CN106684550A - Dual-polarized antenna with H-shaped slot structure - Google Patents
Dual-polarized antenna with H-shaped slot structure Download PDFInfo
- Publication number
- CN106684550A CN106684550A CN201710035295.XA CN201710035295A CN106684550A CN 106684550 A CN106684550 A CN 106684550A CN 201710035295 A CN201710035295 A CN 201710035295A CN 106684550 A CN106684550 A CN 106684550A
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- China
- Prior art keywords
- dual
- antenna
- width
- polarized antenna
- transmission line
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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
- H01Q1/52—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
- 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
- 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
Abstract
The invention provides a dual-polarized antenna with an H-shaped slot structure, relates to a dual-polarized MIMO antenna and provides the dual-polarized antenna with the H-shaped slot structure, which is simple in structure and can be applied to an MIMO system at a WLAN band, and of which the isolation between ports is greater than 25dB in a working band and the cross polarization ratio in a main radiation direction is greater than 20dB. The dual-polarized antenna comprises a dielectric substrate, wherein a metal layer coats the upper surface of the dielectric substrate; the metal layer on the upper surface is provided with an H-shaped slot and a coplanar waveguide feed transmission line patch; a coplanar waveguide feed transmission line slot is arranged in the side part of the coplanar waveguide feed transmission line patch; and two strip metal layers coat the lower surface of the dielectric substrate, wherein one strip metal layer is connected with the metal layer on the upper surface, the other strip metal layer is a feed microstrip line and the center line of the feed microstrip line overlaps with those of the H-shaped slot and the dielectric substrate. The dual-polarized antenna with the H-shaped slot structure can be applied to the MIMO system at the WLAN band.
Description
Technical field
The present invention relates to dual polarization mimo antenna, more particularly, to a kind of dual polarized antenna of H-shaped gap structure.
Background technology
Modern wireless communication systems need to realize higher transfer rate, bigger channel capacity and more preferably spectrum utilization
Efficiency, due to the restriction of frequency spectrum resource, improving the availability of frequency spectrum becomes the important channel for alleviating the problems.MIMO technology can be provided
Spatial multiplex gains and diversity gain [Frattasi S, Fathi H, Fitzek F H P, et al.Defining 4G
technology from the users perspective[J].Network,IEEE,2006,20(1):35-41.], it is existing
For the important subject of radio communication.Multiple antenna design is the key technology of mimo system, and multi-polarization antenna utilizes electromagnetic wave
The characteristics of polarization orthogonal, multiple transmittings or RX path can be realized on an antenna element, be set in communication base station and terminal
It has been used widely in standby.
Various dual polarized antennas that can be applicable to mimo system existing at present, such as document [Liu Y, Xue J, Cao Y, et
al.A compact omnidirectional dual-polarized antenna for 2.4-GHz WLAN
applications with highly isolated orthogonal slots[J].Progress In
Electromagnetics Research C,2013,43:135-149.] in two of stereochemical structure side wall orthogonal gaps produce
Raw vertically and horizontally polarised direction ripple, the horizontal gap of bending produces vertical polarization, and the vertical clearance gap with two open ends is produced
Raw horizontal polarization, the isolation in working band is more than 35dB.Document [Li Y, Zhang Z, Chen W, et al.A
dual-polarization slot antenna using a compact CPW feeding structure[J]
.Antennas and Wireless Propagation Letters,IEEE,2010,9:191-194.] utilize co-planar waveguide
The unipole antenna and Waveguide slot of feed realizes dual polarization characteristic, and interport isolation reaches 20dB.
Or but above-mentioned related dual polarized antenna adopts stereochemical structure, or using discrete radiation element, antenna size
Larger, structure is complex.And, during using planar structure, the isolation between antenna port is affected again.
The content of the invention
It is an object of the invention to provide a kind of simple structure, in working band, the isolation between port is more than 25dB,
Main radiation direction cross polarization ratio is more than 20dB；Can be applicable to the bipolar of H-shaped gap structure in the mimo system of WLAN frequency ranges
Change antenna.
The present invention includes medium substrate, and medium substrate upper surface is coated with metal level, and the upper surface metal level is provided with H-shaped seam
Gap and coplanar wave guide feedback transmission line paster, the side of coplanar wave guide feedback transmission line paster is provided with coplanar wave guide feedback transmission line
Gap, medium substrate lower surface is coated with two long-bar metal layers, wherein the metal level phase of a long-bar metal layer and upper surface
Even, another long-bar metal layer is feeding microstrip line, in the center line of feeding microstrip line and the center line in H-shaped gap and medium substrate
Line overlaps.
Further：
The medium substrate be rectangle structure, length be 104~112mm, width be 78~82mm, thickness be 1.4~
1.6mm, relative dielectric constant is 2.0~2.4, and loss tangent is not more than 0.001.
The vertical clearance gap length in the H-shaped gap is 44~48mm, and width is 3.6~4.4mm, and the length of horizontal gap is
24~26mm, width is 11~13mm.The coplanar wave guide feedback transmission line gap length be 32~36mm, width be 0.4~
0.6mm；The coplanar wave guide feedback transmission line patch width is 2.2~2.6mm；The bonding jumper length is 34~38mm, wide
Spend for 1.8~2.2mm.
Compared with the prior art, the present invention has the advantages that following prominent and significant effect：
The present invention adopts planar substrates, and the dual polarization knot that radiation element is put altogether is realized in the case where high port isolation situation is ensured
Structure.The present invention is the slot antenna combined using coplanar wave guide feedback and feed microstrip line.Coplanar wave guide feedback is presented with microstrip line
It is electrically coupled and realizes dual polarization characteristic, in working band, the isolation between port is more than 25dB, main radiation direction cross polarization ratio
More than 20dB.Present invention can apply in the mimo system of WLAN frequency ranges.
Description of the drawings
Fig. 1 is the overlooking the structure diagram of the medium substrate upper surface of the embodiment of the present invention.
Fig. 2 is the overlooking the structure diagram of the medium substrate lower surface of the embodiment of the present invention.
The curve chart that Fig. 3 is lost for two reflection coefficient of port of antenna of the embodiment of the present invention.In Fig. 3, curve a1 is that antenna is returned
Ripple is lost S11 curves；Curve b1 is antenna return loss S22 curve.
Fig. 4 for the embodiment of the present invention antenna port between isolation curve chart.In Fig. 4, curve a2 is between antenna port
Isolation S12 curves；Curve b2 is isolation S21 curves between antenna port.
Antenna E faces directional diagram when Fig. 5 is encouraged for the first port of the embodiment of the present invention.In Fig. 5, E when curve a3 is excitation
The main polarization directional diagram in face；E faces Cross polarization pattern when curve b3 is excitation.
Antenna H faces directional diagram when Fig. 6 is encouraged for the first port of the embodiment of the present invention.In Fig. 6, H when curve a4 is excitation
The main polarization directional diagram in face；H faces Cross polarization pattern when curve b4 is excitation.
Antenna E faces directional diagram when Fig. 7 is encouraged for the second port of the embodiment of the present invention.In Fig. 7, E when curve a5 is excitation
The main polarization directional diagram in face；E faces Cross polarization pattern when curve b5 is excitation.
Antenna H faces directional diagram when Fig. 8 is encouraged for the second port of the embodiment of the present invention.In Fig. 8, H when curve a6 is excitation
The main polarization directional diagram in face；H faces Cross polarization pattern when curve b6 is excitation.
Specific embodiment
Below in conjunction with drawings and Examples, the present invention will be described in further detail.
Referring to Fig. 1 and 2, the embodiment of the present invention includes medium substrate 1, and the upper surface of medium substrate 1 is coated with metal level, on this
Surface metal-layer is provided with H-shaped gap (being made up of vertical clearance gap 2 and horizontal gap 3) and (square of coplanar wave guide feedback transmission line paster 5
Shape), the side of coplanar wave guide feedback transmission line paster 5 is provided with coplanar wave guide feedback transmission line gap 4, the lower surface of medium substrate 1
Two long-bar metal layers 6 are coated with, wherein the metal level of a long-bar metal layer 6 and the upper surface of medium substrate 1 is in medium substrate 1
Side is connected, and another long-bar metal layer 6 corresponding with port 8 is the center line in feeding microstrip line, its center line and H-shaped gap
And the center line of medium substrate 1 overlaps.The longitudinal midline of the elongated metal layer 6 overlaps with the center line of medium substrate 1.
Port 7 is used as coplanar wave guide feedback port.Port 8 is used as feed microstrip line port.
The medium substrate 1 is rectangle structure, and length L is 108mm (can be 104~112mm), and width W (can for 80mm
For 78~82mm), thickness H is 1.5mm (can be 1.4~1.6mm), and relative dielectric constant is 2.0~2.4, loss tangent
No more than 0.001.Length L1 of the vertical clearance gap 2 in the H-shaped gap is 46mm (can be 44~48mm), and width W1 is 4.0mm
(can be 3.6~4.4mm), length L2 of horizontal gap 3 is 26mm (can be 24~26mm), width W2 be 12mm (can be 11~
13mm).Length L3 in described coplanar wave guide feedback transmission line gap 4 is 34mm (can be 32~36mm), and width W3 is 0.5mm
(can be 0.4~0.6mm)；The width of coplanar wave guide feedback transmission line paster 5 is 2.4mm (can be 2.2~2.6mm).The gold
Length L5 of category bar 6 is 36mm (can be 34~38mm), and width W5 is 2.0mm (can be 1.8~2.2mm).
It is that 2 reflection coefficient of port of antenna are lost frequency curve chart referring to Fig. 3.From curve ,-the 10dB of feed port 7 is returned
Ripple loss bandwidth range is 2.16~2.68GHz, -10dB return losses the bandwidth range of feed port 8 is 2.30~
2.70GHz。
It is the curve chart of isolation between antenna port referring to Fig. 4.In 2.40~2.484GHz of working band, the He of port 1
Isolation between 2 is more than 25dB.
It is directional diagram when 2 ports of antenna are encouraged respectively referring to Fig. 5~8.Fig. 5 is antenna when feed port 7 is encouraged
E faces directional diagram, Fig. 6 is the H faces directional diagram of antenna when feed port 7 is encouraged, and Fig. 7 is the E face sides of antenna when feed port 8 is encouraged
Xiang Tu, Fig. 8 are the H faces directional diagram of antenna when feed port 8 is encouraged.The main polarization of antenna is vertical pole when feed port 7 is encouraged
Change, the main polarization of antenna is horizontal polarization when feed port 8 is encouraged.It is more than in the cross polarization ratio of main radiation direction antenna
20dB。
Claims (3)
1. a kind of dual polarized antenna of H-shaped gap structure, including medium substrate, it is characterised in that medium substrate upper surface is coated
There is metal level, the upper surface metal level is provided with H-shaped gap and coplanar wave guide feedback transmission line paster, coplanar wave guide feedback transmission line
The side of paster is provided with coplanar wave guide feedback transmission line gap, and medium substrate lower surface is coated with two long-bar metal layers, wherein
One long-bar metal layer is connected with the metal level of upper surface, and another long-bar metal layer is feeding microstrip line, feeding microstrip line
Center line overlaps with the center line in H-shaped gap and the center line of medium substrate.
2. as claimed in claim 1 a kind of dual polarized antenna of H-shaped gap structure, it is characterised in that the medium substrate is length
Square structure, length be 104~112mm, width be 78~82mm, thickness be 1.4~1.6mm, relative dielectric constant be 2.0~
2.4, loss tangent is not more than 0.001.
3. as claimed in claim 1 a kind of dual polarized antenna of H-shaped gap structure, it is characterised in that the H-shaped gap it is vertical
Gap length is 44~48mm, and width is 3.6~4.4mm, and the length of horizontal gap is 24~26mm, and width is 11~13mm；
The coplanar wave guide feedback transmission line gap length is 32~36mm, and width is 0.4~0.6mm；The coplanar wave guide feedback is passed
Defeated line patch width is 2.2~2.6mm；The bonding jumper length is 34~38mm, and width is 1.8~2.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035295.XA CN106684550A (en) | 2017-01-17 | 2017-01-17 | Dual-polarized antenna with H-shaped slot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035295.XA CN106684550A (en) | 2017-01-17 | 2017-01-17 | Dual-polarized antenna with H-shaped slot structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106684550A true CN106684550A (en) | 2017-05-17 |
Family
ID=58860084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710035295.XA Pending CN106684550A (en) | 2017-01-17 | 2017-01-17 | Dual-polarized antenna with H-shaped slot structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258433A (en) * | 2018-01-05 | 2018-07-06 | 吉林大学 | A kind of compact-sized dual polarization printing slot antenna |
| CN109066079A (en) * | 2018-08-21 | 2018-12-21 | 深圳市信维通信股份有限公司 | Millimeter wave dual polarization slot antenna system and mobile terminal suitable for 5G communication |
| CN110581354A (en) * | 2019-08-28 | 2019-12-17 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna structure and mobile device |
| CN110690555A (en) * | 2018-07-06 | 2020-01-14 | 纬创资通股份有限公司 | Mobile device |
| CN112909522A (en) * | 2021-01-15 | 2021-06-04 | 西安电子科技大学 | Odd-even mode fused miniaturized broadband narrow-slit antenna |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401076A (en) * | 2013-08-16 | 2013-11-20 | 厦门大学 | Double feed and double polarization microstrip antenna |
-
2017
- 2017-01-17 CN CN201710035295.XA patent/CN106684550A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401076A (en) * | 2013-08-16 | 2013-11-20 | 厦门大学 | Double feed and double polarization microstrip antenna |
Non-Patent Citations (1)
| Title |
|---|
| WEIWEN LI,ET-AL: "《Dual-Polarized H-Shaped Printed Slot Antenna》", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258433A (en) * | 2018-01-05 | 2018-07-06 | 吉林大学 | A kind of compact-sized dual polarization printing slot antenna |
| CN110690555A (en) * | 2018-07-06 | 2020-01-14 | 纬创资通股份有限公司 | Mobile device |
| CN109066079A (en) * | 2018-08-21 | 2018-12-21 | 深圳市信维通信股份有限公司 | Millimeter wave dual polarization slot antenna system and mobile terminal suitable for 5G communication |
| CN109066079B (en) * | 2018-08-21 | 2023-10-13 | 深圳市信维通信股份有限公司 | Millimeter wave dual-polarized slot antenna system suitable for 5G communication and mobile terminal |
| CN110581354A (en) * | 2019-08-28 | 2019-12-17 | 深圳市信维通信股份有限公司 | Dual-polarization 5G millimeter wave antenna structure and mobile device |
| CN112909522A (en) * | 2021-01-15 | 2021-06-04 | 西安电子科技大学 | Odd-even mode fused miniaturized broadband narrow-slit antenna |
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Application publication date: 20170517 |
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