CN105742800A - Coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna - Google Patents
Coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna Download PDFInfo
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- CN105742800A CN105742800A CN201610216746.5A CN201610216746A CN105742800A CN 105742800 A CN105742800 A CN 105742800A CN 201610216746 A CN201610216746 A CN 201610216746A CN 105742800 A CN105742800 A CN 105742800A
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- rabbet joint
- line
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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
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- 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
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Abstract
The invention discloses a coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna, and relates to a slot antenna. The antenna comprises three perpendicularly-placed single-polarized antennas (13), wherein each antenna (13) 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) is formed in the metal ground (2); the two ends (6) of the radiation slot slit (3) are in short circuit; a low resistance slot slit (8) formed by two rows of metalized via holes (7) is formed in the middle of the radiation slot slit (3) in an array manner; a high resistance slot slit (9) is formed in the rest part of the radiation slot slit (3); the outer conductor (5) of the coaxial feeder line (4) is connected with the metal ground (2); and the 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 isolation among ports can be improved.
Description
Technical field
The present invention relates to a kind of slot antenna, three polarization slot antennas of especially a kind of coaxial feed 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, 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.Multipolarization MIMO can effectively improve spectrum efficiency and channel capacity, in order to MIMO technology may apply to the terminal that volume is little, it is necessary to the not like-polarized co-located placement of antenna.The radiation of antenna can be produced occlusion effect by bigger metal ground, slot antenna is made to be not suitable for co-located multiple-input and multiple-output (MIMO) application, when using in particular as multi-polarization antenna, the isolation caused between the cross polarization variation of antenna, antenna port is deteriorated by big metal ground, 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 three of a kind of coaxial feed metallic vias Stepped Impedance polarization slot antenna, 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 have and suppress cross polarization, improvement to isolate, reduce the effect blocked.
Technical scheme: three polarization slot antennas of the coaxial feed metallic vias Stepped Impedance of the present invention include the metallic vias Stepped Impedance antenna of three single polarizations being mutually perpendicular to placement；The metal that the metallic vias Stepped Impedance antenna of each single polarization includes medium substrate, be 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；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 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.
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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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.
In metallization arrays of vias, the spacing of adjacent metal via is less than 1/10th wavelength.
The operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of three polarization slot antennas of coaxial feed 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, 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, improve isolation and reduce the occlusion effect 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.
Beneficial effect: three polarization slot antennas of the coaxial feed metallic vias Stepped Impedance of the present invention provide 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 of suppression antenna, improve and isolate between port, and reduce the effect blocked on metal ground.
Accompanying drawing explanation
Fig. 1 is three polarization slot antenna overall structure schematic diagrams of coaxial feed metallic vias Stepped Impedance.
Fig. 2 be coaxial feed metallic vias Stepped Impedance three polarization slot antennas in the structural representation of metallic vias Stepped Impedance antenna of single polarization.
Figure has: the metallic vias Stepped Impedance antenna 13 of medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coaxial feeder 4, outer conductor 5, two ends 6, metallization via 7, the low-resistance line of rabbet joint 8, the high resistant line of rabbet joint 9, port 10, edge 11, inner wire 12 and single polarization.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment of the present invention is: three polarization slot antennas of coaxial feed metallic vias Stepped Impedance include the metallic vias Stepped Impedance antenna 13 of three single polarizations being mutually perpendicular to placement；The metallic vias Stepped Impedance antenna 13 of each single polarization includes medium substrate 1, be arranged on medium substrate 1 metal 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；Two ends 6 short circuit 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 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.
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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
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.
In metallization via 7 array, the spacing of adjacent metal via 7 is less than 1/10th wavelength.
The operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of three polarization slot antennas of coaxial feed 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, 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, improve isolation and reduce the occlusion effect 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.
In technique, three polarization slot antennas of coaxial feed metallic vias 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 metallization via 7 can be hollow metal through hole can also be solid metal hole, and the shape of metal throuth hole can be circular, it is also possible to is square or other shapes.On manufacturing, the metallic vias Stepped Impedance antenna 13 of three single polarizations can be mutually perpendicular to by draw-in groove and be installed together, or is mutually perpendicular to by binding agent and is bonded together, or two kinds of methods use together.
In accordance with the above, the present invention can just be realized.
Claims (5)
1. three polarization slot antennas of a coaxial feed metallic vias Stepped Impedance, it is characterised in that this antenna includes metallic vias Stepped Impedance antenna (13) of three single polarizations being mutually perpendicular to placement；Metallic vias Stepped Impedance antenna (13) of each single polarization includes medium substrate (1), be arranged on medium substrate (1) metal ground (2) 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)；Two ends (6) short circuit 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) 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；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 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. three polarization slot antennas of a kind of coaxial feed metallic vias Stepped Impedance according to claim 1, 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. three polarization slot antennas of a kind of coaxial feed metallic vias Stepped Impedance according to claim 1, 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. three polarization slot antennas of a kind of coaxial feed metallic vias Stepped Impedance according to claim 1, it is characterized in that 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 the operating frequency of the low frequency operation frequency band of antenna and the operating frequency of high-frequency work frequency band.
5. three polarization slot antennas of a kind of coaxial feed metallic vias Stepped Impedance according to claim 1, 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 |
|---|---|---|---|
| CN201610216746.5A CN105742800A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216746.5A CN105742800A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna |
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| CN105742800A true CN105742800A (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216746.5A Pending CN105742800A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed metal via hole stepped impedance type tri-polarization slot-slit antenna |
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Citations (2)
| 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 |
-
2016
- 2016-04-08 CN CN201610216746.5A patent/CN105742800A/en active Pending
Patent Citations (2)
| 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 |
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: 20160706 |