CN108336490A - A kind of high isolation wideband MIMO antenna - Google Patents
A kind of high isolation wideband MIMO antenna Download PDFInfo
- Publication number
- CN108336490A CN108336490A CN201810185010.5A CN201810185010A CN108336490A CN 108336490 A CN108336490 A CN 108336490A CN 201810185010 A CN201810185010 A CN 201810185010A CN 108336490 A CN108336490 A CN 108336490A
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- China
- Prior art keywords
- patch
- medium substrate
- parasitic
- convex
- spill
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Classifications
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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
-
- 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
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of high isolation wideband MIMO antennas, including first medium substrate, second medium substrate, metal floor, four patch radiating elements and four input ports；First medium substrate is located above second medium substrate, is reserved with air layer between them；Four patch radiating elements are located at first medium substrate top surface about center rotational symmetry, each patch radiating element includes spill parasitic patch, the rectangular patch with half-wavelength, convex parasitic patch, spill parasitic patch and convex parasitic patch are coupled parallel to the opposite sides of rectangular patch respectively, metal floor is located at the top surface of second medium substrate, and it is provided with four gaps, the microstrip feed line of four input ports is the bottom surface for being located at second medium substrate, and corresponding rectangular patch is encouraged by gap.The present invention can realize good impedance matching, isolation and radiation characteristic, and not need additional decoupling arrangements, have many advantages, such as that low section, cross polarization are low, at low cost.
Description
Technical field
The present invention relates to the technical fields of antenna, refer in particular to a kind of high isolation wideband MIMO antenna.
Background technology
Mimo system, i.e. multi-input multi-output system, by the way that more transmittings and reception antenna is arranged, using specific number
According to processing, the increase that message capacity can be at double, to meet now growing communication service demand.Existing major part
In mimo system, mimo antenna is all largely design about narrow-band antenna unit, and the isolation between antenna element can only be
Meet in a very narrow band frequency.And in order to reduce the mutual coupling between antenna element, it usually needs additional decoupling knot is added
The distance between structure or increasing antenna element.Additional decoupling arrangements would generally introduce the deterioration of unnecessary radiance,
And with the development trend of present electronics miniaturization, the decoupling mode of distance is also undesirable between increase antenna element
's.
The prior art is investigated, it is specific as follows：
2016, Hongye Qi et al. were above sent out at " IEEE ANTENNAS WIRELESS PROPAGATION LETTER "
Table title is " " Improving isolation between closely spaced patch antennas using
Interdigital lines " are tied by the way that closed stub is added between two rectangular patches to introduce a band resistance in literary
Structure, to reduce the mutual coupling between two antenna elements.By using three closed stubs, the mimo antenna in text realizes
Isolation more than 20dB.However due to the presence of the heavy current on decoupling arrangements, the reflectance factor and antenna pattern of antenna
All receive different degrees of deterioration.
2017, Seahee Hwangbo et al. existed " IEEE ANTENNAS WIRELESS PROPAGATION
LETTER " on deliver entitled " Mutual Coupling Reduction Using Micromachined Complementary
Meander-Line Slots for a Patch Array Antenna ", it is multiple symmetrical curved by being dug on floor in literary
The line of rabbet joint is rolled over to reduce the mutual coupling between antenna element.The line of rabbet joint on floor plays a selective effect with resistance, increases
Isolation between antenna element, but these line of rabbet joint can introduce unnecessary reflection zero in reflectance factor.It is tested in text
Antenna pattern also receive a degree of influence.
Generally speaking, in existing work, there is the research much about mimo antenna, but it is most of be all pay attention to it is narrow
The design of the antenna element of band, and generally for enhancing isolation, need to use additional decoupling arrangements.Designing a has
The good mimo antenna of wide impedance bandwidth and radiation characteristic is of great significance.
Invention content
It is an object of the invention to overcome the deficiencies in the prior art, it is proposed that a kind of compact-sized high isolation wideband MIMO
Antenna can realize good impedance matching, isolation and radiation characteristic, and not need additional decoupling arrangements, have and set
The advantages that counting flexible, low section, cross polarization low, at low cost.
To achieve the above object, technical solution provided by the present invention is：A kind of high isolation wideband MIMO antenna includes
First medium substrate, second medium substrate, metal floor, four identical patch radiating elements and single with four patches radiation
One-to-one four input ports of member；The first medium substrate is located above second medium substrate, and is reserved between them
There is air layer；Four patch radiating elements are arranged about center rotational symmetry in the top surface of first medium substrate, and adjacent
Two patch radiating elements are mutually perpendicular to, and each patch radiating element includes spill parasitic patch, the square with half-wavelength
Shape patch, convex parasitic patch, the spill parasitic patch and convex parasitic patch are coupled parallel to the phase of rectangular patch respectively
To both sides, to obtain broadband character, and the convex parasitic patch is raised towards the groove position of spill parasitic patch；The gold
Possession plate is arranged in the top surface of second medium substrate, and is provided with four and four one-to-one gaps of patch radiating element, institute
The microstrip feed line for stating four input ports is provided in the bottom surface of second medium substrate, by four gaps on metal floor come
Encourage the rectangular patch of corresponding patch radiating element.
The resonant frequency of the spill parasitic patch is less than rectangular patch, and the resonant frequency of the convex parasitic patch is higher than
Rectangular patch.
The impedance matching that the input port is 50 ohm.
Compared with prior art, the present invention having the following advantages that and advantageous effect：
1, due to wide element used, maximum current position is different at different resonant frequencies, and the mimo antenna is without extra
Decoupling arrangements can be achieved with higher isolation.
2, due to there is no that additional decoupling arrangements, the directional diagram of the mimo antenna is used to realize good side and penetrate characteristic,
And the matching of passband internal impedance is good.
3, high isolation wideband MIMO antenna structure simple and compact of the invention, processing is simple, and light-weight, processing cost is low,
With good application prospect.
Description of the drawings
Fig. 1 is the stereogram of the high isolation wideband MIMO antenna of the present invention.
Fig. 2 is the vertical view of the high isolation wideband MIMO antenna of the present invention.
Fig. 3 is the simulation result of the reflectance factor and isolation of the high isolation wideband MIMO antenna of the present invention.
Fig. 4 is normalization antenna pattern of the high isolation wideband MIMO antenna of the present invention at working passband centre frequency
(faces H and the faces E) simulation result.
Specific implementation mode
With reference to specific embodiment, the present invention is described further.
Shown in referring to Fig. 1 and Fig. 2, the high isolation wideband MIMO antenna that the present embodiment is provided, includes first medium base
Plate 1, second medium substrate 2,3, four identical patch radiating elements 4 of metal floor and with four patch radiating elements 4 one
One corresponding four input ports；The first medium substrate 1 is located at 2 top of second medium substrate, and is reserved between them
Air layer 5；Four patch radiating elements 4 are arranged in the top surface of first medium substrate 1 about center rotational symmetry to obtain
Enough isolations, and be mutually perpendicular between two neighboring patch radiating element 4, each patch radiating element 4 includes recessed
Shape parasitic patch 401, the rectangular patch 402 with half-wavelength, convex parasitic patch 403, the spill parasitic patch 401 and convex
Shape parasitic patch 403 is coupled parallel to the opposite sides of rectangular patch 402 respectively, and to obtain broadband character, and the convex is posted
Give birth to the raised towards the groove position of spill parasitic patch 401 of patch 403；The metal floor 3 is arranged in second medium substrate 2
Top surface, and be provided on the metal floor 3 and four patch radiating elements, 4 one-to-one four gaps 31, four inputs
The microstrip feed line 6 of port is provided in the bottom surface of second medium substrate 2, is encouraged by four gaps 31 on metal floor 3
The rectangular patch 402 of corresponding patch radiating element 4.Wherein, four input ports are 50 ohm of impedance matching, first medium
The dielectric constant of substrate 1 and second medium substrate 2 is 2.55, loss angle tangent 0.0029, and thickness is 0.8 millimeter；Often
The distance between two patch radiating elements 4 are 0.09 λ0, wherein λ0Free space wavelength；The thickness of design air layer 5 is 1 milli
Rice.
It is shown in Figure 3, it is shown that the reflectance factor of the above-mentioned high isolation wideband MIMO antenna of the present embodiment and isolation
Simulation result.From the figure, it can be seen that antenna is realized in passband between good impedance matching and patch radiating element
Isolation S31 and S21 be all higher than 20dB.All there are multiple transmission zeros on isolation curve S31 and S21, this subtracts significantly
Mutual coupling between small patch radiating element.
It is shown in Figure 4, it is shown that the above-mentioned high isolation wideband MIMO antenna of the present embodiment in the pass-band at frequency of heart the faces E and
The normalization antenna pattern simulation result in the faces H.From the figure, it can be seen that the antenna realized in the faces E and the faces H it is good fixed
To radiation characteristic, and side penetrates the cross polarization in direction and is below -30dBi.Therefore, before inventive antenna has application well
Scape is worthy to be popularized.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
Change made by all shapes according to the present invention, principle, should all cover within the scope of the present invention.
Claims (3)
1. a kind of high isolation wideband MIMO antenna, it is characterised in that：Include first medium substrate, second medium substrate, metal
Floor, four identical patch radiating elements and with one-to-one four input ports of four patch radiating elements；It is described
First medium substrate is located above second medium substrate, and air layer is reserved between them；Four patch radiating elements
It is arranged in the top surface of first medium substrate about center rotational symmetry, and two neighboring patch radiating element is mutually perpendicular to, each
Patch radiating element includes spill parasitic patch, the rectangular patch with half-wavelength, convex parasitic patch, and the spill is posted
Raw patch and convex parasitic patch are coupled parallel to the opposite sides of rectangular patch respectively, to obtain broadband character, and it is described convex
The protrusion of shape parasitic patch is towards the groove position of spill parasitic patch；The metal floor is arranged on the top of second medium substrate
Face, and four and four one-to-one gaps of patch radiating element are provided with, the microstrip feed line of four input ports is to set
It sets in the bottom surface of second medium substrate, encourages the rectangle of corresponding patch radiating element to paste by four gaps on metal floor
Piece.
2. a kind of high isolation wideband MIMO antenna according to claim 1, it is characterised in that：The spill parasitic patch
Resonant frequency is less than rectangular patch, and the resonant frequency of the convex parasitic patch is higher than rectangular patch.
3. a kind of high isolation wideband MIMO antenna according to claim 1, it is characterised in that：The input port is 50 Europe
The impedance matching of nurse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185010.5A CN108336490B (en) | 2018-03-07 | 2018-03-07 | High-isolation broadband MIMO antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185010.5A CN108336490B (en) | 2018-03-07 | 2018-03-07 | High-isolation broadband MIMO antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108336490A true CN108336490A (en) | 2018-07-27 |
| CN108336490B CN108336490B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810185010.5A Active CN108336490B (en) | 2018-03-07 | 2018-03-07 | High-isolation broadband MIMO antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109755743A (en) * | 2019-03-11 | 2019-05-14 | 青岛海信移动通信技术股份有限公司 | antenna and terminal |
| CN110429384A (en) * | 2019-07-30 | 2019-11-08 | 哈尔滨工业大学 | A kind of polarity diversity dielectric resonator antenna |
| CN110828998A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | Dual-frequency four-unit millimeter wave microstrip slot MIMO antenna |
| CN110838619A (en) * | 2019-11-19 | 2020-02-25 | 榆林学院 | Dual-frequency two-unit MIMO antenna based on discrete triangular parasitic structure |
| CN110970719A (en) * | 2018-09-28 | 2020-04-07 | 中兴通讯股份有限公司 | Microstrip MIMO antenna structure and mobile terminal thereof |
| CN111710971A (en) * | 2020-07-01 | 2020-09-25 | 福建省汇创新高电子科技有限公司 | High-gain MIMO antenna applied to 5G communication and terminal thereof |
| CN113346238A (en) * | 2021-04-27 | 2021-09-03 | 荣耀终端有限公司 | Antenna module and electronic equipment |
| CN113644425A (en) * | 2021-07-12 | 2021-11-12 | 南京鲲瑜信息科技有限公司 | Wide-bandwidth beam antenna for short-distance vehicle-mounted radar |
| CN115441210A (en) * | 2022-08-29 | 2022-12-06 | 西安电子科技大学 | Self-decoupling circularly polarized filter antenna array |
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| CN104600432A (en) * | 2014-12-30 | 2015-05-06 | 北京理工雷科电子信息技术有限公司 | Small wide-beam microstrip antenna |
| CN107230840A (en) * | 2017-06-26 | 2017-10-03 | 广东通宇通讯股份有限公司 | High-gain broadband micro-strip paster antenna |
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| CN104600432A (en) * | 2014-12-30 | 2015-05-06 | 北京理工雷科电子信息技术有限公司 | Small wide-beam microstrip antenna |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970719A (en) * | 2018-09-28 | 2020-04-07 | 中兴通讯股份有限公司 | Microstrip MIMO antenna structure and mobile terminal thereof |
| CN109755743A (en) * | 2019-03-11 | 2019-05-14 | 青岛海信移动通信技术股份有限公司 | antenna and terminal |
| CN110429384A (en) * | 2019-07-30 | 2019-11-08 | 哈尔滨工业大学 | A kind of polarity diversity dielectric resonator antenna |
| CN110828998A (en) * | 2019-11-19 | 2020-02-21 | 榆林学院 | Dual-frequency four-unit millimeter wave microstrip slot MIMO antenna |
| CN110838619A (en) * | 2019-11-19 | 2020-02-25 | 榆林学院 | Dual-frequency two-unit MIMO antenna based on discrete triangular parasitic structure |
| CN111710971A (en) * | 2020-07-01 | 2020-09-25 | 福建省汇创新高电子科技有限公司 | High-gain MIMO antenna applied to 5G communication and terminal thereof |
| CN113346238A (en) * | 2021-04-27 | 2021-09-03 | 荣耀终端有限公司 | Antenna module and electronic equipment |
| CN113346238B (en) * | 2021-04-27 | 2022-06-24 | 荣耀终端有限公司 | Antenna module and electronic equipment |
| CN113644425A (en) * | 2021-07-12 | 2021-11-12 | 南京鲲瑜信息科技有限公司 | Wide-bandwidth beam antenna for short-distance vehicle-mounted radar |
| CN115441210A (en) * | 2022-08-29 | 2022-12-06 | 西安电子科技大学 | Self-decoupling circularly polarized filter antenna array |
| CN115441210B (en) * | 2022-08-29 | 2023-07-25 | 西安电子科技大学 | Self-decoupling circularly polarized filter antenna array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108336490B (en) | 2023-08-22 |
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