CN105811096A - Gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna - Google Patents
Gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna Download PDFInfo
- Publication number
- CN105811096A CN105811096A CN201610218787.8A CN201610218787A CN105811096A CN 105811096 A CN105811096 A CN 105811096A CN 201610218787 A CN201610218787 A CN 201610218787A CN 105811096 A CN105811096 A CN 105811096A
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- rabbet joint
- line
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- antenna
- 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
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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
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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
- 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
Abstract
The invention discloses a gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna, and relates to a slot antenna. The antenna comprises a dielectric substrate (1), and a metal ground (2) and a radiation slot slit (3) on the dielectric substrate (1), and a coaxial feeder line (4); the radiation slot slit (3) and multiple parallel gate slits (6) are formed on the metal ground (2); the two ends of the radiation slot slit (3) are in short circuit; a low resistance slot slit (8) which is formed by two metalized side walls (7) is arranged in the middle part of the radiation slot slit (3); a high resistance slot slit (9) is formed in the rest part of the radiation slot slit (3); an outer conductor (5) of the coaxial feeder line (4) is connected with the metal ground (2); and an inner conductor (12) at the tail end of the coaxial feeder line (4) crosses over the high resistance slot slit (9), and is connected with the metal ground (2) on the edge (11) of the high resistance slot slit (9). The antenna is in multi-band operation, so that the antenna dimensions, and the conditions of crossed polarization and shielding can be reduced, and the isolation among ports can be improved.
Description
Technical field
The present invention relates to a kind of slot antenna, the slot antenna of especially a kind of grid seam ground coaxial feed low-resistance sidewall 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, big 1/2nd wavelength of length of the length ratio 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 that the cross polarization of antenna is deteriorated, and these all will cause the decline of spectrum efficiency and channel capacity.The impedance of the line of rabbet joint is very big simultaneously, and the impedance matching also making slot antenna feeding transmission line is relatively difficult.The simultaneously development of modern communications also requires that antenna can multiband operation and two frequency bands can regulate respectively.
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 coaxial feed low-resistance sidewall Stepped Impedance, this antenna has been possible not only to multiple working band, and multiple frequency band can regulate respectively；This antenna can reduce the length of the radiation line of rabbet joint and the area on metal ground, and has the cross-polarized effect of suppression.
Technical scheme: the slot antenna of the grid seam ground coaxial feed low-resistance sidewall Stepped Impedance of the present invention includes medium substrate, the metal that is arranged on medium substrate and the radiation line of rabbet joint, coaxial feeder；The one side of medium substrate is metal ground, is affixed the outer conductor of coaxial feeder 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 the center on metal ground；The metal grid seam 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 metalized sidewall 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；Metalized sidewall passes through medium substrate, one with metal be connected, other end is at the another side of medium substrate；One end of coaxial feeder is the port of antenna, and the inner wire of the coaxial feeder 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
Change grid seam in adjacent gate seam spacing, grid seam width, grid seam short-circuit end from radiation the line of rabbet joint distance, thus it is possible to vary the operating frequency of antenna, working band width and radiation the line of rabbet joint electrical length.
Change the width of the radiation line of rabbet joint, it is possible to regulate the characteristic impedance of the low-resistance line of rabbet joint and the high resistant line of rabbet joint, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then change the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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 coaxial feed low-resistance sidewall 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, coaxial feeder inner wire are connected with the radiation line of rabbet joint.Owing to the radiation existing low-resistance line of rabbet joint of the 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, and it is also possible that antenna has multiple working band, and change relative length and the impedance of the low-resistance line of rabbet joint and the high resistant line of rabbet joint, it is possible to adjust the position of two working bands respectively.The radiation line of rabbet joint is formed periodic loading by metal grid seam on the ground, makes again the radiation line of rabbet joint become 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 making the more concentration along the remaining CURRENT DISTRIBUTION radiating line of rabbet joint direction, thus reducing cross-polarized radiation, also reducing the size on metal ground.
Beneficial effect: the slot antenna of the grid seam ground coaxial feed low-resistance sidewall 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 suppressing antenna.
Accompanying drawing explanation
Fig. 1 is the slot antenna structural representation of grid seam ground coaxial feed low-resistance sidewall Stepped Impedance.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coaxial feeder 4, outer conductor 5, grid seam 6, metalized sidewall 7, the low-resistance line of rabbet joint 8, the high resistant line of rabbet joint 9, port 10, edge 11 and inner wire 12.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment of the present invention is: the slot antenna of grid seam ground coaxial feed low-resistance sidewall 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, coaxial feeder 4；The one side of medium substrate 1 is metal ground 2, and the outer conductor 5 of coaxial feeder 4 is affixed with metal ground 2 and is connected；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；The grid seam 6 of a plurality of parallel gate seam 6 composition on metal ground 2, 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 metalized sidewall 7 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；Metalized sidewall 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 coaxial feeder 4 is the port 10 of antenna, and the inner wire 12 of coaxial feeder 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
Change grid seam 6 in adjacent gate seam 6 spacing, grid seam 6 width, grid stitch 6 short-circuit ends from radiation the line of rabbet joint 3 distance, thus it is possible to vary the operating frequency of antenna, working band width and radiation the line of rabbet joint 3 electrical length.
Change the width of the radiation line of rabbet joint 3, it is possible to regulate the characteristic impedance of the low-resistance line of rabbet joint 8 and the high resistant line of rabbet joint 9, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then change the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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 coaxial feed low-resistance sidewall 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, coaxial feeder 4 inner wire 12 are connected with the radiation line of rabbet joint 3.Owing to the radiation existing low-resistance line of rabbet joint 8 of the line of rabbet joint 3 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, and it is also possible 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, it is possible to adjust the position of two working bands respectively.The radiation line of rabbet joint 3 is formed periodic loading by the grid seam 6 on metal ground 2, makes again the radiation line of rabbet joint 3 become 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 making the more concentration along the remaining CURRENT DISTRIBUTION radiating the line of rabbet joint 3 direction, thus reducing cross-polarized radiation, also reducing the size on metal ground 2.
In technique, the slot antenna of grid seam ground coaxial feed low-resistance sidewall Stepped Impedance both can adopt 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 metalized sidewall 7 can be hollow metal sidewall can also be solid metal sidewall.
In accordance with the above, the present invention can just be realized.
Claims (5)
1. the slot antenna of grid seam ground coaxial feed low-resistance sidewall 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), coaxial feeder (4)；The one side of medium substrate (1) is metal ground (2), and the outer conductor (5) of coaxial feeder (4) is affixed with metal ground (2) and is connected；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) 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 metalized sidewall (7) 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) and the low-resistance line of rabbet joint (8) constitute the Stepped Impedance radiation line of rabbet joint (3) together, produce a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metalized sidewall (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 coaxial feeder (4) is the port (10) of antenna, the inner wire (12) of coaxial feeder (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.
2. the slot antenna of a kind of grid according to claim 1 seam ground coaxial feed low-resistance sidewall Stepped Impedance, it is characterized in that changing 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
3. the slot antenna of a kind of grid according to claim 1 seam ground coaxial feed low-resistance sidewall 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
4. the slot antenna of a kind of grid according to claim 1 seam ground coaxial feed low-resistance sidewall Stepped Impedance, it is characterized in that change grid seam (6) in adjacent gate seam the spacing of (6), grid seam the width of (6), grid seam (6) short-circuit end from radiation the line of rabbet joint (3) distance, thus it is possible to vary the operating frequency of antenna, working band width and radiation the line of rabbet joint (3) electrical length.
5. the slot antenna of a kind of grid according to claim 1 seam ground coaxial feed low-resistance sidewall 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218787.8A CN105811096A (en) | 2016-04-08 | 2016-04-08 | Gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218787.8A CN105811096A (en) | 2016-04-08 | 2016-04-08 | Gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna |
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| Publication Number | Publication Date |
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| CN105811096A true CN105811096A (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218787.8A Pending CN105811096A (en) | 2016-04-08 | 2016-04-08 | Gate slot ground coaxial feed low-resistance side wall phase-step impedance type slot-slit antenna |
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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 |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
| 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 CN201610218787.8A patent/CN105811096A/en active Pending
Patent 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 |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
| CN104134871A (en) * | 2014-07-22 | 2014-11-05 | 南京邮电大学 | High-isolation semi-groove slot antenna array |
Non-Patent Citations (2)
| Title |
|---|
| LEILEI LIU等: ""Low mutual coupling tri-polarized MIMO slot antennas"", 《2014 3RD ASIA-PACIFIC CONFERENCE ON ANTENNAS AND PROPAGATION》 * |
| SHUNLI LI等: ""Postwall Slotline and Its Application in Design of Short-Pulse Tapered Slot Antennas"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
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Application publication date: 20160727 |
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