CN105846104A - Grid seam earth coaxial feed capacitance loaded half-slot antenna - Google Patents
Grid seam earth coaxial feed capacitance loaded half-slot antenna Download PDFInfo
- Publication number
- CN105846104A CN105846104A CN201610218789.7A CN201610218789A CN105846104A CN 105846104 A CN105846104 A CN 105846104A CN 201610218789 A CN201610218789 A CN 201610218789A CN 105846104 A CN105846104 A CN 105846104A
- Authority
- CN
- China
- Prior art keywords
- rabbet joint
- seam
- radiation line
- grid
- line
- 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.)
- Pending
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Classifications
-
- 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
- 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
- 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
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
Abstract
The invention discloses a grid seam earth coaxial feed capacitance loaded half-slot antenna which comprises a medium substrate (1), a metal ground (2) and a radiation slot seam (3) on the medium substrate (1), and a coaxial feed line (4). The radiation slot seam (3) and a plurality of parallel grid seams (6) are arranged on the metal ground (2). One end of the radiation slot seam (3) is short circuited while the other end (6) is open circuited. A plurality of parallel capacitors (7) is arranged at two edges of the radiation slot seam (3) and crosses the edges of the radiation slot seam (3). One end of the co-planar waveguide feed line (4) is an antenna port (8) while the conductor (9) at the other end crosses the radiation slot seam (3) and is connected to the metal ground (2) from the edge (10) of the radiation slot (3). With a reduced size, the antenna achieves cross polarization. Well blocked, an improved isolation effect can be achieved as well.
Description
Technical field
The present invention relates to a kind of slot antenna, half slot antenna of a kind of grid seam ground coaxial feed 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.Bigger metal ground can make slot antenna be not suitable for multiple-input and multiple-output (MIMO) application, causes antenna
Cross polarization is deteriorated, and 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
The impedance matching obtaining slot antenna feeding transmission line is relatively difficult.
Summary of the invention
Technical problem: the purpose of the present invention is to propose to half slot antenna of a kind of grid seam ground coaxial feed capacitive load, this antenna can
To reduce length and the area on metal ground of the radiation line of rabbet joint, and there is the cross-polarized effect of suppression.
Technical scheme: half slot antenna of the grid seam ground coaxial feed capacitive load of the present invention includes medium substrate, is arranged on Jie
Metal ground on matter substrate and the radiation line of rabbet joint, coaxial feeder；The one side of medium substrate is metal ground, and the outer of coaxial feeder is led
It is affixed body and metal and is connected；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 gold
The center in possession；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 spoke
Penetrating the surrounding of the 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, is positioned at
The edge of medium substrate；The short at one end of the radiation line of rabbet joint, the other end is opened a way；Several electric capacity is had to be connected in parallel across radiating the line of rabbet joint
Two edges so that radiation the line of rabbet joint characteristic impedance step-down；One end of coaxial feeder is the port of antenna, coaxial feeder
The inner wire of the other end strides across the radiation line of rabbet joint, radiation the line of rabbet joint edge, with metal be connected.
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, the characteristic impedance of the radiation line of rabbet joint can be regulated, thus it is possible to vary antenna
Operating frequency, the width of working band and radiation the line of rabbet joint electrical length.
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 of half slot antenna of grid seam ground coaxial feed capacitive load
Mainly determined by the resonant frequency of the radiation line of rabbet joint, but the size on metal ground, coaxial feeder inner wire are connected with the radiation line of rabbet joint
Position the operating frequency of antenna and matching degree can also be adjusted.Radius slit is become by metal grid seam on the ground
Periodically load, make again to radiate the line of rabbet joint and become periodic slow-wave structure, reduce the electric size of antenna；Simultaneously by
Vertical with the direction of the radiation line of rabbet joint in the direction of grid seam, it is suppressed that metal is on the ground along the electric current in radiation line of rabbet joint direction, and makes
Along the more concentration of the remaining CURRENT DISTRIBUTION in radiation line of rabbet joint direction, thus cross-polarized radiation must be reduced, also reduce
The size on metal ground.Due to radiation the line of rabbet joint 3 be quarter-wave resonance structure, than usual two terminal shortcircuits two/
The radiation slot length of one wavelength is half as large, and therefore the overall dimensions of antenna reduces the most accordingly, and occlusion effect drops further
Low.
Beneficial effect: half slot antenna of the grid seam ground coaxial feed capacitive load of the present invention provides the benefit that, this antenna can
To reduce the electric size of whole antenna, to realize miniaturization, the most also there is the cross polarization effect of suppression antenna.
Accompanying drawing explanation
Fig. 1 is half slot antenna overall structure schematic diagram of grid seam ground coaxial feed capacitive load.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coaxial feeder 4, outer conductor 5, grid seam 6, electricity
Hold 7, port 8, inner wire 9 and edge 10.
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: grid seam ground coaxial feed capacitive load half slot antenna include medium substrate 1,
The metal ground 2 being arranged on medium substrate 1 and the radiation line of rabbet joint 3, coaxial feeder 4；The one side of medium substrate 1 is metal
Ground 2, the outer conductor 5 of coaxial feeder 4 is affixed with metal ground 2 and is connected；The radiation line of rabbet joint 3, radius is had on metal ground 2
The shape of seam 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 6 composition on metal ground 2
Grid stitch 6 arrays, 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 are 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；Radiation
The short at one end of the line of rabbet joint 3, the other end is opened a way；There is several electric capacity 7 to be connected in parallel across radiating two edges of the line of rabbet joint 3, make
The characteristic impedance step-down of the line of rabbet joint 3 must be radiated；One end of coaxial feeder 4 is the port 8 of antenna, coaxial feeder 4 other end
Inner wire 9 stride across the radiation line of rabbet joint 3, at the edge 10 of the radiation line of rabbet joint 3,2 be connected with metal ground.
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 half slot antenna of grid seam ground coaxial feed capacitive load is mainly determined by the resonant frequency of the radiation line of rabbet joint 3,
But the position that the size on metal ground 2, coaxial feeder inner wire 9 are connected with the radiation line of rabbet joint 3 can also be to the work of antenna
Frequency and matching degree are adjusted.Grid seam 6 on metal ground 2 forms periodically loading to the radiation line of rabbet joint 3, makes again
The line of rabbet joint 3 must be radiated and become periodic slow-wave structure, reduce the electric size of antenna；Simultaneously because grid seam 6 direction with
The direction of the radiation line of rabbet joint 3 is vertical, it is suppressed that along the electric current in the radiation line of rabbet joint 3 direction on metal ground 2, and make along radiation
The more concentration of the remaining CURRENT DISTRIBUTION in the line of rabbet joint 3 direction, thus reduce cross-polarized radiation, also reduce metal ground
The size of 2.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, than 1/2nd ripples of usual two terminal shortcircuits
Long radiation slot length is half as large, and therefore the overall dimensions of antenna reduces the most accordingly, and occlusion effect reduces further.
In technique, half slot antenna of grid seam ground coaxial feed 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.
In accordance with the above, the present invention can just be realized.
Claims (3)
1. half slot antenna of grid seam ground coaxial feed capacitive load, it is characterised in that this antenna include medium substrate (1),
Metal ground (2) being arranged on medium substrate (1) and the radiation line of rabbet joint (3), coaxial feeder (4)；Medium substrate (1)
One side be metal ground (2), the outer conductor (5) of coaxial feeder (4) is affixed with metal ground (2) and is connected；Metal ground
(2) having the radiation line of rabbet joint (3) on, the shape of the radiation line of rabbet joint (3) is rectangle, the radiation line of rabbet joint (3) with being positioned at metal (2)
Center；Grid seam (6) array that upper a plurality of parallel gate seam (6) of metal ground (2) is constituted, the shape of grid seam (6) is
Rectangle, grid seam is positioned at the surrounding of the radiation line of rabbet joint (3), and grid seam (6) are mutually perpendicular to the radiation line of rabbet joint (3)；Grid seam (6)
Short at one end；The other end open circuit of grid seam (6), is positioned at the edge of medium substrate (1)；The radiation line of rabbet joint (3)
Short at one end, the other end is opened a way；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 characteristic impedance step-down of the radiation line of rabbet joint (3)；One end of coaxial feeder (4) is the port (8) of antenna, coaxial feeder (4)
The inner wire (9) of the other end strides across the radiation line of rabbet joint (3), at the edge (10) of the radiation line of rabbet joint (3), with metal ground (2)
Connect.
Half slot antenna of a kind of grid the most according to claim 1 seam ground coaxial feed capacitive load, it is characterised in that
Change 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 spoke
Penetrate the distance of the line of rabbet joint (3), thus it is possible to vary the operating frequency of antenna, the width of working band and the electricity of the radiation line of rabbet joint (3)
Length.
Half slot antenna of a kind of grid the most according to claim 1 seam ground coaxial feed capacitive load, it is characterised in that
Change quantity, capacitance and the spacing of loading capacitance (7), the characteristic impedance of the radiation line of rabbet joint (3), Ke Yigai can be regulated
The change of weather operating frequency of line, 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 |
|---|---|---|---|
| CN201610218789.7A CN105846104A (en) | 2016-04-08 | 2016-04-08 | Grid seam earth coaxial feed capacitance loaded half-slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218789.7A CN105846104A (en) | 2016-04-08 | 2016-04-08 | Grid seam earth coaxial feed capacitance loaded half-slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846104A true CN105846104A (en) | 2016-08-10 |
Family
ID=56597276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218789.7A Pending CN105846104A (en) | 2016-04-08 | 2016-04-08 | Grid seam earth coaxial feed capacitance loaded half-slot antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105846104A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006097496A1 (en) * | 2005-03-15 | 2006-09-21 | Fractus, S.A. | Slotted ground-plane used as a slot antenna or used for a pifa antenna |
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| CN104134871A (en) * | 2014-07-22 | 2014-11-05 | 南京邮电大学 | High-isolation semi-groove slot antenna array |
-
2016
- 2016-04-08 CN CN201610218789.7A patent/CN105846104A/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 |
| WO2006097496A1 (en) * | 2005-03-15 | 2006-09-21 | Fractus, S.A. | Slotted ground-plane used as a slot antenna or used for a pifa antenna |
| CN104134871A (en) * | 2014-07-22 | 2014-11-05 | 南京邮电大学 | High-isolation semi-groove slot antenna array |
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| PB01 | Publication | ||
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Application publication date: 20160810 |