CN105826690A - Slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance - Google Patents
Slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance Download PDFInfo
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- CN105826690A CN105826690A CN201610218827.9A CN201610218827A CN105826690A CN 105826690 A CN105826690 A CN 105826690A CN 201610218827 A CN201610218827 A CN 201610218827A CN 105826690 A CN105826690 A CN 105826690A
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- rabbet joint
- line
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- 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
- 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
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Abstract
The invention discloses a slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance. The antenna comprises a medium substrate (1), and metal ground (2), a radiation groove joint (3) and a coplanar waveguide feed line (4), wherein the radiation groove joint (3) and multiple parallel grid slits (6) are disposed in the metal ground (2); the two ends of the radiation groove joint (3) are short-circuited; the central portion of the radiation groove joint (3) is provided with two rows of metal through hole (7) arrays so as to form a low-resistance groove joint (8); the residual portions of the radiation groove joint (3) form high-resistance groove joints (9); and an external conductor (5) of the coplanar waveguide feed line (4) is connected with the metal ground (2), an internal conductor (12) at a tail end crosses the high-resistance groove joints (9) to be connected with the metal ground (2) on an edge (11). The antenna provided by the invention realizes multi-band work, can reduce antenna dimensions, cross polarization and shielding and improves isolation.
Description
Technical field
The present invention relates to a kind of slot antenna, the slot antenna of a kind of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance.
Background technology
Slot antenna is the antithesis antenna of element antenna, has a wide range of applications.But, common slot antenna not only radiates the length of the line of rabbet joint itself 1/2nd wavelength, and radiate and also need to bigger Metal ground around the line of rabbet joint and amass, length 1/2nd wavelength bigger than the length of the line of rabbet joint on usual metal ground, big 1/2nd wavelength of width of the width ratio line of rabbet joint on metal ground.Bigger metal ground can make slot antenna be not suitable for multiple-input and multiple-output (MIMO) application, causes the cross polarization of antenna to be 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, and the impedance matching also making slot antenna feeding transmission line is relatively difficult.The development of modern communications simultaneously also requires that antenna can regulate respectively with multiband operation and two frequency bands.
Summary of the invention
Technical problem: the purpose of the present invention is to propose to the slot antenna of a kind of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance, this antenna has been possible not only to multiple working band, and multiple frequency band can regulate respectively；This antenna can reduce length and the area on metal ground of the radiation line of rabbet joint, and has the cross-polarized effect of suppression.
Technical scheme: the slot antenna of the grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance of the present invention includes medium substrate, the metal that is arranged on medium substrate and the radiation line of rabbet joint, coplanar waveguide feeder line；The one side of medium substrate be metal and coplanar waveguide feeder line, the ground plane of coplanar waveguide feeder line be exactly metal ground；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, and 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；Two terminal shortcircuits of the radiation line of rabbet joint；At radiation line of rabbet joint mid portion, two edges of its line of rabbet joint, there are two rows to metallize arrays of vias so that the characteristic impedance step-down of radiation line of rabbet joint mid portion, form the low-resistance line of rabbet joint；The remainder of the radiation line of rabbet joint is the high resistant line of rabbet joint, and the high resistant line of rabbet joint constitutes the Stepped Impedance radiation line of rabbet joint together with the low-resistance line of rabbet joint, produces a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metallization via pass through medium substrate, one with metal be connected, other end is at the another side of medium substrate；One end of coplanar waveguide feeder line is the port of antenna, and the conductor of the coplanar waveguide feeder line other end strides across the high resistant line of rabbet joint, at the edge of the high resistant line of rabbet joint, with metal be connected.
Change the thickness of medium substrate, pcrmeability and dielectric constant, the high resistant line of rabbet joint and the characteristic impedance of the low-resistance line of rabbet joint can be changed, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Change the length of the low-resistance line of rabbet joint, low-resistance line of rabbet joint position in the radiation line of rabbet joint, the electrical length of the radiation line of rabbet joint can be regulated, to realize antenna miniaturization in various degree, it is also possible to change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Change the spacing of adjacent gate seam in grid slot array, the width of grid seam, grid seam short-circuit end from the distance radiating the line of rabbet joint, 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.
In metallization arrays of vias, change the spacing of adjacent metal via, the characteristic impedance of the low-resistance line of rabbet joint can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Change the width of the radiation line of rabbet joint, the low-resistance line of rabbet joint and the characteristic impedance of the high resistant line of rabbet joint can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
In metallization arrays of vias, the spacing of adjacent metal via is less than 1/10th wavelength.
The electrical length of grid seam should not be taken at 1/4th, to avoid causing resonance radiation, causes cross-polarized rising.
The operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of the slot antenna of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance are mainly determined by the resonant frequency of the radiation line of rabbet joint, but the operating frequency of antenna and matching degree can also be adjusted by the position that the size on metal ground, coplanar waveguide feeder line conductor are connected with the radiation line of rabbet joint.Owing to the radiation line of rabbet joint existing low-resistance line of rabbet joint has again the high resistant line of rabbet joint, constitute the radiation line of rabbet joint of Stepped Impedance, not only make antenna miniaturization, reduce cross polarization, also reduce the size on metal ground, but also so that antenna has multiple working band, and change the low-resistance line of rabbet joint and the relative length of the high resistant line of rabbet joint and impedance, the position of two working bands can be adjusted respectively.Metal grid seam on the ground becomes periodically loading to radius slit, makes again to radiate the line of rabbet joint and becomes periodic slow-wave structure, further reduces the electric size of antenna；Simultaneously because the direction of grid seam is vertical with the direction of the radiation line of rabbet joint, inhibit metal on the ground along the electric current in radiation line of rabbet joint direction, and make the more concentration along the remaining CURRENT DISTRIBUTION radiating line of rabbet joint direction, thus reduce cross-polarized radiation, also reduce the size on metal ground.
Beneficial effect: the slot antenna of the grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance of the present invention provides the benefit that, this antenna can reduce the electric size of whole antenna, realize miniaturization, this antenna has been possible not only to multiple frequency band simultaneously, and multiple frequency band can regulate respectively, also there is the cross polarization effect of suppression antenna.
Accompanying drawing explanation
Fig. 1 is the slot antenna structural representation of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance.
Figure has: the grid seam ground metallic vias Stepped Impedance antenna 13 of medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coplanar waveguide feeder line 4, ground plane 5, grid seam 6, metallization via 7, the low-resistance line of rabbet joint 8, the high resistant line of rabbet joint 9, port 10, edge 11, conductor 12 and single polarization.
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: the slot antenna of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance includes medium substrate 1, the metal that is arranged on medium substrate 1 ground 2 and the radiation line of rabbet joint 3, coplanar waveguide feeder line 4；The one side of medium substrate 1 is metal ground 2 and coplanar waveguide feeder line 4, and the ground plane 5 of coplanar waveguide feeder line 4 is exactly metal ground 2；Having the radiation line of rabbet joint 3 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；On metal ground 2, the grid of a plurality of parallel gate seam 6 composition 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, and grid seam 6 is mutually perpendicular to the radiation line of rabbet joint 3；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；At the radiation line of rabbet joint 3 mid portion, two edges of its line of rabbet joint, there are two rows to metallize via 7 array so that the characteristic impedance step-down of the radiation line of rabbet joint 3 mid portion, form the low-resistance line of rabbet joint 8；The remainder of the radiation line of rabbet joint 7 is the high resistant line of rabbet joint 9, and the high resistant line of rabbet joint 9 constitutes Stepped Impedance together with the low-resistance line of rabbet joint 8 and radiates the line of rabbet joint 3, produces a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metallization via 7 passes through medium substrate 1, and one is connected with metal ground 2, and other end is at the another side of medium substrate 1；One end of coplanar waveguide feeder line 4 is the port 10 of antenna, and the conductor 12 of coplanar waveguide feeder line 4 other end strides across the high resistant line of rabbet joint 9, at the edge 11 of the high resistant line of rabbet joint 9, is connected with metal ground 2.
Change the thickness of medium substrate 1, pcrmeability and dielectric constant, the high resistant line of rabbet joint 9 and the characteristic impedance of the low-resistance line of rabbet joint 8 can be changed, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Change the length of the low-resistance line of rabbet joint 8, the low-resistance line of rabbet joint 8 position in the radiation line of rabbet joint 3, the electrical length of the radiation line of rabbet joint 3 can be regulated, to realize antenna miniaturization in various degree, it is also possible to change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
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 distance from the radiation line of rabbet joint 3, 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.
In metallization via 7 array, change the spacing of adjacent metal via 7, the characteristic impedance of the low-resistance line of rabbet joint 8 can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Change the width of the radiation line of rabbet joint 3, the low-resistance line of rabbet joint 8 and the characteristic impedance of the high resistant line of rabbet joint 9 can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
In metallization via 7 array, the spacing of adjacent metal via 7 is less than 1/10th wavelength.
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 low frequency operation frequency band and the operating frequency of high-frequency work frequency band of the slot antenna of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance are mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but the operating frequency of antenna and matching degree can also be adjusted by the position that the size on metal ground 2, coplanar waveguide feeder line 4 conductor 12 are connected with the radiation line of rabbet joint 3.Owing to the radiation line of rabbet joint 3 existing low-resistance line of rabbet joint 8 has again the high resistant line of rabbet joint 9, constitute the radiation line of rabbet joint 3 of Stepped Impedance, not only make antenna miniaturization, reduce cross polarization, also reduce the size on metal ground 2, but also so that antenna has multiple working band, and change the low-resistance line of rabbet joint 8 and the relative length of the high resistant line of rabbet joint 9, position and impedance, the position of two working bands can be adjusted respectively.Grid seam 6 on metal ground 2 forms periodically loading to the radiation line of rabbet joint 3, makes again to radiate the line of rabbet joint 3 and becomes periodic slow-wave structure, further reduces the electric size of antenna；Simultaneously because the direction of grid seam 6 is vertical with the direction of the radiation line of rabbet joint 3, inhibit the electric current along the radiation line of rabbet joint 3 direction on metal ground 2, and make the more concentration along the remaining CURRENT DISTRIBUTION radiating the line of rabbet joint 3 direction, thus reduce cross-polarized radiation, also reduce the size on metal ground 2.
In technique, the slot antenna of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance 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.Wherein metallization via 7 can be hollow metal through hole can also be solid metal hole, the shape of metal throuth hole can be circular, it is also possible to is square or other shapes.
In accordance with the above, the present invention can just be realized.
Claims (6)
1. the slot antenna of grid seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterised in that this antenna includes medium substrate (1), metal ground (2) that is arranged on medium substrate (1) and radiate the line of rabbet joint (3), coplanar waveguide feeder line (4)；The one side of medium substrate (1) is metal ground (2) and coplanar waveguide feeder line (4), and the ground plane (5) of coplanar waveguide feeder line (4) is exactly metal ground (2)；Having the radiation line of rabbet joint (3) on metal ground (2), the shape of the radiation line of rabbet joint (3) is rectangle, the center of the radiation line of rabbet joint (3) with being positioned at metal (2)；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)；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)；At the radiation line of rabbet joint (3) mid portion, two edges of its line of rabbet joint, there are two rows to metallize via (7) array so that the characteristic impedance step-down of the radiation line of rabbet joint (3) mid portion, form the low-resistance line of rabbet joint (8)；The remainder of the radiation line of rabbet joint (3) is the high resistant line of rabbet joint (9), the high resistant line of rabbet joint (9) constitutes the Stepped Impedance radiation line of rabbet joint (3) together with the low-resistance line of rabbet joint (8), produces a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Medium substrate (1) is passed through in metallization via (7), and one is connected with metal ground (2), and other end is at the another side of medium substrate (1)；One end of coplanar waveguide feeder line (4) is the port (10) of antenna, the conductor (12) of coplanar waveguide feeder line (4) other end strides across the high resistant line of rabbet joint (9), at the edge (11) of the high resistant line of rabbet joint (9), with metal (2) be connected.
The slot antenna of a kind of grid the most according to claim 1 seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterized in that changing thickness, pcrmeability and the dielectric constant of medium substrate (1), the high resistant line of rabbet joint (9) and the characteristic impedance of the low-resistance line of rabbet joint (8) can be changed, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
The slot antenna of a kind of grid the most according to claim 1 seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterized in that changing the length of the low-resistance line of rabbet joint (8), the low-resistance line of rabbet joint (8) position in the radiation line of rabbet joint (3), the electrical length of the radiation line of rabbet joint (3) can be regulated, to realize antenna miniaturization in various degree, it is also possible to change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
The slot antenna of a kind of grid the most according to claim 1 seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterized in that changing the adjacent gate seam spacing of (6) in grid seam (6) array, grid stitch the width of (6), grid stitch (6) short-circuit end distance from the radiation line of rabbet joint (3), 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 slot antenna of a kind of grid the most according to claim 1 seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterized in that metallizing in via (7) array, change the spacing of adjacent metal via (7), the characteristic impedance of the low-resistance line of rabbet joint (8) can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
The slot antenna of a kind of grid the most according to claim 1 seam ground coplanar wave guide feedback metallic vias Stepped Impedance, it is characterized in that changing the width of the radiation line of rabbet joint (3), the low-resistance line of rabbet joint (8) and the characteristic impedance of the high resistant line of rabbet joint (9) can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610218827.9A CN105826690A (en) | 2016-04-08 | 2016-04-08 | Slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610218827.9A CN105826690A (en) | 2016-04-08 | 2016-04-08 | Slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance |
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| CN105826690A true CN105826690A (en) | 2016-08-03 |
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| CN201610218827.9A Pending CN105826690A (en) | 2016-04-08 | 2016-04-08 | Slot antenna with grid slit earth coplanar waveguide feed metal through hole step impedance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110112568A (en) * | 2019-06-06 | 2019-08-09 | 中电国基南方有限公司 | A kind of surface isolator towards the application of big array millimeter-wave systems |
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Application publication date: 20160803 |