CN105846064A - Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna - Google Patents
Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna Download PDFInfo
- Publication number
- CN105846064A CN105846064A CN201610217418.7A CN201610217418A CN105846064A CN 105846064 A CN105846064 A CN 105846064A CN 201610217418 A CN201610217418 A CN 201610217418A CN 105846064 A CN105846064 A CN 105846064A
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- Prior art keywords
- rabbet joint
- line
- frequency
- antenna
- radiation
- 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.)
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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
- 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
Abstract
The invention relates to a slot antenna and particularly relates to a dual-band capacitor loading stepped-impedance tri-polarized half slot antenna. The tri-polarized half slot antenna comprises three single-polarized antennas (13) which are perpendicular to each other, each antenna (13) comprises a medium substrate (1), and a ground metal (2) and a radiation slot (3) which are on the medium substrate (1), and a microstrip feeder (4), wherein the radiation slot (3) is on the ground metal (2), one end of the radiation slot (3) is in short circuit, the other end (6) of the radiation slot (3) is in open circuit, the portion of the radiation slot (3) close to the open circuit end is provided with multiple capacitors (7) which are in parallel cross connection with an edge of the radiation slot (3) to form a low resistance slot (8), the other part of the radiation slot (3) is a high resistance slot (9), one end of the microstrip feeder (4) is an antenna port (10), and the other end of the microstrip feeder (4) is in open circuit, crosses the high resistance slot (9) and is connected with the ground metal (2) at the edge (11) through a short circuit needle (12). The antenna realizes multiband operation, can reduce the antenna dimension, cross polarization and shielding and improves isolation.
Description
Technical field
The present invention relates to a kind of slot antenna, a kind of Dual Frequency Capacitive loads three polarization half grooves of 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 a kind of Dual Frequency Capacitive and load three polarization half groove skies of 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: the Dual Frequency Capacitive of the present invention loads three polarization half slot antennas of Stepped Impedance and includes three mutually
The capacitive load Stepped Impedance antenna of the single polarization being disposed vertically；The capacitive load 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；At the radiation line of rabbet joint near open end part, several electric capacity is had to be connected in parallel across radiating two of the line of rabbet joint
Edge so that the radiation line of rabbet joint, near the characteristic impedance step-down of open end part, forms the low-resistance line of rabbet joint；The radiation line of rabbet joint
Remainder be the high resistant line of rabbet joint, the high resistant line of rabbet joint constitute together with the low-resistance line of rabbet joint Stepped Impedance radiation line of rabbet joint, produce
Low frequency operation frequency band that one frequency is relatively low and the higher high-frequency work frequency band of a frequency；Also it is described metal
The ground plane of microstrip feed line, one end of microstrip feed line is the port of antenna, the other end of the conduction band of microstrip feed line
Stride across the high resistant line of rabbet joint, at the edge of the high resistant line of rabbet joint, be 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.
Change the quantity of loading capacitance, capacitance and spacing, the characteristic impedance of the low-resistance line of rabbet joint can be regulated, change rank
The height impedance ratio of the impedance that the jumps radiation line of rabbet joint, and then change operating frequency and the high frequency of the low frequency operation frequency band of antenna
The operating frequency of working 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.
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 reduce
To being prone to and feeding transmission lines matching volume, but also reduce the phase velocity of line of rabbet joint transmission line so that half-wavelength radiates
The length of the line of rabbet joint reduces, it is achieved the radiation line of rabbet joint and then the miniaturization of antenna.Dual Frequency Capacitive loads the three of Stepped Impedance
The operating frequency of the operating frequency of low frequency operation frequency band of half slot antenna of polarizing and high-frequency work frequency band is mainly by spoke
The resonant frequency penetrating the line of rabbet joint determines, but the size on metal ground, microstrip feed line conduction band are in the position of the radiation line of rabbet joint also
The operating frequency of antenna and matching degree can be adjusted.Owing to the radiation line of rabbet joint existing low-resistance line of rabbet joint has again height
The resistance line of rabbet joint, constitutes the radiation line of rabbet joint of Stepped Impedance, not only makes antenna miniaturization, reduce cross polarization,
Also reduce the size on metal ground, improve isolation and reduce the occlusion effect on metal ground, but also so that
Antenna has multiple working band, and changes the low-resistance line of rabbet joint and the relative length of the high resistant line of rabbet joint and impedance, Ke Yifen
Tiao Zheng the position of two working bands.Owing to the radiation line of rabbet joint 3 is quarter-wave resonance structure, ratio is logical
The radiation slot length of 1/2nd wavelength of normal two terminal shortcircuits is half as large, therefore the overall dimensions of antenna also phase
Should reduce, occlusion effect reduces further.
Beneficial effect: the Dual Frequency Capacitive of the present invention loads three polarization half slot antennas of Stepped Impedance and provides 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 the three polarization half slot antenna overall structure schematic diagrams that Dual Frequency Capacitive loads Stepped Impedance.
Fig. 2 be Dual Frequency Capacitive load Stepped Impedance three polarization half slot antennas in single polarization capacitive load 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, electric capacity 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 single polarization
Capacitive load 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: Dual Frequency Capacitive loads three polarization half slot antennas of Stepped Impedance and includes
Three capacitive load Stepped Impedance antennas 13 being mutually perpendicular to the single polarization placed；The electric capacity of each single polarization adds
Carry Stepped Impedance antenna 13 include medium substrate 1, the metal that is arranged on medium substrate 1 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 open end part, has several electric capacity 7 to be connected in parallel across radiating two edges of the line of rabbet joint 3 so that radiation
The line of rabbet joint 3, near the characteristic impedance step-down of open end part, forms the low-resistance line of rabbet joint 8；Its remaining part of the radiation line of rabbet joint 7
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 3 together with the low-resistance line of rabbet joint 8, produces
Low frequency operation frequency band that one frequency is relatively low and the higher high-frequency work frequency band of a frequency；Metal ground 2 is also institute
The ground plane of the microstrip feed line 4 stated, one end of microstrip feed line 4 is the port 10 of antenna, microstrip feed line 4
The other end of conduction band 5 strides across the high resistant line of rabbet joint 9, at the edge 11 of the high resistant line of rabbet joint 9, by Shorted post 12 and gold
Possession 2 connects.
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.
Change the quantity of loading capacitance 7, capacitance and spacing, the characteristic impedance of the low-resistance line of rabbet joint 8 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.
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.
Dual Frequency Capacitive loads operating frequency and the height of the low frequency operation frequency band of three polarization half slot antennas of Stepped Impedance
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, Dual Frequency Capacitive loads three polarization half slot antennas of 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.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, select the width of the low-resistance line of rabbet joint 8.On manufacturing, three one poles
The capacitive load Stepped Impedance antenna 13 changed can be mutually perpendicular to be installed together by draw-in groove, or by viscous
Knot agent is mutually perpendicular to be bonded together, 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 Dual Frequency Capacitive loading Stepped Impedance, it is characterised in that this antenna includes
Three capacitive load Stepped Impedance antenna (13) being mutually perpendicular to the single polarization placed；The electric capacity of each single polarization
Load the metal ground that 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 circuit end
Point, there is several electric capacity (7) to be connected in parallel across radiating two edges of the line of rabbet joint (3) so that the radiation line of rabbet joint (3)
Near the characteristic impedance step-down of open end part, form 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
Ground (2) is also the ground plane of described microstrip feed line (4), and one end of microstrip feed line (4) is the end of antenna
Mouth (10), 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 high resistant line of rabbet joint
(9) edge (11), is connected with metal ground (2) by Shorted post (12).
A kind of Dual Frequency Capacitive the most according to claim 1 loads three polarization half slot antennas of Stepped Impedance,
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.
A kind of Dual Frequency Capacitive the most according to claim 1 loads three polarization half slot antennas of Stepped Impedance,
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.
A kind of Dual Frequency Capacitive the most according to claim 1 loads three polarization half slot antennas of Stepped Impedance,
It is characterized in that changing quantity, capacitance and the spacing of loading capacitance (7), 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 work of antenna
Make operating frequency and the operating frequency of high-frequency work frequency band of frequency band.
A kind of Dual Frequency Capacitive the most according to claim 1 loads three polarization half slot antennas of Stepped Impedance,
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)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610217418.7A CN105846064A (en) | 2016-04-08 | 2016-04-08 | Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610217418.7A CN105846064A (en) | 2016-04-08 | 2016-04-08 | Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna |
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| CN105846064A true CN105846064A (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610217418.7A Pending CN105846064A (en) | 2016-04-08 | 2016-04-08 | Dual-band capacitor loading stepped-impedance tri-polarized half slot antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11251534B2 (en) | 2017-12-21 | 2022-02-15 | Huawei Technologies Co., Ltd. | Antenna and terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| 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 CN201610217418.7A patent/CN105846064A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7123200B1 (en) * | 1990-05-02 | 2006-10-17 | Nortel Networks Limited | Sea surface antenna |
| CN104134871A (en) * | 2014-07-22 | 2014-11-05 | 南京邮电大学 | High-isolation semi-groove slot antenna array |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11251534B2 (en) | 2017-12-21 | 2022-02-15 | Huawei Technologies Co., Ltd. | Antenna and terminal |
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Application publication date: 20160810 |