CN215116529U

CN215116529U - Compact range antenna testing device based on 3D multi-probe

Info

Publication number: CN215116529U
Application number: CN202121413300.4U
Authority: CN
Inventors: 雷操
Original assignee: Ensmai Technology Chengdu Co ltd
Current assignee: Ensmai Technology Chengdu Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-10
Anticipated expiration: 2031-06-24

Abstract

The utility model discloses a compact range antenna testing arrangement based on 3D many probes, including control assembly, determine module, rotating member, control assembly and determine module and rotating member are connected, determine module includes a plurality of probes and 3D curved surface, and the 3D curved surface is formed by arc post I and II vertical crossings of arc post and is the concave surface, and a plurality of probes set up on the 3D curved surface evenly, rotating member sets up with a plurality of probes relatively. The utility model discloses simple structure can form the 3D curved surface through two vertical crossings of arc post I and arc post II, and required probe quantity is less on the 3D curved surface, is favorable to reducing cost and trouble.

Description

Compact range antenna testing device based on 3D multi-probe

Technical Field

The utility model relates to an antenna test field, concretely relates to compact range antenna testing arrangement based on 3D many probes.

Background

The antenna is usually tested in far field, which often requires a long distance to test the characteristics of the antenna, so that the far field antenna test is often performed outdoors, the outdoor test is often affected by external interference and field reflection, and the far field test is often costly when performed indoors, so that the far field test of the antenna is often replaced by compact field technology. The compact field technology applies the near field focusing principle to generate a quasi-plane wave zone in the near zone of the measuring antenna. The system can measure far-field measurement data without far-field distance from the measured object or the antenna during measurement. In the existing compact range technology, the structure is complex and a plurality of rotating tables are needed to complete the characteristic test of the antenna from multiple angles.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compact range antenna testing arrangement based on 3D multitap, it is complicated to solve the structure, needs the problem that the multi-angle test of antenna could just be accomplished to a plurality of revolving stages.

In order to solve the technical problem, the utility model discloses a following scheme: the utility model provides a compact range antenna testing arrangement based on many probes of 3D, includes control assembly, determine module, rotating member, and control assembly and determine module and rotating member are connected, determine module includes a plurality of probes and 3D curved surface, and the 3D curved surface is formed and is the concave surface by arc post I and II vertical crossings of arc post, and a plurality of probes set up on the 3D curved surface evenly, rotating member sets up with a plurality of probes are relative. Through the probe of even setting on 3D curved surface and the 3D curved surface that arc post I and the perpendicular crossing of arc post II formed, can test the antenna under the condition that does not rotate 3D curved surface, and required probe quantity is less, is favorable to reducing cost and trouble.

Further, the number of the 3D curved surfaces is two and the two 3D curved surfaces are arranged oppositely, and the rotating component is arranged between the two 3D curved surfaces.

Furthermore, the detection assembly further comprises a beam forming network and a radio frequency switch network, and the plurality of probes are connected with the radio frequency switch network through the beam forming network.

Furthermore, the rotating component comprises a transverse rotating shaft and a vertical stepping motor output shaft, an umbrella-shaped gear I is fixed on the rotating shaft, an umbrella-shaped gear II is fixed on the stepping motor output shaft, and the umbrella-shaped gear I is in meshed connection with the umbrella-shaped gear II. The rotating member can realize transverse and radial rotation through only one stepping motor by the bevel gear.

Furthermore, a bearing is installed on the rotating shaft, and the outer ring of the bearing is fixed at the top end of the output shaft of the stepping motor.

Furthermore, the end of the rotating shaft is fixed with a shelf for placing an antenna. The object placing rack can fix the antenna, so that the antenna rotates along with the rotation of the object placing rack.

Further, the control component comprises a network analyzer and a computer, and the computer is connected with the radio frequency switch through the network analyzer.

Furthermore, the control assembly also comprises a controller, and the computer is connected with the radio frequency switch network and the stepping motor through the controller.

The utility model discloses beneficial effect who has:

1. compared with the conventional planar probe array, the 3D curved surface multi-probe structure is realized by using a simple structure and fewer probes, a planar field which is more favorable for testing is generated, and the cost and the faults can be reduced by fewer probes.

2. Only through a step motor drive antenna drive platform, make its antenna can be along with supporter horizontal and radial rotation, the structure is simple stable more.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a block diagram of a rotating member of one embodiment;

fig. 5 is a schematic diagram of a control assembly.

Reference numerals:

the system comprises a microwave anechoic chamber, a 2-detection assembly, a 20-3D curved surface, a 201-radio frequency switch network, a 202-probe, a 203-beam forming network, an arc-shaped column I-204, an arc-shaped column II-205, a 3-bracket, a 4-control assembly, a 401-computer, a 402-controller, a 403-network analyzer, a 5-rotating component, a 501-storage rack, a 502-antenna, a 503-umbrella-shaped gear II, a 504-stepping motor output shaft, 505-umbrella-shaped gear I, 506-bearing and a 507-rotating shaft.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is explained in detail below with reference to the figures and with reference to exemplary embodiments:

referring to fig. 1, 2, 3 and 4, a compact range antenna testing device based on 3D multiple probes comprises a control assembly 4, a detection assembly 2, and a rotating member 5, wherein the control assembly 4 is connected with the detection assembly 2 and the rotating member 5, the rotating member 5 can be used for placing an antenna 502 to be tested, the control assembly 4 can be used for controlling the detection assembly 2 and the rotating member 5 to test the antenna 502, the detection assembly 2 comprises a plurality of probes 202 and 3D curved surfaces 20, the 3D curved surfaces 20 are formed by perpendicularly intersecting an arc-shaped pillar i 204 and an arc-shaped pillar ii 205 and are curved surfaces, the plurality of probes 202 are uniformly arranged on the 3D curved surfaces 20, the number of the 3D curved surfaces 20 is two and are oppositely arranged, the rotating member 5 is arranged between the two 3D curved surfaces 20, the 3D curved surfaces 20 and the rotating member 5 are both arranged in a microwave anechoic chamber 2, a support frame 3 for supporting the 3D curved surfaces 20 is arranged at the bottom of the microwave anechoic chamber 2, the detection assembly 2 further comprises a beam forming network 203 and a radio frequency switch network 201, wherein the plurality of probes 202 are connected with the beam forming network 203, and the beam forming network 203 is connected with the radio frequency switch network 201. Through the 3D curved surface 20 that the arc post I204 and the arc post II 205 intersect perpendicularly and the even probe 202 that sets up on the 3D curved surface 20, can test antenna 502 under the condition that does not rotate the 3D curved surface, and required probe 202 is less in quantity, is favorable to reducing cost and trouble.

In the second embodiment, as shown in fig. 3 and 4, the rotating member 5 includes a horizontal rotating shaft 507 and a vertical stepping motor output shaft 504, an umbrella gear i 505 is fixed on the rotating shaft 507, an umbrella gear ii 503 is fixed on the stepping motor output shaft 504, and the umbrella gear i 507 and the umbrella gear ii 503 are in meshing connection. The rotating member 5 can realize the transverse and radial rotation only through a stepping motor through the bevel gear I507 and the bevel gear II 503, a bearing 506 is further installed on the rotating shaft 507, the bearing 506 is fixed at the top end of an output shaft 504 of the stepping motor, and a storage rack 501 for placing the antenna 502 is fixed at the end of the rotating shaft 507. The rack 501 is arranged horizontally as shown in fig. 4 or vertically as shown in fig. 3, and the antenna 502 can be fixed by the rack 501, so that the antenna 502 rotates along with the rotation of the rack 501.

In the third embodiment, as shown in fig. 5, the control component 4 includes a network analyzer 403 and a computer 401, the computer 401 is connected to the rf switch network 201 through the network analyzer 403, the control component 4 further includes a controller 402, the computer 401 is connected to the rf switch network 201 and the stepping motor through the controller 402, the computer 401 can control the rf signal of the rf switch network 201 through the controller 402, and the controller 402 can control the rotation angle of the output shaft 504 of the stepping motor in each rotation.

The working principle of the utility model is as follows:

when the device is used, the computer 401 can control the stepping motor to rotate through the controller 402, so that the rotating member 5 rotates transversely and radially, the antenna 502 arranged on the rotating member 5 also rotates transversely and radially, the beam forming network 203 and the radio frequency switch network 201 can superpose spherical waves to synthesize pseudo plane waves, as the plurality of probes 202 are connected with the radio frequency switch network 201 through the beam forming network 203, the rotating member 5 is arranged in a plane wave area formed by the plurality of probes 202 in a designated area, and the computer 401 realizes real-time control and detection on the plane waves generated by superposition through the controller 402 and the network analyzer 403, thereby realizing the detection on the characteristics of the antenna 502.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a compact range antenna testing arrangement based on many probes of 3D, includes control assembly (4), determine module (2), rotating member (5), and control assembly (4) are connected with determine module (2) and rotating member (5), its characterized in that, determine module (2) include a plurality of probes (202) and 3D curved surface (20), and 3D curved surface (20) are crossed perpendicularly by arc post I (204) and arc post II (205) and form and be the concave surface, and a plurality of probes (202) set up on 3D curved surface (20) uniformly, rotating member (5) set up with a plurality of probes (202) relatively.

2. The compact range antenna testing device based on the 3D multi-probe is characterized in that the number of the 3D curved surfaces (20) is two, the two 3D curved surfaces are arranged oppositely, and the rotating member (5) is arranged between the two 3D curved surfaces (20).

3. The compact antenna test device based on the 3D multi-probe is characterized in that the detection assembly (2) further comprises a beam forming network (203) and a radio frequency switch network (201), and the plurality of probes (202) are connected with the radio frequency switch network (201) through the beam forming network (203).

4. The compact range antenna testing device based on the 3D multi-probe is characterized in that the rotating member (5) comprises a transverse rotating shaft (507) and a vertical stepping motor output shaft (504), an umbrella gear I (505) is fixed on the rotating shaft (507), an umbrella gear II (503) is fixed on the stepping motor output shaft (504), and the umbrella gear I (505) and the umbrella gear II (503) are in meshed connection.

5. The compact range antenna testing device based on the 3D multi-probe is characterized in that a bearing (506) is installed on the rotating shaft (507), and the outer ring of the bearing (506) is fixed at the top end of the output shaft (504) of the stepping motor.

6. The compact range antenna testing device based on the 3D multi-probe is characterized in that a commodity shelf (501) for placing an antenna (502) is fixed at the end of the rotating shaft (507).

7. The compact range antenna testing device based on the 3D multi-probe is characterized in that the control component (4) comprises a network analyzer (403) and a computer (401), and the computer (401) is connected with the radio frequency switch network (201) through the network analyzer (403).

8. The compact range antenna testing device based on the 3D multi-probe is characterized in that the control assembly (4) further comprises a controller (402), and the computer (401) is connected with the radio frequency switch network (201) and the stepping motor through the controller (402).