CN105846103A - Coaxial feed line low resistance sidewall step impedance slot antenna - Google Patents
Coaxial feed line low resistance sidewall step impedance slot antenna Download PDFInfo
- Publication number
- CN105846103A CN105846103A CN201610218780.6A CN201610218780A CN105846103A CN 105846103 A CN105846103 A CN 105846103A CN 201610218780 A CN201610218780 A CN 201610218780A CN 105846103 A CN105846103 A CN 105846103A
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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
- 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
- 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
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- 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
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a coaxial feed line low resistance sidewall step impedance slot antenna which comprises a dielectric substrate (1), a metal ground (2) and a radiation slot seam (3) on the medium substrate (1), and a coaxial feed line (4). The radiation slot seam (3) is arranged on the metal ground (2). The two ends (6) of the radiation slot (3) are shorted. In the middle of the radiation slot (3) is a low resistance slot (8) formed by two metalized side walls (7). The rest part of the radiation slot (3) is a high impedance slot seam (9). The external conductor (5) of the coaxial feed line (4) is connected to the metal ground (2). The conductor (12) inside the end part of the coaxial feed line (4) crosses over the high impedance slot seam (9) at the edges (11) to get connected with the metal ground (2). The antenna of the invention can work with multiple bands. With reduced size, the antenna achieves cross polarization. Well blocked, an improved isolation effect can be achieved as well.
Description
Technical field
The present invention relates to a kind of slot antenna, the slot antenna of a kind of coaxial feed 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 coaxial feed low-resistance sidewall Stepped Impedance, this antenna
It is possible not only to multiple working band, and multiple frequency band can regulate respectively；This antenna can reduce the length of the radiation line of rabbet joint
Degree and the area on metal ground, and there is the cross-polarized effect of suppression.
Technical scheme: the slot antenna of the coaxial feed low-resistance sidewall Stepped Impedance of the present invention includes medium substrate, is arranged on
Metal ground on medium substrate and the radiation line of rabbet joint, coaxial feeder；The one side of medium substrate is metal ground, outside coaxial feeder
It is affixed conductor and metal and is connected；Metal has the radiation line of rabbet joint on the ground, and the shape of the radiation line of rabbet joint is rectangle, and the radiation line of rabbet joint is positioned at
The center on metal ground；Two terminal shortcircuits of the radiation line of rabbet joint；At radiation line of rabbet joint mid portion, two edges of its line of rabbet joint, have two
Bar metalized sidewall so that the characteristic impedance step-down of radiation line of rabbet joint mid portion, forms the low-resistance line of rabbet joint；Radiation the line of rabbet joint its
It is the high resistant line of rabbet joint that remaining part is divided, 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, produces a frequency relatively
Low low frequency operation frequency band and the higher high-frequency work frequency band of a frequency；Metalized sidewall passes through medium substrate, one with
Being connected, other end is at the another side of medium substrate metal；One end of coaxial feeder is the port of antenna, and coaxial feeder is another
The inner wire of one end strides across the high resistant line of rabbet joint, 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 the slot antenna of coaxial feed low-resistance sidewall Stepped Impedance and high-frequency work frequency
Band operating frequency mainly by radiation the line of rabbet joint resonant frequency determine, but metal ground size, coaxial feeder inner wire with
The operating frequency of antenna and matching degree can also be adjusted by the position that the radiation line of rabbet joint connects.Owing to the radiation line of rabbet joint is existing
The low-resistance line of rabbet joint has again the high resistant line of rabbet joint, constitutes the radiation line of rabbet joint of Stepped Impedance, not only makes antenna miniaturization, reduce friendship
Fork polarization, also reduces the size on metal ground, but also so that antenna has multiple working band, and change low-resistance
The relative length of the line of rabbet joint and 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 coaxial feed low-resistance sidewall Stepped Impedance of the present invention provides the benefit that, this antenna
Can reduce the electric size of whole antenna, realize miniaturization, this antenna has been possible not only to multiple frequency band simultaneously, and multiple
Frequency band can regulate respectively, also has the cross polarization effect of suppression antenna.
Accompanying drawing explanation
Fig. 1 is the slot antenna structural representation of coaxial feed low-resistance sidewall Stepped Impedance.
Figure has: medium substrate 1, metal ground 2, the radiation line of rabbet joint 3, coaxial feeder 4, outer conductor 5, two ends 6, gold
Genusization sidewall 7, the low-resistance line of rabbet joint 8, the high resistant line of rabbet joint 9, port 10, edge 11 and inner wire 12.
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 coaxial feed low-resistance sidewall Stepped Impedance includes medium substrate
1, the metal ground 2 being arranged on medium substrate 1 and the radiation line of rabbet joint 3, coaxial feeder 4；The one side of medium substrate 1 is gold
Possession 2, the outer conductor 5 of coaxial feeder 4 is affixed with metal ground 2 and is connected；The radiation line of rabbet joint 3, radiation is had on metal ground 2
The shape of the line of rabbet joint 3 is rectangle, and the radiation line of rabbet joint 3 is positioned at the center on metal ground 2；Two ends 6 short circuit of the radiation line of rabbet joint 3；?
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 in the middle of the radiation line of rabbet joint 3
The characteristic impedance step-down of part, forms 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, high resistant groove
Seam 9 together with the low-resistance line of rabbet joint 8 constitute Stepped Impedance radiation the line of rabbet joint 3, produces one relatively low low frequency operation frequency band of frequency with
The high-frequency work frequency band that one frequency is higher；Metalized sidewall 7 passes through medium substrate 1, and one is connected with metal ground 2,
Other end is at the another side of medium substrate 1；One end of coaxial feeder 4 is the port 10 of antenna, coaxial feeder 4 other end
Inner wire 12 stride across the high resistant line of rabbet joint 9, at the edge 11 of the high resistant line of rabbet joint 9,2 be connected with metal ground.
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 coaxial feed low-resistance sidewall Stepped Impedance and high-frequency work frequency
The operating frequency of band is mainly determined by the resonant frequency of the radiation line of rabbet joint 3, but in the size on metal ground 2, coaxial feeder 4
The operating frequency of antenna and matching degree can also be adjusted by the position that conductor 12 is connected with the radiation line of rabbet joint 3.Due 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, constitutes the radiation line of rabbet joint 3 of Stepped Impedance, not only makes
Antenna miniaturization, reduces cross polarization, also reduces the size on metal ground 2, but also so that antenna has multiple
Working 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 two working bands.
In technique, the slot antenna of coaxial feed low-resistance sidewall Stepped Impedance both can use common printed circuit board (PCB)
(PCB) technique, it would however also be possible to employ the integrated circuit works such as LTCC (LTCC) technique or CMOS, Si substrate
Skill 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 coaxial feed low-resistance sidewall Stepped Impedance, it is characterised in that this antenna includes medium substrate
(1) metal ground (2), being arranged on medium substrate (1) and the radiation line of rabbet joint (3), coaxial feeder (4)；Medium base
The one side of plate (1) is metal ground (2), and the outer conductor (5) of coaxial feeder (4) is affixed with metal ground (2) and is connected；
Having the radiation line of rabbet joint (3) on metal ground (2), the shape of the radiation line of rabbet joint (3) is rectangle, and the radiation line of rabbet joint (3) is positioned at gold
The center in possession (2)；Two ends (6) short circuit of the radiation line of rabbet joint (3)；At the radiation line of rabbet joint (3) mid portion, its groove
, there are two metalized sidewall (7) at two edges of seam 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) and low-resistance
The line of rabbet joint (8) constitutes the Stepped Impedance radiation line of rabbet joint (3) together, produces a relatively low low frequency operation frequency band of frequency and one
The high-frequency work frequency band that frequency is higher；Metalized sidewall (7) passes through medium substrate (1), one with metal ground (2) phase
Even, other end is at the another side of medium substrate (1)；One end of coaxial feeder (4) is the port (10) of antenna, with
The inner wire (12) of feeder shaft (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 coaxial feed low-resistance sidewall Stepped Impedance the most according to claim 1, its feature exists
In the thickness, pcrmeability and the dielectric constant that change medium substrate (1), 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 low frequency work of antenna
Make operating frequency and the operating frequency of high-frequency work frequency band of frequency band.
The slot antenna of a kind of coaxial feed low-resistance sidewall Stepped Impedance the most according to claim 1, its feature exists
In 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), spoke can be regulated
Penetrate the electrical length of the line of rabbet joint (3), to realize antenna miniaturization in various degree, it is also possible to change the low frequency operation frequency of antenna
The operating frequency of band and the operating frequency of high-frequency work frequency band.
The slot antenna of a kind of coaxial feed low-resistance sidewall Stepped Impedance the most according to claim 1, its feature exists
In changing the width radiating the 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 the operating frequency of the low frequency operation frequency band of antenna
Operating frequency with high-frequency work frequency band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218780.6A CN105846103A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed line low resistance sidewall step impedance slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610218780.6A CN105846103A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed line low resistance sidewall step impedance slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846103A true CN105846103A (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610218780.6A Pending CN105846103A (en) | 2016-04-08 | 2016-04-08 | Coaxial feed line low resistance sidewall step impedance slot antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105846103A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006097496A1 (en) * | 2005-03-15 | 2006-09-21 | Fractus, S.A. | Slotted ground-plane used as a slot antenna or used for a pifa antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
| 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 CN201610218780.6A patent/CN105846103A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006097496A1 (en) * | 2005-03-15 | 2006-09-21 | Fractus, S.A. | Slotted ground-plane used as a slot antenna or used for a pifa antenna |
| CN104124527A (en) * | 2014-07-22 | 2014-10-29 | 南京邮电大学 | High-isolation slot antenna array |
| 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: 20160810 |
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| RJ01 | Rejection of invention patent application after publication |