CN215451760U - Antenna, dual-polarized antenna, MIMO antenna - Google Patents

Abstract

The utility model discloses an antenna, a dual-polarized antenna and an MIMO antenna, wherein the antenna comprises: the medium substrate is provided with a first surface and a second surface which are oppositely arranged, wherein the first surface of the medium substrate is provided with a first microstrip feed unit and a first out-of-roundness balancing unit which are oppositely arranged; and a second microstrip feed unit and a second out-of-roundness balancing unit are arranged on the second surface of the dielectric substrate and are arranged oppositely.

Description

Antenna, dual-polarized antenna, MIMO antenna

Technical Field

The utility model relates to the technical field of antennas, in particular to an antenna, a dual-polarized antenna and an MIMO antenna.

Background

At present, the cross type three-dimensional traffic becomes a novel development trend in a plurality of cities in China, and the track traffic pattern of the city three-dimensional crossing is originally formed at the present stage, and the cloud rail and the Yunba play an important role in promoting the track traffic of the city three-dimensional crossing. In the related art, the cloud rail and the cloud bar are to communicate by using the frequency band of the LTE-M, however, the existing LTE-M antenna cannot meet the requirements of the cloud rail and the cloud bar.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, a first object of the present invention is to propose an antenna to meet the requirements of the cloud track and the cloud bar.

A second object of the present invention is to provide a dual polarized antenna.

A third object of the present invention is to provide a MIMO antenna.

In order to achieve the above object, a first aspect of the present invention provides an antenna, including a dielectric substrate having a first surface and a second surface that are opposite to each other, wherein a first microstrip feed unit and a first out-of-roundness balancing unit are disposed on the first surface of the dielectric substrate, and the first microstrip feed unit and the first out-of-roundness balancing unit are opposite to each other; and a second microstrip feed unit and a second out-of-roundness balancing unit are arranged on the second surface of the dielectric substrate and are arranged oppositely.

In order to achieve the above object, a second aspect of the present invention provides a dual polarized antenna, including the above antenna.

In order to achieve the above object, a third aspect of the present invention provides a MIMO antenna, including the above antenna.

The antenna, the dual-polarized antenna and the MIMO antenna have the characteristics of high gain, low side lobe and small out-of-roundness, so that the requirements of a cloud rail and a cloud bar are met.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic diagram of an antenna of an embodiment of the present invention;

FIG. 2 is a front view of an antenna of one example of the present invention;

FIG. 3 is a reverse side view of an antenna of one example of the present invention;

FIG. 4 is a perspective view of an antenna of one example of the present invention;

fig. 5 is a front view of another example antenna of the present invention;

fig. 6 is a diagram of S11 for an antenna of an embodiment of the present invention;

fig. 7 is a 2D radiation pattern of an antenna of an embodiment of the present invention;

fig. 8 is a block diagram of a structure of a bipolar antenna according to an embodiment of the present invention;

fig. 9 is a block diagram of a MIMO antenna according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

An antenna, a dual polarization antenna, a MIMO antenna of the embodiments of the present invention are described below with reference to the drawings.

Fig. 1 is a schematic diagram of an antenna of an embodiment of the present invention.

As shown in fig. 1, the antenna 10 includes a dielectric substrate 11, the dielectric substrate 11 has a first surface 1 and a second surface 2 which are disposed opposite to each other, a first microstrip feeding unit 101 and a first out-of-roundness balancing unit 102 are disposed on the first surface 1, and the first microstrip feeding unit 101 and the first out-of-roundness balancing unit 102 are disposed opposite to each other. The second surface 2 is provided with a second microstrip feeding unit 201 and a second out-of-roundness balancing unit 202, and the second microstrip feeding unit 201 and the second out-of-roundness balancing unit 202 are disposed to face each other.

Specifically, referring to fig. 2, the first microstrip feed unit 101 includes a first microstrip line, a first oscillator, and a feed end, where the first microstrip line is connected to the first oscillator and the feed end respectively; the number of the first vibrators is two, the first vibrators are respectively marked as a first sub vibrator and a second sub vibrator, and the first sub vibrator and the second sub vibrator are respectively connected to two ends of the first microstrip line.

The length of the first element is an electrical length of the antenna 10 at 1/4 wavelengths, that is, the lengths of the first sub-element and the second sub-element are both electrical lengths of the antenna 10 at 1/4 wavelengths. The first microstrip line and the first out-of-roundness balancing unit 102 both adopt a U-shaped structure, and the length of the first out-of-roundness balancing unit 102 in the longitudinal direction is greater than the length of the first microstrip line in the longitudinal direction. The distance between the first out-of-roundness balancing unit 102 and the first oscillator in the transverse direction is 0.5mm-2mm, and the ratio of the closest distance between the first out-of-roundness balancing unit 102 and the center of the first oscillator in the longitudinal direction to the closest distance between the first microstrip line and the center of the first oscillator in the longitudinal direction is 3/5-2/3.

Further, referring to fig. 3, the second microstrip feeding unit 201 includes a second microstrip line, a second oscillator and a ground terminal, and the second microstrip line is connected to the second oscillator and the ground terminal respectively. The number of the second oscillators is two, and the two second oscillators are respectively marked as a third sub oscillator and a fourth sub oscillator, and the third sub oscillator and the fourth sub oscillator are respectively connected to two ends of the second microstrip line.

Specifically, the length of the second element is an electrical length of the antenna 10 at the use frequency of 1/4 wavelengths, that is, the lengths of the third sub-element and the fourth sub-element are both electrical lengths of the antenna 10 at the use frequency of 1/4 wavelengths. The second microstrip line and the second out-of-roundness balancing unit 202 both adopt a U-shaped structure, and the length of the second out-of-roundness balancing unit 202 in the longitudinal direction is greater than the length of the second microstrip line in the longitudinal direction. The distance between the second out-of-roundness balancing unit 202 and the second oscillator in the transverse direction is 0.5mm-2mm, and the ratio of the closest distance between the second out-of-roundness balancing unit 202 in the longitudinal direction and the center of the second oscillator to the closest distance between the second microstrip line in the longitudinal direction and the center of the second oscillator is 3/5-2/3.

It should be noted that, referring to fig. 4, the first microstrip line and the second microstrip line are disposed opposite to each other, the feeding end and the grounding end are disposed opposite to each other, and the first out-of-roundness balancing unit 102 and the second out-of-roundness balancing unit 202 are disposed opposite to each other. The first and second oscillators form a dipole, that is, the first and second oscillators form two pairs of dipoles, and further form a linear array from the two pairs of dipoles, specifically, the first and third sub-oscillators form a first dipole, the second and fourth sub-oscillators form a second dipole, and the first and second dipole form a linear array.

Therefore, the first and second out-of-roundness balancing units are oppositely arranged relative to the first and second microstrip feeding units, so that the out-of-roundness of the antenna 10 is reduced, the low side lobe is realized, and the main lobe has better gain. And because the first sub-oscillator, the second sub-oscillator, the third sub-oscillator and the fourth sub-oscillator form a linear array, the antenna 10 can have the characteristic of omnidirectional high gain, and low sidelobe is further realized. The first microstrip line and the second microstrip line which are oppositely arranged can not only realize the function of the power divider, but also realize the function of feeding. Because the first sub-oscillator, the second sub-oscillator, the third sub-oscillator and the fourth sub-oscillator are not all in the same straight line with the first microstrip line and the second microstrip line, not only can the height of the antenna 10 be reduced and the space be saved, but also the distance between the oscillators can be more conveniently adjusted, thereby reducing the mutual coupling between the oscillators and improving the performance of the antenna 10.

In the embodiment of the present invention, as an example, the first out-of-roundness balancing unit 102 includes a metal material coated on the first surface 1 of the dielectric substrate 11 in a U-shaped structure, and the second out-of-roundness balancing unit 202 includes a metal material coated on the second surface 2 of the dielectric substrate 11 in a U-shaped structure, as shown in fig. 4. As another example, a U-shaped opening is formed on the dielectric substrate 11, the first out-of-roundness balancing unit 102 includes a metal material coated around the U-shaped opening, and the second out-of-roundness balancing unit 202 includes a metal material coated around the U-shaped opening, as shown in fig. 5.

Referring to fig. 6, it can be seen that the antenna 10 of the embodiment of the present invention has good return loss in the frequency band of 1.785GHz to 1.805 GHz. Referring to fig. 7, it can be seen that the antenna 10 of the embodiment of the present invention has a gain of greater than 4.6dBi at all radiation angles, and has a high omni-directional gain.

In conclusion, the antenna provided by the embodiment of the utility model has the characteristics of omnidirectional high gain, low side lobe, small out-of-roundness and small size, and is simple in structure and easy to produce and process; especially, the performance is good in the frequency band of 1.785GHz-1.805 GHz. Therefore, the requirements of the cloud rail and the cloud bar can be met.

Fig. 8 is a block diagram of a dual polarized antenna according to an embodiment of the present invention.

As shown in fig. 8, the dual polarized antenna 20 includes the antenna 10 described above.

According to the dual-polarized antenna provided by the embodiment of the utility model, the antenna has the characteristics of omnidirectional high gain, low side lobe, small out-of-roundness and small size, and is simple in structure and easy to produce and process; especially, the performance is good in the frequency band of 1.785GHz-1.805 GHz. Therefore, the requirements of the cloud rail and the cloud bar can be met.

Fig. 9 is a block diagram of a MIMO antenna according to an embodiment of the present invention.

As shown in fig. 9, the MIMO antenna 30 includes the antenna 10 described above.

It should be noted that the radiation antenna in the MIMO antenna 30 according to the embodiment of the present invention is the antenna 10 described above.

According to the MIMO antenna provided by the embodiment of the utility model, the antenna has the characteristics of omnidirectional high gain, low side lobe, small out-of-roundness and small size, and is simple in structure and easy to produce and process; especially, the performance is good in the frequency band of 1.785GHz-1.805 GHz. Therefore, the requirements of the cloud rail and the cloud bar can be met.

It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An antenna, comprising: a dielectric substrate having a first face and a second face disposed opposite each other,

a first microstrip feed unit and a first out-of-roundness balancing unit are arranged on a first surface of the dielectric substrate and are arranged oppositely;

and a second microstrip feed unit and a second out-of-roundness balancing unit are arranged on the second surface of the dielectric substrate and are arranged oppositely.

2. The antenna of claim 1,

the first microstrip feed unit comprises a first microstrip line, a first oscillator and a feed end, and the first microstrip line is respectively connected with the first oscillator and the feed end;

the second microstrip feed unit comprises a second microstrip line, a second oscillator and a grounding end, and the second microstrip line is respectively connected with the second oscillator and the grounding end.

3. The antenna according to claim 2, wherein the first microstrip line is disposed opposite to the second microstrip line, the feeding terminal is disposed opposite to the ground terminal, the first out-of-roundness balancing unit and the second out-of-roundness balancing unit are disposed opposite to each other, and the first oscillator and the second oscillator form a dipole.

4. The antenna of claim 3,

the number of the first vibrators is two, the first vibrators are respectively marked as a first sub vibrator and a second sub vibrator, and the first sub vibrator and the second sub vibrator are respectively connected to two ends of the first microstrip line;

the number of the second oscillators is two, and the two second oscillators are respectively marked as a third sub oscillator and a fourth sub oscillator which are respectively connected to two ends of the second microstrip line;

the first sub-oscillator and the third sub-oscillator form a symmetrical oscillator, the second sub-oscillator and the fourth sub-oscillator form a symmetrical oscillator, and the first sub-oscillator, the second sub-oscillator, the third sub-oscillator and the fourth sub-oscillator form a linear array.

5. The antenna of any of claims 2-4, wherein the lengths of the first element and the second element are both electrical lengths of 1/4 wavelengths of the antenna use frequency.

6. The antenna according to any one of claims 2 to 4, wherein the first microstrip line and the first out-of-roundness balancing unit both adopt a U-shaped structure, and the length of the first out-of-roundness balancing unit in the longitudinal direction is greater than that of the first microstrip line in the longitudinal direction;

the second microstrip line and the second out-of-roundness balancing unit are both of U-shaped structures, and the length of the second out-of-roundness balancing unit in the longitudinal direction is greater than that of the second microstrip line in the longitudinal direction.

7. The antenna of claim 6, wherein the first out-of-roundness balancing unit is spaced apart from the first element in the transverse direction by 0.5mm to 2mm, and a ratio of a closest distance of the first out-of-roundness balancing unit to the first element center in the longitudinal direction to a closest distance of the first microstrip line to the first element center in the longitudinal direction is 3/5 to 2/3.

8. The antenna of claim 6,

the first out-of-roundness balancing unit comprises a metal material which is coated on the first surface of the medium substrate and has a U-shaped structure, and the second out-of-roundness balancing unit comprises a metal material which is coated on the second surface of the medium substrate and has a U-shaped structure; alternatively, the first and second electrodes may be,

the medium substrate is provided with a U-shaped opening, the first out-of-roundness balancing unit comprises a metal material coated around the U-shaped opening of the medium substrate, and the second out-of-roundness balancing unit comprises a metal material coated around the U-shaped opening of the medium substrate;

and (4) forming holes at the positions where the upper surface and the lower surface are coated with copper, and carrying out copper coating treatment on the periphery of the holes.

9. A dual polarized antenna comprising an antenna according to any of claims 1-8.

10. A MIMO antenna comprising an antenna according to any of claims 1-8.

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