CN105896061A - Semi-slot antenna with coplanar waveguide feed low-impedance side wall step impedance - Google Patents
Semi-slot antenna with coplanar waveguide feed low-impedance side wall step impedance Download PDFInfo
- Publication number
- CN105896061A CN105896061A CN201610218777.4A CN201610218777A CN105896061A CN 105896061 A CN105896061 A CN 105896061A CN 201610218777 A CN201610218777 A CN 201610218777A CN 105896061 A CN105896061 A CN 105896061A
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- China
- Prior art keywords
- rabbet joint
- line
- low
- frequency
- antenna
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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 low-impedance side wall 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 two metalized side walls (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, half slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance.
Background technology
Slot antenna is the antithesis antenna of element antenna, has a wide range of applications.But, common slot antenna not only spoke
Penetrate the length of the line of rabbet joint itself and to have 1/2nd wavelength, and radiate and also need to bigger Metal ground around the line of rabbet joint and amass, logical
Often length 1/2nd wavelength bigger than the length of the line of rabbet joint on metal ground, the width big 1/2nd of the width ratio line of rabbet joint on metal ground
Wavelength.Bigger metal ground can make slot antenna be not suitable for multiple-input and multiple-output (MIMO) application, causes antenna
Cross polarization is deteriorated, and these all will cause the decline of spectrum efficiency and channel capacity.The impedance of the line of rabbet joint simultaneously is very big, also makes
The impedance matching obtaining slot antenna feeding transmission line is relatively difficult.The development of modern communications simultaneously also requires that antenna can be with multifrequency
Band work and two frequency bands can regulate respectively.
Summary of the invention
Technical problem: the purpose of the present invention is to propose to half slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance, should
Antenna has been possible not only to multiple working band, and multiple frequency band can regulate respectively；This antenna can reduce the radiation line of rabbet joint
Length and metal ground area, and have suppression cross-polarized effect.
Technical scheme: half slot antenna of the coplanar wave guide feedback low-resistance sidewall Stepped Impedance of the present invention includes medium substrate, sets
With putting metal on medium substrate and the radiation line of rabbet joint, coplanar waveguide feeder line；The one side of medium substrate be metal and coplanar
Waveguide feeder, the ground plane of coplanar waveguide feeder line is exactly metal ground；Metal has the radiation line of rabbet joint, the shape of the radiation line of rabbet joint on the ground
Being rectangle, 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；At the radiation line of rabbet joint
Near the part of open end, two edges of its line of rabbet joint, there are two metalized sidewall so that the radiation line of rabbet joint is near open end
The characteristic impedance step-down of part, form the low-resistance line of rabbet joint；Radiation the line of rabbet joint remainder be the high resistant line of rabbet joint, the high resistant line of rabbet joint and
The low-resistance line of rabbet joint constitutes the Stepped Impedance radiation line of rabbet joint together, produces a relatively low low frequency operation frequency band of frequency and a frequency relatively
High high-frequency work frequency band；Metalized sidewall passes through medium substrate, one with metal be connected, other end is at medium substrate
Another side；One end of coplanar waveguide feeder line is the port of antenna, and the conductor of the coplanar waveguide feeder line other end strides across high resistant groove
Seam, 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, thus it is possible to vary the characteristic resistance of the high resistant line of rabbet joint and the low-resistance line of rabbet joint
Anti-, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint, and then change 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 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 operating frequency and the high-frequency work of the low frequency operation frequency band of antenna
The operating frequency of 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 Stepped Impedance spoke
Penetrate the height impedance ratio of the line of rabbet joint, and then change operating frequency and the work of high-frequency work frequency band of the low frequency operation frequency band of antenna
Frequency.
The operating frequency of the low frequency operation frequency band of half slot antenna of coplanar wave guide feedback low-resistance sidewall Stepped Impedance and high frequency work
The operating frequency making frequency band is mainly determined by the resonant frequency of the radiation line of rabbet joint, but the size on metal ground, coplanar waveguide feeder line
The operating frequency of antenna and matching degree can also be adjusted by the position that conductor is connected with the radiation line of rabbet joint.Due to radius
Stitch the existing low-resistance line of rabbet joint and have again the high resistant line of rabbet joint, constitute the radiation line of rabbet joint of Stepped Impedance, not only make antenna miniaturization, subtract
Little cross polarization, also reduces the size on metal ground, but also so that antenna has multiple working band, Er Qiegai
Step-down hinders the line of rabbet joint and the relative length of the high resistant line of rabbet joint and impedance, can adjust the position of two working bands respectively.Due to spoke
Penetrating the line of rabbet joint 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: half slot antenna of the coplanar wave guide feedback low-resistance sidewall Stepped Impedance of the present invention provides the benefit that, should
Antenna can reduce the electric size of whole antenna, realize miniaturization, and this antenna has been possible not only to multiple frequency band simultaneously, and
Multiple frequency bands 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 low-resistance sidewall Stepped Impedance.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coplanar waveguide feeder line 4, ground plane 5, the other end
6, metalized sidewall 7, the low-resistance line of rabbet joint 8, the high resistant line of rabbet joint 9, port 10, edge 11, conductor 12 and the grid of single polarization
Seam ground metal sidewall Stepped Impedance antenna 13.
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 of coplanar wave guide feedback low-resistance sidewall Stepped Impedance includes medium
Substrate 1, the metal being arranged on medium substrate 1 ground 2 and the radiation line of rabbet joint 3, coplanar waveguide feeder line 4；Medium substrate 1
One side be metal ground 2 and coplanar waveguide feeder line 4, the ground plane 5 of coplanar waveguide feeder line 4 is exactly metal ground 2；Metal
Having the radiation line of rabbet joint 3 on 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；Spoke
Penetrating the short at one end of the line of rabbet joint 3, the other end 6 is opened a way；Radiating the line of rabbet joint 3 part near open end, two of its line of rabbet joint
, there are two metalized sidewall 7 at edge so that the radiation line of rabbet joint 3, near the characteristic impedance step-down of the part of open end, is formed
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 is constituted together with the low-resistance line of rabbet joint 8
The Stepped Impedance radiation line of rabbet joint 3, produces one relatively low low frequency operation frequency band of frequency and the higher high-frequency work of frequency frequently
Band；Metalized sidewall 7 passes through medium substrate 1, and one is connected with metal ground 2, and other end is at another of medium substrate 1
Face；One end of coplanar waveguide feeder line 4 is the port 10 of antenna, and the conductor 12 of coplanar waveguide feeder line 4 other end strides across height
The resistance 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, thus it is possible to vary the high resistant line of rabbet joint 9 and the low-resistance line of rabbet joint 8
Characteristic impedance, changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint 3, 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 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 radiation line of rabbet joint 3 can be regulated
Electrical length, 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
Operating frequency with 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 step
The height impedance ratio of the impedance radiation line of rabbet joint 3, and then change operating frequency and the high-frequency work frequency of the low frequency operation frequency band of antenna
The operating frequency of band.
The operating frequency of the low frequency operation frequency band of half slot antenna of coplanar wave guide feedback low-resistance sidewall Stepped Impedance and high frequency work
The operating frequency making frequency band is mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but the size on metal ground 2, co-planar waveguide
The operating frequency of antenna and matching degree can also be adjusted by the position that feeder line 4 conductor 12 is connected with the radiation line of rabbet joint 3.
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
Make antenna miniaturization, reduce cross polarization, also reduce the size on metal ground 2, but also so that antenna has
Multiple working bands, 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 distinguish
Adjust the position of two working bands.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, shorter than usual two ends
The radiation slot length of 1/2nd wavelength on road is half as large, and therefore the overall dimensions of antenna reduces the most accordingly, blocks effect
Should reduce further.
In technique, half slot antenna of coplanar wave guide feedback low-resistance sidewall Stepped Impedance both can use common printed circuit
Plate (PCB) technique, it would however also be possible to employ the integrated circuits such as LTCC (LTCC) technique or CMOS, Si substrate
Technique realizes.Wherein metalized sidewall 7 can be hollow metal sidewall can also be solid metal sidewall.
In accordance with the above, the present invention can just be realized.
Claims (4)
1. half slot antenna of a coplanar wave guide feedback low-resistance sidewall Stepped Impedance, it is characterised in that this antenna includes medium
Substrate (1), the metal being arranged on medium substrate (1) ground (2) 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), the ground connection of coplanar waveguide feeder line (4)
Face (5) is exactly 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 square
Shape, 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)
Open circuit；At the part of the close open end of the radiation line of rabbet joint (3), two edges of its line of rabbet joint, there are two metalized sidewall (7),
Make the characteristic impedance step-down radiating the line of rabbet joint (3) near the part of open end, form the low-resistance line of rabbet joint (8)；The radiation line of rabbet joint
(3) remainder 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)
The radiation 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；Gold
Genusization sidewall (7) passes through medium substrate (1), and one is connected with metal ground (2), and other end is in medium substrate (1)
Another side；One end of coplanar waveguide feeder line (4) is the port (10) of antenna, coplanar waveguide feeder line (4) other end
Conductor (12) stride 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.
Half slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance the most according to claim 1, it is special
Levy thickness, pcrmeability and the dielectric constant being to change medium substrate (1), thus it is possible to vary the high resistant line of rabbet joint (9) and low-resistance
The characteristic impedance of the line of rabbet joint (8), changes the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then changes the low of antenna
Frequently the operating frequency of working band and the operating frequency of high-frequency work frequency band.
Half slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance the most according to claim 1, it is special
Levy and be to 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), can adjust
The electrical length of the joint radiation line of rabbet joint (3), to realize antenna miniaturization in various degree, it is also possible to change the low frequency work of antenna
Make operating frequency and the operating frequency of high-frequency work frequency band of frequency band.
Half slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance the most according to claim 1, it is special
Levy the width being to change the radiation line of rabbet joint (3), the characteristic resistance of the low-resistance line of rabbet joint (8) and the high resistant line of rabbet joint (9) can be regulated
Anti-, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change the work of the low frequency operation frequency band of antenna
Frequency and the operating frequency of high-frequency work frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218777.4A CN105896061A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed low-impedance side wall step impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218777.4A CN105896061A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed low-impedance side wall step impedance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896061A true CN105896061A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218777.4A Pending CN105896061A (en) | 2016-04-08 | 2016-04-08 | Semi-slot antenna with coplanar waveguide feed low-impedance side wall step impedance |
Country Status (1)
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|---|---|
| CN (1) | CN105896061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579345A (en) * | 2017-08-21 | 2018-01-12 | 南京理工大学 | Antenna for full metal jacket mobile phone |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638940U (en) * | 2010-04-29 | 2010-11-17 | 东南大学 | Quadruple frequency interval printed antenna using travelling wave feeding structure |
| CN102570020A (en) * | 2012-01-18 | 2012-07-11 | 华南理工大学 | Ultra-wideband trapped wave antenna with good rectangular degree and controllable stop band bandwidth |
| CN102664307A (en) * | 2012-05-18 | 2012-09-12 | 哈尔滨工业大学 | Slot-loaded multi-frequency printed 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 CN201610218777.4A patent/CN105896061A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638940U (en) * | 2010-04-29 | 2010-11-17 | 东南大学 | Quadruple frequency interval printed antenna using travelling wave feeding structure |
| CN102570020A (en) * | 2012-01-18 | 2012-07-11 | 华南理工大学 | Ultra-wideband trapped wave antenna with good rectangular degree and controllable stop band bandwidth |
| CN102664307A (en) * | 2012-05-18 | 2012-09-12 | 哈尔滨工业大学 | Slot-loaded multi-frequency printed 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579345A (en) * | 2017-08-21 | 2018-01-12 | 南京理工大学 | Antenna for full metal jacket mobile phone |
| CN107579345B (en) * | 2017-08-21 | 2019-08-23 | 南京理工大学 | Antenna for full metal jacket mobile phone |
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Application publication date: 20160824 |