CN211126071U - Antenna and transmission network device - Google Patents

Abstract

The utility model discloses an antenna and a transmission network device, comprising a medium plate, a ground layer, a shielding cover and a circuit layer. The medium plate includes a first surface and a second surface opposite to the first surface, and the ground layer is arranged on the first surface. The shielding cover is arranged on the second side and forms a shielding cavity, the shielding cover is electrically connected to the ground layer, the circuit layer is a microstrip line arranged on the second side, and is arranged in the shielding cavity, and the shielding cover is along the circuit Both sides of the layer are insulated. The transmission network device can shield external electromagnetic interference, which is beneficial to improve the reliability of signal transmission. The antenna adopts the above-mentioned transmission network device and can have more reliable performance.

Description

Antennas and Transmission Network Devices

technical field

The utility model relates to the technical field of communication, in particular to an antenna and a transmission network device.

Background technique

With the rapid development of mobile communication networks, the communication system is undergoing rapid evolution towards 5G, and 5G antennas have become an important research direction at present, but they also face many problems. The application of massive array MIMO antennas makes the internal space distribution compact, and the miniaturization of antenna components becomes a characteristic requirement. At the same time, the antenna components are more easily affected by the external environment, and the mutual influence between the components will also increase.

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

Utility model content

Based on this, it is necessary to provide an antenna and a transmission network device, the transmission network device can shield external electromagnetic interference, which is beneficial to improve the reliability of signal transmission. The antenna adopts the above-mentioned transmission network device and can have more reliable performance.

Its technical solutions are as follows:

In one aspect, the present application provides a transmission network device, including a dielectric board, a ground layer, a shield and a circuit layer, the dielectric board includes a first surface and a second surface opposite to the first surface, and the ground layer is disposed on the first surface , the shielding cover is arranged on the second side and forms a shielding cavity, the shielding cover is electrically connected to the ground layer, the circuit layer is a microstrip line arranged on the second side, and is arranged in the shielding cavity, and the shielding cover is along the circuit layer. set on both sides.

When the above-mentioned transmission network device is used, since the circuit layer is in the shape of a microstrip line, the shielding cover is arranged along both sides of the circuit layer, which can reduce the volume of the shielding structure, reduce the weight of the transmission network device, and adapt to the development of antenna miniaturization. At the same time, the shielding cover cooperates with the grounding layer to form a shielding cavity, which can better shield external electromagnetic interference and is beneficial to improve the reliability of signal transmission.

The technical solution is further described below:

In one embodiment, the second surface is provided with a first conductor and a second conductor spaced on both sides of the circuit layer, the two sides of the shield are welded with the first conductor and the second conductor respectively, and the A conductor or/and a second conductor are electrically connected to the ground layer.

In one embodiment, the first conductor or/and the second conductor are electrically connected to the ground layer through metal vias.

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

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

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

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 of the embodiments, the height of the shielding cavity is less than or equal to 1.8 mm.

In one of the embodiments, the shielding cover includes two side plates arranged opposite to each other, and a top plate movably arranged on the two side plates. On the other hand, the present application also provides an antenna, including the transmission network device in any of the foregoing embodiments.

The antenna adopts the above-mentioned transmission network device and can have more reliable performance.

Description of drawings

FIG. 1 is a schematic diagram of a transmission network device shown in an embodiment;

FIG. 2 is a schematic exploded view of the structure of the transmission network device shown in FIG. 1;

3 is a schematic diagram of the connection between the first cover body and the second cover body shown in an embodiment;

FIG. 4 is a schematic diagram of a transmission network device according to an embodiment.

Description of reference numbers:

100, dielectric board; 110, second surface; 200, grounding layer; 300, shielding cover; 310, shielding cavity; 320, notch; 330, first cover body; 340, second cover body; 400, circuit layer; 410 , functional circuit unit; 420, connecting wire; 500, first conductor; 600, second conductor.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

It should be noted that when an element is referred to as being "fixed on", "disposed on", "fixed on" or "mounted on" another element, it can be directly on the other element or an intervening element 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 can be fixed by detachable connection, or can be fixed by non-detachable connection, such as socket connection, snap connection, integral molding fixing, welding, etc., It can be implemented in the prior art, and is not redundant here. When a component and another component are perpendicular or approximately perpendicular to each other, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

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

The "first" and "second" involved in the present utility model do not represent a specific quantity and order, but are only used for the distinction of names.

As shown in FIG. 1 and FIG. 2 , in one embodiment, a transmission network device is provided, including a dielectric board 100 , a ground layer 200 , a shield 300 and a circuit layer 400 , and the dielectric board 100 includes a first surface (not marked), and the second surface 110 opposite to the first surface, the grounding layer 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 grounding layer 200, and the circuit layer 400 is a microstrip line disposed on the second surface 110 and disposed in the shielding cavity 310 , and the shielding cover 300 is disposed along both sides of the circuit layer 400 .

When the above-mentioned transmission network device is used, since the circuit layer adopts the microstrip line, the shielding cover 300 cooperates with the ground layer 200 to form a shielding cavity 310, and the electromagnetic environment where the circuit layer is located is between the microstrip line and the strip line, both It ensures the good matching characteristics of the microstrip transmission network, and also has the good electromagnetic shielding effect of the stripline transmission network, which is beneficial to improve the reliability of signal transmission. The volume of the shielding structure can be reduced, the weight of the transmission network device can be reduced, and the miniaturization development of the antenna can be adapted.

In addition, it can be understood that the circuit layer 400 only needs to be arranged in the shielding cavity 310, and is arranged at a distance from the shielding cover 300, so that the size adjustment of the shielding cover 300 is more flexible. According to the characteristics of the circuit layer 400, by adjusting the appropriate size and height of the shielding cavity 310, the resonant frequency and the value of the quality factor in the shielding cover can be changed, so as to avoid the resonance self-excitation in the cavity, thereby preventing the internal transmission of the microstrip line. The problem of signal crosstalk.

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

On the basis of the above-mentioned embodiment, as shown in FIG. 2 , in one embodiment, the second surface 110 is provided with a first conductor 500 and a second conductor 600 arranged at intervals on both sides of the circuit layer 400 . The two sides are respectively welded with 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 electrical conductor 500, and the second electrical conductor 600 can be formed and manufactured by the printing board technology, which is beneficial to save assembly time. At the same time, the two sides of the shielding cover 300 are respectively welded with the first conductor 500 and the second conductor 600, so that repeated disassembly and assembly are not required during use, which is easy to mass-produce, and no fasteners such as metal screws are required, which is helpful for reducing the size of the antenna. Total Weight.

Further, in an embodiment, the first conductor 500 or/and the second conductor 600 are electrically connected to the ground layer 200 through metal vias (not marked). In this way, the first electrical conductor 500 , the second electrical conductor 600 or the first electrical conductor 500 and the second electrical conductor 600 are reliably electrically connected to the ground layer 200 by using the metal via.

On the basis of any of the above embodiments, as shown in FIG. 1 , in one embodiment, the circuit layer 400 may include at least two functional circuit units 410 , and the shielding cover 300 may include at least two first cover bodies 330 , each of which is a first cover body 330 . A cover body 330 is disposed in a one-to-one correspondence with each functional circuit unit 410 . In this way, the self-resonant self-excitation of the internal network of the circuit layer can be well avoided while achieving a better shielding effect, and the circuit layer 400 can be shielded by a more flexible combination.

It should be noted that, the connection between the first cover body 330 and the adjacent first cover body 330 may adopt structures such as nested type, snap-fit type, etc., which is beneficial to prevent leakage of electromagnetic radiation.

It should be noted that the specific structures of the shielding cavity 310 and the shielding cover 300 can be designed according to the shape of the circuit layer 400 .

Further, as a preferred embodiment, at least one end of the first cover body 330 is provided with a gap 320 , and two adjacent first cover bodies 330 can be nested and butted through the gap 320 . Specifically, for two functional circuit units that need to be connected to each other, a notch 320 may be provided at the end of the corresponding first cover body 330, so that the gap between the two adjacent first cover bodies 330 The connection adopts a nested structure, which can effectively prevent leakage of electromagnetic radiation at the gap between each adjacent two shielding cavities. At the same time, it also has the advantages of convenient installation and low cost. Moreover, 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 one embodiment, the circuit layer 400 further includes a connecting wire 420 , and at least two functional circuit units 410 are connected through the connecting wire 420 , and the shielding cover 300 further includes a second connecting wire 420 . The cover body 340 and the second cover body 340 are covered on the connecting wire 420 , and two ends of the second cover body 340 are respectively sleeved with the adjacent first cover bodies 330 . In this way, it is beneficial to further improve the shielding effect, the forehead of the weapon and the overall shielding cavity are more compact, and it is beneficial to further reduce the volume of the shielding structure. In addition, the connecting wire 420 is covered by the second cover body 340, so that the shielding structure is more compact, and the first cover body 330 and the second cover body 340 can be freely combined into different shielding cavities to accommodate different shapes of the circuit layer 400.

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, and the corresponding first cover 330 may also be located at the corresponding branch ports. The above-mentioned notches 320 are provided, and the two ends of the second cover body 340 may also be provided with notches. As shown in FIG. 3 , the second cover body 340 is nested in the notches 320 of the first cover body 330 , thereby effectively preventing electromagnetic radiation. Give way.

Further, in one embodiment, the nesting length of the first cover body 330 and the second cover body 340 is adjustable, so that the resonant frequency and the value of the quality factor in the shielding cover can be adjusted to avoid self-excitation of resonance in the cavity, thereby preventing The problem of signal crosstalk within the microstrip transmission network.

On the basis of any of the above-mentioned embodiments, in one embodiment, the shielding cover 300 includes two side plates (not marked) disposed opposite to each other, and a top plate (not marked) movably disposed on the two side plates. In this way, the height of the shielding cavity 310 of the shielding cover can be adjusted reasonably, which is beneficial to change the resonant frequency, so that the resonant frequency is not within the working frequency band of the calibration network, so as to achieve the purpose of preventing external electromagnetic interference and coupling the self-excited resonance of the calibration network circuit. resonance effect.

Based on any of the above embodiments, in one embodiment, the height of the shielding cavity 310 is less than or equal to 1.8 mm. It can not only achieve a good shielding effect, but also improve the impedance matching performance of the circuit layer, and can reduce the height, which is conducive to realizing the miniaturization of the whole antenna.

In another embodiment, an antenna is provided, including the transmission network device in any of the foregoing embodiments. By using the above-mentioned transmission network device, the antenna can have more reliable performance, can reduce the weight and volume of the whole antenna, and is conducive to the development of miniaturization of the antenna.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above examples only represent several embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (10)

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.

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