CN105896048A - Three-polarization slot antenna with gate gap ground capacitor loading - Google Patents
Three-polarization slot antenna with gate gap ground capacitor loading Download PDFInfo
- Publication number
- CN105896048A CN105896048A CN201610218454.5A CN201610218454A CN105896048A CN 105896048 A CN105896048 A CN 105896048A CN 201610218454 A CN201610218454 A CN 201610218454A CN 105896048 A CN105896048 A CN 105896048A
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- Prior art keywords
- rabbet joint
- line
- antenna
- seam
- radiation
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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
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a three-polarization slot antenna with gate gap ground capacitor loading, which relates to a slot antenna. The antenna is composed of three single-polarization antennas (13) placed vertically mutually. Each antenna (13) comprises a dielectric substrate (1), a metal ground (2) and a radiation slot (3) on the dielectric substrate (1) and a microstrip feeder (4), wherein the metal ground (2) is provided with the radiation slot (3) and multiple parallel gate gaps (6); two ends of the radiation slot (3) are short-circuited; a plurality of capacitors (7) are in parallel bridge connection onto the edge of the rest part (9), except the part (8) intersected with the microstrip feeder (4), of the radiation slot (3); and one end of the microstrip feeder (4) is an antenna port (10) and the other end of the microstrip feeder (4) is open-circuited, passes across the radiation slot (3) and extends for a certain length. The antenna size, cross polarization, and shielding can be reduced, and isolation is improved.
Description
Technical field
The present invention relates to a kind of slot antenna, three polarization slot antennas of a kind of grid seam ground capacitive load.
Background technology
Slot antenna is the antithesis antenna of element antenna, has a wide range of applications.But, common slot antenna not only spoke
Penetrate the length of the line of rabbet joint itself and to have 1/2nd wavelength, and radiate and also need to bigger Metal ground around the line of rabbet joint and amass, logical
Often length 1/2nd wavelength bigger than the length of the line of rabbet joint on metal ground, the width big 1/2nd of the width ratio line of rabbet joint on metal ground
Wavelength.Multipolarization MIMO can effectively improve spectrum efficiency and channel capacity, in order to be applied by MIMO technology
To the terminal that volume is little, need co-located for the most like-polarized antenna placement.The radiation of antenna can be produced by bigger metal ground
Occlusion effect so that slot antenna is not suitable for co-located multiple-input and multiple-output (MIMO) application, in particular as multipolarization
When antenna uses, big metal ground will cause the isolation between the cross polarization variation of antenna, antenna port to be deteriorated, these
All will cause the decline of spectrum efficiency and channel capacity.The impedance of the line of rabbet joint simultaneously is very big, also makes slot antenna feeding transmission
The impedance matching of line is relatively difficult.
Summary of the invention
Technical problem: the purpose of the present invention is to propose to three polarization slot antennas of a kind of grid seam ground capacitive load, this antenna is permissible
Reduce length and the area on metal ground radiating the line of rabbet joint, and have and suppress cross polarization, improvement isolation, reduction to block
Effect.
Technical scheme: three polarization slot antennas of the grid seam ground capacitive load of the present invention include three lists being mutually perpendicular to place
The grid seam ground capacitive load antenna of polarization；The grid seam ground capacitive load antenna of each single polarization includes medium substrate, is arranged on
Metal ground on medium substrate and the radiation line of rabbet joint, microstrip feed line；The one side of medium substrate is metal ground, medium substrate another
One side is the conduction band of microstrip feed line；Metal has the radiation line of rabbet joint on the ground, and the shape of the radiation line of rabbet joint is rectangle, and the radiation line of rabbet joint is positioned at
The center on metal ground；The metal grid slot array that a plurality of parallel gate seam is constituted on the ground, the shape of grid seam is rectangle, and grid seam is positioned at
The surrounding of the radiation line of rabbet joint, grid seam is mutually perpendicular to the radiation line of rabbet joint；The short at one end of grid seam；The other end open circuit of grid seam, position
Edge in medium substrate；Two terminal shortcircuits of the radiation line of rabbet joint；The part intersected with microstrip feed line is removed at the radiation line of rabbet joint,
Several electric capacity is had to be connected in parallel across radiating two edges of the line of rabbet joint so that the characteristic impedance step-down of the radiation line of rabbet joint；Metal ground is also
Being the ground plane of described microstrip feed line, one end of microstrip feed line is the port of antenna, the other end of the conduction band of microstrip feed line
Stride across the radiation line of rabbet joint and stretch a segment length to terminal, the open-end of microstrip feed line；The conduction band of microstrip feed line has two parts
Constituting, Part I conduction band is the position just having crossed over the radiation line of rabbet joint from the port of antenna to it, the conduction band of microstrip feed line
Remainder is Part II conduction band.
Change the length and width of Part II conduction band, thus it is possible to vary the operating frequency of antenna, the width of working band and spoke
Penetrate the electrical length of the line of rabbet joint.
In change grid slot array, the spacing of adjacent gate seam, the width of grid seam, grid stitch the short-circuit end distance from the radiation line of rabbet joint, can
To change the operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint.
Change the quantity of loading capacitance, capacitance and spacing, change the spacing of adjacent metal via, radius can be regulated
The characteristic impedance of seam, thus it is possible to vary the operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint.
The electrical length of grid seam should not be taken at 1/4th, to avoid causing resonance radiation, causes cross-polarized rising.
Electric capacity parallel connection is loaded into two edges of the radiation line of rabbet joint, not only makes the characteristic impedance of line of rabbet joint transmission line be reduced to be prone to
With feeding transmission lines matching volume, but also reduce the phase velocity of line of rabbet joint transmission line so that the length of the half-wavelength radiation line of rabbet joint subtracts
Little, it is achieved the radiation line of rabbet joint and then the miniaturization of antenna.The operating frequency master of three polarization slot antennas of grid seam ground capacitive load
Will by radiation the line of rabbet joint resonant frequency determine, but metal ground size, microstrip feed line conduction band radiation the line of rabbet joint position,
The operating frequency of antenna and matching degree can also be adjusted by the length and width of Part II conduction band.Metal ground
Grid seam becomes periodically loading to radius slit, makes again to radiate the line of rabbet joint and becomes periodic slow-wave structure, reduces sky
The electric size of line；Simultaneously because the direction of grid seam is vertical with the direction of the radiation line of rabbet joint, it is suppressed that metal is on the ground along the radiation line of rabbet joint
The electric current in direction, and make the more concentration along the remaining CURRENT DISTRIBUTION radiating line of rabbet joint direction, thus reduce cross-pole
The radiation changed, improves the isolation between antenna port, also reduces the size on metal ground, reduces blocking of metal ground
Effect.
Beneficial effect: three polarization slot antennas of the grid seam ground capacitive load of the present invention provide the benefit that, this antenna is permissible
Reduce the electric size of whole antenna, realize miniaturization, the most also there is the cross polarization of suppression antenna, improve between port
Isolation, and reduce the effect blocked on metal ground.
Accompanying drawing explanation
Fig. 1 is three polarization slot antenna overall structure schematic diagrams of grid seam ground capacitive load.
Fig. 2 be grid seam ground capacitive load three polarization slot antennas in single polarization grid seam ground capacitive load antenna structure show
It is intended to.
Figure has: medium substrate 1, metal ground 2, radiation the line of rabbet joint 3, microstrip feed line 4, conduction band 5, grid seam 6, electric capacity 7,
Part 8, other parts 9, port 10, Part I conduction band 11, Part II conduction band 12 and the single polarization intersected
Grid seam ground capacitive load antenna 13.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment of the present invention is: three polarization slot antennas of grid seam ground capacitive load include that three are mutually perpendicular to
The grid seam ground capacitive load antenna 13 of the single polarization placed；The grid seam ground capacitive load antenna 13 of each single polarization includes being situated between
Matter substrate 1, the metal being arranged on medium substrate 1 ground 2 and the radiation line of rabbet joint 3, microstrip feed line 4；The one of medium substrate 1
Face is metal ground 2, and the another side of medium substrate 1 is the conduction band 5 of microstrip feed line 4；The radiation line of rabbet joint 3 is had on metal ground 2,
The shape of the radiation line of rabbet joint 3 is rectangle, and the radiation line of rabbet joint 3 is positioned at the center on metal ground 2；A plurality of parallel gate seam on metal ground 2
6 grid constituted stitch 6 arrays, and the shape of grid seam 6 is rectangle, and grid seam is positioned at the surrounding of the radiation line of rabbet joint 3, grid seam 6 and spoke
Penetrate the line of rabbet joint 3 to be mutually perpendicular to；The short at one end of grid seam 6；The other end open circuit of grid seam 6, is positioned at the edge of medium substrate 1；
Two terminal shortcircuits of the radiation line of rabbet joint 3；Remove, at the radiation line of rabbet joint 3, the part 8 intersected with microstrip feed line 4, have several electric capacity
7 are connected in parallel across radiating two edges of the line of rabbet joint 3 so that the characteristic impedance step-down of the radiation line of rabbet joint 3；Metal ground 2 is also
The ground plane of described microstrip feed line 4, one end of microstrip feed line 4 is the port 10 of antenna, the conduction band 5 of microstrip feed line 4
The other end stride across the radiation line of rabbet joint 3 stretch a segment length to terminal, the open-end of microstrip feed line 4；Microstrip feed line
Conduction band 5 has two parts to constitute, Part I conduction band 11 be from the port 10 of antenna to it just crossed over radiation the line of rabbet joint 3
Position, the remainder of the conduction band of microstrip feed line is Part II conduction band 12.
Change the length and width of Part II conduction band 12, thus it is possible to vary the operating frequency of antenna, the width of working band
Electrical length with the radiation line of rabbet joint 3.
Change that grid stitch the spacing of the seam of adjacent gate in 6 arrays 6, the width of grid seam 6, grid stitch 6 short-circuit ends from the radiation line of rabbet joint 3
Distance, thus it is possible to vary the operating frequency of antenna, the width of working band and radiation the line of rabbet joint 3 electrical length.
Change the quantity of loading capacitance 7, capacitance and spacing, the characteristic impedance of the radiation line of rabbet joint 3 can be regulated, thus it is possible to vary
The operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint 3.
The electrical length of grid seam 6 should not be taken at 1/4th, to avoid causing resonance radiation, causes cross-polarized rising.
The operating frequency of three polarization slot antennas of grid seam ground capacitive load is mainly determined by the resonant frequency of the radiation line of rabbet joint 3,
But the metal ground size of 2, the conduction band 5 of microstrip feed line 4 are at the radiation position of the line of rabbet joint 3, Part II conduction band 12
The operating frequency of antenna and matching degree can also be adjusted by length and width.Grid seam 6 on metal ground 2 is to radiation
The line of rabbet joint 3 forms periodically loading, makes again to radiate the line of rabbet joint 3 and becomes periodic slow-wave structure, reduces the electricity of antenna
Size；Simultaneously because the direction of grid seam 6 is vertical with the direction of the radiation line of rabbet joint 3, it is suppressed that along the radiation line of rabbet joint on metal ground 2
The electric current in 3 directions, and make the more concentration along the remaining CURRENT DISTRIBUTION radiating the line of rabbet joint 3 direction, thus reduce friendship
The radiation of fork polarization, improves the isolation between antenna port, also reduces the size on metal ground 2, reduces metal ground
The occlusion effect of 2.
In technique, three polarization slot antennas of grid seam ground capacitive load both can use common printed circuit board (PCB) (PCB)
Technique, it would however also be possible to employ the integrated circuit technologies such as LTCC (LTCC) technique or CMOS, Si substrate realize.
Electric capacity 7 can select the patch capacitor 7 of corresponding encapsulation according to operating frequency, and according to the distance of electric capacity 7 two pins electrode,
The width of the selective radiation line of rabbet joint 3.On manufacturing, the grid seam ground capacitive load antenna 13 of three single polarizations can be by card
Groove is mutually perpendicular to be installed together, or is mutually perpendicular to be bonded together by binding agent, or two kinds of methods are used together.
In accordance with the above, the present invention can just be realized.
Claims (4)
1. three polarization slot antennas of a grid seam ground capacitive load, it is characterised in that this antenna includes that three are mutually perpendicular to
Grid seam ground capacitive load antenna (13) of the single polarization placed；Grid seam ground capacitive load antenna (13) of each single polarization
Metal ground (2) including medium substrate (1), being arranged on medium substrate (1) and the radiation line of rabbet joint (3), microstrip feed line
(4)；The one side of medium substrate (1) is metal ground (2), and the another side of medium substrate (1) is microstrip feed line (4)
Conduction band (5)；Having the radiation line of rabbet joint (3) on metal ground (2), the shape of the radiation line of rabbet joint (3) is rectangle, radiates the line of rabbet joint
(3) center of with being positioned at metal (2)；Grid seam (6) battle array that upper a plurality of parallel gate seam (6) of metal ground (2) is constituted
Row, the shape of grid seam (6) is rectangle, and grid seam is positioned at the surrounding of the radiation line of rabbet joint (3), grid seam (6) and the radiation line of rabbet joint
(3) it is mutually perpendicular to；The short at one end of grid seam (6)；The other end open circuit of grid seam (6), is positioned at medium substrate (1)
Edge；Two terminal shortcircuits of the radiation line of rabbet joint (3)；Intersect at the radiation line of rabbet joint (3) removing and microstrip feed line (4)
Partly (8), several electric capacity (7) is had to be connected in parallel across radiating two edges of the line of rabbet joint (3) so that the radiation line of rabbet joint (3)
Characteristic impedance step-down；Metal ground (2) is also the ground plane of described microstrip feed line (4), microstrip feed line (4)
One end is the port (10) of antenna, and the other end of the conduction band (5) of microstrip feed line (4) strides across the radiation line of rabbet joint (3) and stretches
Open up a segment length to terminal, the open-end of microstrip feed line (4)；The conduction band (5) of microstrip feed line has two parts to constitute,
Part I conduction band (11) is the position that the port (10) from antenna has just crossed over the radiation line of rabbet joint (3) to it, micro-strip
The remainder of the conduction band of feeder line is Part II conduction band (12).
Three polarization slot antennas of a kind of grid the most according to claim 1 seam ground capacitive load, it is characterised in that change
Become the length and width of Part II conduction band (12), thus it is possible to vary the operating frequency of antenna, the width of working band and spoke
Penetrate the electrical length of the line of rabbet joint (3).
Three polarization slot antennas of a kind of grid the most according to claim 1 seam ground capacitive load, it is characterised in that change
Become the adjacent gate seam spacing of (6) in grid seam (6) array, the grid seam width of (6), grid seam (6) short-circuit end from radiation
The distance of the line of rabbet joint (3), thus it is possible to vary the electricity of the operating frequency of antenna, the width of working band and the radiation line of rabbet joint (3) is long
Degree.
Three polarization slot antennas of a kind of grid the most according to claim 1 seam ground capacitive load, it is characterised in that change
Become quantity, capacitance and the spacing of loading capacitance (7), the characteristic impedance of the radiation line of rabbet joint (3) can be regulated, thus it is possible to vary
The operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218454.5A CN105896048A (en) | 2016-04-08 | 2016-04-08 | Three-polarization slot antenna with gate gap ground capacitor loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218454.5A CN105896048A (en) | 2016-04-08 | 2016-04-08 | Three-polarization slot antenna with gate gap ground capacitor loading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896048A true CN105896048A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218454.5A Pending CN105896048A (en) | 2016-04-08 | 2016-04-08 | Three-polarization slot antenna with gate gap ground capacitor loading |
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Cited By (2)
| 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 |
| US10651565B1 (en) | 2019-04-29 | 2020-05-12 | Microsoft Technology Licensing, Llc | Antenna polarization diversity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | Fractus, S.A. | Slotted Ground-Plane Used as a Slot Antenna or Used For a Pifa Antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
-
2016
- 2016-04-08 CN CN201610218454.5A patent/CN105896048A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | Fractus, S.A. | Slotted Ground-Plane Used as a Slot Antenna or Used For a Pifa Antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
Non-Patent Citations (1)
| Title |
|---|
| LEILEI LIU ET AL: "Low Mutual Coupling Tri-Polarized MIMO Slot Antennas", 《PROCEEDINGS OF 2014 3RD ASIA-PACIFIC CONFERENCE ON ANTENNAS AND PROPAGATION》 * |
Cited By (2)
| 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 |
| US10651565B1 (en) | 2019-04-29 | 2020-05-12 | Microsoft Technology Licensing, Llc | Antenna polarization diversity |
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Application publication date: 20160824 |
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