CN214957346U

CN214957346U - Antenna device

Info

Publication number: CN214957346U
Application number: CN202121532665.9U
Authority: CN
Inventors: 罗云
Original assignee: Technology Communication Technology Co ltd
Current assignee: Technology Communication Technology Co ltd
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-11-30
Anticipated expiration: 2031-07-06

Abstract

The utility model provides an antenna device, including the mainboard and with mainboard feed main antenna structure, diversity antenna structure, first 5G antenna structure and second 5G antenna structure, main antenna structure is used for coupling 4G and 5G frequency channel, first 5G antenna structure and second 5G antenna structure are used for coupling 5G frequency channel, diversity antenna structure is the diversity antenna of main antenna structure, and main antenna structure and diversity antenna structure locate respectively the minor face both sides of mainboard, first 5G antenna structure and second 5G antenna structure locate respectively the long limit both sides of mainboard; first 5G antenna structure is relative second 5G antenna structure is close to main antenna structure, first 5G antenna structure adopts the combined mode of monopole antenna and parasitic ground, second 5G antenna structure adopts the slotted mode of PIFA.

Description

Antenna device

Technical Field

The utility model relates to an antenna field especially relates to an antenna device.

Background

An antenna device (e.g., law enforcement recorder) provided with a multi-antenna structure generally has a reduced volume in order to minimize the installation size, but because the number of 5G antennas is large, the distribution is dense, the mutual interference is large, and in order to avoid the mutual interference between the multi-antenna structures, an antenna device capable of reducing the mutual interference between the multi-antenna structures is required.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antenna device aims at solving the technical problem who mentions in the background art.

The utility model provides an antenna device, including the mainboard and with mainboard feed main antenna structure, diversity antenna structure, first 5G antenna structure and second 5G antenna structure, main antenna structure is used for coupling 4G and 5G frequency channel, first 5G antenna structure and second 5G antenna structure are used for coupling 5G frequency channel, diversity antenna structure is the diversity antenna of main antenna structure, and main antenna structure and diversity antenna structure locate respectively the minor face both sides of mainboard, first 5G antenna structure and second 5G antenna structure locate respectively the long limit both sides of mainboard;

first 5G antenna structure is relative second 5G antenna structure is close to main antenna structure, first 5G antenna structure adopts the combined mode of monopole antenna and parasitic ground, second 5G antenna structure adopts the slotted mode of PIFA.

Further, the main antenna structure comprises a main antenna PIFA ground and a main antenna parasitic ground, wherein a ground feed point and a feed point are arranged on the main antenna PIFA ground, and a radio frequency switch is arranged at the ground feed point.

Further, the main antenna PIFA ground includes a first radiating element, a second radiating element, a third radiating element and a fourth radiating element, the ground feeding point is disposed on the first radiating element, and the feeding point is disposed on the fourth radiating element.

Furthermore, one end of the third radiating element is connected with the first radiating element, and the other end of the third radiating element is parasitically close to the main antenna to couple 3300-5000MHz frequency band.

Furthermore, a slot is arranged between the first radiation unit and the third radiation unit.

Further, the fourth radiation unit is parallel to the main antenna parasitic ground, and the fourth radiation unit is close to the main antenna parasitic ground relative to the first radiation unit.

Furthermore, the first radiation unit is provided with a turning part, and the turning part is used for increasing the length of the first radiation unit.

Further, still include GPS antenna structure and/or WIFI antenna structure and/or BT antenna structure, just GPS antenna structure and/or WIFI antenna structure and/or BT antenna structure locate any side in the long limit both sides of mainboard.

Further, the GPS antenna structure and/or WIFI antenna structure and/or BT antenna structure is closer to the diversity antenna structure than the main antenna structure and the diversity antenna structure.

Furthermore, the diversity antenna structure adopts a monopole antenna mode.

The utility model discloses a locate main antenna structure and diversity antenna structure respectively in the minor face both sides of mainboard, locate the long limit both sides of mainboard respectively with first 5G antenna structure and second 5G antenna structure, second 5G antenna structure adopts the mode of PIFA fluting, is favorable to reducing the interference and the mutual interference of holding; on the other hand, the first 5G antenna structure adopts a combination mode of a monopole antenna and a parasitic ground, so that the isolation degree can be increased, and the high-frequency coupling effect can be generated with the main antenna structure, so that the low-frequency bandwidth can be increased.

Drawings

Fig. 1 is a schematic view of an overall structure of an antenna device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the first 5G antenna structure of the embodiment of fig. 1.

Fig. 3 is a schematic structural diagram of the main antenna structure of the embodiment of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that 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. 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. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both 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 terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-2, the present invention provides an antenna device 100, including a main board 10 and a main antenna structure 20, a diversity antenna structure 30, a first 5G antenna structure 40 and a second 5G antenna structure 50 fed by the main board 10, wherein the main antenna structure 20 is used for coupling 4G and 5G frequency bands, the first 5G antenna structure 40 and the second 5G antenna structure 50 are used for coupling 5G frequency bands, the diversity antenna structure 30 is a diversity antenna of the main antenna structure 20, the main antenna structure 20 and the diversity antenna structure 30 are respectively disposed on two sides of a short side of the main board 10, and the first 5G antenna structure 40 and the second 5G antenna structure 50 are respectively disposed on two sides of a long side of the main board 10.

The first 5G antenna structure 40 is close to the main antenna structure 20 relative to the second 5G antenna structure 50, the first 5G antenna structure 40 adopts a combined mode of a monopole antenna and a parasitic ground, and the second 5G antenna structure 50 adopts a mode of a PIFA slot.

The utility model discloses a locate main antenna structure 20 and diversity antenna structure 30 respectively in the minor face both sides of mainboard 10, locate first 5G antenna structure 40 and second 5G antenna structure 50 respectively in the major face both sides of mainboard 10, second 5G antenna structure 50 adopts the mode of PIFA fluting, is favorable to reducing the interference and the mutual interference of holding; on the other hand, the first 5G antenna structure 40 adopts a combination of a monopole antenna and a parasitic ground, which not only can increase the isolation, but also can generate a high-frequency coupling effect with the main antenna structure 20, which is beneficial to increasing the low-frequency bandwidth.

In an embodiment of the present invention, the diversity antenna structure 30 adopts a monopole antenna mode; by adopting the form of the monopole antenna, the size of the antenna can be effectively reduced, and the space of the whole machine is saved.

In an embodiment of the present invention, the antenna device 100 includes 4 second 5G antenna structures 50, three of the second 5G antenna structures are disposed on one long side of the main board 10, and the remaining one and the first 5G antenna decoupling strand are disposed on the other long side of the main board 10.

In an embodiment of the present invention, the antenna device 100 further includes an external antenna structure 60, the external antenna structure 60 may be a GPS antenna structure and/or a WIFI antenna structure and/or a BT antenna structure, and the external antenna structure 60 is disposed on any one of the two sides of the long edge of the motherboard 10.

Preferably, the external antenna structure 60 is closer to the diversity antenna structure 30 than to the main antenna structure 20 and the diversity antenna structure 30.

Referring to fig. 3, the main antenna structure 20 includes a main antenna PIFA ground 21 and a main antenna parasitic ground 22, the main antenna PIFA ground 21 is provided with a ground feed point 201 and a feed point 202, and the ground feed point 201 is provided with a radio frequency switch 203; in the embodiment, tuning of the radio frequency switch 203 is added, and matching of each switch is debugged, so that each frequency band achieves the optimal bandwidth and radiation efficiency.

Specifically, the main antenna PIFA ground 21 includes a first radiation element 211, a second radiation element 212, a third radiation element 213, and a fourth radiation element 214, the ground feed point 201 is disposed on the first radiation element 211, and the feed point 202 is disposed on the fourth radiation element 214.

Preferably, the first radiation unit 211 is provided with a turning part for increasing the length of the first radiation unit 211.

Preferably, one end of the third radiating element 213 is connected to the first radiating element 211, and the other end of the third radiating element 213 is close to the main antenna parasitic ground 22 to couple 3300-5000MHz frequency band.

Preferably, a slot is arranged between the first radiation unit 211 and the third radiation unit 213; in this embodiment, the grooves are used to eliminate stress to avoid warping in order to avoid the contact problem of the mounting case.

Preferably, the fourth radiation unit 214 is parallel to the main antenna parasitic ground 22, and the fourth radiation unit 214 is close to the main antenna parasitic ground 22 relative to the first radiation unit 211.

Specifically, in the embodiment, the distance between the fourth radiation unit 214 and the parasitic ground is 0.6mm, and the length of the coupling region is 12mm, and the coupling is mainly used for the middle-high frequency range of 1710-.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.

Claims

1. An antenna device is characterized by comprising a mainboard, a main antenna structure, a diversity antenna structure, a first 5G antenna structure and a second 5G antenna structure, wherein the main antenna structure, the diversity antenna structure, the first 5G antenna structure and the second 5G antenna structure are fed by the mainboard;

2. The antenna arrangement as claimed in claim 1, characterized in that the main antenna structure comprises a main antenna PIFA ground and a main antenna parasitic ground, the main antenna PIFA ground being provided with a ground feed point and a feed point, the ground feed point being provided with a radio frequency switch.

3. The antenna device as claimed in claim 2, wherein the main antenna PIFA ground comprises a first radiating element, a second radiating element, a third radiating element and a fourth radiating element, the ground feed point being provided on the first radiating element and the feed point being provided on the fourth radiating element.

4. The antenna device as claimed in claim 3, wherein one end of the third radiating element is connected to the first radiating element, and the other end of the third radiating element is parasitically coupled to the main antenna at 3300 and 5000MHz frequency bands.

5. The antenna device according to claim 4, wherein a slot is provided between the first radiating element and the third radiating element.

6. The antenna device according to claim 3, characterized in that said fourth radiating element is parallel to said main antenna parasitic ground and said fourth radiating element is close to said main antenna parasitic ground with respect to said first radiating element.

7. The antenna device according to claim 3, wherein the first radiating element is provided with a turn for increasing the length of the first radiating element.

8. The antenna device according to claim 1, further comprising a GPS antenna structure and/or a WIFI antenna structure and/or a BT antenna structure, wherein the GPS antenna structure and/or the WIFI antenna structure and/or the BT antenna structure are arranged on any one of two sides of the long side of the main board.

9. Antenna arrangement according to claim 8, characterized in that the GPS antenna structure and/or WIFI antenna structure and/or BT antenna structure is/are closer to the diversity antenna structure than to the main antenna structure and the diversity antenna structure.

10. The antenna arrangement as claimed in claim 1, wherein the diversity antenna arrangement is a monopole antenna.