CN105896041A - Slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance - Google Patents
Slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance Download PDFInfo
- Publication number
- CN105896041A CN105896041A CN201610216980.8A CN201610216980A CN105896041A CN 105896041 A CN105896041 A CN 105896041A CN 201610216980 A CN201610216980 A CN 201610216980A CN 105896041 A CN105896041 A CN 105896041A
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- Prior art keywords
- rabbet joint
- line
- low
- resistance
- frequency
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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
A slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance relates to a slot antenna, and comprises a dielectric substrate (1), a metal ground (2) and a radiation slot (3) which are arranged on the dielectric substrate (1), and a coplanar waveguide feeder line (4). The radiation slot (3) is arranged on the metal ground (2), and the two ends of the radiation slot (3) are in short circuit. Two metallization side walls (7) at the middle part of the radiation slot (3) form a low-resistance slot (8), and the rest part of the radiation slot (3) is a high-resistance slot (9). A conductor (5) outside the coplanar waveguide feeder line (4) is connected with the metal ground (2), and a conductor (12) at the tail end of the coplanar waveguide feeder line (4) spans the high-resistance slot (9) and is connected with the metal ground (2) at the edge (11) of the high-resistance slot (9). The antenna is in multi-frequency band work, enables the size and the shelter to be reduced and the isolation to be improved, and restrains the cross polarization.
Description
Technical field
The present invention relates to a kind of slot antenna, the 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 the 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: the 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；Two terminal shortcircuits of the radiation line of rabbet joint；At radiation line of rabbet joint mid portion, its
, there are two metalized sidewall at two edges of the line of rabbet joint so that the characteristic impedance step-down of radiation line of rabbet joint mid portion, are formed low
The resistance line of rabbet joint；The remainder of the radiation line of rabbet joint is the high resistant line of rabbet joint, and the high resistant line of rabbet joint constitutes Stepped Impedance radiation together with the low-resistance line of rabbet joint
The line of rabbet joint, produces a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metalized sidewall
Pass through medium substrate, one with metal be connected, other end is at the another side of medium substrate；One end of coplanar waveguide feeder line
Being 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 edge of the high resistant line of rabbet joint, with metal
Ground connects.
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 the 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.
Beneficial effect: the 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 the slot antenna structural representation of coplanar wave guide feedback low-resistance sidewall 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, two ends 6,
The grid seam of 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 single polarization
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: the 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
Penetrate two ends 6 short circuit of the line of rabbet joint 3；At the radiation line of rabbet joint 3 mid portion, two edges of its line of rabbet joint, there are two metallization sides
Wall 7 so that the characteristic impedance step-down of the radiation line of rabbet joint 3 mid portion, 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 one
Low frequency operation frequency band that frequency is relatively low and the higher high-frequency work frequency band of a frequency；Metalized sidewall 7 passes through medium substrate
1, one is connected with metal ground 2, and other end is at the another side of medium substrate 1；One end of coplanar waveguide feeder line 4 is sky
The port 10 of line, the conductor 12 of coplanar waveguide feeder line 4 other end strides across the high resistant line of rabbet joint 9, at the edge of the high resistant line of rabbet joint 9
11, it 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 the 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.
In technique, the 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. the slot antenna of a coplanar wave guide feedback low-resistance sidewall Stepped Impedance, it is characterised in that this antenna includes medium substrate (1), metal ground (2) that is arranged on medium substrate (1) and radiate the 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 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 rectangle, the center of the radiation line of rabbet joint (3) with being positioned at metal (2)；Two ends (6) short circuit of the radiation line of rabbet joint (3)；At the radiation line of rabbet joint (3) mid portion, two edges of its line of rabbet joint, there are two metalized sidewall (7) so that the characteristic impedance step-down of the radiation line of rabbet joint (3) mid portion, form the low-resistance line of rabbet joint (8)；The remainder of the radiation line of rabbet joint (3) is the high resistant line of rabbet joint (9), the high resistant line of rabbet joint (9) constitutes the Stepped Impedance radiation line of rabbet joint (3) together with the low-resistance line of rabbet joint (8), produces a relatively low low frequency operation frequency band of frequency and the higher high-frequency work frequency band of a frequency；Metalized sidewall (7) passes through medium substrate (1), and one is connected with metal ground (2), and other end is at the another side of medium substrate (1)；One end of coplanar waveguide feeder line (4) is the port (10) of antenna, the conductor (12) of coplanar waveguide feeder line (4) other end strides across the high resistant line of rabbet joint (9), at the edge (11) of the high resistant line of rabbet joint (9), with metal (2) be connected.
The slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall Stepped Impedance the most according to claim 1, it is characterized in that changing thickness, pcrmeability and the dielectric constant of medium substrate (1), the high resistant line of rabbet joint (9) and the characteristic impedance of the low-resistance line of rabbet joint (8) can be changed, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
The slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall 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), 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.
The slot antenna of a kind of coplanar wave guide feedback low-resistance sidewall 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 characteristic impedance of the high resistant line of rabbet joint (9) can be regulated, change the height impedance ratio of the Stepped Impedance radiation line of rabbet joint (3), and then change operating frequency and the operating frequency of high-frequency work frequency band of the low frequency operation frequency band of antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216980.8A CN105896041A (en) | 2016-04-08 | 2016-04-08 | Slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216980.8A CN105896041A (en) | 2016-04-08 | 2016-04-08 | Slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896041A true CN105896041A (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216980.8A Pending CN105896041A (en) | 2016-04-08 | 2016-04-08 | Slot antenna of coplanar waveguide feed low-resistance side wall stepped-impedance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105896041A (en) |
Citations (1)
| 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 |
-
2016
- 2016-04-08 CN CN201610216980.8A patent/CN105896041A/en active Pending
Patent Citations (1)
| 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 |
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》 * |
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Application publication date: 20160824 |