CN110061354A - A kind of mimo antenna system - Google Patents
A kind of mimo antenna system Download PDFInfo
- Publication number
- CN110061354A CN110061354A CN201910328274.6A CN201910328274A CN110061354A CN 110061354 A CN110061354 A CN 110061354A CN 201910328274 A CN201910328274 A CN 201910328274A CN 110061354 A CN110061354 A CN 110061354A
- Authority
- CN
- China
- Prior art keywords
- layer
- antenna
- antenna system
- mimo antenna
- medium plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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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- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of mimo antenna systems, the system includes first layer radiating element, second layer medium plate unit and third layer ground plane unit, the first layer radiating element is printed on second layer medium plate unit front, the third layer ground plane unit is printed on the second layer medium plate unit back side, and the first layer radiating element includes antenna primary radiation piece and parasitic antenna.By using the present invention, being mutually coupled between mimo system antenna can be reduced, to promote the isolation of mimo antenna system.The present invention can be widely used in antenna technical field.
Description
Technical field
The present invention relates to antenna technical field more particularly to a kind of mimo antenna systems.
Background technique
5G communication uses large-scale multiple-input and multiple-output (MIMO) technology, significantly improves the performance of wireless communication.?
In mimo system, antenna plays an important role, but intercoupling between the antenna in mimo system, not only influences antenna
Efficiency, and influence signal correlation.The prior art mainly passes through increase slow-wave structure, reduces the wavelength of signal, from
And increase the interval between antenna element, or protrude the T shape short column on ground level to improve the phase mutual coupling between antenna element
It closes.This method to intercouple that reduced using certain Structure Creating reverse coupled has certain limitation or isolation
Frequency band is relatively narrow or improves limited.
Summary of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of mimo antenna system, MIMO system can be reduced
Intercoupling between antenna in system.
The technical scheme adopted by the invention is that: a kind of mimo antenna system, including first layer radiating element, the second layer are situated between
Scutum unit and third layer ground plane unit, the first layer radiating element is printed on second layer medium plate unit front, described
Third layer ground plane unit is printed on the second layer medium plate unit back side, and the first layer radiating element includes antenna primary radiation piece
And parasitic antenna.
Further, gap is equipped between the antenna primary radiation piece and parasitic antenna.
Further, the parasitic antenna is in rectangular patch.
Further, the antenna primary radiation on piece is etched with the first rectangular slot.
Further, the front of the second layer medium plate unit is also printed with feeder line.
Further, the feeder line first port is connect with antenna primary radiation piece, and the feeder line second port and periphery are received and dispatched
Circuit connection.
Further, position corresponding to feeder line is etched with the second rectangular slot on the third layer ground plane unit.
Further, isolation element is equipped on the third layer ground plane unit between the position corresponding to two feeder lines.
Further, the isolation element uses the complementary open-loop resonator etched in third layer ground plane unit.
Further, the second layer medium plate unit uses Arlon-TC350 substrate.
The method of the present invention, the beneficial effect of apparatus and system are: the present invention couples primary radiation list by introducing parasitic antenna
Member is isolated to reduce intercoupling between main radiating element, and by increasing between main radiating element in the energy of member
Part further decreases intercoupling between main radiating element, to greatly improve the isolation between mimo system.
Detailed description of the invention
Fig. 1 is the front elevation of the specific embodiment of the invention；
Fig. 2 is the back view of the specific embodiment of the invention；
Fig. 3 is the experimental data figure that isolation changes with frequency variation in the specific embodiment of the invention；
Appended drawing reference: 1, second layer medium plate unit；2, parasitic antenna；3, antenna primary radiation piece；4, feeder line；5, third layer
Ground plane unit；6, complementary open-loop resonator.
Specific embodiment
The present invention provides a kind of mimo antenna systems, including first layer radiating element, second layer medium plate unit 1 and
Three layers of ground plane unit 5, the first layer radiating element are printed on 1 front of second layer medium plate unit, the third layer ground connection
Face unit 5 is printed on 1 back side of second layer medium plate unit, and the first layer radiating element includes antenna primary radiation piece 3 and parasitism
Element 2.
Wherein, the antenna primary radiation piece 3, parasitic antenna 2 and third layer ground plane unit 5 can be and be printed on second
The positive metallic paint of layer medium plate unit 1, is also possible to the metal patch being pasted on second layer medium plate unit 1, parasitic
The introducing of element 2 creates reverse coupled by double coupling path parasitism elements and is intercoupled with reducing.
It is further used as preferred embodiment, gap is equipped between the antenna primary radiation piece 3 and parasitic antenna 2.
Wherein, parasitic antenna 2 reduces the coupling between main radiating element by coupling the energy of main radiating element, parasitic
Element 2 is fed generally by electromagnetic coupling, the application of parasitic antenna 2, can not only spread frequency band, but also can reduce radiating element
Between coupling.
It is further used as preferred embodiment, the parasitic antenna 2 is in rectangular patch.
Wherein, according to the difference of radiating element shape, parasitic antenna 2 is readily modified as different shapes, such as annular shape.
It is further used as preferred embodiment, is etched with the first rectangular slot on the antenna primary radiation piece 3.
Wherein, the first rectangular slot is used to adjust the resonance frequency of antenna, and the size of first rectangular slot can basis
The resonance frequency of antenna is adjusted.
It is further used as preferred embodiment, is also printed with feeder line 4 on the second layer medium plate unit 1.
Wherein, the feeder line 4, which can be, is printed on the positive metallic paint of second layer medium plate unit 1, and feeder line 4 is for passing
Defeated signal, enables the antenna to receiving and transmitting signal.
It is further used as preferred embodiment, 4 first port of feeder line is connect with antenna primary radiation piece 3, the feeder line 4
Two-port netwerk is connect with peripheral transmission circuit.
Wherein, the signal that transmit circuit issues can be transmitted to the input terminal of antenna by the feeder line 4, or antenna is received
Signal be transmitted to receive circuit input terminal, reach signal transmission function, to enable the antenna to receiving and transmitting signal.
It is further used as preferred embodiment, position corresponding to feeder line 4 is etched on the third layer ground plane unit 5
Two rectangular slots.
Wherein, the second rectangular slot is used to improve the impedance matching of antenna itself, when circuit realizes impedance matching, circuit
Maximum power transmission is obtained, when circuit impedance mismatch, not only cannot get maximum power transfer, it is also possible to which circuit is generated
Damage, in order to make signal and Energy Efficient Transmission, it is necessary to make circuit work in the state of impedance matching, connect when being not carried out matching
It connects, the effective power capacity of feeder line 4 reduces, or even damages transmitting equipment.
Be further used as preferred embodiment, on the third layer ground plane unit 5 position corresponding to two feeder lines 4 it
Between be equipped with isolation element.
Wherein, isolation element is propagated by disable signal, being mutually coupled between radiating element is further decreased, to change
The isolation of kind mimo antenna system, the isolation element can be open-loop resonator SRR, complementary open-loop resonator 6 etc. in day
Line be mutually coupled in inhibited isolation element.
It is further used as preferred embodiment, the isolation element is used and opened in the complementation that third layer ground plane unit 5 etches
Ring resonator 6.
Wherein, complementary open-loop resonator 6 is a kind of by etching circular opening slot on conductor, generates negative dielectric with this
The structure of constant acts on a similar electric dipole for inhibiting being mutually coupled between antenna, can be by foreign current
Stimulation, in mimo systems using complementary open-loop resonator 6, magnetic conductivity is negative, and can be propagated with disable signal, so as to improve
The isolation of mimo system.
It is further used as preferred embodiment, the second layer medium plate unit 1 uses Arlon-TC350 substrate.
Wherein, second layer medium plate unit 1 can change the different substrate of dielectric constant into according to demand.
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
Referring to Figures 1 and 2, a kind of mimo system, including antenna primary radiation piece 3, parasitic antenna 2, feeder line 4, the second layer are situated between
Scutum unit 1, third layer ground plane unit 5 and complementary open-loop resonator 6, medium plate unit use Arlon-TC350 substrate, are situated between
Electric constant is 3.5, and with a thickness of 1mm, antenna primary radiation piece 3, parasitic antenna 2 and feeder line 4 are all the gold for being printed on the substrate front side
Belong to coating, ground plane unit is printed on the back side of the substrate, wherein the circular elements shape that antenna primary radiation piece 3 is 6mm by radius
At, and rectangular slot (2mm × 1mm) is etched on the rectangular aperture of the circular elements, and to align the resonance frequency of antenna, feedback
4 width of line is 1.5mm, and length 16.6mm, resistance value is 50 Ω, and for powering and transmitting signal, parasitic antenna 2 is in rectangular sheet
Shape has certain interval with antenna primary radiation piece 3, rectangular slot is lost on the ground plane under each feeder line 4, for improving day
The impedance matching of line itself is put down on ground plane and etches complementary open-loop resonator 6, propagates for isolation signals, so as to improve
The isolation of mimo system.
Referring to Fig. 3, wherein abscissa is frequency, and ordinate is isolation, and dotted line is the mimo antenna of this specific embodiment
The isolation numerical value figure of system, straight line are the isolations only with the mimo antenna system of complementary 6 isolation element of open-loop resonator
Numerical value figure, thus, this specific embodiment and the mimo antenna system phase only with complementary 6 isolation element of open-loop resonator
Than promoting isolation 5dB, significantly improving the isolation of mimo antenna system.
Obtained by above-mentioned, antenna system of the invention advantageously: introduce parasitic antenna 2 couple primary radiation list
Member makes the reduction that intercouples between main radiating element；Increase isolation element between main radiating element, further decreases main spoke
Intercoupling between unit is penetrated, so as to improve the isolation of mimo system.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (10)
1. a kind of mimo antenna system, it is characterised in that: including first layer radiating element, second layer medium plate unit and third layer
Ground plane unit, the first layer radiating element are printed on second layer medium plate unit front, the third layer ground plane unit
It is printed on the second layer medium plate unit back side, the first layer radiating element includes antenna primary radiation piece and parasitic antenna.
2. a kind of mimo antenna system according to claim 1, it is characterised in that: the antenna primary radiation piece and spurious element
Gap is equipped between part.
3. a kind of mimo antenna system according to claim 2, it is characterised in that: the parasitic antenna is in rectangular patch.
4. a kind of mimo antenna system according to claim 2, it is characterised in that: the antenna primary radiation on piece is etched with
First rectangular slot.
5. a kind of mimo antenna system according to claim 1, it is characterised in that: the second layer medium plate unit is just
Face is also printed with feeder line.
6. a kind of mimo antenna system according to claim 5, it is characterised in that: the feeder line first port and antenna master
Radiation fin connection, the feeder line second port are connect with peripheral transmission circuit.
7. a kind of mimo antenna system according to claim 5, it is characterised in that: presented on the third layer ground plane unit
Position corresponding to line is etched with the second rectangular slot.
8. a kind of mimo antenna system according to claim 5, it is characterised in that: on the third layer ground plane unit
Isolation element is equipped between position corresponding to two feeder lines.
9. a kind of mimo antenna system according to claim 8, it is characterised in that: the isolation element is used in third layer
The complementary open-loop resonator of ground plane unit etching.
10. a kind of mimo antenna system according to claim 1, it is characterised in that: the second layer medium plate unit is adopted
With Arlon-TC350 substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328274.6A CN110061354A (en) | 2019-04-23 | 2019-04-23 | A kind of mimo antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910328274.6A CN110061354A (en) | 2019-04-23 | 2019-04-23 | A kind of mimo antenna system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110061354A true CN110061354A (en) | 2019-07-26 |
Family
ID=67320295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910328274.6A Pending CN110061354A (en) | 2019-04-23 | 2019-04-23 | A kind of mimo antenna system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110061354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697300A (en) * | 2020-05-13 | 2020-09-22 | 中国科学院上海微系统与信息技术研究所 | Multi-channel transmission structure for low-temperature interconnection and transmission line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160006116A1 (en) * | 2014-07-07 | 2016-01-07 | King Fahd University Of Petroleum And Minerals | Multi-band active integrated mimo antennas |
| CN106876905A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of double frequency mimo antenna of high-isolation |
-
2019
- 2019-04-23 CN CN201910328274.6A patent/CN110061354A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160006116A1 (en) * | 2014-07-07 | 2016-01-07 | King Fahd University Of Petroleum And Minerals | Multi-band active integrated mimo antennas |
| CN106876905A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of double frequency mimo antenna of high-isolation |
Non-Patent Citations (1)
| Title |
|---|
| ANJALI A. CHAUDHARI等: "Compact Dual-band MIMO Antenna with High Isolation for 3/4G,Wi-Fi, Bluetooth, Wi-MAX and WLAN Applications", 《2016 PROGRESS IN ELECTROMAGNETIC RESEARCH SYMPOSIUM》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697300A (en) * | 2020-05-13 | 2020-09-22 | 中国科学院上海微系统与信息技术研究所 | Multi-channel transmission structure for low-temperature interconnection and transmission line |
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Application publication date: 20190726 |
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