CN209804897U - Multiple-input multiple-output antenna and terminal equipment - Google Patents
Multiple-input multiple-output antenna and terminal equipment Download PDFInfo
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- CN209804897U CN209804897U CN201920569107.6U CN201920569107U CN209804897U CN 209804897 U CN209804897 U CN 209804897U CN 201920569107 U CN201920569107 U CN 201920569107U CN 209804897 U CN209804897 U CN 209804897U
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Abstract
The embodiment of the utility model provides a multiple input multiple output antenna and terminal equipment, include: the antenna comprises a first antenna unit, a second antenna unit and a decoupling network consisting of microstrip lines; the decoupling network is of a mirror symmetry structure, is connected between the first antenna unit and the second antenna unit, and is used for eliminating complex signals between the first antenna unit and the second antenna unit. The embodiment of the utility model provides a multiple input multiple output antenna can reduce first antenna element with transmission admittance between the second antenna element effectively gets rid of first antenna element with complex signal between the second antenna element, thereby reduce first antenna element with degree of coupling between the second antenna element improves each antenna element's performance, guarantees the quality of antenna transmission data to this multiple input multiple output antenna simple structure easily realizes, and with low costs.
Description
Technical Field
The embodiment of the utility model provides a relate to antenna technical field, especially relate to a multiple input multiple output antenna and terminal equipment.
Background
Mobile communication is one of the fastest growing areas today and has undergone several generations of revolution. With the advent of the 4G and 5G communication era, intelligent terminals have become the main tools for people to surf the internet, and have been required to be able to complete data transmission adapted to the multi-generation communication standards. The antenna of the intelligent terminal plays an important role as a key component for data receiving and transmitting.
In the prior art, the frequency requirements used by different generations of communication standards can be met by arranging a plurality of antennas respectively working at different frequency points in the same intelligent terminal.
however, due to the limitation of the size provided by the smart terminal, the spatial distance between the antennas cannot be greater than or equal to one wavelength, and the proximity causes the coupling between the antennas to be too high, which leads to the performance degradation of the antennas and affects the data transmission quality.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a multiple input multiple output antenna and terminal equipment to reduce the coupling degree between each antenna element, improve communication quality, avoid increasing the antenna-to-antenna distance and occupy intelligent terminal too much space.
In a first aspect, an embodiment of the present invention provides a mimo antenna, including: the antenna comprises a first antenna unit, a second antenna unit and a decoupling network consisting of microstrip lines;
the decoupling network is of a mirror symmetry structure, is connected between the first antenna unit and the second antenna unit, and is used for eliminating complex signals between the first antenna unit and the second antenna unit.
in one possible design, the decoupling network includes: a first sub-network and a second sub-network;
One end of the first sub-network is connected with the first antenna unit, and the other end of the first sub-network is connected with the second antenna unit, so as to eliminate a real part signal between the first antenna unit and the second antenna unit;
one end of the second sub-network is connected to the first antenna unit and/or the second antenna unit, and the other end of the second sub-network is suspended for eliminating an imaginary signal between the first antenna unit and the second antenna unit.
in one possible design, the decoupling network includes:
The two ends of the straight microstrip line body extend upwards and are respectively connected with the first antenna unit and the second antenna unit;
And the E-shaped fork structures are oppositely arranged on the microstrip line main body, and the upper ends and the lower ends of the E-shaped fork structures are suspended in the air.
in one possible design, the first antenna element is arranged mirror-symmetrically to the second antenna element.
in one possible design, the first antenna element is placed orthogonal to the second antenna element.
In one possible design, the first antenna element and the second antenna element are located in the same plane.
in one possible design, the mimo antenna further includes: the antenna comprises a grounding plate, a dielectric substrate, a first feed end positioned at the bottom end of the first antenna unit and a second feed end positioned at the bottom end of the second antenna unit;
The first feed end and the second feed end are used for being connected with a feed microstrip line; the first antenna unit, the second antenna unit, the first feed end, the second feed end and the ground plate are all printed structures on the surface of the dielectric substrate.
In one possible design, the first antenna element is a monopole antenna.
in one possible design, the first antenna element and the second antenna element each include: a first antenna portion and a second antenna portion which are perpendicular to each other;
The first antenna part is vertically arranged, the second antenna part is connected with the upper end of the first antenna part, one end of the second antenna part, far away from the first antenna part, extends downwards to form an extending part, and the end part of the extending part extends to the first antenna part for a preset distance.
In a second aspect, an embodiment of the present invention provides a terminal device, including any one of the above-mentioned mimo antennas.
In the mimo antenna and the terminal device provided by this embodiment, the mirror-symmetric decoupling network formed by microstrip lines is disposed between the first antenna unit and the second antenna unit, so that the transmission admittance between the first antenna unit and the second antenna unit can be reduced, and the complex signal between the first antenna unit and the second antenna unit can be effectively removed, thereby reducing the coupling degree between the first antenna unit and the second antenna unit, improving the performance of each antenna unit, and ensuring the quality of antenna transmission data.
drawings
In order to illustrate more clearly the embodiments of the invention or the technical solutions in the prior art, the drawings which are needed in the description of the embodiments of the invention or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the invention, and the drawings and the description are not intended to limit the scope of the disclosed concept in any way, but to illustrate the disclosed concept for a person skilled in the art by referring to a specific embodiment, and for a person skilled in the art, other drawings can be obtained from the drawings without inventive effort.
fig. 1 is a schematic structural diagram of a mimo antenna according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram of a mimo antenna according to another embodiment of the present invention;
Fig. 3 is a schematic diagram illustrating simulation of S parameters of a mimo antenna according to another embodiment of the present invention;
fig. 4 is a schematic diagram illustrating simulation of the E-plane far-field radiation direction at the frequency point of 2.0GHz when the first feeding end of the mimo antenna according to another embodiment of the present invention is excited;
Fig. 5 is a schematic diagram illustrating simulation of the H-plane far-field radiation direction at the frequency point of 2.0GHz when the first feeding end of the mimo antenna according to another embodiment of the present invention is excited;
Fig. 6 is a schematic diagram illustrating simulation of the E-plane far-field radiation direction at the frequency point of 2.0GHz when the second feeding end of the mimo antenna provided by the present invention is excited;
Fig. 7 is a schematic diagram illustrating simulation of the H-plane far-field radiation direction at the frequency point of 2.0GHz when the second feeding terminal of the mimo antenna according to another embodiment of the present invention is excited.
Description of reference numerals:
10: a first antenna element;
20: a second antenna element;
30: a decoupling network;
31: a first sub-network;
32: a second sub-network;
40: a first feed end;
50: a second feed end;
60: a dielectric substrate;
70: a ground plate.
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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
It should be understood that the following examples do not limit the order of execution of the steps of the method claimed by the present invention. The individual steps of the method of the invention can be carried out in any possible sequence and in a cyclic manner without contradiction.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Furthermore, references to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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.
the specific embodiment is as follows:
Fig. 1 is a schematic structural diagram of a mimo antenna according to an embodiment of the present invention. As shown in fig. 1, the mimo antenna includes: a first antenna element 10, a second antenna element 20 and a decoupling network 30 consisting of microstrip lines.
The decoupling network 30 is a mirror symmetry structure, is connected between the first antenna unit 10 and the second antenna unit 20, and is configured to cancel a complex signal between the first antenna unit 10 and the second antenna unit 20.
the microstrip line refers to a microwave transmission line formed by a single conductor strip supported on a dielectric substrate. The planar structure transmission line is suitable for manufacturing microwave integrated circuits. Compared with a metal waveguide, the waveguide has the advantages of small volume, light weight, wide use frequency band, high reliability, low manufacturing cost and the like.
alternatively, the microstrip line width may be adjusted, typically between 0.5mm and 1.5mm, for example, the microstrip line width may be 0.7 mm.
Optionally, the first antenna unit 10 and the second antenna unit 20 may be disposed in a plurality of manners, for example, the first antenna unit 10 and the second antenna unit 20 may be disposed on opposite sides of the dielectric substrate 60 to increase the distance, and the first antenna unit 10 and the second antenna unit 20 may be disposed on the same side of the dielectric substrate 60, so as to adjust parameters to make the two antenna units more matched.
The working process of the mimo antenna provided in this embodiment is as follows: the first antenna element 10 and the second antenna element 20 may be respectively provided with feeding ends, and the two feeding ends may be connected to a signal transceiving system in the smart terminal through a feeding microstrip line. A decoupling network 30 disposed between the first antenna unit 10 and the second antenna unit 20 during the process of transmitting and receiving signals, wherein the decoupling network 30 filters the signals between the first antenna unit 10 and the second antenna unit 20 to eliminate the real part signals and the imaginary part signals between the first antenna unit 10 and the second antenna unit 20. Alternatively, the real and imaginary signals may be cancelled by different components of the decoupling network 30, respectively.
In the mimo antenna provided in this embodiment, the mirror-symmetric decoupling network 30 composed of microstrip lines is disposed between the first antenna unit 10 and the second antenna unit 20, so that the transmission admittance between the first antenna unit 10 and the second antenna unit 20 can be reduced, and the complex signals between the first antenna unit 10 and the second antenna unit 20 can be effectively removed, thereby reducing the coupling degree between the first antenna unit 10 and the second antenna unit 20, improving the performance of each antenna unit, and ensuring the quality of antenna transmission data.
in the prior art, there are other ways to reduce the coupling degree between two antenna elements in the mimo antenna (i.e. to improve the isolation between two antenna elements), for example: by forming slots of different forms on the ground plate 70 between the two antenna units, part of the coupling current between the two antenna units can be guided to the slots to play a role of trapping, so that the transmission of the current between the two antenna units is hindered, and the isolation between the two antenna units is improved. However, the slot technology can only improve the isolation for a specific frequency band, when the frequency band of the mimo antenna changes, the slot can only be redesigned, and the slot technology requires to slot on the ground plate 70, which affects the size of the terminal and is difficult to avoid the influence of peripheral devices, and is not practical in practical products. It is also possible to introduce the coupling current between the two antenna elements to the ground plane 70 for neutralization by adding a neutralization line and associated lc matching devices between the two antenna elements, however, this approach provides an antenna with a complex structure and also increases the cost due to the use of lc and other devices. The mimo antenna provided in this embodiment adopts the decoupling network 30 formed by microstrip lines to perform filtering decoupling, has a simple structure, is low in cost, and is easy to implement, and overcomes the defects of the above conventional schemes.
On the basis of the embodiment shown in fig. 1, the decoupling network 30 is described in detail in the mimo antenna according to another embodiment of the present invention, and in this embodiment, the decoupling network 30 includes: a first subnetwork 31 and a second subnetwork 32.
One end of the first sub-network 31 is connected to the first antenna unit 10, and the other end of the first sub-network 31 is connected to the second antenna unit 20, so as to cancel the real part signal between the first antenna unit 10 and the second antenna unit 20.
One end of the second sub-network 32 is connected to the first antenna unit 10 and/or the second antenna unit 20, and the other end is floating for canceling the imaginary signal between the first antenna unit 10 and the second antenna unit 20.
Optionally, the first sub-network 31 includes a first left structure and a first right structure arranged in mirror symmetry, and is configured to eliminate a real part signal between the first antenna unit 10 and the second antenna unit 20, that is, to change a real part of a transmission admittance between the first antenna unit 10 and the second antenna unit 20 to zero; wherein the first left structure and the first right structure are both connected between the first antenna unit 10 and the second antenna unit 20; the second sub-network 32 comprises a second left structure and a second right structure arranged mirror-symmetrically for canceling imaginary signals between the first antenna element 10 and the second antenna element 20, i.e. for nulling an imaginary part of a transmission admittance between the first antenna element 10 and the second antenna element 20; wherein the second left structure and the second right structure comprise suspended ports; the first antenna unit 10 is connected to the second antenna unit 20 through the first left structure, the second right structure, and the first right structure in sequence. I.e. one end of the second sub-network 32 is connected to the first antenna unit 10 and the second antenna unit 20, respectively, via the first sub-network 31.
The mimo antenna provided in this embodiment removes a real part signal between two antenna elements (the first antenna element 10 and the second antenna element 20) through a first sub-network 31 connected to the two antenna elements, respectively, and removes an imaginary part signal between the two antenna elements through a second sub-network 32 having a free end. The transmission impedance between the two antenna units can be changed into zero, complex signals between the two antenna units are eliminated, the isolation between the two antenna units is improved, and the phenomenon that the performance of the antenna is reduced and the data transmission quality is affected due to the fact that the two antenna units are coupled too much is avoided.
On the basis of the above embodiment, the structure of the decoupling network 30 is described in detail by a mimo antenna according to another embodiment of the present invention, in this embodiment, the decoupling network 30 includes: two ends of the straight microstrip line body extend upwards and are respectively connected with the first antenna unit 10 and the second antenna unit 20.
And the E-shaped fork structures are oppositely arranged on the microstrip line main body, and the upper ends and the lower ends of the E-shaped fork structures are suspended in the air.
In this embodiment, the E-shaped fork structure may be used to eliminate an imaginary signal between the first antenna unit 10 and the second antenna unit 20, that is, to change a transmission admittance between the first antenna unit 10 and the second antenna unit 20 into a pure real number. The L-shaped structure formed by the microstrip line body and the extension parts extending upwards at two ends can be used for eliminating the real part signal between the first antenna unit 10 and the second antenna unit 20, that is, changing the real number of the transmission admittance between the first antenna unit 10 and the second antenna unit 20 to zero.
alternatively, the E-shaped fork structure may have various modifications, for example, the upper and lower cross lines of the upper, middle and lower three cross lines of the E-shaped structure may be configured to have a certain curvature. Or adding more branches to the E-type structure.
On the basis of the above embodiment, the first antenna element 10 and the second antenna element 20 are arranged in mirror symmetry. Optionally, the first antenna unit 10 and the second antenna unit 20 are located on the same plane.
The mimo antenna provided by this embodiment eliminates a real part signal between two antenna units by using the microstrip line main body and the upward extension part thereof, and eliminates an imaginary part signal between two antenna units by setting the E-shaped fork structure of the microstrip line main body, so that transmission impedance between two antenna units can be changed to zero, a complex signal between two antenna units is eliminated, isolation between two antenna units is improved, and it is avoided that coupling between two antenna units is too large, which leads to antenna performance degradation, and affects data transmission quality. The decoupling network 30 has a simple structure, low cost and is easy to implement.
On the basis of the above embodiment, in order to further increase the spatial isolation between the first antenna unit 10 and the second antenna unit 20, the present invention further provides a mimo antenna, which further defines the spatial arrangement manner of the two antenna units, in this embodiment, the first antenna unit 10 and the second antenna unit 20 are orthogonally disposed.
in a specific embodiment, the first antenna element 10 and the second antenna element 20 may be disposed on the same plane and perpendicular to each other to achieve an orthogonal placement.
in another specific implementation manner, a first plane where the first antenna unit 10 is located and a second plane where the second antenna unit 20 is located may perpendicularly intersect at a first intersection line, and the first antenna unit 10 and the second antenna unit 20 may be arranged in mirror symmetry with a third plane where the first intersection line is located and forms an angle of 45 degrees with both the first plane and the second plane as a symmetry plane.
In the mimo antenna provided in this embodiment, the first antenna element 10 and the second antenna element 20 are orthogonally disposed, so that surface currents of the two antenna elements can be concentrated as close as possible to the antenna elements, coupling to other devices around the antenna elements is reduced, and isolation of the two antenna elements in a free space is improved.
fig. 2 is a mimo antenna according to another embodiment of the present invention, wherein on the basis of the above embodiment, the mimo antenna further includes: a ground plate 70, a dielectric substrate 60, a first feeding end 40 at the bottom end of the first antenna unit 10, and a second feeding end 50 at the bottom end of the second antenna unit 20.
The first feeding end 40 and the second feeding end 50 are used for connecting feeding microstrip lines; the first antenna element 10, the second antenna element 20, the first feeding end 40, the second feeding end 50, and the ground plate 70 are all printed structures on the surface of the dielectric substrate 60.
Alternatively, the first antenna element 10 may be a monopole antenna. Monopole antenna the monopole antenna is a vertical quarter-wave antenna. In free space, the radiation pattern of a quarter-wave monopole antenna in the vertical plane is similar in shape to the pattern of a half-wave dipole antenna in the vertical plane, but without subsurface radiation. In the horizontal plane, the vertical monopole antenna is omni-directional. Greater bandwidth can be achieved by using monopole antennas. Alternatively, the antenna may be enabled to cover the 1.8Ghz-3.1Ghz operating band.
the surface wave coupling can be reduced by selecting a proper dielectric thickness, and optionally, the dielectric substrate 60 can adopt a flame-retardant material of FR4 grade with an area of 60 × 60mm and a thickness of 1.6mm and a dielectric constant of 4.4 +/-3%, so that excessive surface wave coupling is avoided when the ratio between the thickness and the wavelength of the dielectric substrate 60 of the multi-input multi-output antenna reaches a certain value.
Alternatively, the first antenna element 10 and the second antenna element 20 are configured as printed monopole radiation patches, and the two printed monopole radiation patches are located on the same side of the cubic dielectric substrate 60, and the signal line of the radiation system of the intelligent terminal may be directly connected to the two printed monopole radiation patches through a feed microstrip line.
Alternatively, the antenna may be made of various materials, for example, a 0.5mm thick copper plate or a 0.2mm thick tin-plated steel plate may be used. The cost performance of the two materials is high, and the low manufacturing cost can be guaranteed.
The multiple-input multiple-output antenna provided by the embodiment can further increase the isolation of the free space by orthogonally placing the two antenna units, and avoids the phenomenon that the performance of the antenna is reduced and the data transmission quality is influenced due to the fact that the two antenna units are excessively coupled. Furthermore, the monopole antenna with a linear polarization mode and a simple structure can obtain larger bandwidth on the premise of ensuring low cost so as to enlarge the application range of the antenna. Coupled with the broadband filtering action of the decoupling network 30, further reduces coupling between the antenna elements. The impedance frequency bandwidth of the antenna can be 1.86GHz (1.24GHz-3.10GHz), and the working frequency band comprises frequency points of GSM 1.9GHz, Wi-Fi 2.4GHz, Bluetooth 2.4GHz, FDD LTE2.5-2.7GHz and the like in intelligent terminal communication.
on the basis of the above embodiments, in order to further increase the bandwidth of each antenna unit, the mimo antenna according to another embodiment of the present invention further defines the structures of the first antenna unit 10 and the second antenna unit 20, and in the mimo antenna provided in this embodiment, the first antenna unit 10 and the second antenna unit 20 both include: a first antenna portion and a second antenna portion perpendicular to each other.
the first antenna part is vertically arranged, the second antenna part is connected with the upper end of the first antenna part, one end of the second antenna part, far away from the first antenna part, extends downwards to form an extending part, and the end part of the extending part extends to the first antenna part for a preset distance.
in the mimo antenna provided in this embodiment, the first antenna unit 10 and the second antenna unit 20 are configured in the same structure and configured in a structure similar to an F-shape, so that the bandwidth of the antenna can be further increased to meet frequency requirements under different communication standards. Alternatively, the operating frequency band of the antenna unit may be 1.8Ghz-3.1 Ghz. The working frequency band comprises frequency points of GSM 1.9GHz, Wi-Fi 2.4GHz, Bluetooth 2.4GHz, FDD LTE2.5-2.7GHz and the like in intelligent terminal communication.
Fig. 3 is a schematic diagram of simulation of S-parameters of a mimo antenna according to another embodiment of the present invention. If the decoupling network 30 composed of microstrip lines is not added between the two antenna units, the worst isolation between the two antenna units is only-6 dB, and the design requirement cannot be met. As shown in fig. 3, it can be known from the curve C that the coupling degrees of the mimo antenna provided by the present embodiment in the frequency bands of 1.24GHz to 3.10GHz are all lower than-19.2 dB, and can completely meet the standard of less than-15 dB required by engineering design.
Fig. 4 is a schematic diagram illustrating simulation of the E-plane far-field radiation direction at the frequency point of 2.0GHz when the first feeding end 40 of the mimo antenna according to another embodiment of the present invention is excited; fig. 5 is a schematic diagram illustrating simulation of the H-plane far-field radiation direction at the frequency point of 2.0GHz when the first feeding terminal 40 of the mimo antenna according to another embodiment of the present invention is excited; fig. 6 is a schematic diagram illustrating simulation of the E-plane far-field radiation direction at the frequency point of 2.0GHz when the second feeding end 50 of the mimo antenna according to another embodiment of the present invention is excited; fig. 7 is a schematic diagram illustrating simulation of the H-plane far-field radiation direction at the frequency point of 2.0GHz when the second feeding end 50 of the mimo antenna according to another embodiment of the present invention is excited; as shown in fig. 4 to 7, the two antenna elements have uniform radiation characteristics in the plane normal direction, and as can be seen from the radiation characteristics in the main polarization direction and the cross polarization direction, the radiation in the main polarization direction is much larger than the radiation in the cross polarization direction, so that both antenna elements have good cross polarization isolation.
The utility model discloses still provide a terminal equipment, including any above-mentioned embodiment the multiple input multiple output antenna.
In the terminal device provided by this embodiment, by using the mimo antenna provided by any of the above embodiments, and by providing the mirror-symmetric decoupling network 30 composed of microstrip lines between the first antenna unit 10 and the second antenna unit 20, the mimo antenna can reduce the transmission admittance between the first antenna unit 10 and the second antenna unit 20, and effectively remove the complex signal between the first antenna unit 10 and the second antenna unit 20, thereby reducing the coupling degree between the first antenna unit 10 and the second antenna unit 20, improving the performance of each antenna unit, and ensuring the quality of antenna transmission data.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A multiple-input multiple-output antenna, comprising: the antenna comprises a first antenna unit, a second antenna unit and a decoupling network consisting of microstrip lines;
The decoupling network is of a mirror symmetry structure, is connected between the first antenna unit and the second antenna unit, and is used for eliminating complex signals between the first antenna unit and the second antenna unit.
2. The mimo antenna of claim 1, wherein the decoupling network comprises: a first sub-network and a second sub-network;
One end of the first sub-network is connected with the first antenna unit, and the other end of the first sub-network is connected with the second antenna unit, so as to eliminate a real part signal between the first antenna unit and the second antenna unit;
one end of the second sub-network is connected to the first antenna unit and/or the second antenna unit, and the other end of the second sub-network is suspended for eliminating an imaginary signal between the first antenna unit and the second antenna unit.
3. The mimo antenna of claim 1, wherein the decoupling network comprises:
The two ends of the straight microstrip line body extend upwards and are respectively connected with the first antenna unit and the second antenna unit;
And the E-shaped fork structures are oppositely arranged on the microstrip line main body, and the upper ends and the lower ends of the E-shaped fork structures are suspended in the air.
4. The mimo antenna of claim 1, wherein the first antenna element is arranged mirror-symmetrically to the second antenna element.
5. The mimo antenna of claim 4, wherein the first antenna element is disposed orthogonally to the second antenna element.
6. The mimo antenna of claim 4, wherein the first antenna element and the second antenna element are located in a same plane.
7. The mimo antenna of claim 1, further comprising: the antenna comprises a grounding plate, a dielectric substrate, a first feed end positioned at the bottom end of the first antenna unit and a second feed end positioned at the bottom end of the second antenna unit;
The first feed end and the second feed end are used for being connected with a feed microstrip line; the first antenna unit, the second antenna unit, the first feed end, the second feed end and the ground plate are all printed structures on the surface of the dielectric substrate.
8. the mimo antenna of any one of claims 1-7, wherein the first antenna element is a monopole antenna.
9. the mimo antenna of claim 8, wherein the first antenna element and the second antenna element each comprise: a first antenna portion and a second antenna portion which are perpendicular to each other;
the first antenna part is vertically arranged, the second antenna part is connected with the upper end of the first antenna part, one end of the second antenna part, far away from the first antenna part, extends downwards to form an extending part, and the end part of the extending part extends to the first antenna part for a preset distance.
10. A terminal device, characterized in that it comprises a multiple-input multiple-output antenna according to any one of claims 1 to 9.
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| CN201920569107.6U CN209804897U (en) | 2019-04-24 | 2019-04-24 | Multiple-input multiple-output antenna and terminal equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110233349A (en) * | 2019-04-24 | 2019-09-13 | 西安易朴通讯技术有限公司 | Multi-input/output antenna and terminal device |
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| CN110233349A (en) * | 2019-04-24 | 2019-09-13 | 西安易朴通讯技术有限公司 | Multi-input/output antenna and terminal device |
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