CN212848806U

CN212848806U - Multi-antenna Bluetooth device

Info

Publication number: CN212848806U
Application number: CN202021848457.5U
Authority: CN
Inventors: 罗云
Original assignee: Shenzhen Xinghang Wulian Science And Technology Co ltd
Current assignee: Shenzhen Xinghang Wulian Science And Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-03-30
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a multi-antenna Bluetooth device, including antenna device, antenna device includes first PIFA antenna body, second PIFA antenna body and keeps apart the ground wire, first PIFA antenna body includes interconnect's first radiating element and first radiation reference ground, and the first radiating element is perpendicular to the first radiation reference ground; the second PIFA antenna body comprises a second radiation element and a second radiation reference ground which are connected with each other, and the second radiation element is perpendicular to the second radiation reference ground; the first radiation reference ground and the second radiation reference ground are connected through the isolation ground wire, the first radiation reference ground and the second radiation reference ground are perpendicular to each other, and the first radiation unit and the second radiation unit are perpendicular to each other.

Description

Multi-antenna Bluetooth device

Technical Field

The utility model relates to a wireless communication technology field especially relates to a many antennas bluetooth equipment.

Background

The Bluetooth antenna is widely applied, and the current medical equipment mostly adopts Bluetooth for data transmission, so that the Bluetooth antenna is used on various medical instruments.

The existing communication function terminal equipment adopts a multi-antenna scheme, and because the reserved antenna area of the equipment is very small, the multi-antenna simultaneous design is inevitably adopted in a small space, so that the isolation degree is poor, the performance of the antenna is influenced, the research and development difficulty of the antenna is increased, and the multi-antenna Bluetooth equipment with better antenna isolation degree is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a many antennas bluetooth device, antenna isolation is better, and each antenna space radiation distributes evenly.

Further, the total length of the isolation ground wire is 2 lambda.

Further, the isolated ground wire comprises a first arm and a second arm, and the first arm and the second arm are perpendicular to each other.

Further, the isolation ground line and the second radiation reference are located on the same plane.

Furthermore, the antenna device includes a first dielectric plate, a second dielectric plate, a third dielectric plate and a fourth dielectric plate, the first radiation unit is disposed on the first dielectric plate, the second radiation unit is disposed on the second dielectric plate, the first radiation reference is disposed on the third dielectric plate, the isolation ground wire and the second radiation reference are disposed on the fourth dielectric plate, and the first dielectric plate, the second dielectric plate and the third dielectric plate are all disposed on the same side of the fourth dielectric plate; the second dielectric plate and the third dielectric plate are positioned on the same plane, the second dielectric plate and the fourth dielectric plate are connected and mutually vertical, and the first dielectric plate and the third dielectric plate are connected and mutually vertical.

Further, at least two antenna devices are included, and two first radiation units in any two adjacent antenna devices are distributed at intervals.

Further, the first radiation unit and the radiation unit have the same structure and size.

Further, the first radiation reference ground and the radiation reference ground are the same in structure and size.

The utility model discloses a set up first PIFA antenna body and second PIFA antenna body, and first radiation is consulted ground and first radiating element mutually perpendicular, and the second radiation is consulted ground and second radiating element mutually perpendicular to optimize the radiation directionality of antenna body.

The utility model discloses still through setting up first radiation and radiating mutually perpendicular with the second radiation reference ground, first radiating element and second radiating element mutually perpendicular to make each antenna space radiation distribute evenly.

The utility model discloses the isolation ground wire that first radiation reference ground and second radiation reference ground have still been set up and have been connected to optimize the antenna isolation.

Drawings

Fig. 1 is a schematic structural diagram of an angle of a multi-antenna bluetooth device according to an embodiment of the present invention.

Fig. 2 is a schematic view of the embodiment of fig. 1 from another angle.

Fig. 3 is a schematic structural diagram of an angle of a multi-antenna bluetooth device according to another embodiment of the present invention.

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. 1-3, fig. 1 is a schematic structural diagram of an angle of a multi-antenna bluetooth device according to an embodiment of the present invention. Fig. 2 is a schematic view of the embodiment of fig. 1 from another angle. Fig. 3 is a schematic structural diagram of an angle of a multi-antenna bluetooth device according to another embodiment of the present invention. Among them, the multi-antenna bluetooth device shown in fig. 1 and 2 includes two antenna apparatuses, and the antenna bluetooth device shown in fig. 3 includes three antenna apparatuses.

The utility model provides a many antennas bluetooth device 100, including at least two antenna devices, the antenna device includes first PIFA antenna body, second PIFA antenna body and isolation ground wire 30, first PIFA antenna body includes interconnect's first radiating element 11 and first radiation reference ground 12, second PIFA antenna body includes interconnect's second radiating element 21 and second radiation reference ground 22; the first radiating element 11 is provided with a first feeding point 111 and a first grounding point 112, the first feeding point 111 is connected to a matching adjusting circuit (not specifically shown in the figure), the first grounding point 112 is connected to a first radiating reference ground 12, the second radiating element 21 is provided with a second feeding point 211 and a second grounding point 212, the second feeding point 211 is connected to the matching adjusting circuit, and the second grounding point 212 is connected to the first radiating reference ground 12.

Specifically, the first radiation unit 11 is perpendicular to the first radiation reference ground 12; and the second radiation unit 21 is perpendicular to the second radiation reference ground 22; the first radiation reference ground 12 and the second radiation reference ground 22 are connected through the isolation ground line 30, the first radiation reference ground 12 and the second radiation reference ground 22 are perpendicular to each other, and the first radiation unit 11 and the second radiation unit 21 are perpendicular to each other.

The utility model discloses a set up first PIFA antenna body and second PIFA antenna body, and first radiation reference ground 12 and first radiating element 11 are mutually perpendicular, and second radiation reference ground 22 and second radiating element 21 are mutually perpendicular to optimize the radiation directivity of antenna body; the first radiation element 11 and the second radiation element 21 are also perpendicular to each other by arranging the first radiation reference ground 12 and the second radiation reference ground 22 to be perpendicular to each other, so that the spatial radiation distribution of each antenna is uniform.

In some embodiments, the total length of the isolated ground line 30 is 2 λ.

In some embodiments, the isolated ground line 30 includes a first arm 31 and a second arm 32, and the first arm 31 and the second arm 32 are perpendicular to each other, so that the total length of the isolated ground line 30 is relatively long, thereby optimizing the isolation between the antenna bodies.

Specifically, the antenna device includes a first dielectric plate 101, a second dielectric plate 102, a third dielectric plate 103, and a fourth dielectric plate 104, the first radiation unit 11 is disposed on the first dielectric plate 101, the second radiation unit 21 is disposed on the second dielectric plate 102, the first radiation reference ground 12 is disposed on the third dielectric plate 103, the isolation ground 30 and the second radiation reference ground 22 are disposed on the fourth dielectric plate 104, and the first dielectric plate 101, the second dielectric plate 102, and the third dielectric plate 103 are all disposed on the same side of the fourth dielectric plate 104; the second dielectric plate 102 and the third dielectric plate 103 are located on the same plane, the second dielectric plate 102 is connected with the fourth dielectric plate 104 and is perpendicular to the fourth dielectric plate, and the first dielectric plate 101 is connected with the third dielectric plate 103 and is perpendicular to the third dielectric plate 103, so that the structure of the antenna device is reduced by optimizing the spatial distribution of the dielectric plates.

In some embodiments, the isolated ground trace 30 is located on the same plane as the second radiation reference ground 22 to facilitate assembly.

In some embodiments, two first radiation elements 11 in any two adjacent antenna devices are distributed at intervals.

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. A multi-antenna bluetooth device comprising an antenna arrangement including a first PIFA antenna body, a second PIFA antenna body and an isolation ground, the first PIFA antenna body including a first radiating element and a first radiation reference ground connected to each other, and the first radiating element being perpendicular to the first radiation reference ground; the second PIFA antenna body comprises a second radiation element and a second radiation reference ground which are connected with each other, and the second radiation element is perpendicular to the second radiation reference ground; the first radiation reference ground and the second radiation reference ground are connected through the isolation ground wire, the first radiation reference ground and the second radiation reference ground are perpendicular to each other, and the first radiation unit and the second radiation unit are perpendicular to each other.

2. The multiple-antenna bluetooth device according to claim 1, wherein the total length of the isolation ground is 2 λ.

3. The multiple-antenna bluetooth device according to claim 1, wherein the isolated ground comprises a first arm and a second arm, the first arm and the second arm being perpendicular to each other.

4. The multi-antenna bluetooth device according to claim 1, wherein the isolated ground is located on the same plane as the second radiation reference.

5. The multi-antenna Bluetooth device of claim 4, wherein the antenna apparatus includes a first dielectric plate, a second dielectric plate, a third dielectric plate, and a fourth dielectric plate, the first radiating element is disposed on the first dielectric plate, the second radiating element is disposed on the second dielectric plate, the first radiation reference is disposed on the third dielectric plate, the isolation ground and the second radiation reference are disposed on the fourth dielectric plate, and the first dielectric plate, the second dielectric plate, and the third dielectric plate are disposed on the same side of the fourth dielectric plate; the second dielectric plate and the third dielectric plate are positioned on the same plane, the second dielectric plate and the fourth dielectric plate are connected and mutually vertical, and the first dielectric plate and the third dielectric plate are connected and mutually vertical.

6. The multi-antenna bluetooth device according to claim 1, wherein at least two antenna devices are included, and two first radiating elements of any two adjacent antenna devices are spaced apart.

7. The multi-antenna bluetooth device according to claim 1, wherein the first radiating element and the radiating element have the same structure and size.

8. The multi-antenna bluetooth device according to claim 1, wherein the first radiation reference ground and the radiation reference ground have the same structure and size.