CN216413268U

CN216413268U - MIMO antenna

Info

Publication number: CN216413268U
Application number: CN202123447746.1U
Authority: CN
Inventors: 田文伟
Original assignee: Jiangsu Jiahua Communication Technology Co ltd
Current assignee: Jiangsu Jiahua Communication Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-04-29
Anticipated expiration: 2031-12-30

Abstract

The utility model provides an MIMO antenna, which comprises a substrate, half-wave oscillator arms arranged on the substrate and a ground feeder coupled with the half-wave oscillator arms, wherein the half-wave oscillator arms comprise a first half-wave oscillator arm, a second half-wave oscillator arm, a third half-wave oscillator arm and a fourth half-wave oscillator arm, the first half-wave oscillator arm and the second half-wave oscillator arm are arranged on the upper side of the substrate, the third half-wave oscillator arm and the fourth half-wave oscillator arm are arranged on the left side of the substrate, and the half-wave oscillator arms are respectively provided with feed points connected with the ground feeder. By the arrangement, the MIMO antenna provided by the utility model is provided with the half-wave oscillator arms and the ground feeding surface which can be coupled with all the half-wave oscillator arms, so that the MIMO antenna provided by the utility model can have the performances of low standing wave and wide frequency band under the condition of small size.

Description

MIMO antenna

Technical Field

The utility model relates to the technical field of antennas, in particular to a Multiple Input Multiple Output (MIMO) antenna.

Background

With the development of 5G technology, the requirements of products for antenna miniaturization and wide band are also increasing, and in order to realize miniaturization and broadband, a slot line or a non-planar structure on the antenna is generally adopted. The slotline approach may introduce unwanted frequencies while achieving the introduction of multiple resonant frequencies. While the non-planar structure can achieve broadband, it increases the size of the antenna.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a MIMO antenna with small size, low standing wave and wide frequency band.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a MIMO antenna, includes the base plate, locates half-wave oscillator arm on the base plate and with the ground is presented in half-wave oscillator arm coupling, half-wave oscillator arm is including locating the first half-wave oscillator arm, the second half-wave oscillator arm of base plate upside and locating the left third half-wave oscillator arm of base plate and fourth half-wave oscillator arm, half-wave oscillator arm be equipped with respectively with present the feed point that ground is connected.

As a further improved technical scheme of the utility model, the ground feeder is provided with feed points respectively connected with the feed points, and the feed points are connected with the feed points through coaxial cables.

As a further improved technical solution of the present invention, each pair of the feeding point and the feeding point is located on the central axis of the corresponding half-wave oscillator arm, the signal line of the coaxial cable is connected to the feeding point, and the ground line of the coaxial cable is connected to the feeding point.

As a further improved technical solution of the present invention, an outer side wall of the half-wave oscillator arm is arc-shaped, a first groove is recessed downward from a top wall of the half-wave oscillator arm, a second groove is recessed downward from a center of the first groove, openings of the second grooves on the first half-wave oscillator arm and the second half-wave oscillator arm are upward, and openings of the second grooves on the third half-wave oscillator arm and the fourth half-wave oscillator arm are leftward.

As a further improved technical scheme of the utility model, the material of the substrate is FR4 material.

As a further improved technical scheme of the utility model, the LED lamp also comprises a shell, wherein an insulating part is arranged in the middle of the shell, and the substrate is fixedly connected to the insulating part

As a further improved technical scheme of the utility model, the rest wall surfaces of the shell except the insulating part and the rest parts in the shell are made of metal materials.

As a further improved technical solution of the present invention, the substrate is bonded to the insulating portion.

As a further improved technical scheme of the utility model, the half-wave oscillator arm and the feed ground are both in a copper-clad structure.

Compared with the prior art, the MIMO antenna has the advantages that the half-wave oscillator arms and the ground feeding surface capable of being coupled with all the half-wave oscillator arms are arranged, so that the MIMO antenna has the performance of low standing wave and wide frequency band under the condition of small size.

Drawings

Fig. 1 is a schematic perspective view of a MIMO antenna according to the present invention;

fig. 2 is a schematic cross-sectional view of a substrate, a half-wave dipole arm and a ground plane of a MIMO antenna according to the present invention;

fig. 3-6 are graphs of the voltage standing wave ratio of the MIMO antenna of the present invention in the operating frequency band;

fig. 7-10 are graphs of gain and efficiency of the MIMO antenna of the present invention in the operating frequency band.

Reference numerals:

a first half-wave oscillator arm-1; a second half-wave oscillator arm-2; a third half-wave oscillator arm-3; a fourth half-wave oscillator arm-4; a shell-5; ground feed-6.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If several embodiments exist, the features of these embodiments may be combined with each other without conflict. When the description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The statements made in the following exemplary detailed description do not represent all implementations consistent with the present disclosure; rather, they are merely examples of apparatus, products, and/or methods consistent with certain aspects of the utility model, as set forth in the claims below.

The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. As used in the specification and claims of this invention, the singular form of "a", "an", or "the" is intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the use of terms such as "first," "second," and the like, in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "back," "up," "down," and the like in the description of the utility model are used for convenience of description and are not limited to a particular position or spatial orientation. The word "comprise" or "comprises", and the like, is an open-ended expression meaning that an element that precedes "includes" or "comprising" includes "that the element that follows" includes "or" comprises "and its equivalents, that do not preclude the element that precedes" includes "or" comprising "from also including other elements. If the utility model is referred to as "a plurality", it means two or more.

Referring to fig. 1 to 10, the present invention provides a MIMO antenna, which includes a housing 5, a substrate fixedly connected to the housing 5, a half-wave dipole arm disposed on the substrate, and a ground plane coupled to the half-wave dipole arm.

Referring to fig. 1, the housing 5 is substantially rectangular, and an inner cavity for accommodating the substrate, the half-wave resonator arm, the ground plane 6, and the like is recessed from a bottom wall to a top wall thereof. The middle part of the inner cavity is provided with a generally rectangular insulating part, and except the insulating part, the rest wall surfaces of the shell 5 and the rest parts in the inner cavity are made of metal materials.

The substrate is adhered to the insulating part, specifically, in this embodiment, the substrate is made of FR4 material, and the front surface of the substrate is completely treated with ink, and the substrate has a length of 115mm, a width of 108mm, and a thickness of 0.6 mm.

Referring to fig. 2, the half-wave oscillator arm is disposed on the substrate and radiates electromagnetic waves outwards, an outer side wall of the half-wave oscillator arm is substantially arc-shaped, a first groove is recessed downwards from a top wall of the half-wave oscillator arm, and a second groove is recessed downwards from a center of the first groove, so that mutual coupling of different parts is achieved, and a purpose of a broadband is achieved.

The half-wave oscillator arm comprises a first half-wave oscillator arm 1, a second half-wave oscillator arm 2, a third half-wave oscillator arm 3 and a fourth half-wave oscillator arm 4, wherein the first half-wave oscillator arm and the second half-wave oscillator arm are arranged on the upper side of the substrate, and the third half-wave oscillator arm and the fourth half-wave oscillator arm are arranged on the left side of the substrate. The openings of the second grooves in the first half-wave oscillator arm 1 and the second half-wave oscillator arm 2 face upward, and the openings of the second grooves in the third half-wave oscillator arm 3 and the fourth half-wave oscillator arm 4 face leftward.

Each half-wave oscillator arm is provided with a feeding point connected with the feed ground 6, and each feeding point is arranged on the central axis of the respective half-wave oscillator arm. Specifically, the lengths of the half-wave oscillator arms are respectively one fourth of the working wavelength of the half-wave oscillator arms, and the half-wave oscillator arms are of copper-clad structures.

The ground feeding surface 6 is coupled with the half-wave oscillator arm and is respectively provided with four feeding points connected with the four feeding points, and the feeding points are connected with the feeding points through coaxial cables. Each pair of the feed point and the feed point are positioned on the central axis of the corresponding half-wave oscillator arm, the signal line of the coaxial cable is connected with the feed point, and the ground line of the coaxial cable is connected with the feed point. Specifically, in the present embodiment, the ground plane has a copper-clad structure.

Fig. 3, 4, 5, and 6 show the voltage standing wave ratio of the MIMO antenna of the present invention in the operating frequency band, and the results show that the voltage standing wave ratio of the low frequency part is less than 4.5 and the voltage standing wave ratio of the high frequency part is less than 2.0 in the entire operating frequency band (1920-.

Fig. 7, 8, 9 and 10 show the gain and efficiency of the MIMO antenna of the present invention in its operating frequency band, and the results show that the MIMO antenna still can exhibit good efficiency and high gain.

Therefore, the MIMO antenna has strong anti-interference capability and can still keep good performance under complex conditions.

In summary, the MIMO antenna of the present invention is provided with the half-wave dipole arms and the ground feeding surface 6 capable of being coupled to all the half-wave dipole arms, so that the MIMO antenna of the present invention has the performance of low standing wave and wide frequency band under the condition of small size, and is simple in assembly, low in cost, and easy for mass production.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, such as the directional descriptions of "front", "back", "left", "right", "upper", "lower", etc., although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions on the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. The MIMO antenna is characterized by comprising a substrate, a half-wave oscillator arm arranged on the substrate and a ground feeder coupled with the half-wave oscillator arm, wherein the half-wave oscillator arm comprises a first half-wave oscillator arm, a second half-wave oscillator arm and a third half-wave oscillator arm and a fourth half-wave oscillator arm which are arranged on the upper side of the substrate and on the left side of the substrate, and the half-wave oscillator arms are respectively provided with a feeding point connected with the ground feeder.

2. The MIMO antenna of claim 1, wherein: and the feed ground is provided with feed points respectively connected with the feed points, and the feed points are connected with the feed points through coaxial cables.

3. The MIMO antenna of claim 2, wherein: each pair of the feed point and the feed point are positioned on the central axis of the corresponding half-wave oscillator arm, the signal line of the coaxial cable is connected with the feed point, and the ground line of the coaxial cable is connected with the feed point.

4. The MIMO antenna of claim 1, wherein: the outer side wall of the half-wave oscillator arm is arc-shaped, a first groove is formed in the top wall of the half-wave oscillator arm in a downward sunken mode, a second groove is formed in the center of the first groove in a downward sunken mode, the openings of the second grooves in the first half-wave oscillator arm and the second half-wave oscillator arm face upwards, and the openings of the second grooves in the third half-wave oscillator arm and the fourth half-wave oscillator arm face leftwards.

5. The MIMO antenna of claim 1, wherein: the material of the substrate is FR4 material.

6. The MIMO antenna of claim 1, wherein: still include the shell, the middle part of shell is equipped with insulating part, base plate fixed connection in on the insulating part.

7. The MIMO antenna of claim 6, wherein: and the rest wall surfaces of the shell except the insulating part and the rest parts in the shell are made of metal materials.

8. The MIMO antenna of claim 6, wherein: the substrate is bonded to the insulating portion.

9. The MIMO antenna of claim 1, wherein: the half-wave oscillator arm and the feed ground are both copper-clad structures.