the moment, the mark position of the LTE connecting antenna 1X can be recorded by recording each rotating shaft and the movable scale value, and the mark position can be restored to the recorded position when the test of the same terminal is repeated next time, so that the consistency of the system before and after the test is ensured, and the problem that the system test cannot trace the source due to the change of the test system is not influenced;

the first support connecting shaft 5, the second support connecting shaft 7 and the third support connecting shaft are connecting mechanisms among the support frame branches, and the mechanisms can move to realize movable torsion among the branches. And the connecting shaft is provided with a movable resistance adjusting mechanism, and the adjusting mechanism can realize the rotation resistance of the connecting shaft. Adjusting the resistance can ensure that the hand of a person can be adjusted freely and the position of the antenna is stable and does not move after the hand is loosened.

As shown in fig. 6, all the rotating shaft parts are provided with scales, namely an angle alignment scale 10-1 of the spherical movable part 2, a length alignment scale 10-2 of the telescopic end 3 of the telescopic sleeve, an angle alignment scale 10-3 of the first support connecting shaft 5, an angle alignment scale 10-4 of the second support connecting shaft 7, an angle alignment scale 10-5 of the third support connecting shaft and an angle alignment scale 10-6 arranged on the periphery of the branch base 9; 10-1 to 10-6 are all schematic diagrams of the arrangement of the scales corresponding to the movable parts. In practical use, the relative position of the antenna can be marked by recording scale values according to requirements.

Further, as an embodiment, electric devices are arranged in the first support connecting shaft 5, the second support connecting shaft 7, the third support connecting shaft, the telescopic sleeves (3 and 4) and the spherical movable part 2, and the electric devices are connected with a background control host and control the support frame to contract or expand to a determined position through a program on the control host. The control host controls the LTE connecting antenna 1 to be unfolded or folded, different positions are recorded, and then position recording information is automatically called according to different test requirements so that the antenna can be unfolded to the required position. The support connecting shaft and the spherical movable part 2 are provided with electric devices, the support frame can be controlled by a program to be contracted or expanded to a determined position, and the LTE connecting antenna 1 can be automatically expanded or contracted by testing under the control of a control system. And different positions can be recorded according to the system, and the position recording information is automatically called according to different test requirements, so that the antenna is unfolded to the required position.

It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims

1. The utility model provides a be arranged in 5G terminal antenna OTA test LTE connects folding telescoping device of antenna which characterized in that: the novel multifunctional antenna comprises a fixed seat, a multi-branch-section supporting frame, a telescopic sleeve and an LTE connecting antenna, wherein the fixed seat is fixedly arranged at a position which does not generate electromagnetic wave reflection in a darkroom, the multi-branch-section supporting frame extends and folds in space, one end of the multi-branch-section supporting frame is rotatably connected with the fixed seat, the fixed end of the telescopic sleeve is rotatably connected with the other end of the multi-branch-section supporting frame, and the LTE connecting antenna is rotatably connected with the telescopic end of the telescopic sleeve.

2. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 1, characterized in that: the fixing seat is arranged behind the wave-absorbing material.

3. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 1, characterized in that: the fixing seat is provided with a plurality of screw holes for installation and fixation.

4. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 1, characterized in that: the LTE connecting antenna is rotatably connected to the telescopic end of the telescopic sleeve through a spherical movable part.

5. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 4, characterized in that: the fixed end of the telescopic sleeve is rotatably connected with the other end of the multi-branch supporting frame through a first supporting frame connecting shaft.

6. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 5, wherein: the multi-branch-section support frame comprises more than two support branches which are connected in sequence; the support branches are connected in a relative rotation mode through a second support connecting shaft.

7. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 6, characterized in that: one end of the multi-branch supporting frame is rotatably connected with a branch base which is vertically fixed on the fixed seat through a third supporting frame connecting shaft.

8. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 7, characterized in that: the first support connecting shaft, the second support connecting shaft, the third support connecting shaft and the spherical movable part are internally provided with movable resistance adjusting mechanisms, and the movable resistance adjusting mechanisms control the rotating resistance of the connecting shafts to ensure that the antenna is free to adjust by hand and stable and does not move after the hand is loosened.

9. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 7, characterized in that: the first support connecting shaft, the second support connecting shaft, the third support connecting shaft and the spherical movable part are all provided with angle alignment scales, the telescopic end of the telescopic sleeve is provided with length alignment scales, and the angle alignment scales and the length alignment scales are used for aligning the placing positions of the LTE connection antenna when the angle is placed.

10. The LTE connection antenna folding and telescoping device used in OTA test of 5G terminal antenna in claim 7, characterized in that: electric devices are arranged in the first support connecting shaft, the second support connecting shaft, the third support connecting shaft, the telescopic sleeve and the spherical movable part, and the electric devices are connected with the background control host and control the support frame to contract or expand to a determined position through a program on the control host.