CN105846085A - Coplanar waveguide feed capacitor loading slot antenna - Google Patents
Coplanar waveguide feed capacitor loading slot antenna Download PDFInfo
- Publication number
- CN105846085A CN105846085A CN201610216304.0A CN201610216304A CN105846085A CN 105846085 A CN105846085 A CN 105846085A CN 201610216304 A CN201610216304 A CN 201610216304A CN 105846085 A CN105846085 A CN 105846085A
- Authority
- CN
- China
- Prior art keywords
- line
- rabbet joint
- radiation
- antenna
- coplanar waveguide
- Prior art date
- 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.)
- Pending
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Classifications
-
- 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
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention relates to a coplanar waveguide feed capacitor loading slot antenna. The antenna comprises a medium substrate (1), a metal ground (2) and a radiation slot (3) which are on the medium substrate (1), and a coplanar waveguide feeder (4), wherein the radiation slot (3) is on the metal ground (2), two ends of the radiation slot (3) are in short circuit, multiple capacitors (7) are in parallel cross connection with two edges of the radiation slot (3), one end of the coplanar waveguide feeder (4) is a port (8) of the antenna, and a conductor (9) of the other end of the coplanar waveguide feeder (4) crosses the radiation slot (3) and is connected with the metal ground (2) at the edge (10) of the radiation slot (3). The slot antenna is advantaged in that antenna dimensions and cross polarization are reduced.
Description
Technical field
The present invention relates to a kind of slot antenna, the slot antenna of a kind of coplanar wave guide feedback capacitive load.
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.
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 capacitive load, this antenna is permissible
Reduce length and the area on metal ground of the radiation line of rabbet joint, and there is the cross-polarized effect of suppression.
Technical scheme: the slot antenna of the coplanar wave guide feedback capacitive load of the present invention includes medium substrate, is arranged on medium
Metal ground on substrate and the radiation line of rabbet joint, coplanar waveguide feeder line；The one side of medium substrate be metal and coplanar waveguide feeder line,
The ground plane of coplanar waveguide feeder line is exactly metal ground；Metal has the radiation line of rabbet joint on the ground, and the shape of the radiation line of rabbet joint is rectangle, spoke
Penetrate the line of rabbet joint and be positioned at the center on metal ground；Two terminal shortcircuits of the radiation line of rabbet joint；Several electric capacity is had to be connected in parallel across radiating the two of the line of rabbet joint
Individual edge so that the characteristic impedance step-down of the radiation line of rabbet joint；One end of coplanar waveguide feeder line is the port of antenna, co-planar waveguide
The conductor of the feeder line other end strides across the radiation line of rabbet joint, radiation the line of rabbet joint edge, with metal be connected.
Change the quantity of loading capacitance, capacitance and spacing, the characteristic impedance of the radiation line of rabbet joint can be regulated, thus it is possible to vary antenna
Operating frequency, the width of working band and radiation the line of rabbet joint electrical length.
Electric capacity parallel connection is loaded into two edges of the radiation line of rabbet joint, not only makes the characteristic impedance of line of rabbet joint transmission line be reduced to be prone to
With feeding transmission lines matching volume, but also reduce the phase velocity of line of rabbet joint transmission line so that the length of the half-wavelength radiation line of rabbet joint subtracts
Little, it is achieved the radiation line of rabbet joint and then the miniaturization of antenna.The operating frequency master of the slot antenna of coplanar wave guide feedback capacitive load
To be determined by the resonant frequency of the radiation line of rabbet joint, but the size on metal ground, coplanar waveguide feeder line conductor are connected with the radiation line of rabbet joint
Position the operating frequency of antenna and matching degree can also be adjusted.
Beneficial effect: the slot antenna of the coplanar wave guide feedback capacitive load of the present invention provides the benefit that, this antenna is permissible
Reduce the electric size of whole antenna, realize miniaturization, the most also there is the cross polarization effect of suppression antenna.
Accompanying drawing explanation
Fig. 1 is the slot antenna overall structure schematic diagram of coplanar wave guide feedback capacitive load.
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,
Electric capacity 7, port 8, conductor 9 and edge 10.
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 capacitive load include medium substrate 1,
The metal ground 2 being arranged on medium substrate 1 and the radiation line of rabbet joint 3, coplanar waveguide feeder line 4；The one side of medium substrate 1 is
Metal ground 2 and coplanar waveguide feeder line 4, the ground plane 5 of coplanar waveguide feeder line 4 is exactly metal ground 2；Have on metal ground 2
The radiation line of rabbet joint 3, 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；The radiation line of rabbet joint 3
Two ends 6 short circuit；Several electric capacity 7 is had to be connected in parallel across radiating two edges of the line of rabbet joint 3 so that the spy of the radiation line of rabbet joint 3
Property impedance step-down；One end of coplanar waveguide feeder line 4 is the port 8 of antenna, the conductor 9 of coplanar waveguide feeder line 4 other end
Stride across the radiation line of rabbet joint 3, at the edge 10 of the radiation line of rabbet joint 3, be connected with metal ground 2.
Change the quantity of loading capacitance 7, capacitance and spacing, the characteristic impedance of the radiation line of rabbet joint 3 can be regulated, thus it is possible to vary
The operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint 3.
The operating frequency of the slot antenna of coplanar wave guide feedback capacitive load is mainly determined by the resonant frequency of the radiation line of rabbet joint 3,
But the position that the size on metal ground 2, coplanar waveguide feeder line conductor 9 are connected with the radiation line of rabbet joint 3 can also be to the work of antenna
Working frequency and matching degree are adjusted.
In technique, the slot antenna of coplanar wave guide feedback capacitive load both can use common printed circuit board (PCB) (PCB)
Technique, it would however also be possible to employ the integrated circuit technologies such as LTCC (LTCC) technique or CMOS, Si substrate realize.
Electric capacity 7 can select the patch capacitor 7 of corresponding encapsulation according to operating frequency, and according to the distance of electric capacity 7 two pins electrode,
The width of the selective radiation line of rabbet joint 3.
In accordance with the above, the present invention can just be realized.
Claims (2)
1. the slot antenna of a coplanar wave guide feedback capacitive load, it is characterised in that this antenna include medium substrate (1),
Metal ground (2) being arranged on medium substrate (1) and the radiation line of rabbet joint (3), coplanar waveguide feeder line (4)；Medium substrate
(1) one side is metal ground (2) and coplanar waveguide feeder line (4), and the ground plane (5) of coplanar waveguide feeder line (4) is just
It is metal ground (2)；Having the radiation line of rabbet joint (3) on metal ground (2), the shape of the radiation line of rabbet joint (3) is rectangle, radius
The center of seam (3) with being positioned at metal (2)；Two ends (6) short circuit of the radiation line of rabbet joint (3)；There is several electric capacity (7)
It is connected in parallel across radiating two edges of the line of rabbet joint (3) so that the characteristic impedance step-down of the radiation line of rabbet joint (3)；Co-planar waveguide
One end of feeder line (4) is the port (8) of antenna, and the conductor (9) of coplanar waveguide feeder line (4) other end strides across radiation
The line of rabbet joint (3), radiation the line of rabbet joint (3) edge (10), with metal (2) be connected.
The slot antenna of a kind of coplanar wave guide feedback capacitive load the most according to claim 1, it is characterised in that change
Become quantity, capacitance and the spacing of loading capacitance (7), the characteristic impedance of the radiation line of rabbet joint (3) can be regulated, thus it is possible to vary
The operating frequency of antenna, the width of working band and the electrical length of the radiation line of rabbet joint (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216304.0A CN105846085A (en) | 2016-04-08 | 2016-04-08 | Coplanar waveguide feed capacitor loading slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216304.0A CN105846085A (en) | 2016-04-08 | 2016-04-08 | Coplanar waveguide feed capacitor loading slot antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846085A true CN105846085A (en) | 2016-08-10 |
Family
ID=56596985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216304.0A Pending CN105846085A (en) | 2016-04-08 | 2016-04-08 | Coplanar waveguide feed capacitor loading slot antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105846085A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | 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 |
-
2016
- 2016-04-08 CN CN201610216304.0A patent/CN105846085A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| US20080316118A1 (en) * | 2005-03-15 | 2008-12-25 | 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 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |