CN108428998A - Millimeter wave dielectric resonator MIMO antenna applied to 5G mobile communication - Google Patents
Millimeter wave dielectric resonator MIMO antenna applied to 5G mobile communication Download PDFInfo
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- CN108428998A CN108428998A CN201810095373.XA CN201810095373A CN108428998A CN 108428998 A CN108428998 A CN 108428998A CN 201810095373 A CN201810095373 A CN 201810095373A CN 108428998 A CN108428998 A CN 108428998A
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- antenna
- dielectric resonator
- millimeter wave
- mobile communication
- antenna element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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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Abstract
The engineering device technique field combined the invention belongs to antenna parts or with antenna discloses a kind of millimeter wave dielectric resonator mimo antenna applied to 5G mobile communication, including：Irradiation structure, feed structure, decoupling arrangements and medium substrate.For the antenna element of the present invention by microstrip gap couple feed, decoupling arrangements are the metal band that antenna element upper surface is etched in by PCB technology.The decoupling arrangements of the present invention can improve isolation by upsetting the displacement current that an antenna element comes from the coupling of another antenna element, the presence of decoupling arrangements can't significantly affect the impedance matching of antenna script, will not occupy the space between two antenna elements.The present invention upsets antenna element and couples the displacement current to come from another antenna element, the isolation between two-port is improved in the case where additionally not occupying design space by introducing PCB metal bands.
Description
Technical field
The engineering device technique field combined the invention belongs to antenna parts or with antenna, more particularly to a kind of 5G that is applied to are moved
The millimeter wave dielectric resonator mimo antenna of dynamic communication.
Background technology
Currently, the prior art commonly used in the trade is such：Growing and 4G technologies with communication network pushes away
Wide application, mobile subscriber are more strong for the demand of faster message transmission rate.With the rise of Internet of Things, future will
There is huge number of terminal accessing mobile communication network, needs sufficient frequency spectrum resource as support.Traditional is less than 6GHz's
Frequency resource has been petered out, and people focus on sight not to be widely deployed naturally utilizes millimeter wave frequency band.Compared to work
The antenna for making in microwave frequency band, the antenna for working in millimeter wave frequency band possess smaller physical size, are more prone to be integrated into end
It holds in limited space.In the case of bandwidth of operation and constant transmission power, using multiple-input and multiple-output (Multiple
Input Multiple Output, MIMO) system, compared to traditional single-input single-output (Single Input Single
Output, SISO) system, the channel capacity of communication system can greatly improve.Under the trend that terminal increasingly minimizes, leave for
The design space of antenna is also smaller and smaller.Will produce when two antenna close proximities it is very strong be mutually coupled phenomenon, limited
The good mimo antenna of isolation is designed in design space becomes a major challenge of Antenna Design.In order to solve mobile terminal
The problem of mimo antenna isolation difference, it is the spacing increased between antenna element that industry, which uses most common way, or two
Increase decoupling arrangements between antenna element, such as makes isolation strip.Both methods is required for occupying larger design space, past
Too big space can not possibly be reserved to Antenna Design toward increasingly compacter layout.
In conclusion problem of the existing technology is：Under the trend of mobile terminal miniaturization, the distance between antenna
It is smaller and smaller so that the isolation of mimo antenna becomes very poor.And the decoupling method that industry generally uses is increase antenna element
The distance between, or adding isolation structure between antenna element, both methods both increases the design space of antenna, is not inconsistent
Close the trend of terminal miniaturization.
Solve the difficulty and meaning of above-mentioned technical problem：In the case where other conditions are constant, between mimo antenna away from
From smaller, then its isolation just becomes poorer.Therefore, the difficulty for solving above-mentioned technical problem is, how at two MIMO days
Line close proximity and in the case of constant, increases the isolation between mimo antenna.Solve the meaning of above-mentioned technical problem
It is, the distance between not increasing mimo antenna improves the isolation of antenna, can reduce the design of antenna occupancy
Space, and the diversity gain of mimo antenna can be improved, to improve the channel capacity of communication system.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of millimeter wave dielectric applied to 5G mobile communication is humorous
It shakes device mimo antenna.
The invention is realized in this way a kind of millimeter wave dielectric resonator mimo antenna applied to 5G mobile communication, institute
It states and is provided with applied to the millimeter wave dielectric resonator mimo antenna of 5G mobile communication：
Medium substrate；
The medium substrate lower layer is feed structure, and feed structure uses characteristic impedance for 50 ohm of microstrip line, work(
Can be the gap feeding RF signals from feed port on metal floor；
The upper layer of the medium substrate is metal floor, and the metal floor is opened there are two about the symmetrical gap of X-axis,
Function is the Rectangular Enclosure with Participating Media resonator encouraged by microstrip gap couple feed right over it；
The upper layer of the metal floor is irradiation structure, and irradiation structure is identical using two, about the symmetrical rectangle of X-axis
Dielectric resonator, function are to free space electromagnetic radiation signal；
The upper layer of the irradiation structure is decoupling arrangements, and decoupling arrangements use the metal band etched by PCB technology, two
Metal band is etched in two dielectric resonator upper surfaces as irradiation structure respectively, and function is：By upsetting one
Antenna element couples the displacement current to come from another antenna element, and two are improved in the case where additionally not occupying design space
Isolation between port.
In conclusion advantages of the present invention and good effect are：In the performance parameter for not significantly affecting an antenna element
Under, by introducing PCB metal bands, upsets the antenna element and couple the displacement current to come from another antenna element, not
The isolation between two-port is improved in the case of additional occupancy design space.As shown in figure 3, not decoupling the isolation of antenna most
Low only -16dB or so, and by introducing metal band, isolation between antennas after decoupling is minimum to reach -24dB or so, isolation
Improve about 8dB.
Description of the drawings
Fig. 1 is the millimeter wave dielectric resonator mimo antenna structure provided in an embodiment of the present invention applied to 5G mobile communication
Schematic diagram；
In figure：1, the first Rectangular Enclosure with Participating Media resonator；2, the second Rectangular Enclosure with Participating Media resonator；3, medium substrate；4, the first micro-strip
Line；5, the second microstrip line；6, the first feed port；7, the second feed port；8, metal floor；9, the first gap；10, the second seam
Gap；11, the first metal band；12, the second metal band.
Fig. 2 is reflectance factor characteristic curve schematic diagram provided in an embodiment of the present invention.
Fig. 3 be the embodiment of the present invention and do not decouple antenna offer be operated in 28GHz frequency ranges (27.50GHz-
Isolation characteristic curve contrast schematic diagram under 28.35GHz).
Fig. 4 is the faces the XOY normalization radiation direction schematic diagram provided in an embodiment of the present invention for being operated in 28GHz frequency points.
Fig. 5 is the faces the XOZ normalization radiation direction schematic diagram provided in an embodiment of the present invention for being operated in 28GHz frequency points.
Fig. 6 is the faces the YOZ normalization radiation direction schematic diagram provided in an embodiment of the present invention for being operated in 28GHz frequency points.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Millimeter wave dielectric resonator mimo antenna provided in an embodiment of the present invention applied to 5G mobile communication includes radiation
Structure, feed structure, decoupling arrangements and medium substrate；Irradiation structure uses two Rectangular Enclosure with Participating Media resonators；Feed structure uses
Two-port netwerk microstrip gap couple feed；Decoupling arrangements are using the metal band for being etched in Rectangular Enclosure with Participating Media resonator upper surface, metal
The long side of band is parallel to the long side of Rectangular Enclosure with Participating Media resonator, and deviates at a certain distance in the geometry of Rectangular Enclosure with Participating Media resonator
The heart.
As shown in Figure 1, the millimeter wave dielectric resonator provided in an embodiment of the present invention applied to 5G mobile communication MIMO days
Line includes：Irradiation structure, feed structure, decoupling arrangements and medium substrate 3；Positioned at 3 lower layer of medium substrate to be feed structure be
Two are mirrored into symmetrical first microstrip line 4, the second microstrip line 5, and the first feed port 6, the second feed port 7 are located at medium
The both sides of substrate 3；What it is positioned at 3 upper layer of medium substrate is metal floor 8, is opened on metal floor 8 symmetrical there are two being mirrored into
First gap 9, the second gap 10.Positioned at 8 upper layer of metal floor be as irradiation structure the first Rectangular Enclosure with Participating Media resonator 1,
Second Rectangular Enclosure with Participating Media resonator 2, the first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2 be located at the first gap 9,
The surface in the second gap 10.What it is positioned at the upper surface of the first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2 is to make
For decoupling arrangements the first metal band 11, the second metal band 12, the first metal band 11, the second metal band 12 pass through PCB
Technique is etched in the upper surface of the first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2 respectively, the first metal band 11,
The long side of second metal band 12 is parallel to the long side of the first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2, and with
Certain distance deviates the geometric center of the first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2.
Medium substrate 3 uses relative dielectric constant for 2.2 5880 material of Rogers in the present invention, and loss tangent is only
0.0009, substrate thickness 0.254mm, length and width is 20mm.The first microstrip line 4, the second microstrip line 5 for feed
Characteristic impedance be 50 Ω, width in present example is 0.7mm.First gap 9, the second gap 10 length be
2.7mm, width are 0.6mm；Wherein top edge 4.7mm of the top edge in the first gap 9 apart from metal floor 8, left hand edge
Left hand edge 4.25mm apart from metal floor 8, the second gap 10 and the first gap 9 are about X-axis mirror symmetry.Positioned at the first gap
9, the first Rectangular Enclosure with Participating Media resonator 1 of 10 surface of the second gap, the length of the second Rectangular Enclosure with Participating Media resonator 2 are 9.5mm, wide
Degree is 7.5mm, is highly 2.5mm, and the first Rectangular Enclosure with Participating Media resonator 1,2 bottom surface of the second Rectangular Enclosure with Participating Media resonator is several
What center is overlapped with the geometric center in the first gap 9, the second gap 10 respectively, between two Rectangular Enclosure with Participating Media resonator adjacent surfaces away from
From only 1.3mm.The first metal band 11, the second metal band 12 as decoupling arrangements are etched in respectively by PCB technology
The upper surface of first Rectangular Enclosure with Participating Media resonator 1, the second Rectangular Enclosure with Participating Media resonator 2, length are 7.5mm, and width is 1.2mm；
The long side of wherein the first metal band 11 is parallel to the long side of the first Rectangular Enclosure with Participating Media resonator 1, and its geometric center distance first
The geometric center 2.5mm of 1 upper surface of Rectangular Enclosure with Participating Media resonator, the second metal band 12 and the first metal band 11 are about X-axis mirror
As symmetrical.
Fig. 2, Fig. 3 are respectively the reflectance factor and isolation characteristic curve schematic diagram of the specific embodiment of the invention.It can from Fig. 2
To find out, the working band (reflectance factor is less than -10dB) of the specific embodiment of the invention is 27.15GHz-28.59GHz, work
Bandwidth is 1.44GHz, the working band (27.50GHz-28.35GHz) of covering 5G communication millimere-wave bands.From figure 3, it can be seen that
The isolation of specific embodiment of the invention two-port in working frequency range is better than -24dB, optimal reachable -28dB, good port
Isolation can communicate the diversity gain for providing bigger for MIMO.
Fig. 4, Fig. 5, Fig. 6 are respectively the normalized radiation pattern in the face XOY, XOZ, YOZ of the specific embodiment of the invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (5)
1. a kind of millimeter wave dielectric resonator mimo antenna applied to 5G mobile communication, which is characterized in that described to be applied to 5G
The millimeter wave dielectric resonator mimo antenna of mobile communication is provided with：
Medium substrate；
The medium substrate lower layer is feed structure；The upper layer of the medium substrate is metal floor；
The upper layer of the metal floor is irradiation structure；
Two metal bands of decoupling arrangements are etched in the dielectric resonator upper table for being used as irradiation structure by PCB technology respectively
Face.
2. being applied to the millimeter wave dielectric resonator mimo antenna of 5G mobile communication as described in claim 1, which is characterized in that
The medium substrate lower layer is microstrip line for feed, and the medium substrate upper layer is metal floor.
3. being applied to the millimeter wave dielectric resonator mimo antenna of 5G mobile communication as claimed in claim 2, which is characterized in that
The gap of two mirror symmetries is provided on the metal floor, two identical dielectric resonators are being located at two gaps just
Top, two metal bands as decoupling arrangements are etched in the upper surface of two dielectric resonators by PCB technology respectively.
4. being applied to the millimeter wave dielectric resonator mimo antenna of 5G mobile communication as claimed in claim 2, which is characterized in that
For the microstrip line of feed, characteristic impedance is 50 ohm.
5. being applied to the millimeter wave dielectric resonator mimo antenna of 5G mobile communication as claimed in claim 2, which is characterized in that
Two metal bands as decoupling arrangements are etched in the upper table of two medium resonator antenna units by PCB technology respectively
Face, apart 2.5 millimeters of the geometric center of geometric center and dielectric resonator upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095373.XA CN108428998B (en) | 2018-01-31 | 2018-01-31 | Millimeter wave dielectric resonator MIMO antenna applied to 5G mobile communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810095373.XA CN108428998B (en) | 2018-01-31 | 2018-01-31 | Millimeter wave dielectric resonator MIMO antenna applied to 5G mobile communication |
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| CN108428998A true CN108428998A (en) | 2018-08-21 |
| CN108428998B CN108428998B (en) | 2019-12-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057236A1 (en) * | 2018-09-20 | 2020-03-26 | 中兴通讯股份有限公司 | Terminal |
| CN111541025A (en) * | 2020-04-10 | 2020-08-14 | 华南理工大学 | Circularly polarized multi-input multi-output dielectric resonator antenna |
| CN112054295A (en) * | 2020-08-03 | 2020-12-08 | 中山大学 | Compact self-decoupling twelve-unit multi-input multi-output antenna applied to 5G |
| CN112768936A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
| CN112768920A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Millimeter wave antenna system based on asymmetric coplanar decoupling structure |
| CN113381185A (en) * | 2021-05-17 | 2021-09-10 | 南京航空航天大学 | 5G mobile terminal MIMO antenna based on chip integrated module |
| CN116613526A (en) * | 2023-04-07 | 2023-08-18 | 华南理工大学 | MIMO DRA array and self-decoupling method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020057236A1 (en) * | 2018-09-20 | 2020-03-26 | 中兴通讯股份有限公司 | Terminal |
| CN111541025A (en) * | 2020-04-10 | 2020-08-14 | 华南理工大学 | Circularly polarized multi-input multi-output dielectric resonator antenna |
| CN112054295A (en) * | 2020-08-03 | 2020-12-08 | 中山大学 | Compact self-decoupling twelve-unit multi-input multi-output antenna applied to 5G |
| CN112768936A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
| CN112768920A (en) * | 2020-12-30 | 2021-05-07 | 深圳市信丰伟业科技有限公司 | Millimeter wave antenna system based on asymmetric coplanar decoupling structure |
| CN112768936B (en) * | 2020-12-30 | 2024-03-29 | 深圳市信丰伟业科技有限公司 | Discrete 5G antenna isolation system |
| CN113381185A (en) * | 2021-05-17 | 2021-09-10 | 南京航空航天大学 | 5G mobile terminal MIMO antenna based on chip integrated module |
| CN116613526A (en) * | 2023-04-07 | 2023-08-18 | 华南理工大学 | MIMO DRA array and self-decoupling method thereof |
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| CN108428998B (en) | 2019-12-06 |
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