CN105896055A - Three-polarization semi-slot antenna with dual-frequency metal via hole step impedance - Google Patents
Three-polarization semi-slot antenna with dual-frequency metal via hole step impedance Download PDFInfo
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- CN105896055A CN105896055A CN201610218662.5A CN201610218662A CN105896055A CN 105896055 A CN105896055 A CN 105896055A CN 201610218662 A CN201610218662 A CN 201610218662A CN 105896055 A CN105896055 A CN 105896055A
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- rabbet joint
- line
- frequency
- 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
-
- 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 discloses a three-polarization semi-slot antenna with dual-frequency metal via hole step impedance, which relates to a slot antenna. The antenna is composed of three single-polarization antennas (13) placed vertically mutually. Each antenna (13) comprises a dielectric substrate (1), a metal ground (2) and a radiation slot (3) on the dielectric substrate (1) and a microstrip feeder (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); and one end of the microstrip feeder (4) is an antenna port (10) and the other end of the microstrip feeder (4) is open-circuited, passes across the high-impedance slot (9) to be connected with the metal ground (2) at the edge (11) through a short circuit pin (12). The antenna works under multiple frequency bands, the antenna size, the cross polarization and the shielding can be reduced, and isolation is improved.
Description
Technical field
The present invention relates to a kind of slot antenna, three polarization half grooves of a kind of bi-frequency metal via Stepped Impedance
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.Multipolarization MIMO can effectively improve spectrum efficiency and channel capacity,
In order to MIMO technology being may apply to the terminal that volume is little, need co-located for the most like-polarized antenna placement.
Bigger metal ground can produce occlusion effect to the radiation of antenna so that it is many that slot antenna is not suitable for co-located multi input
Output (MIMO) application, when using in particular as multi-polarization antenna, big metal ground will cause antenna
Isolation between cross polarization variation, antenna port is 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 three polarization half groove skies of a kind of bi-frequency metal via Stepped Impedance
Line, this antenna has been possible not only to multiple working band, and multiple frequency band can regulate respectively;This antenna is permissible
Reduce length and the area on metal ground of the radiation line of rabbet joint, and there is suppression cross polarization, improvement isolation, reduce
The effect blocked.
Technical scheme: three polarization half slot antennas of the bi-frequency metal via Stepped Impedance of the present invention include three mutually
The metallic vias Stepped Impedance antenna of the single polarization being disposed vertically;The metallic vias Stepped Impedance sky of each single polarization
The metal that line includes medium substrate, be arranged on medium substrate and the radiation line of rabbet joint, microstrip feed line;Medium substrate
One side be metal ground, the another side of medium substrate is the conduction band of microstrip feed line;Metal has the radiation line of rabbet joint on the ground,
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, separately
Open a way in one end;Radiate the line of rabbet joint part near open end, two edges of its line of rabbet joint, have two rows to metallize
Hole array 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;Radiation
The remainder of 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;Also it is institute metal
The ground plane of the microstrip feed line stated, one end of microstrip feed line is the port of antenna, another of the conduction band of microstrip feed line
End strides across the high resistant line of rabbet joint, at the edge of the high resistant line of rabbet joint, is connected by Shorted post and metal.
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 three polarization half slot antennas of bi-frequency metal via Stepped Impedance and height
Frequently the operating frequency of working band is mainly determined by the resonant frequency of the radiation line of rabbet joint, but the size, micro-on metal ground
The operating frequency of antenna and matching degree can also be adjusted by ribbon feeder conduction band in the position of the radiation line of rabbet joint.By
There is again the high resistant line of rabbet joint in the radiation line of rabbet joint existing low-resistance line of rabbet joint, constitute the radiation line of rabbet joint of Stepped Impedance, not only make
Antenna miniaturization, reduces cross polarization, also reduces the size on metal ground, improves isolation and reduces metal
The occlusion effect on ground, but also so that antenna has multiple working band, and change the low-resistance line of rabbet joint and high resistant
The relative length of the line of rabbet joint and impedance, can adjust the position of two working bands respectively.Due to the radiation line of rabbet joint 3
It is quarter-wave resonance structure, wants than the radiation slot length of 1/2nd wavelength of usual two terminal shortcircuits
Half as large, therefore the overall dimensions of antenna reduces the most accordingly, and occlusion effect reduces further.
Beneficial effect: three polarization half slot antennas of the bi-frequency metal via Stepped Impedance of the present invention provide the benefit that,
This antenna can reduce the electric size of whole antenna, realize miniaturization, and this antenna has been possible not only to multiple frequency simultaneously
Band, and multiple frequency band can regulate respectively, also has the cross polarization of suppression antenna, improves the interval of port
From, and reduce the effect blocked on metal ground.
Accompanying drawing explanation
Fig. 1 is three polarization half slot antenna overall structure schematic diagrams of bi-frequency metal via Stepped Impedance.
Fig. 2 be bi-frequency metal via Stepped Impedance three polarization half slot antennas in single polarization metallic vias step resistance
The structural representation of anti-antenna.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, microstrip feed line 4, conduction band 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, Shorted post 12 and list
The metallic vias Stepped Impedance antenna 13 of 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: three polarization half slot antennas of bi-frequency metal via Stepped Impedance include
Three metallic vias Stepped Impedance antennas 13 being mutually perpendicular to the single polarization placed;The metal mistake of each single polarization
Hole Stepped Impedance antenna 13 includes medium substrate 1, be arranged on medium substrate 1 metal ground 2 and radius
Seam 3, microstrip feed line 4;The one side of medium substrate 1 is metal ground 2, and the another side of medium substrate 1 is micro-strip
The conduction band 5 of feeder line 4;Having the radiation line of rabbet joint 3 on metal ground 2, the shape of the radiation line of rabbet joint 3 is rectangle, radius
Seam 3 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, have two rows to metallize via 7 array so that radiation
The line of rabbet joint 3, near the characteristic impedance step-down of the part of open end, forms the low-resistance line of rabbet joint 8;Remaining of the radiation line of rabbet joint 7
Part 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 a raw 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;Metal ground
2 is also the ground plane of described microstrip feed line 4, and one end of microstrip feed line 4 is the port 10 of antenna, and micro-strip is presented
The other end of the conduction band 5 of line 4 strides across the high resistant line of rabbet joint 9, at the edge 11 of the high resistant line of rabbet joint 9, passes through Shorted post
12 are 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 arrays of vias 7, change the spacing of adjacent metal via, the low-resistance line of rabbet joint 8 can be regulated
Characteristic impedance, changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, and then changes the low frequency operation frequency of antenna
The operating frequency of 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 three polarization half slot antennas of bi-frequency metal via Stepped Impedance and height
Frequently the operating frequency of working band is mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but the size on metal ground 2,
The conduction band 5 of microstrip feed line 4 can also be to the operating frequency of antenna and coupling in the position of the radiation line of rabbet joint 3 and width
Degree is adjusted.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 step resistance
The anti-radiation line of rabbet joint 3, not only makes antenna miniaturization, reduces cross polarization, also reduces metal ground 2
Size, improves isolation and reduces the occlusion effect on metal ground 2, but also so that antenna has multiple work
Frequency 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, can adjust respectively
The position of whole two working bands.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, ratio usual two
The radiation slot length of 1/2nd wavelength of terminal shortcircuit is half as large, and therefore the overall dimensions of antenna subtracts the most accordingly
Few, occlusion effect reduces further.
In technique, three polarization half slot antennas of bi-frequency metal via Stepped Impedance both can use common printing
Circuit board (PCB) technique, it would however also be possible to employ LTCC (LTCC) technique or CMOS, Si base
The integrated circuit technologies such as sheet realize.Wherein metallization via 7 can be hollow metal through hole can also be solid gold
Belonging to hole, 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 be installed together by draw-in groove, or
Person is mutually perpendicular to be bonded together by binding agent, or two kinds of methods are used together.
In accordance with the above, the present invention can just be realized.
Claims (5)
1. three polarization half slot antennas of a bi-frequency metal via Stepped Impedance, it is characterised in that this antenna includes
Three metallic vias Stepped Impedance antenna (13) being mutually perpendicular to the single polarization placed;The metal of each single polarization
The metal ground that via Stepped Impedance antenna (13) includes medium substrate (1), is arranged on medium substrate (1)
(2) and radiation the line of rabbet joint (3), microstrip feed line (4);The one side of medium substrate (1) is metal ground (2), is situated between
The another side of matter substrate (1) is the conduction band (5) of microstrip feed line (4);The radiation line of rabbet joint is had on metal ground (2)
(3), 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);
The short at one end of the radiation line of rabbet joint (3), the other end (6) is opened a way;In the radiation line of rabbet joint (3) near open end
Part, two edges of its line of rabbet joint, there are two rows to metallize via (7) array so that the radiation line of rabbet joint (3) is leaned on
The characteristic impedance step-down of the part of nearly open end, forms the low-resistance line of rabbet joint (8);Its remaining part of the radiation line of rabbet joint (3)
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 together with the low-resistance line of rabbet joint (8)
(3) the relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency, are produced;Metal
Changing via (7) and pass through medium substrate (1), one is connected with metal ground (2), and other end is in medium substrate (1)
Another side;Metal ground (2) is also the ground plane of described microstrip feed line (4), microstrip feed line (4)
One end is the port (10) of antenna, and the other end of the conduction band (5) of microstrip feed line (4) strides across the high resistant line of rabbet joint (9),
At the edge (11) of the high resistant line of rabbet joint (9), it is connected with metal ground (2) by Shorted post (12).
Three polarization half slot antennas of a kind of bi-frequency metal via 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.
Three polarization half slot antennas of a kind of bi-frequency metal via 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.
Three polarization half slot antennas of a kind of bi-frequency metal via 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.
Three polarization half slot antennas of a kind of bi-frequency metal via 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)
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CN201610218662.5A CN105896055A (en) | 2016-04-08 | 2016-04-08 | Three-polarization semi-slot antenna with dual-frequency metal via hole step impedance |
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CN201610218662.5A CN105896055A (en) | 2016-04-08 | 2016-04-08 | Three-polarization semi-slot antenna with dual-frequency metal via hole step impedance |
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CN201610218662.5A Pending CN105896055A (en) | 2016-04-08 | 2016-04-08 | Three-polarization semi-slot antenna with dual-frequency metal via hole step impedance |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 CN201610218662.5A patent/CN105896055A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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: 20160824 |