CN112271457A - Millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication device - Google Patents
Millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication device Download PDFInfo
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- CN112271457A CN112271457A CN202011209977.6A CN202011209977A CN112271457A CN 112271457 A CN112271457 A CN 112271457A CN 202011209977 A CN202011209977 A CN 202011209977A CN 112271457 A CN112271457 A CN 112271457A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
Abstract
The embodiment of the invention provides a millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication equipment. The antenna comprises four branch areas which are spliced in a cross shape, wherein each branch area comprises a trapezoidal area close to the center of the cross shape, a rectangular area far away from the center of the cross shape and a strip-shaped area connecting the trapezoidal area and the rectangular area, and the upper bottom of the trapezoidal area is opposite to the long edge of the corresponding rectangular area. The antenna includes: the metal plate comprises a top metal plate, a grounded bottom metal plate and a dielectric substrate positioned between the bottom metal plate and the top metal plate; parts of the top metal plate corresponding to the four trapezoidal areas are hollowed out to form four trapezoidal gaps; parts of the bottom metal plate corresponding to the four rectangular areas are hollowed out to form four rectangular gaps; four metal patches are pasted on the surface of the dielectric substrate facing the bottom metal plate, and the metal patches are arranged in a rectangular area; the integral structure of the bottom metal plate, the medium substrate and the top metal plate is provided with metal through holes arranged around the edges of the branch areas.
Description
Technical Field
The embodiment of the invention relates to the technical field of wireless communication, in particular to a millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication equipment.
Background
With the development of the fifth generation mobile communication technology (5G) and the increasing requirements of users on communication quality and speed, the mimo technology becomes a key technology for realizing more efficient mobile communication. The mimo technology is to use a plurality of transmitting antennas and receiving antennas at a transmitting end and a receiving end of a communication system, respectively, so that a communication signal to be transmitted can be transmitted and received through the plurality of antennas at the transmitting end and the receiving end, thereby improving and enhancing communication quality. The multiple-input multiple-output technology has great advantages in the aspects of improving the spectrum efficiency, the reliability of information transmission and the like of a communication system, can fully utilize space resources, improve the channel capacity of the communication system, and can improve the throughput rate of data on the premise of not increasing the communication bandwidth, thereby meeting the requirements of users on the communication quality. In the mimo technology, an antenna plays an important role as a key input/output component.
Because the mobile phone antenna has a high requirement on the size of the antenna and needs to meet the design requirements of miniaturization and easy integration, the mobile phone antenna generally adopts an electrically small antenna which often adopts a microstrip patch antenna structure. When a plurality of electrically small antennas are arranged on the mobile phone, the phenomenon of mutual coupling among the antennas is serious, and the communication performance of the mobile phone is influenced.
Disclosure of Invention
The embodiment of the invention aims to provide a millimeter wave multiple-input multiple-output antenna and millimeter wave multiple-input multiple-output communication equipment so as to improve the communication performance of a mobile phone. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a millimeter wave multiple-input multiple-output antenna, including four branch regions spliced in a cross shape, where each branch region includes a trapezoidal region close to a center of the cross shape, a rectangular region far from the center of the cross shape, and a strip region connecting the trapezoidal region and the rectangular region, an upper bottom of the trapezoidal region is disposed opposite to a long side of a corresponding rectangular region, and the millimeter wave multiple-input multiple-output antenna includes: the device comprises a top metal plate 1, a grounded bottom metal plate 2 and a dielectric substrate 3 positioned between the bottom metal plate 2 and the top metal plate 1; wherein the content of the first and second substances,
the top metal plate 1 is hollowed out at the parts corresponding to the four trapezoidal areas to form four trapezoidal gaps 4;
the bottom metal plate 2 is hollowed out at the parts corresponding to the four rectangular areas to form four rectangular gaps 5;
four metal patches 6 are pasted on the surface of the dielectric substrate 3 facing the bottom metal plate 2, and the four metal patches 6 are respectively arranged in four rectangular areas;
the overall structure of the bottom metal plate 2, the dielectric substrate 3 and the top metal plate 1 has four sets of metal through holes 7 arranged around the four branch region edges, respectively.
Optionally, the rectangular slot 5 corresponding to each rectangular area and the metal patch 6 in the rectangular slot form a converter.
Optionally, the metal through holes 7 surrounding the rectangular region are arranged in a plurality of rows along the direction away from the rectangular region, and the metal through holes 7 surrounding the trapezoidal region are arranged in a plurality of rows along the direction away from the trapezoidal region; the spacing between the metal vias 7 surrounding the rectangular or trapezoidal regions is smaller than the spacing between the metal vias 7 surrounding the stripe regions.
Optionally, the four trapezoidal slits 4 have the same size; the four rectangular slits 5 are of the same size.
Optionally, the millimeter wave mimo antenna further includes: a reflective cover plate 8 and a spacer 9;
the reflecting cover plate 8 is fixed above the four trapezoidal gaps 4 through the cushion columns 9.
Optionally, the medium between the reflective cover plate 8 and the trapezoidal slit 4 includes air.
Optionally, the material of the reflective cover plate 8 includes a rocky plate material.
Optionally, the top metal plate 1, the bottom metal plate 2, the metal patch 6 and the metal via 7 are made of the same material.
Optionally, the integral structure of the bottom metal plate 2, the dielectric substrate 3 and the top metal plate 1 further has a plurality of insertion holes 10; the insertion hole 10 is used for inserting a fixing component to fix the millimeter wave multiple input multiple output antenna.
In a second aspect, an embodiment of the present invention provides a millimeter wave multiple-input multiple-output communication device, where the millimeter wave multiple-input multiple-output communication device includes the millimeter wave multiple-input multiple-output antenna described in the first aspect.
According to the millimeter wave multiple-input multiple-output antenna and the millimeter wave multiple-input multiple-output communication device provided by the embodiment of the invention, the top metal plate, the bottom metal plate, the dielectric substrate and the metal through hole form the substrate integrated waveguide structure, the substrate integrated waveguide structure is a planar structure, the size of the antenna is reduced, and the planar structure is easy to integrate with other devices. Besides, metal through holes are formed in the periphery of the trapezoidal gap serving as the antenna unit, except the side opposite to the rectangular gap, the other three sides of the trapezoidal gap are provided with metal through holes, the metal through holes inhibit signals from being transmitted at other positions except the position between the trapezoidal gap and the rectangular gap, the mutual coupling phenomenon between the antennas is reduced, and the communication performance of the mobile phone is improved.
Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1a is a front view of a millimeter wave mimo antenna according to an embodiment of the present invention;
fig. 1b is a bottom view of a millimeter wave mimo antenna according to an embodiment of the present invention;
fig. 1c is a top view of a millimeter wave mimo antenna according to an embodiment of the present invention;
fig. 2 is a simulation diagram of reflection coefficients of a millimeter wave mimo antenna provided in an embodiment of the present invention in a working frequency band range;
fig. 3 is a simulation diagram of transmission coefficients of a millimeter wave mimo antenna in a working frequency band according to an embodiment of the present invention;
fig. 4 is a simulation diagram of peak gain of a millimeter wave mimo antenna in a working frequency band according to an embodiment of the present invention;
fig. 5a is a simulation diagram of a radiation pattern of an XOZ plane of a first trapezoidal slit according to an embodiment of the present invention;
fig. 5b is a simulated diagram of a radiation pattern of the YOZ plane of the first trapezoidal slit according to the embodiment of the present invention;
fig. 5c is a simulated diagram of a radiation pattern of the XOZ plane of the third trapezoidal slit according to the embodiment of the present invention;
fig. 5d is a simulated diagram of a radiation pattern of the YOZ plane of the third trapezoidal slit according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to improve the communication performance of the mobile phone, referring to fig. 1a to 1c, an overall structure of a millimeter wave mimo antenna according to an embodiment of the present invention includes four branch regions spliced in a cross shape; every branch region is regional including the trapezoidal region that is close to the cross center, keep away from the rectangular region at cross center and connect the bar region of trapezoidal region and rectangular region, and the long limit in the upper base and the rectangular region that corresponds in trapezoidal region sets up relatively, millimeter wave multiple input multiple output antenna includes: a top metal sheet 1, a grounded bottom metal sheet 2 and a dielectric substrate 3 located between the bottom metal sheet 2 and the top metal sheet 1.
The top metal plate 1 is hollowed out at the part corresponding to the four trapezoidal areas to form four trapezoidal gaps 4; the parts of the bottom metal plate 2 corresponding to the four rectangular areas are hollowed out to form four rectangular gaps 5; four metal patches 6 are pasted on the surface of the dielectric substrate 3 facing the bottom metal plate 2, the four metal patches 6 are respectively arranged in the four rectangular areas, and the metal patches 6 are not connected with the bottom metal plate 2. The overall structure of the bottom metal plate 2, the dielectric substrate 3 and the top metal plate 1 has four sets of metal through holes 7 arranged around the four branch region edges, respectively.
In the embodiment of the present invention, each metal via 7 passes through the top metal plate 1, the dielectric substrate 3 and the grounded bottom metal plate 2, and connects the top metal plate 1 and the bottom metal plate 2, so that both the metal via 7 and the top metal plate 1 are grounded. So that signals are transmitted between the trapezoidal and rectangular slots.
According to the millimeter wave multiple-input multiple-output antenna provided by the embodiment of the invention, the top metal plate, the bottom metal plate, the dielectric substrate and the metal through hole form the substrate integrated waveguide structure, the substrate integrated waveguide structure is a planar structure, the size of the antenna is reduced, and the planar structure is easy to integrate with other devices. Besides, metal through holes are formed in the periphery of the trapezoidal gap serving as the antenna unit, except the side opposite to the rectangular gap, the other three sides of the trapezoidal gap are provided with metal through holes, the metal through holes inhibit signals from being transmitted at other positions except the position between the trapezoidal gap and the rectangular gap, the mutual coupling phenomenon between the antennas is reduced, and the communication performance of the mobile phone is improved. The method has great advantages for being applied to mobile phone communication.
In one embodiment of the present invention, the rectangular slot 5 corresponding to each rectangular area and the metal patch 6 in the rectangular slot form a transducer.
The converter can be connected with a standard rectangular waveguide (WR-15), the propagation mode of electromagnetic waves fed into the standard rectangular waveguide converter is TE10 mode, the transmission mode of the electromagnetic waves on the metal patch is converted into TM10 mode, the transmission mode is converted into TE10 mode after the electromagnetic waves are coupled by a rectangular gap, and then signals are fed into the dielectric substrate.
The TE10 mode indicates that the maximum standing wave of the electromagnetic field of the transverse electric wave along the wide side of the waveguide is 1, the maximum standing wave of the electromagnetic field along the narrow side of the waveguide is 0, and the transverse electric wave has no electric field component but has a magnetic field component. The TM10 mode indicates that the standing wave maximum of the electromagnetic field of the transverse magnetic wave along the broad side of the waveguide is 1, and the standing wave maximum of the electromagnetic field along the narrow side of the waveguide is 0, and that the transverse magnetic wave has no magnetic field component but has an electric field component.
Illustratively, the rectangular slot 5 has dimensions of 2.6 millimeters (mm) by 1.325mm, and the metal patch 6 has dimensions of 0.6mm by 0.03 mm.
In the embodiment of the invention, when the converter is used for receiving signals, the trapezoidal gap belonging to the same branch region with the converter is used for radiating signals; when the transducer is used for transmitting signals, the trapezoidal slot belonging to the same branch area as the transducer is used for receiving signals. Also, the four converters may not operate simultaneously.
Optionally, two converters with opposite directions may be fed respectively, so that a radiation pattern of a signal radiated from a trapezoidal slot corresponding to the converter on a plane where the antenna is located may generate a symmetric effect, and maximum gain angles of the two trapezoidal slots are symmetric along a center, thereby achieving reconfigurability of a radiation direction of the antenna.
In one embodiment of the present invention, the metal vias 7 surrounding the rectangular region are arranged in a plurality of rows in a direction away from the rectangular region; the metal through holes 7 surrounding the trapezoidal region are arranged in a plurality of rows in a direction away from the trapezoidal region; the spacing between the metal vias 7 surrounding the rectangular or trapezoidal regions is smaller than the spacing between the metal vias 7 surrounding the stripe regions.
As shown in fig. 1b and 1c, each solid black circle is a metal via 7. The rectangular area is divided by the side opposite to the trapezoidal area, and the other three sides are surrounded by two rows of metal through holes 7; except for the side opposite to the rectangular area, the other three sides of the trapezoidal area are surrounded by two rows of metal through holes 7. The two long sides of the strip-shaped area between the rectangular area and the trapezoidal area are respectively surrounded by a row of metal through holes 7.
Illustratively, the metal vias 7 are of radius: 0.2 mm.
In the embodiment of the invention, the number of the metal through holes close to the rectangular gap or the trapezoidal gap is large, and the distance is small, so that the millimeter wave multi-input multi-output antenna can generate a better resonance effect, and the bandwidth of the antenna is widened.
In one embodiment of the invention, the four trapezoidal slits 4 are of the same size and the four rectangular slits 5 are of the same size.
In one embodiment of the present invention, as shown in fig. 1a, the millimeter wave multiple input multiple output antenna further comprises: a reflective cover plate 8 and spacers 9.
Wherein, the reflecting cover plate 8 is fixed above the four trapezoidal gaps 4 through the cushion columns 9. Illustratively, the material of the pad post 9 may be plastic.
It should be noted that, in fig. 1c, the reflective cover plate and the pad column are not shown in order to embody the trapezoidal slit structure, and in fact, the reflective cover plate may be disposed above the trapezoidal slit through the pad column.
In one embodiment of the invention the medium between the reflective cover plate 8 and the trapezoidal slit 4 comprises air.
Illustratively, the distance between the reflective cover plate 8 and the trapezoidal slit 4 is 5mm, i.e. the height of the air cavity is 5 mm.
In one embodiment of the invention, the material of the reflective cover sheet 8 comprises a rockwell plate material.
Illustratively, the reflective cover plate may have a model number of 6006, dimensions of 14mm by 1.905mm, and a relative dielectric constant of 6.15.
In the embodiment of the invention, the reflection cover plate is loaded above the trapezoidal gap serving as the antenna unit, one part of the electromagnetic waves radiated by the trapezoidal gap directly penetrate through the reflection cover plate to be radiated, the other part of the electromagnetic waves are reflected by the reflection cover plate, the electromagnetic waves are radiated for multiple times in the air cavity between the reflection cover plate and the trapezoidal gap and finally penetrate through the reflection cover plate, and the electromagnetic waves reflected for multiple times can realize in-phase superposition, thereby obviously improving the gain of the antenna. And the reflecting cover plate has simple structure and is easy to process.
In one embodiment of the present invention, the top metal plate 1, the bottom metal plate 2, the metal patches 6 and the metal vias 7 are made of the same material.
For example, the materials of the top metal plate 1, the bottom metal plate 2, the metal patches 6 and the metal vias 7 all comprise copper.
In one embodiment of the present invention, the integral structure of the bottom metal plate 2, the dielectric substrate 3 and the top metal plate 1 further has a plurality of insertion holes 10. The jack 10 is used for inserting a fixing component to fix the millimeter wave multiple input multiple output antenna.
For example, the hollow circle in fig. 1b and 1c is the receptacle 10.
Illustratively, the top metal sheet 1 and the bottom metal sheet 2 each have dimensions of 50mm x 0.03 mm. The dielectric substrate 3 is a Rogers plate with the model number of 5880 and the size of 50mm multiplied by 0.787 mm.
The working process of the millimeter wave multiple-input multiple-output antenna provided by the embodiment of the invention is as follows:
electromagnetic waves are fed into the converter through the standard rectangular waveguide, coupled through the rectangular gap of the converter and then fed into the dielectric substrate, radiated out through the trapezoidal gap, reflected in an air cavity between the reflective cover plate and the trapezoidal gap, and finally radiated out through the reflective cover plate.
Optionally, the impedance matching bandwidth of the millimeter wave multiple-input multiple-output antenna provided by the embodiment of the present invention is 52-73 gigahertz (GHz), and the bandwidth covers a communication frequency band of a fifth generation mobile communication technology (5th generation mobile networks, 5G), and can be used as a 5G mobile phone antenna in civil communication.
Referring to fig. 2, fig. 2 is a simulation diagram of reflection coefficients of the millimeter wave mimo antenna in the operating frequency band. Wherein the horizontal axis represents the frequency of the input signal, the vertical axis represents the reflection coefficient, and the curve with an open circle is S11The curve with a square is S22The curve with triangle is S33The curve with "x" is S44。S11Representing the reflection coefficient, S, of the first antenna element22Representing the reflection coefficient, S, of the second antenna element33Denotes the reflection coefficient, S, of the third antenna element44And the reflection coefficient of the fourth antenna unit is represented, the reflection coefficient represents whether the antenna realizes impedance matching, and the design requirement is met when the reflection coefficient is generally required to be lower than-10 dB.
Here, "first" to "fourth" are used only to distinguish different antenna elements, each of which represents one trapezoidal slot.
As can be seen from FIG. 2, four reflection coefficients of the antenna are all lower than-10 dB in the range of 52-73GHz, and the impedance matching bandwidth is 33.6%, which shows that the antenna has good broadband performance.
Referring to fig. 3, fig. 3 is a simulation diagram of transmission coefficients of the millimeter wave mimo antenna in the operating frequency band. Wherein the horizontal axis represents the frequency of the input signal, the vertical axis represents the transmission coefficient, and the curve with an open circle is S21The curve with a square is S31The curve with the positive triangle is S32The curve with "x" is S41The curve with the inverted triangle is S42The curve with pentagon is S43。S21Representing the transmission coefficient, S, between the second and first antenna elements31Representing the transmission coefficient, S, between the third and first antenna elements32Representing the transmission coefficient, S, between the third and second antenna elements41Representing the transmission coefficient, S, between the fourth and the first antenna element42Indicating a fourth antenna sheetTransmission coefficient between element and second antenna element, S43Representing the transmission coefficient between the fourth and third antenna elements. The transmission coefficient characterizes the isolation between different antenna units, and generally requires that the isolation be lower than-15 dB to meet the design requirement.
As can be seen from fig. 3, the isolation of each antenna unit is lower than-10 dB within the impedance matching bandwidth of 52-73GHz of the antenna, which satisfies the design requirement of the isolation of the antenna of the mobile phone, and indicates that the mutual coupling between the antenna units is very small, and the antenna is suitable for implementing the mimo technology.
Referring to fig. 4, fig. 4 is a simulation diagram of peak gain of the millimeter wave mimo antenna in an operating frequency band, wherein the horizontal axis represents frequency of an input signal and the vertical axis represents peak gain. As can be seen from FIG. 4, the maximum gain of the antenna can reach 12.1 dBic (isotropic circular decibel) in the range of 52-73GHz, which indicates that the antenna has high gain characteristic.
Fig. 5 a-5 d are simulation results of radiation patterns of XOZ plane and YOZ plane of different antenna element feeds of the millimeter wave mimo antenna at 60 GHz. Fig. 5a to 5d are simulation diagrams when the first trapezoidal slot and the third trapezoidal slot are fed simultaneously. FIG. 5a is a simulation result of the radiation pattern of the XOZ plane of the first trapezoidal slit; FIG. 5b is a simulation result of the radiation pattern of the YOZ plane of the first trapezoidal slit; fig. 5c is a simulation result of the radiation pattern of the XOZ plane of the third trapezoidal slit; fig. 5d shows the results of the radiation pattern simulation of the YOZ plane of the third trapezoidal slit.
When the first trapezoidal slot and the third trapezoidal slot are fed respectively, the reconfigurable characteristic of a radiation directional diagram can be realized on an XOZ surface, the maximum radiation directions of the XOZ surface are respectively-15 degrees and 15 degrees, the radiation directional diagram on a YOZ surface has symmetry, the main polarization of the two surfaces in the maximum radiation direction is 40dB greater than the cross polarization, and the similar radiation effect is realized when the second trapezoidal slot and the fourth trapezoidal slot are fed respectively. According to the simulation result of the millimeter wave multiple-input multiple-output antenna provided by the embodiment of the invention, the antenna has the characteristic of high gain in broadband, can be suitable for the realization of multiple-input multiple-output technology, and can realize the reconfigurable characteristic of an antenna radiation pattern by feeding different antenna units.
Wherein the first trapezoidal slit and the third trapezoidal slit are two opposite trapezoidal slits. The second trapezoidal slit and the fourth trapezoidal slit are two opposite trapezoidal slits.
Based on the same inventive concept, corresponding to the above embodiments, embodiments of the present invention provide a millimeter wave multiple input multiple output communication device, which includes the above millimeter wave multiple input multiple output antenna.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the communication device embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to part of the description of the method embodiment.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a millimeter wave multiple input multiple output antenna, its characterized in that, is including four branch regions that are the cross amalgamation, every branch region is regional including the trapezoidal region that is close to the cross center, keep away from the rectangular region at cross center and connect the bar region of trapezoidal region and rectangular region, and the long limit of the upper base in trapezoidal region and the rectangular region that corresponds sets up relatively, millimeter wave multiple input multiple output antenna includes: the device comprises a top metal plate (1), a grounded bottom metal plate (2) and a dielectric substrate (3) positioned between the bottom metal plate (2) and the top metal plate (1); wherein the content of the first and second substances,
the top metal plate (1) is hollowed out at the part corresponding to the four trapezoidal areas to form four trapezoidal gaps (4);
the bottom metal plate (2) is hollowed out at the parts corresponding to the four rectangular areas to form four rectangular gaps (5);
four metal patches (6) are pasted on the surface, facing the bottom layer metal plate (2), of the medium substrate (3), and the four metal patches (6) are respectively arranged in four rectangular areas;
the integral structure of the bottom layer metal plate (2), the medium substrate (3) and the top layer metal plate (1) is provided with four groups of metal through holes (7) which are respectively arranged around the edges of four branch areas.
2. The mmwave mimo antenna of claim 1 wherein the rectangular slot (5) corresponding to each rectangular area and the metal patch (6) in the rectangular slot form a transducer.
3. The millimeter wave multiple-input multiple-output antenna according to claim 1, wherein the metal vias (7) surrounding the rectangular region are arranged in a plurality of rows in a direction away from the rectangular region, and the metal vias (7) surrounding the trapezoidal region are arranged in a plurality of rows in a direction away from the trapezoidal region; the spacing between the metal through holes (7) surrounding the rectangular area or the trapezoidal area is smaller than the spacing between the metal through holes (7) surrounding the strip-shaped area.
4. The millimeter-wave multiple-input multiple-output antenna according to claim 1, wherein the four trapezoidal slots (4) are of the same size; the four rectangular gaps (5) have the same size.
5. The millimeter-wave multiple-input multiple-output antenna of claim 1, further comprising: a reflective cover plate (8) and a pad column (9);
the reflecting cover plate (8) is fixed above the four trapezoidal gaps (4) through the cushion columns (9).
6. The mmwave mimo antenna of claim 5 wherein the medium between the reflective cover plate (8) and the trapezoidal shaped slot (4) comprises air.
7. The mmwave mimo antenna of claim 5 wherein the material of the reflective cover plate (8) comprises a Rogers board material.
8. The mmwave mimo antenna of any one of claims 1-7 wherein the top metal plate (1), the bottom metal plate (2), the metal patch (6) and the metal via (7) are of the same material.
9. The mmwave mimo antenna of any one of claims 1 to 7 wherein the integral structure of the bottom metal plate (2), the dielectric substrate (3) and the top metal plate (1) further has a plurality of insertion holes (10); the jack (10) is used for inserting a fixing component to fix the millimeter wave multiple input multiple output antenna.
10. A millimeter-wave multiple-input multiple-output communication device, wherein the millimeter-wave multiple-input multiple-output communication device comprises the millimeter-wave multiple-input multiple-output antenna of any of claims 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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