CN211126071U

CN211126071U - Antenna and transmission network device

Info

Publication number: CN211126071U
Application number: CN201922266911.XU
Authority: CN
Inventors: 林彤; 李明超; 陈宏亮; 薛锋章
Original assignee: South China University of Technology SCUT; Comba Telecom Technology Guangzhou Ltd
Current assignee: South China University of Technology SCUT; Comba Telecom Technology Guangzhou Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-07-28
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses an antenna and transmission network device, including dielectric-slab, ground plane, shield cover and circuit layer, the dielectric-slab includes first face and the second face relative with first face, and the ground plane sets up in first face, and the shield cover is located the second face and is formed the shielding chamber, and the shield cover is connected with the ground plane electricity, and the circuit layer is for setting up the microstrip line on the second face to set up in the shielding intracavity, and the shield cover is insulating along the both sides on circuit layer. The transmission network device can shield external electromagnetic interference and is beneficial to improving the reliability of signal transmission. The antenna adopting the transmission network device can have more reliable performance.

Description

Antenna and transmission network device

Technical Field

The utility model relates to the field of communication technology, especially, relate to an antenna and transmission network device.

Background

With the rapid development of mobile communication networks, communication systems are facing to 5G fast-step evolution, and 5G antennas are currently an important research direction, but currently, many problems are faced. The application of the large-scale array MIMO antenna makes the internal space distribution compact, and the miniaturization of the antenna component becomes a characteristic requirement. Meanwhile, the antenna components are more susceptible to the external environment, and the mutual influence among the components is increased.

The traditional transmission network is simple in design, is easily interfered by an external electromagnetic field, and is serious in electromagnetic energy leakage.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for an antenna and a transmission network device, which can shield external electromagnetic interference and is beneficial to improving the reliability of signal transmission. The antenna adopting the transmission network device can have more reliable performance.

The technical scheme is as follows:

on the one hand, the application provides a transmission network device, including dielectric-slab, ground plane, shield cover and circuit layer, the dielectric-slab includes first face and the second face relative with first face, and the ground plane sets up in first face, and the shield cover is located the second face and is formed the shielding chamber, and the shield cover is connected with the ground plane electricity, and the circuit layer is for setting up the microstrip line on the second face to set up in the shielding chamber, and the shield cover sets up along the both sides on circuit layer.

When the transmission network device is used, the circuit layer is in a microstrip line shape, so that the shielding cover is arranged along two sides of the circuit layer, the size of the shielding structure can be reduced, the weight of the transmission network device is reduced, and the miniaturization development of the antenna can be adapted. Meanwhile, the shielding cover is matched with the grounding layer to form a shielding cavity, so that external electromagnetic interference can be better shielded, and the reliability of signal transmission can be improved.

The technical solution is further explained below:

in one embodiment, the second surface is provided with a first conductor and a second conductor which are arranged at two sides of the circuit layer at intervals, two sides of the shielding cover are respectively welded with the first conductor and the second conductor, and the first conductor or/and the second conductor are electrically connected with the grounding layer.

In one embodiment, the first conductor or/and the second conductor is electrically connected to the ground layer through a metal via.

In one embodiment, the circuit layer includes at least two functional circuit units, and the shielding case includes at least two first cover bodies, and each first cover body is disposed in one-to-one correspondence with each functional circuit unit.

In one embodiment, at least one end of each first cover body is provided with a notch, and two adjacent first cover bodies can be nested and butted through the notches.

In one embodiment, the circuit layer further includes a connecting line, the at least two functional circuit units are connected through the connecting line, the shielding case further includes a second cover body, the second cover body covers the connecting line, and two end portions of the second cover body are respectively sleeved with the adjacent first cover bodies.

In one embodiment, the functional circuit unit is any one or a combination of two or more of a power divider, a coupler, a combiner, a phase shifter, a filter circuit and a calibration network circuit.

In one embodiment, the height of the shielding cavity is less than or equal to 1.8 mm.

In one embodiment, the shielding case comprises two side plates which are oppositely arranged, and a top plate which is movably arranged on the two side plates. On the other hand, the present application also provides an antenna comprising the transmission network apparatus in any of the above embodiments.

The antenna adopting the transmission network device can have more reliable performance.

Drawings

FIG. 1 is a schematic diagram of a transport network apparatus according to one embodiment;

fig. 2 is an exploded view of the structure of the transport network apparatus shown in fig. 1;

FIG. 3 is a schematic diagram illustrating the connection between the first housing and the second housing according to an embodiment;

fig. 4 is a schematic diagram of a transport network apparatus according to an embodiment.

Description of reference numerals:

100. a dielectric plate; 110. a second face; 200. a ground plane; 300. a shield case; 310. a shielding cavity; 320. A notch; 330. a first cover body; 340. a second cover body; 400. a circuit layer; 410. a functional circuit unit; 420. a connecting wire; 500. a first electrical conductor; 600. a second electrical conductor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered to be "fixedly connected" to another element, the two elements may be fixed by way of detachable connection, or may be fixed by way of non-detachable connection, such as socket connection, snap connection, integrally formed fixation, welding, etc., which can be realized in the prior art, and thus are not cumbersome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.

As shown in fig. 1 and fig. 2, in an embodiment, a transmission network device is provided, which includes a dielectric board 100, a ground plane 200, a shielding cover 300 and a circuit layer 400, where the dielectric board 100 includes a first surface (not labeled) and a second surface 110 opposite to the first surface, the ground plane 200 is disposed on the first surface, the shielding cover 300 is disposed on the second surface 110 and forms a shielding cavity 310, the shielding cover 300 is electrically connected to the ground plane 200, the circuit layer 400 is a microstrip line disposed on the second surface 110 and is disposed in the shielding cavity 310, and the shielding cover 300 is disposed along two sides of the circuit layer 400.

When the transmission network device is used, the circuit layer adopts the microstrip line, the shielding case 300 is matched with the ground layer 200 to form the shielding cavity 310, the electromagnetic environment where the circuit layer is located is between the microstrip line and the strip line, which not only ensures the good matching characteristic of the microstrip line transmission network, but also has the good electromagnetic shielding effect of the strip line transmission network, thereby being beneficial to improving the reliability of signal transmission, meanwhile, the shielding case 300 can also reduce the volume of the shielding structure along the two sides of the circuit layer 400, the weight of the transmission network device is reduced, and the miniaturization development of the antenna can be adapted.

In addition, it is understood that the circuit layer 400 may be disposed in the shielding cavity 310, and is spaced from the shielding can 300, so that the size of the shielding can 300 can be adjusted more flexibly. The values of the resonant frequency and the quality factor in the shielding cover can be changed by adjusting the proper size and height of the shielding cavity 310 according to the characteristics of the circuit layer 400, so that the resonance self-excitation in the cavity is avoided, and the problem of signal crosstalk in the microstrip line transmission network is prevented.

The shielding case 300 is a metal case or a plastic case, and the inner wall or/and the outer wall is formed with a metal layer.

In addition to the above embodiments, as shown in fig. 2, in one embodiment, the first conductor 500 and the second conductor 600 are disposed on the second surface 110 at intervals on both sides of the circuit layer 400, both sides of the shield cover 300 are respectively welded to the first conductor 500 and the second conductor 600, and the first conductor 500 or/and the second conductor 600 are electrically connected to the ground layer 200. In this way, the dielectric board 100, the ground layer 200, the circuit layer 400, the first conductor 500, and the second conductor 600 can be molded by the printed circuit board technique, which is advantageous for saving the assembly time. Meanwhile, the two sides of the shielding case 300 are respectively welded with the first conductor 500 and the second conductor 600, so that repeated disassembly and assembly are not needed in the using process, the mass production is easy, fasteners such as metal screws are not needed, and the weight of the whole antenna is reduced.

Further, in one embodiment, the first conductor 500 or/and the second conductor 600 are electrically connected to the ground plane 200 through a metal via (not labeled). In this way, the first conductor 500, the second conductor 600, or the first conductor 500 and the second conductor 600 are reliably electrically connected to the ground layer 200 by the metal via.

Based on any of the above embodiments, as shown in fig. 1, in an embodiment, the circuit layer 400 may include at least two functional circuit units 410, and the shielding case 300 includes at least two first cases 330, where each first case 330 and each functional circuit unit 410 are disposed in a one-to-one correspondence. Therefore, the circuit layer 400 can be well shielded while better shielding effect is achieved, resonance self-excitation of the internal network of the circuit layer is well avoided, and the circuit layer 400 can be more flexibly combined to be shielded.

It should be noted that the connection between the first cover 330 and the adjacent first cover 330 may adopt a nested structure, a snap-fit structure, and the like, which is beneficial to preventing electromagnetic radiation from leaking.

The specific structure of the shielding cavity 310 and the shielding can 300 may be designed according to the shape of the circuit layer 400.

Further, as a preferred embodiment, at least one end of the first cover 330 is provided with a notch 320, and two adjacent first covers 330 can be nested and butted through the notch 320. Specifically, for two functional circuit units that need to be connected to each other, the notch 320 may be disposed at the end of the corresponding first cover 330, so that the connection between the two adjacent first covers 330 adopts a nested structure, and the electromagnetic radiation leakage at the gap where each two adjacent shielding cavities are connected may be effectively prevented. Meanwhile, the device also has the advantages of convenience in installation, low cost and the like. And the combination between the shielding covers is more flexible, and the combination design can be carried out according to the shape of the circuit layer.

Further, as shown in fig. 2 and fig. 4, in an embodiment, the circuit layer 400 further includes a connection line 420, the at least two functional circuit units 410 are connected by the connection line 420, the shielding cover 300 further includes a second cover 340, the second cover 340 covers the connection line 420, and two end portions of the second cover 340 are respectively sleeved with the adjacent first cover 330. So, be favorable to further promoting shielding effect, the weapon volume, whole shielding chamber is compacter, is favorable to further reducing shielding structure's volume. In addition, the connecting line 420 is covered by the second cover 340, so that the shielding structure is more compact, and the first cover 330 and the second cover 340 are freely combined into different shielding cavities to accommodate the covering of the circuit layers 400 in different shapes.

The functional circuit unit 410 includes any one or a combination of two or more of a power divider, a coupler, a combiner, a phase shifter, a filter circuit, and a calibration network circuit. Specifically, in this embodiment, taking the circuit layer 400 including the power divider, the coupler, and the calibration circuit as an example, the power divider has a plurality of branch ports, the corresponding first cover 330 may also have the above-mentioned notch 320 at each corresponding branch port, and both ends of the second cover 340 may also have notches, as shown in fig. 3, the second cover 340 is nested in the notch 320 of the first cover 330, so as to effectively prevent the electromagnetic radiation from leaking.

Further, in an embodiment, the nesting length of the first cover 330 and the second cover 340 is adjustable, so that the values of the resonant frequency and the quality factor in the shielding cover can be adjusted, and resonance self-excitation in the cavity is avoided, thereby preventing the problem of signal crosstalk in the microstrip line transmission network.

In addition to any of the above embodiments, in an embodiment, the shielding case 300 includes two side plates (not labeled) disposed oppositely, and a top plate (not labeled) movably disposed on the two side plates. Therefore, the height of the shielding cavity 310 of the shielding cover can be reasonably adjusted, the change of the resonant frequency is facilitated, the resonant frequency is not within the working frequency band of the calibration network, the purposes of preventing external electromagnetic interference and self-excitation resonance of the coupling calibration network circuit are achieved, and the de-resonance effect is achieved.

In an embodiment, the height of the shielding cavity 310 is less than or equal to 1.8 mm. Not only can achieve good shielding effect, but also can improve the impedance matching performance of the circuit layer, can reduce the height, and is beneficial to realizing the miniaturization of the whole antenna.

In another embodiment, an antenna is provided, comprising the transmission network apparatus in any of the above embodiments. The antenna adopting the transmission network device can have more reliable performance, can reduce the weight and the volume of the whole antenna, and is beneficial to the miniaturization development of the antenna.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A transport network apparatus, comprising:

the dielectric plate comprises a first surface and a second surface opposite to the first surface;

the grounding layer is arranged on the first surface;

the shielding cover is arranged on the second surface and forms a shielding cavity, and the shielding cover is electrically connected with the grounding layer; and

the circuit layer is a microstrip line arranged on the second surface and arranged in the shielding cavity, and the shielding cover is arranged along two sides of the circuit layer.

2. The transmission network device according to claim 1, wherein the second surface is provided with a first conductor and a second conductor which are disposed at both sides of the circuit layer at an interval, both sides of the shield are respectively soldered to the first conductor and the second conductor, and the first conductor or/and the second conductor are electrically connected to the ground layer.

3. The transport network apparatus of claim 2, wherein the first or/and second electrical conductors are electrically connected to the ground plane by metal vias.

4. The transmission network device according to claim 1, wherein the circuit layer includes at least two functional circuit units, and the shielding case includes at least two first cover bodies, and each of the first cover bodies is provided in one-to-one correspondence with each of the functional circuit units.

5. The transmission network device according to claim 4, wherein at least one end of the first cover is provided with a notch, and two adjacent shielding covers can be nested and butted through the notch.

6. The transmission network device according to claim 4, wherein the circuit layer further includes a connection line, at least two of the functional circuit units are connected via the connection line, the shielding cover further includes a second cover body, the second cover body is covered on the connection line, and two end portions of the second cover body are respectively sleeved with the adjacent first cover bodies.

7. The transmission network apparatus according to claim 4, wherein the functional circuit unit is any one of or a combination of two or more of a power divider, a coupler, a combiner, a phase shifter, a filter circuit, and a calibration network circuit.

8. The transport network device of claim 1, wherein the height of the shielded cavity is less than or equal to 1.8 mm.

9. Transport network device according to any of claims 1 to 8, characterized in that the shielding cage comprises two side plates arranged opposite each other and a top plate movably arranged on both side plates.

10. An antenna comprising a transmission network device according to any one of claims 1 to 9.