CN105680173A - Coaxial feed slot antenna with metal through holes of step impedance - Google Patents
Coaxial feed slot antenna with metal through holes of step impedance Download PDFInfo
- Publication number
- CN105680173A CN105680173A CN201610216597.2A CN201610216597A CN105680173A CN 105680173 A CN105680173 A CN 105680173A CN 201610216597 A CN201610216597 A CN 201610216597A CN 105680173 A CN105680173 A CN 105680173A
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- Prior art keywords
- rabbet joint
- line
- low
- frequency
- antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
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Abstract
The invention relates to a coaxial feed slot antenna with metal through holes of step impedance. The antenna comprises a dielectric substrate (1), a metal ground (2) on the dielectric substrate (1), a radiation slot (3) and a coaxial feed line (4); the radiation slot (3) is arranged in the metal ground (2); the two ends of the radiation slot (3) are shorted; two rows of metal through hole (7) arrays in the middle portion of the radiation slot (3) for a low-resistance slot (8); residual part of the radiation slot (3) is a high-resistance slot (9); and an outer conductor (5) of the coaxial feed line (4) is connected with the metal ground (2), and an internal conductor (12) at the tail end of the coaxial feed line (4) is connected with the metal ground (2) by crossing edges (11) of the high-resistance slot (9). The antenna works in a multiband manner, the size of the antenna is reduced, cross polarization and shielding are realized, and isolation is improved.
Description
Technical field
The present invention relates to a kind of slot antenna, especially a kind of coaxial feed electric metal crosses the slot antenna of hole step impedance.
Background technology
Slot antenna is the antithesis antenna of oscillator antenna, has a wide range of applications. But, the length that common slot antenna not only radiates the line of rabbet joint itself to be had 1/2nd wavelength, and radiate and around the line of rabbet joint, also need bigger metal ground area, 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 the cross polarization of antenna to be deteriorated, and these all will cause the decline of spectrum effectiveness and channel capacity. The impedance of the line of rabbet joint is very big simultaneously, also makes the impedance matching of slot antenna feed transmission line more difficult. The simultaneously development of modern communications also requires that antenna can multiband work and two frequency bands can regulate respectively.
Summary of the invention
Technical problem: it is an object of the invention to propose the slot antenna that a kind of coaxial feed electric metal crosses hole step impedance, this antenna has been possible not only to multiple work frequency 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 that the coaxial feed electric metal of the present invention crosses hole step impedance comprises medium substrate, the metal that is arranged on medium substrate with the radiation line of rabbet joint, coaxial supply line; The one side of medium substrate is metal ground, is affixed the outer conductor of coaxial supply line 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 middle portion, two edges of its line of rabbet joint, have two rows to metallize arrays of vias so that the natural impedance of radiation line of rabbet joint middle portion becomes low, forms the low-resistance line of rabbet joint; The rest part of the radiation line of rabbet joint is the high resistance line of rabbet joint, and the high resistance line of rabbet joint forms the step impedance radiation line of rabbet joint together with the low-resistance line of rabbet joint, produces the lower low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency; Medium substrate is passed through in hole of metallizing, one with metal be connected, other end is at the another side of medium substrate; One end of coaxial supply line is the port of antenna, and the interior conductor of the coaxial supply line the other end strides across the high resistance line of rabbet joint, hinders the edge of the line of rabbet joint at height, with metal be connected.
Change the thickness of medium substrate, magnetic permeability and specific inductivity, the natural impedance of the high resistance line of rabbet joint and the low-resistance line of rabbet joint can be changed, change the high low resistance ratio of the step impedance radiation line of rabbet joint, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Change the length of the low-resistance line of rabbet joint, the 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 low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
In metallization arrays of vias, change the spacing that adjacent metal crosses hole, the natural impedance of the low-resistance line of rabbet joint can be regulated, change the high low resistance ratio of the step impedance radiation line of rabbet joint, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Change the width of the radiation line of rabbet joint, it is possible to regulate the low-resistance line of rabbet joint and the natural impedance of the high resistance line of rabbet joint, change the high low resistance ratio of the step impedance radiation line of rabbet joint, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
In metallization arrays of vias, the spacing that adjacent metal crosses hole is less than 1/10th wavelength.
Coaxial feed electric metal crosses the operating frequency of the low frequency operation frequency band of the slot antenna of hole step impedance and the operating frequency of high-frequency work frequency band is determined primarily of the resonant frequency radiating the line of rabbet joint, but the operating frequency of antenna and matching degree can also be regulated by the position that in the size on metal ground, coaxial supply line, conductor is 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 resistance line of rabbet joint, constitute the radiation line of rabbet joint of step impedance, not only make antenna miniaturization, reduce cross polarization, also reduce the size on metal ground, but also so that antenna has multiple work frequency band, and the relative length of the low-resistance line of rabbet joint with the high resistance line of rabbet joint and impedance can be changed, it is possible to adjust the position of two work frequency bands respectively.
Useful effect: the useful effect of the slot antenna that the coaxial feed electric metal of the present invention crosses hole step impedance is, 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 that coaxial feed electric metal crosses hole step impedance.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coaxial supply line 4, outer conductor 5, two ends 6, hole 7 of metallizing, the low-resistance line of rabbet joint 8, the high resistance line of rabbet joint 9, port 10, edge 11 and interior conductor 12.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment of the present invention is: the slot antenna that coaxial feed electric metal crosses hole step impedance comprises medium substrate 1, the metal ground 2 that is arranged on medium substrate 1 and the radiation line of rabbet joint 3, coaxial supply line 4; The one side of medium substrate 1 is metal ground 2, and the outer conductor 5 of coaxial supply line 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 middle portion, two edges of its line of rabbet joint, have two rows to metallize hole 7 array so that the natural impedance of the radiation line of rabbet joint 3 middle portion becomes low, forms the low-resistance line of rabbet joint 8; The rest part of the radiation line of rabbet joint 7 is the high resistance line of rabbet joint 9, and the high resistance line of rabbet joint 9 forms step impedance together with the low-resistance line of rabbet joint 8 and radiates the line of rabbet joint 3, produces the lower 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 hole 7 of metallizing, and one is connected with metal ground 2, and other end is at the another side of medium substrate 1;One end of coaxial supply line 4 is the port 10 of antenna, and the interior conductor 12 of coaxial supply line 4 the other end strides across the high resistance line of rabbet joint 9, hinders the edge 11 of the line of rabbet joint 9 at height, is connected with metal ground 2.
Change the thickness of medium substrate 1, magnetic permeability and specific inductivity, the natural impedance of the high resistance line of rabbet joint 9 and the low-resistance line of rabbet joint 8 can be changed, change the high low resistance ratio of the step impedance radiation line of rabbet joint 3, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work 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 the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Metallized in the array of hole 7, change the spacing that adjacent metal crosses hole 7, the natural impedance of the low-resistance line of rabbet joint 8 can be regulated, change the high low resistance ratio of the step impedance radiation line of rabbet joint 3, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Change the width of the radiation line of rabbet joint 3, it is possible to regulate the low-resistance line of rabbet joint 8 and the natural impedance of the high resistance line of rabbet joint 9, change the high low resistance ratio of the step impedance radiation line of rabbet joint 3, and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Metallizing in the array of hole 7, the spacing that adjacent metal crosses hole 7 is less than 1/10th wavelength.
Coaxial feed electric metal crosses the operating frequency of the low frequency operation frequency band of the slot antenna of hole step impedance and the operating frequency of high-frequency work frequency band is determined primarily of the resonant frequency radiating the line of rabbet joint 3, but the operating frequency of antenna and matching degree can also be regulated by the position that in the size on metal ground 2, coaxial supply line 4, conductor 12 is 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 resistance line of rabbet joint 9, constitute the radiation line of rabbet joint 3 of step impedance, not only make antenna miniaturization, reduce cross polarization, also reduce the size on metal ground 2, but also so that antenna has multiple work frequency band, and the relative length of the low-resistance line of rabbet joint 8 and the high resistance line of rabbet joint 9, position and impedance can be changed, it is possible to adjust the position of two work frequency bands respectively.
In technique, the slot antenna that coaxial feed electric metal crosses hole step impedance both can adopt common printed circuit board (PCB) (PCB) technique, it is also possible to adopts the integrated circuit technology such as LTCC (LTCC) technique or CMOS, Si substrate to realize. Hole 7 of wherein metallizing can be hollow metal through hole can also be solid metal hole, and the shape of metal through hole can be circular, it is also possible to is square or other shapes.
According to the above, the present invention just can be realized.
Claims (5)
1. a coaxial feed electric metal crosses the slot antenna of hole step impedance, it is characterised in that this antenna comprises medium substrate (1), metal ground (2) on (1) that is arranged on medium substrate and radiate the line of rabbet joint (3), coaxial supply line (4); The one side of medium substrate (1) is metal ground (2), and the outer conductor (5) of coaxial supply line (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) middle portion, two edges of its line of rabbet joint, have two rows to metallize hole (7) array so that the natural impedance of the radiation line of rabbet joint (3) middle portion becomes low, forms the low-resistance line of rabbet joint (8);The rest part of the radiation line of rabbet joint (3) is the high resistance line of rabbet joint (9), the high resistance line of rabbet joint (9) and the low-resistance line of rabbet joint (8) form step impedance together and radiate the line of rabbet joint (3), produce the lower 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 hole (7) of metallizing, and one is connected with metal ground (2), and other end is at the another side of medium substrate (1); One end of coaxial supply line (4) is the port (10) of antenna, the interior conductor (12) of coaxial supply line (4) the other end strides across the high resistance line of rabbet joint (9), height hinder the line of rabbet joint (9) edge (11), with metal (2) be connected.
2. a kind of coaxial feed electric metal according to claim 1 crosses the slot antenna of hole step impedance, it is characterized in that the thickness of change medium substrate (1), magnetic permeability and specific inductivity, the natural impedance of the high resistance line of rabbet joint (9) and the low-resistance line of rabbet joint (8) can be changed, change the high low resistance ratio of the step impedance radiation line of rabbet joint (3), and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
3. a kind of coaxial feed electric metal according to claim 1 crosses the slot antenna of hole step impedance, it is characterized in that the length of the change 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 low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
4. a kind of coaxial feed electric metal according to claim 1 crosses the slot antenna of hole step impedance, it is characterized in that metallizing in hole (7) array, change the spacing that adjacent metal crosses hole (7), the natural impedance of the low-resistance line of rabbet joint (8) can be regulated, change the high low resistance ratio of the step impedance radiation line of rabbet joint (3), and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
5. a kind of coaxial feed electric metal according to claim 1 crosses the slot antenna of hole step 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 natural impedance of the high resistance line of rabbet joint (9) can be regulated, change the high low resistance ratio of the step impedance radiation line of rabbet joint (3), and then change the operating frequency of low frequency operation frequency band and the operating frequency of high-frequency work frequency band of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216597.2A CN105680173A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed slot antenna with metal through holes of step impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216597.2A CN105680173A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed slot antenna with metal through holes of step impedance |
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| Publication Number | Publication Date |
|---|---|
| CN105680173A true CN105680173A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216597.2A Pending CN105680173A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed slot antenna with metal through holes of step impedance |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036407A (en) * | 2019-12-24 | 2021-06-25 | 上海莫仕连接器有限公司 | Low profile antenna device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | Fractus, S.A. | Slotted Ground-Plane Used as a Slot Antenna or Used For a Pifa Antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
-
2016
- 2016-04-08 CN CN201610216597.2A patent/CN105680173A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | Fractus, S.A. | Slotted Ground-Plane Used as a Slot Antenna or Used For a Pifa Antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
Non-Patent Citations (1)
| Title |
|---|
| SHUNLI LI ET AL: "Postwall Slotline and Its Application in Design of Short-Pulse Tapered Slot Antennas", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036407A (en) * | 2019-12-24 | 2021-06-25 | 上海莫仕连接器有限公司 | Low profile antenna device |
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Application publication date: 20160615 |