CN105896047A - Semi-slot antenna with coplanar waveguide feed metal via hole step impedance - Google Patents
Semi-slot antenna with coplanar waveguide feed metal via hole step impedance Download PDFInfo
- Publication number
- CN105896047A CN105896047A CN201610218451.1A CN201610218451A CN105896047A CN 105896047 A CN105896047 A CN 105896047A CN 201610218451 A CN201610218451 A CN 201610218451A CN 105896047 A CN105896047 A CN 105896047A
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- rabbet joint
- line
- frequency
- antenna
- low
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
Abstract
The invention discloses a semi-slot antenna with coplanar waveguide feed metal via hole step impedance, which relates to a slot antenna. The antenna comprises a dielectric substrate (1), a metal ground (2) and a radiation slot (3) on the dielectric substrate (1) and a coplanar waveguide feed line (4), wherein the metal ground (2) is provided with the radiation slot (3); one end of the radiation slot (3) is short-circuited and the other end (6) is open-circuited; the part, close to the open-circuited end, of the radiation slot (3) is provided with an array of two rows of metal via holes (7) to form a low-impedance slot (8); the rest part of the radiation slot (3) is a high-impedance slot (9); an outer conductor (5) of the coplanar waveguide feed line (4) is connected with the metal ground (2), and the tail inner conductor (12) passes across the high-impedance slot (9) to be connected with the metal ground (2) at the edge (11). The antenna works under multiple frequency bands, the antenna size, cross polarization, and shielding are reduced, and isolation is improved.
Description
Technical field
The present invention relates to a kind of slot antenna, the half of a kind of coplanar wave guide feedback metallic vias Stepped Impedance
Slot antenna.
Background technology
Slot antenna is the antithesis antenna of element antenna, has a wide range of applications.But, common slot antenna
Not only the length of the radiation line of rabbet joint itself to have 1/2nd wavelength, and radiate and also need to bigger gold around the line of rabbet joint
Possession area, length 1/2nd wavelength bigger than the length of the line of rabbet joint on usual metal ground, the width ratio groove on metal ground
Big 1/2nd wavelength of width of seam.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 spectrum efficiency and channel capacity
Decline.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 half groove of a kind of coplanar wave guide feedback metallic vias Stepped Impedance
Antenna, this antenna has been possible not only to multiple working band, and multiple frequency band can regulate respectively；This antenna can
To reduce length and the area on metal ground of the radiation line of rabbet joint, and there is the cross-polarized effect of suppression.
Technical scheme: half slot antenna of the coplanar wave guide feedback metallic vias Stepped Impedance of the present invention includes medium base
Plate, the metal being arranged on medium substrate and radiation the line of rabbet joint, coplanar waveguide feeder line；The one side of medium substrate is
Metal ground and coplanar waveguide feeder line, the ground plane of coplanar waveguide feeder line is exactly metal ground；Metal has radius on the ground
Seam, 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 short at one end of the radiation line of rabbet joint,
The other end is opened a way；Radiate the line of rabbet joint part near open end, two edges of its line of rabbet joint, have two rows' metallization
Arrays of vias so that the radiation line of rabbet joint, near the characteristic impedance step-down of the part of open end, forms the low-resistance line of rabbet joint；Spoke
The remainder penetrating the 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,
Produce 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；Coplanar waveguide feeder line
One end be the port of antenna, the conductor of the coplanar waveguide feeder line other end strides across the high resistant line of rabbet joint, at the high resistant line of rabbet joint
Edge, with metal be connected.
Change the thickness of medium substrate, pcrmeability and dielectric constant, thus it is possible to vary the high resistant line of rabbet joint and the low-resistance line of rabbet joint
Characteristic impedance, changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then changes the low frequency operation frequency band of antenna
Operating frequency 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 radiation line of rabbet joint can be regulated
Electrical length, to realize antenna miniaturization in various degree, it is also possible to change the work of the low frequency operation frequency band of antenna
Frequency and the operating frequency of high-frequency work frequency band.
In metallization arrays of vias, change the spacing of adjacent metal via, the characteristic of the low-resistance line of rabbet joint can be regulated
Impedance, changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then changes the work of the low frequency operation frequency band of antenna
Working frequency and the operating frequency of high-frequency work frequency band.
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 step
The height impedance ratio of the impedance radiation line of rabbet joint, and then change operating frequency and the high frequency work of the low frequency operation frequency band of antenna
Make the operating frequency of frequency band.
In metallization arrays of vias, the spacing of adjacent metal via is less than 1/10th wavelength.
The operating frequency of the low frequency operation frequency band of half slot antenna of coplanar wave guide feedback metallic vias Stepped Impedance and
The operating frequency of high-frequency work frequency band is mainly determined by the resonant frequency of the radiation line of rabbet joint, but the size on metal ground,
The position that coplanar waveguide feeder line conductor is connected with the radiation line of rabbet joint can also be to the operating frequency of antenna and matching degree
It is adjusted.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 radius of Stepped Impedance
Seam, not only makes antenna miniaturization, reduces cross polarization, also reduces the size on metal ground, but also can
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.Owing to the radiation line of rabbet joint is quarter-wave resonance structure,
More half as large than the radiation slot length of 1/2nd wavelength of usual two terminal shortcircuits, the therefore overall dimensions of antenna
Reducing the most accordingly, occlusion effect reduces further.
Beneficial effect: the beneficial effect of half slot antenna of the coplanar wave guide feedback metallic vias Stepped Impedance of the present invention
It is that this antenna can reduce the electric size of whole antenna, realize miniaturization, and this antenna has been possible not only to many simultaneously
Individual frequency band, and multiple frequency band can regulate respectively, also has the cross polarization effect of suppression antenna.
Accompanying drawing explanation
Fig. 1 is half slot antenna structural representation of coplanar wave guide feedback metallic vias Stepped Impedance.
Figure has: medium substrate 1, metal ground 2, radiation the line of rabbet joint 3, coplanar waveguide feeder line 4, ground plane 5,
The other end 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
Ground metallic vias Stepped Impedance antenna 13 is stitched with the grid of 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: half slot antenna bag of coplanar wave guide feedback metallic vias Stepped Impedance
The metal ground 2 include medium substrate 1, being arranged on medium substrate 1 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 just
It is 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, radiates the line of rabbet joint 3
It is positioned at the center on metal ground 2；The short at one end of the radiation line of rabbet joint 3, the other end 6 is opened a way；At the radiation line of rabbet joint 3
Near the part of open end, two edges of its line of rabbet joint, two rows are had to metallize via 7 array so that radius
Seam 3, near the characteristic impedance step-down of the part of open end, forms the low-resistance line of rabbet joint 8；Its remaining part of the radiation line of rabbet joint 7
Dividing is the high resistant line of rabbet joint 9, and 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
Low frequency operation frequency band that one frequency is relatively low and the higher high-frequency work frequency band of a frequency；Metallization via 7
Passing through medium substrate 1, one is connected with metal ground 2, and other end is at the another side of medium substrate 1；Coplanar ripple
The one end leading feeder line 4 is the port 10 of antenna, and the conductor 12 of coplanar waveguide feeder line 4 other end strides across high resistant groove
Seam 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, thus it is possible to vary the high resistant line of rabbet joint 9 and low-resistance groove
The characteristic impedance of seam 8, changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then changes the low frequency of antenna
The operating frequency of working band 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, radiation can be regulated
The electrical length of the line of rabbet joint 3, to realize antenna miniaturization in various degree, it is also possible to changes the low frequency operation frequency of antenna
The operating frequency of band and the operating frequency of high-frequency work frequency band.
In metallization via 7 array, change the spacing of adjacent metal via 7, the low-resistance line of rabbet joint 8 can be regulated
Characteristic impedance, change Stepped Impedance radiation the line of rabbet joint 3 height impedance ratio, and then change antenna low frequency operation
The operating frequency of frequency band and the operating frequency of high-frequency work frequency band.
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
Become 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
Operating frequency with 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 the low frequency operation frequency band of half slot antenna of coplanar wave guide feedback metallic vias Stepped Impedance and
The operating frequency of high-frequency work frequency band is mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but the chi on metal ground 2
The position that very little, coplanar waveguide feeder line 4 conductor 12 is connected with the radiation line of rabbet joint 3 can also be to the operating frequency of antenna
It is adjusted with matching degree.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 makes antenna miniaturization, reduces cross polarization, also reduce metal
The size on ground 2, but also so that antenna has multiple working band, and change the low-resistance line of rabbet joint 8 and high resistant
The relative length of the line of rabbet joint 9, position and impedance, can adjust the position of two working bands respectively.Due to radiation
The line of rabbet joint 3 is quarter-wave resonance structure, than the radiation line of rabbet joint of 1/2nd wavelength of usual two terminal shortcircuits
Length is half as large, and therefore the overall dimensions of antenna reduces the most accordingly, and occlusion effect reduces further.
In technique, half slot antenna of coplanar wave guide feedback metallic vias Stepped Impedance both can use common print
Printed circuit board (PCB) technique, it would however also be possible to employ LTCC (LTCC) technique or CMOS, Si
The integrated circuit technologies such as substrate realize.Wherein metallization via 7 can be hollow metal through hole can also be solid
Grommet, 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 (5)
1. half slot antenna of a coplanar wave guide feedback metallic vias Stepped Impedance, it is characterised in that this antenna bag
Metal ground (2) that include medium substrate (1), is arranged on medium substrate (1) and radiate the line of rabbet joint (3), coplanar
Waveguide feeder (4)；The one side of medium substrate (1) is metal ground (2) and coplanar waveguide feeder line (4), coplanar
The ground plane (5) of waveguide feeder (4) is exactly metal ground (2)；The radiation line of rabbet joint (3) is had 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)；Radius
The short at one end of seam (3), the other end (6) is opened a way；In the part of the close open end of the radiation line of rabbet joint (3),
Two edges of its line of rabbet joint, have two rows to metallize via (7) array so that the radiation line of rabbet joint (3) is near open circuit
The characteristic impedance step-down of the part of end, forms the low-resistance line of rabbet joint (8)；The remainder of the radiation line of rabbet joint (3) is high
The resistance 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),
Produce a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metallization via
(7) passing through medium substrate (1), one is connected with metal ground (2), and other end is at medium substrate (1)
Another side；One end of coplanar waveguide feeder line (4) is the port (10) of antenna, and coplanar waveguide feeder line (4) is another
The conductor (12) of one 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 ground
(2) connect.
Half slot antenna of a kind of coplanar wave guide feedback metallic vias Stepped Impedance the most according to claim 1,
It is characterized in that changing thickness, pcrmeability and the dielectric constant of medium substrate (1), thus it is possible to vary the high resistant line of rabbet joint
And the characteristic impedance of the low-resistance line of rabbet joint (8) (9), the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3) is changed,
And then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Half slot antenna of a kind of coplanar wave guide feedback metallic vias Stepped Impedance the most 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)
Put, 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.
Half slot antenna of a kind of coplanar wave guide feedback metallic vias Stepped Impedance the most according to claim 1,
It is characterized in that metallizing in via (7) array, change the spacing of adjacent metal via (7), can adjust
The characteristic impedance of the joint low-resistance line of rabbet joint (8), changes 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.
Half slot antenna of a kind of coplanar wave guide feedback metallic vias Stepped Impedance the most 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 high resistant line of rabbet joint (9) can be regulated
Characteristic impedance, change Stepped Impedance radiation the line of rabbet joint (3) height impedance ratio, and then change antenna low frequency
The operating frequency of working band and the operating frequency of high-frequency work frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218451.1A CN105896047A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed metal via hole step impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218451.1A CN105896047A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed metal via hole step impedance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896047A true CN105896047A (en) | 2016-08-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218451.1A Pending CN105896047A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed metal via hole step impedance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896047A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201610218451.1A patent/CN105896047A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134871A (en) * | 2014-07-22 | 2014-11-05 | 南京邮电大学 | High-isolation semi-groove slot antenna array |
Non-Patent Citations (1)
| Title |
|---|
| 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: 20160824 |
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