CN212301695U

CN212301695U - Miniaturized millimeter wave radio frequency signal test platform

Info

Publication number: CN212301695U
Application number: CN202020197258.6U
Authority: CN
Inventors: 李乐; 金烨; 赵鑫
Original assignee: Beijing Science And Technology Ruihang Electronic Technology Co Ltd
Current assignee: Beijing Science And Technology Ruihang Electronic Technology Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2021-01-05
Anticipated expiration: 2030-02-21

Abstract

The utility model provides a miniaturized millimeter wave radio frequency signal testing platform, which comprises a near-end box body platform, a far-end box body and a middle box body; the near-end box body, the far-end box body and the two ends of the middle box body form an ideal non-reflection electromagnetic environment. The three are spliced by adopting the splicing modules, the length of the middle box body can be increased or decreased according to requirements, and the convenience, compactness and flexibility of the test platform can be improved; the determinand is the whole machine of millimeter wave radar, presss from both sides with the help of the test elbow, can be with the determinand almost divide the installation of difference at near-end platform, and the signal simulator utilizes the camera bellows to fix on the distal end platform from the fixed orifices in area, towards the determinand, launches or receives the millimeter wave, adopts the utility model discloses a test platform can improve efficiency of software testing, improves the test accuracy.

Description

Miniaturized millimeter wave radio frequency signal test platform

Technical Field

The utility model belongs to the technical field of the millimeter wave, concretely relates to miniaturized millimeter wave radio frequency signal test platform.

Background

Millimeter waves are electromagnetic waves distributed in a wide frequency range from 30GHz to 300GHz and have been widely applied in the fields of radio astronomy, microwave remote sensing, weather and the like. Compared with light waves, the millimeter waves are not influenced by the day and night and the severe weather, and all-weather work in all seasons is realized. Compared with microwaves with lower frequency, the millimeter waves have wider bandwidth and shorter wavelength, so the device has smaller size and narrower wave beam, and the system index can be improved.

The millimeter wave radar is the development direction of radar technology from military to civil with the frequency from low to high. With the development and progress of radar technology, millimeter wave radars are beginning to be applied to a plurality of civil industries such as automotive electronics, unmanned aerial vehicles, intelligent transportation, human safety detection and the like. At present, the mainstream millimeter wave radar products in the market are concentrated on 24GHz, 77GHz and 90 GHz. With the improvement of working frequency, the device is smaller, and the miniaturization of the whole system is easy to realize; the gain of the antenna is relatively higher, and the beam is narrower, so that the detection distance is longer, and the angular resolution of the target is higher; the system has wider bandwidth, so that the distance resolution and the speed resolution are higher. The civil products can be balanced among volume, weight, performance and cost, and the millimeter wave radar with the advantages provides necessary degrees of freedom in the aspects.

The millimeter wave radar comprises an antenna, a radio frequency circuit, a signal processor and a display terminal. The working principle is that a transmitting antenna transmits a known waveform of a millimeter wave band, and a receiving antenna receives the waveform modulated by a target. The radio frequency circuit completes the control of the transmission and the reception, down-converts the received signals into intermediate frequency signals with lower frequency and outputs the intermediate frequency signals to the signal processor. And the signal processor calculates the distance, the direction and the speed of the target according to a preset algorithm and outputs the information to the display terminal. In the display terminal, the information is displayed in a manner easily accepted by the user, and reasonable perception of the targeted information is achieved.

The millimeter wave testing technology is a key factor for the productization and the batch production of the millimeter wave radar. Millimeter wave radar systems are very complex, and each production link has a large number of tests. In the tests, the test contents of the radio frequency antenna and the signal processor are different, and the test contents of the subsystem and the whole system are greatly different, so that the test efficiency of one set of radar is too low, the test time is too long, and the cost is higher due to the characteristics. Once the radar starts to be produced in mass, especially entering the consumer electronics industry, the optimization of the testing technology becomes a difficult problem to be solved.

In the prior art, testing of rf antennas is designed in microwave anechoic chambers, using far field conditions, compact field devices, or near field scanning devices. Compact field and near field scanning devices are inefficient but extremely costly and are not suitable for batch testing. Therefore, the millimeter wave test platform is designed flexibly, has a small and exquisite structure, improves the alignment precision of the object to be tested and the remote module, simplifies the installation of the object to be tested and the module, realizes the reconstruction of the camera bellows, and improves the test efficiency and the flexibility.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a radio frequency signal testing platform, which can increase the convenience, compactness and flexibility of the testing platform.

A millimeter wave radio frequency signal test platform comprises a near-end box body (3), a far-end box body (4) and a middle box body; the near-end box body (3) and the far-end box body (4) are cubes with openings at one end and are composed of 5 splicing modules; the middle box body comprises at least one splicing unit; each splicing unit is a cube with openings at two ends and formed by splicing 4 splicing modules; the middle box body is spliced between the near-end box body ()3 and the far-end box body (4) to form a complete test environment.

The preferred sets up a fixed size's near-end opening (2) on the concatenation module in near-end box (3) outside, and size precision is the millimeter level for the installation millimeter wave radar that awaits measuring.

Preferably, an elbow clamp (1) is further mounted on the same splicing module with the near-end opening (2) and used for fixing the millimeter wave radar.

Preferably, a fixed-size distal opening (5) is formed in the splice module outside the distal box (4), and is sized to only allow entry of the signal simulator horn.

Preferably, a far-end fixing tool (6) is fixedly connected to the splicing module on the outer side of the far-end box body (4).

Further, the device also comprises a flat plate type splicing tool.

Furthermore, the device also comprises a right-angle splicing tool.

The utility model discloses following beneficial effect has:

Drawings

FIG. 1 is a schematic front view of a proximal housing;

FIGS. 2(a), (b) and (c) are front, left and top views, respectively, of the distal housing;

FIG. 3 is a schematic structural diagram of a splice module;

FIGS. 4(a) and 4(b) are schematic diagrams of two combination tools of a splicing module, respectively;

fig. 5 is a schematic structural diagram of the testing platform of the present invention.

Wherein, 1-elbow clip; 2-a proximal opening; 3-a near-end box body; 4-a distal box; 5-distal opening; 6-fixing the tool at the far end.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings by way of examples.

The millimeter wave radio frequency signal testing platform of the utility model, as shown in fig. 5, comprises a near-end box body 3, a far-end box body 4 and a middle box body;

the near-end box body 3 and the far-end box body 4 are both cubes with openings at one end and composed of 5 splicing modules; the middle box body comprises at least one splicing unit; each splicing unit is a cube with openings at two ends and formed by splicing 4 splicing modules; the middle box body is spliced between the near-end box body 3 and the far-end box body 4 to form a complete testing environment.

As shown in figure 1, set up a fixed size's near-end opening 2 on the concatenation module in the near-end box 3 outside, size precision is the millimeter level for fixed mounting determinand (millimeter wave radar), can guarantee like this that the determinand can keep the position unanimous when installing on the near-end platform, the angle is unanimous.

Still install an elbow through the fixed orifices on same concatenation module and press from both sides 1 for the fixed determinand guarantees that the determinand fixes and can not fall on near-end platform.

As shown in fig. 2(a), (b) and (c), a fixed-size far-end opening 5 is arranged on the splicing module outside the far-end box 4, and the size of the far-end opening only allows a signal simulator horn to enter, so that a far-end platform is ensured not to generate a factor causing interference to the test ring. The outer side of the splicing module is also fixedly connected with a far-end fixing tool 6 for supporting external equipment of the signal simulator loudspeaker.

As shown in fig. 3, the splicing module is a square plate, the wave-absorbing material is laid on the inner side of the splicing module, the outer frame of the splicing module is an insulating outer frame, and the square plate with the same size is the most key point for realizing flexibility and simplicity of the test platform. Mounting holes are formed in the edges of the splicing modules; as shown in fig. 4(b), four splicing modules are spliced into a splicing unit with openings at two ends by using a right-angle splicing tool, and when the length of the middle box body needs to be extended, as shown in fig. 4(a), the splicing units are spliced together by using a flat-plate splicing tool.

The wave-absorbing material is arranged on the inner wall of the splicing module to form a section of non-reflection electromagnetic environment; the wave-absorbing material adopts a millimeter wave pointed cone array, the section size of the unit pointed cone is 1X1cm, and the height is 2 cm. Therefore, an ideal non-reflection electromagnetic environment can be formed in the darkroom, and the certainty of the test result is increased.

The splicing module is provided with designed mounting holes which are matched with screws for assembly. All hole sites are fixed, so that the consistency of multiple installation can be ensured.

The splicing modules forming the barrel body of the camera bellows are all consistent in size, the camera bellows body can be spliced according to requirements, and the length of the camera bellows body is changed along with the requirements. When the experiment needs to increase the darkness or shorten the length of the dark box, the experiment can be realized by only increasing or decreasing the splicing units,

the specification of the middle box body is generally 56 × 112cm, and the length of the dark box can be lengthened or shortened according to the test requirement. The width is basically consistent with the width of the debugging table, so that the testing platform can be completely and conveniently built on a table in a laboratory.

The splicing module is made of special light materials, is easy to customize and firm, and ensures the stability of the test environment.

In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A millimeter wave radio frequency signal test platform is characterized by comprising a near-end box body (3), a far-end box body (4) and a middle box body; the near-end box body (3) and the far-end box body (4) are cubes with openings at one end and are composed of 5 splicing modules; the middle box body comprises at least one splicing unit; each splicing unit is a cube with openings at two ends and formed by splicing 4 splicing modules; the middle box body is spliced between the near-end box body ()3 and the far-end box body (4) to form a complete test environment.

2. The millimeter wave radio frequency signal test platform according to claim 1, wherein a near-end opening (2) with a fixed size is arranged on the splicing module outside the near-end box body (3), and the size precision is millimeter level, and is used for installing a millimeter wave radar to be tested.

3. The millimeter wave radio frequency signal test platform according to claim 2, wherein an elbow clamp (1) is further mounted on the same splicing module with the near-end opening (2) for fixing the millimeter wave radar.

4. A millimeter wave radio frequency signal test platform according to claim 1, characterized in that a fixed size of the far end opening (5) is provided on the splice module outside the far end box (4), and the size is only to allow the signal simulator horn to enter.

5. The millimeter wave radio frequency signal test platform according to claim 1, wherein a far-end fixing tool (6) is fixedly connected to the splicing module at the outer side of the far-end box body (4).

6. The millimeter wave radio frequency signal test platform of claim 1, further comprising a flat panel type splicing tool.

7. The millimeter wave radio frequency signal testing platform of claim 1, further comprising a right angle type splicing tool.