CN105977635B - Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system - Google Patents
Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system Download PDFInfo
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- CN105977635B CN105977635B CN201610305775.9A CN201610305775A CN105977635B CN 105977635 B CN105977635 B CN 105977635B CN 201610305775 A CN201610305775 A CN 201610305775A CN 105977635 B CN105977635 B CN 105977635B
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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
- H01Q1/48—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
- H01Q1/36—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
- H01Q1/50—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- 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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- 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
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses the miniaturization directional mimo antennas for being applied to New-generation distributed wireless communication system, it includes bottom plate and antenna element, the lower surface of bottom plate is equipped with metal ground plane, antenna element includes in vertically disposed first antenna plate two-by-two, second antenna plate and substrate, metal antenna body is respectively equipped in the first antenna plate and the second antenna plate, the upper surface of substrate corresponds to first antenna plate and the second antenna plate is respectively equipped with metal and is shorted coupling circuit layer, metal antenna body is shorted the electrical connection of coupling circuit layer with corresponding metal, first, second antenna plate respectively connects coaxial signal line all the way, first, the metal antenna body of second antenna plate passes through the metal ground plane of a conducting wire connecting bottom board lower surface respectively.WLAN 2.4 ~ 2.485GHz and 5.15 ~ 5.85GHz working frequency range can be completely covered in the present invention, small in size, and isolation is high, and directed radiation performance is good, influenced by background installation environment smaller, be suitable for ceiling installation.
Description
Technical field
The present invention relates to antenna technical fields more particularly to a kind of applied to the small of New-generation distributed wireless communication system
Type directional mimo antenna.
Background technique
For new wireless system, available wireless frequency spectrum is very limited, therefore, additional not utilizing
In the case where frequency spectrum resource, the channel capacity and reliability for increasing existing wireless system are considerable.Information theory and existing
Some research is all predictive of the potential huge channel capacity of mimo wireless communication system.But it also needs to break through in practical applications
Some difficult points, the design that miniaturization orients low section mimo antenna is one of difficult point.In the design of mimo antenna system
The two parameters of Cheng Zhong, antenna amount and antenna element need emphasis to consider.The quantity of antenna, which determines, realizes MIMO channel radio
Believe the effect that power system capacity is promoted, but the increase of antenna amount will necessarily also bring other problems.If by a large amount of antenna
The base station end of insertion mobile communication is not limiting upon practical application since the limitation of volume is relatively small, however in limited bulk
Mobile terminal device in be embedded in a large amount of antenna, the size and spacing of antenna element are necessarily required to reduce.But according to antenna
The basic knowledge mutual coupling being known that between antenna element and the spacing of antenna element between have significantly relationship, spacing is got over
Small, the coupling of generation will be higher, also will the performances such as capacity to place MIMO communication system generate damage.Therefore, how
Mutiple antennas is designed in a wireless communication device and realizes the low-cross coupling high isolation between antenna element, is become in mimo antenna research
Urgent problem and difficult point.
The good single-frequency of design performance and multifrequency mimo antenna first have to design the lesser antenna element of size；Secondly
It seeks to coordinate the problem of isolation and the limited size of mobile terminal device between antenna element mutually restrict, is meeting nothing
Line communication equipment overall dimensions guarantee the good isolation under working band while requirement.Therefore, isolation is MIMO days
One key parameter of line, is studied and small design, the mimo antenna of high isolation have positive meaning and good application
Prospect.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind to be applied to New-generation distributed wireless communication
The miniaturization directional mimo antenna of system.
The technical solution adopted by the present invention is that:
Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system comprising bottom plate and antenna list
Member, the antenna element are set to the upper surface of bottom plate, and the lower surface of the bottom plate is equipped with metal ground plane, the antenna element packet
First antenna plate, the second antenna plate and substrate are included, the first antenna plate and the second antenna plate are respectively perpendicular set on the upper of substrate
On surface, and first antenna plate, the second antenna plate and substrate are in be vertically arranged two-by-two, the first antenna plate and the second antenna plate
On be respectively equipped with metal antenna body, the upper surface of the substrate correspond to first antenna plate and the second antenna plate to be respectively equipped with metal short
Coupling circuit layer is connect, the metal antenna body of the first antenna plate is shorted the electrical connection of coupling circuit layer with corresponding metal, described
The metal antenna body of second antenna plate and corresponding metal are shorted the electrical connection of coupling circuit layer, the first antenna plate with it is same all the way
The electrical connection of axis signal line, the metal antenna body of first antenna plate are connect with one end of one first conducting wire, the other end of the first conducting wire
The metal ground plane for sequentially passing through substrate and lower surface of base plate connects, all the way the shielded layer of coaxial signal line respectively with the first conducting wire
The other end and lower surface of base plate metal ground plane electrical connection；The coaxial signal line of second antenna plate and another way is electrically connected
It connects, the metal antenna body of the second antenna plate is connect with one end of one second conducting wire, and the other end of the second conducting wire sequentially passes through substrate
Connect with the metal ground plane of lower surface of base plate, the shielded layer of another way coaxial signal line respectively with the other end of the second conducting wire and
The metal ground plane of lower surface of base plate is electrically connected.
The center line that is projected as first antenna plate vertical substrate of second antenna plate on first antenna plate.
The metal antenna body includes two in mirror symmetry setting and two-wire line interconnected, two-wire line
Upper end be equipped with shape antenna oscillator unit, the centre of two-wire line is equipped with triangle antenna oscillator unit.
The lower end of the two-wire line is shorted the electrical connection of coupling circuit layer with corresponding metal, same metal antenna body
Two-wire line is fed by conducting wire.
The metal is shorted the fluting that coupling circuit layer offers H-shaped.
The substrate is fixed on the upper surface of bottom plate by four fixed columns that its corner is equipped with.
The bottom plate is circular pcb board.
Mounting seat is equipped at the lower surface center of the bottom plate, the mounting seat is equipped with to be installed for coaxial signal line
The periphery wall in hole, mounting seat is equipped with screw thread.
The size of first antenna plate is 35mm × 15mm, and the size of the second antenna plate is identical as first antenna board size.
First antenna plate, the second antenna plate center spacing are 55mm, and isolation is about 45dB between antenna port, can be according to reality
Border needs, and first antenna plate and the second antenna plate center spacing can be to adjust between 20mm-100mm.
The distance of the substrate to bottom plate is 10mm, and according to actual needs, the distance of substrate to bottom plate can be in 2mm -30mm
Between adjust.
The invention adopts the above technical scheme, and first antenna plate, the second antenna plate and substrate guarantee in being vertically arranged two-by-two
First antenna plate and the second antenna plate can work independently, and can keep good radiation characteristic.The gold of lower surface of base plate
Effective environmental disturbances of the shielding from lower surface of base plate side of setting for belonging to ground plane, reduce back lobe, in ceiling installation
It is small on the influence of the performance of antenna, and realize the directed radiation of double frequency mimo antenna.It is in mirror that the metal antenna body, which includes two,
As two-wire line arranged symmetrically and interconnected, the upper end of two-wire line is equipped with shape antenna oscillator unit, shape day
Linear oscillator unit can be used for the wlan network of 2.4 ~ 2.485GHz, and the centre of two-wire line is equipped with triangle antenna oscillator list
Member, triangle antenna oscillator unit can be used for the wlan network of 5.15 ~ 5.85GHz working frequency range, effectively improve bandwidth.Metal
Antenna body passes through conducting wire with the two-wire line that corresponding metal is shorted the electrical connection of coupling circuit layer and same metal antenna body
The structure of electrical connection plays the lightning-arrest effect of lightning protection, and metal is shorted coupling circuit layer and slots to form short-circuit loop by H-shaped, has
Effect ground reduces impedance.The setting of first conductor and the second conductor connects metal antenna body and the metal ground plane of lower surface of base plate
It connects, has effectively canceled out the electric current of the outer conductor of coaxial line, be conducive to 1/4 wavelength balance and feed, improve the isolation of antenna.
Double frequency mimo antenna provided by the invention, can be completely covered 2.4 ~ 2.485GHz of WLAN and 5.15 ~
5.85GHz working frequency range, small in size, isolation is high, and directed radiation performance is good, is influenced by background installation environment smaller, is suitble to
It is installed in ceiling.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is the structure of the miniaturization directional mimo antenna for being applied to New-generation distributed wireless communication system of the invention
Schematic diagram；
Fig. 2 is looking up for the miniaturization directional mimo antenna applied to New-generation distributed wireless communication system of the invention
Schematic diagram；
Fig. 3 is the first of the miniaturization directional mimo antenna for being applied to New-generation distributed wireless communication system of the invention
The structural schematic diagram of antenna plate or the second antenna plate.
Specific embodiment
As shown in one of Fig. 1-3, the present invention includes bottom plate 1 and antenna element 2, and the antenna element 2 is set to the upper of bottom plate 1
Surface, the lower surface of the bottom plate 1 are equipped with metal ground plane, and the antenna element 2 includes first antenna plate 21, the second antenna plate
22 and substrate 23, the first antenna plate 21 and the second antenna plate 22 be respectively perpendicular on the upper surface of substrate 23, and first
Antenna plate 21, the second antenna plate 22 and substrate 23 are in be vertically arranged two-by-two, on the first antenna plate 21 and the second antenna plate 22
It is respectively equipped with metal antenna body 20, the metal antenna body 20 includes two in mirror symmetry setting and two-wire interconnected passes
Defeated line 5, the upper end of the two-wire line 5 are equipped with shape antenna oscillator unit 52, and the centre of two-wire line 5 is equipped with triangle
Antenna oscillator unit 53.
The lower end of the two-wire line 5 is shorted coupling circuit layer 24 with corresponding metal and is electrically connected, same metal antenna
The two-wire line 5 of body 20 is fed by conducting wire 6.The metal antenna body 20 and the tie point of coaxial signal line are metal antenna
The feeding point of body 20, feeding point are located at triangle antenna oscillator unit 53 below, and the outer conductor of coaxial signal line connects Double wire transmission
One side of line 5, center line connect the another side of two-wire line 5.
The upper surface of the substrate 23 corresponds to first antenna plate 21 and the second antenna plate 22 is respectively equipped with metal and is shorted coupling
Circuit layer 24, the metal antenna body 20 of the first antenna plate 21 are shorted coupling circuit layer 24 with corresponding metal and are electrically connected, institute
It states the metal antenna body 20 of the second antenna plate 22 and corresponding metal is shorted coupling circuit layer 24 and is electrically connected, the first antenna plate
21 are electrically connected with coaxial signal line 3 all the way, and the metal antenna body 20 of first antenna plate 21 is connect with one end of one first conducting wire 31,
The tie point of 3 center line of coaxial signal line and two-wire line 5 is the starting point of the first conducting wire 31, the other end of the first conducting wire 31 according to
The secondary substrate 23 that passes through is connect with the metal ground plane of 1 lower surface of bottom plate, and the shielded layer of coaxial signal line 3 is led with first respectively all the way
The metal ground plane of 1 lower surface of the other end and bottom plate of line 31 is electrically connected.Second antenna plate 22 and another way coaxial signal
Line 4 is electrically connected, and the metal antenna body 20 of the second antenna plate 22 connect with one end of one second conducting wire 41, the second conducting wire 41 it is another
End sequentially passes through substrate 23 and connect with the metal ground plane of 1 lower surface of bottom plate, the shielded layer of another way coaxial signal line 4 respectively with
The metal ground plane of 1 lower surface of the other end and bottom plate of second conducting wire 41 is electrically connected.
The center that is projected as first antenna plate 21 vertical substrate 23 of second antenna plate 22 on first antenna plate 21
Line.
The metal is shorted the fluting that coupling circuit layer 24 offers H-shaped.
The substrate 23 is fixed on the upper surface of bottom plate 1 by four fixed columns 7 that its corner is equipped with.
The bottom plate 1 is circular pcb board.
Mounting seat 8 is equipped at the lower surface center of the bottom plate 1, the mounting seat 8 is equipped with pacifies for coaxial signal line
Hole 81 is filled, the periphery wall of mounting seat is equipped with screw thread.
The invention adopts the above technical scheme, and first antenna plate 21, the second antenna plate 22 and substrate 23 are in vertically to set two-by-two
It sets, ensure that first antenna plate 21 and the second antenna plate 22 can work independently, and good radiation characteristic can be kept.Bottom plate
Effective environmental disturbances of the shielding from 1 lower surface side of bottom plate of the setting of the metal ground plane of 1 lower surface, reduce back lobe,
It is small on the influence of the performance of antenna, and realize the directed radiation of double frequency mimo antenna.The metal antenna body 20 includes two
The upper end of mirror symmetry setting and two-wire line interconnected 5, the two-wire line 5 is equipped with shape antenna oscillator unit
52, shape antenna oscillator unit 52 can be used for the wlan network of 2.4 ~ 2.485GHz, and the centre of two-wire line 5 is equipped with triangle
Antenna oscillator unit 53, triangle antenna oscillator unit 53 can be used for the wlan network of 5.15 ~ 5.85GHz working frequency range, effectively
Raising bandwidth.Metal antenna body 20 is shorted the electrical connection of coupling circuit layer 24 and same metal antenna body 20 with corresponding metal
Two-wire line 5 the lightning-arrest effect of lightning protection is played by the structure that conducting wire is electrically connected, it is logical that metal is shorted coupling circuit layer 24
It crosses H-shaped to slot to form short-circuit loop, is effectively reduced impedance.The setting of first conductor and the second conductor is by 20 He of metal antenna body
The metal ground plane of 1 lower surface of bottom plate connects, and has effectively canceled out the electric current of the outer conductor of coaxial line, is conducive to 1/4 wavelength balance
Feed, improves the isolation of antenna.
Double frequency mimo antenna provided by the invention, can be completely covered 2.4 ~ 2.485GHz of WLAN and 5.15 ~
5.85GHz working frequency range, small in size, isolation is high, and directed radiation performance is good, is influenced by background installation environment smaller, is suitble to
It is installed in ceiling.
Claims (9)
1. being applied to the miniaturization directional mimo antenna of New-generation distributed wireless communication system, it is characterised in that: it includes bottom
Plate and antenna element, the antenna element are set to the upper surface of bottom plate, and the lower surface of the bottom plate is equipped with metal ground plane, the day
Line unit includes first antenna plate, the second antenna plate and substrate, and the first antenna plate and the second antenna plate are respectively perpendicular and are set to
On the upper surface of substrate, and first antenna plate, the second antenna plate and substrate be in being vertically arranged two-by-two, the first antenna plate and the
It is respectively equipped with metal antenna body in two antenna plates, the metal antenna body includes two and is arranged in mirror symmetry and interconnected
Two-wire line, the two-wire line upper end are connected with a shape antenna oscillator unit, and the two-wire line corresponds to shape
The lower section of antenna oscillator unit is equipped with triangle antenna oscillator unit；The upper surface of the substrate corresponds to first antenna plate and second
Antenna plate is respectively equipped with metal and is shorted coupling circuit layer, and the metal antenna body of the first antenna plate is shorted coupling with corresponding metal
Circuit layer electrical connection is closed, the metal antenna body of second antenna plate is shorted the electrical connection of coupling circuit layer, institute with corresponding metal
It states first antenna plate to be electrically connected with coaxial signal line all the way, the two-wire that the outer conductor of coaxial signal line connects first antenna plate all the way passes
One side of defeated line, the center line of coaxial signal line connects the another side of the two-wire line of first antenna plate all the way；Coaxial letter all the way
The center line of number line is connect with the tie point of the two-wire line of first antenna plate with one end of one first conducting wire, the first conducting wire
The metal ground plane that the other end sequentially passes through substrate and lower surface of base plate connects, and the shielded layer of coaxial signal line is respectively with all the way
The other end of one conducting wire and the metal ground plane electrical connection of lower surface of base plate；The coaxial signal of second antenna plate and another way
Line electrical connection, the outer conductor of another way coaxial signal line connect one side of the two-wire line of the second antenna plate, and another way is coaxially believed
The center line of number line connects the another side of the two-wire line of the second antenna plate；The center line of another way coaxial signal line and second day
The tie point of the two-wire line of line plate is connect with one end of one second conducting wire, the other end of the second conducting wire sequentially pass through substrate with
The metal ground plane of lower surface of base plate connects, the shielded layer of another way coaxial signal line respectively with the other end of the second conducting wire and bottom
The metal ground plane of plate lower surface is electrically connected.
2. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the center line that is projected as first antenna plate vertical substrate of second antenna plate on first antenna plate.
3. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the lower end of the two-wire line is shorted the electrical connection of coupling circuit layer, same metal antenna with corresponding metal
The two-wire line of body is fed by conducting wire.
4. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the metal, which is shorted coupling circuit layer, is equipped with fluting, the fluting provides circuit for metal antenna body.
5. the miniaturization directional mimo antenna according to claim 4 applied to New-generation distributed wireless communication system,
It is characterized by: the shape of the fluting is H-shaped.
6. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the substrate is fixed on the upper surface of bottom plate by four fixed columns that its corner is equipped with.
7. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the bottom plate is circular pcb board.
8. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: being equipped with mounting seat at the lower surface center of the bottom plate, the mounting seat is equipped with pacifies for coaxial signal line
Hole is filled, the periphery wall of mounting seat is equipped with screw thread.
9. the miniaturization directional mimo antenna according to claim 1 applied to New-generation distributed wireless communication system,
It is characterized by: the size of the first antenna plate is 35mm × 15mm, the size and first antenna board size of the second antenna plate
It is identical；The distance of the substrate to bottom plate is 2mm -30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305775.9A CN105977635B (en) | 2016-05-10 | 2016-05-10 | Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305775.9A CN105977635B (en) | 2016-05-10 | 2016-05-10 | Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system |
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| Publication Number | Publication Date |
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| CN105977635A CN105977635A (en) | 2016-09-28 |
| CN105977635B true CN105977635B (en) | 2018-12-21 |
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| CN201610305775.9A Active CN105977635B (en) | 2016-05-10 | 2016-05-10 | Miniaturization directional mimo antenna applied to New-generation distributed wireless communication system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017216043A1 (en) * | 2017-09-12 | 2019-03-14 | Robert Bosch Gmbh | A system comprising a metallic body and a sensor device with an optimized antenna unit |
| CN109378569B (en) * | 2018-12-05 | 2021-01-22 | 歌尔股份有限公司 | Mobile terminal device |
| CN112886198A (en) * | 2021-03-12 | 2021-06-01 | 深圳市道通智能航空技术股份有限公司 | Antenna, wireless signal processing equipment and unmanned aerial vehicle |
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| TWM305970U (en) * | 2006-08-16 | 2007-02-01 | Cybertan Technology Inc | Antenna array structure |
| CN102201613A (en) * | 2010-03-24 | 2011-09-28 | 孙全辉 | Multi-frequency-range ceiling-type antenna |
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| US20140030989A1 (en) * | 2012-07-25 | 2014-01-30 | Tyco Electronics Corporation | Multi-element omni-directional antenna |
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| TWM305970U (en) * | 2006-08-16 | 2007-02-01 | Cybertan Technology Inc | Antenna array structure |
| CN102201613A (en) * | 2010-03-24 | 2011-09-28 | 孙全辉 | Multi-frequency-range ceiling-type antenna |
| US20140030989A1 (en) * | 2012-07-25 | 2014-01-30 | Tyco Electronics Corporation | Multi-element omni-directional antenna |
| CN102882015A (en) * | 2012-09-27 | 2013-01-16 | 广州杰赛科技股份有限公司 | Multi-input multi-output antenna system |
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