CN109546304A - Compact high-gain dual polarization differential filtering antenna - Google Patents
Compact high-gain dual polarization differential filtering antenna Download PDFInfo
- Publication number
- CN109546304A CN109546304A CN201811327157.XA CN201811327157A CN109546304A CN 109546304 A CN109546304 A CN 109546304A CN 201811327157 A CN201811327157 A CN 201811327157A CN 109546304 A CN109546304 A CN 109546304A
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- medium substrate
- square patch
- metal floor
- split ring
- dual polarization
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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
-
- 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
Abstract
The invention discloses a kind of differential feed dual polarizations of compact high-gain to filter paster antenna, including medium substrate and metal floor；The medium substrate is located at the top of metal floor, and air is filled between the two；Square patch is printed in medium substrate upper surface, and V-type minor matters are printed in medium substrate lower surface, and the V-type minor matters are symmetrical arranged along the diagonal line of medium substrate；Etching defect ground structure on lower metal floor, defect ground structure are made of four split ring gaps, and the opening direction in split ring gap is directed to the center of metal floor, and aforementioned four split ring gap is symmetrical about the diagonal line of metal floor；The square patch is located on the central axes of square patch by coaxial probe differential feed, coaxial probe, and the center point symmetry about square patch.The antenna structure is simple, reduces the loss of antenna feed section, is more suitable for designing with planar antenna array, handling ease, cost and weight are all small, can be mass produced.
Description
Technical field
The present invention relates to a kind of dual-polarized filter antenna, especially a kind of compact high-gain dual polarization differential filtering day
Line.
Background technique
Currently, wireless mobile telecommunication technology develops rapidly, and various new technologies continue to bring out and quickly step into application.As nothing
Two Primary Components in source circuit, antenna and filter play important role in a wireless communication system.A design
Reasonable high performance antenna can also effectively control electromagnetic energy spatial distribution while receiving and transmitting signal, optimize network matter
Amount improves power system capacity, and then greatly improves systematic entirety energy.Microwave filter plays selection signal, decaying noise, avoids
It is the effects of interchannel interference, generally existing in the radio frequency actives circuits such as high performance oscillation, mixing, frequency multiplication and amplification.Antenna
With microwave filter in the systems such as microwave communication, radar navigation, electronic countermeasure, satellite relay, it is widely used, their performances
The excellent overall performance for directly affecting whole system；Their sizes also directly affect the size of whole system size
And portability.With wireless communication personalization, diversified development, the terminal device of high-performance portable is had increasing need for,
Miniaturization and the integrability for having promoted antenna and filter produce various compact-sized, the antennas and microwave that have excellent performance
Filter meets small size, light weight, high performance system requirements.Very crucial work in Research of wireless communication systems,
With highly important research significance.
In radio-frequency front-end system, the two individual devices of general antenna and filter are filtered using direct cascade mode
Except harmonic signal, but the two directly cascades, and needs additional connecting line, and the volume for not only resulting in system in this way increases, also
Additional insertion loss can be brought.Therefore, antenna and the integrated of filter have a very important significance.By antenna and filter
It is integrated, is designed to a module, afterbody of the antenna as filter constitutes filter antenna, not only can reduce day
It is integrated to also help encapsulation for the dimensioned area of line filter system.But such integration mode has biggish size and inserts
Enter loss, influences antenna performance.
Summary of the invention
The purpose of the present invention is to provide a kind of compact high-gain dual polarization differential filtering antennas, which can be in compact knot
Higher gain and filtering performance are realized under structure.
The technical solution for realizing the aim of the invention is as follows: a kind of compact high-gain dual polarization differential filtering antenna, including
Medium substrate and metal floor；The medium substrate is located at the top of metal floor, and air is filled between the two；
Square patch is printed in medium substrate upper surface, and V-type minor matters, V-type minor matters edge are printed in medium substrate lower surface
The diagonal line of medium substrate is symmetrical arranged；Etching defect ground structure on lower metal floor, defect ground structure is by four split rings
Gap composition, the opening direction in split ring gap are directed to the center of metal floor, and aforementioned four split ring gap is about metal
The diagonal line on floor is symmetrical；
The square patch is located on the central axes of square patch by coaxial probe differential feed, coaxial probe, and
Center point symmetry about square patch；
Square patch is connected with metal floor by grounding probe, and the grounding probe is evenly distributed on square
On the diagonal line of patch, and the center point symmetry about square patch.
Compared with prior art, the present invention its remarkable advantage are as follows: 1) of the invention based on defect ground structure and V-type minor matters
Compact high-gain dual polarization differential filtering antenna, not additional filter circuit, can effectively reduce radio-frequency front-end volume and
Additional loss makes antenna have compact structure and higher gain；2) of the invention based on defect ground structure and V-type minor matters
Compact high-gain dual polarization differential filtering antenna make antenna by using full symmetric structure and differential feed mode
It is easy to be extended in dual polarization application, directional diagram is symmetrical and consistent in two polarization directions, and has lower cross-pole
Change；3) the compact high-gain dual polarization differential filtering antenna of the invention based on defect ground structure and V-type minor matters has medium base
Plate and metal floor, structure is simple, handling ease, and cost and weight are all relatively small, can be mass produced.
The present invention is described further with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is a kind of overall structure of compact high-gain dual polarization differential filtering antenna of the present invention, wherein figure (a) is structure
Schematic diagram, figure (b) are cross-sectional view.
Fig. 2 is a kind of the flat of upper and lower surface of compact high-gain dual polarization differential filtering antenna upper layer medium substrate of the present invention
Face schematic diagram, wherein figure (a) is upper layer medium substrate top-plan view, figure (b) is upper layer medium substrate lower surface plan view.
Fig. 3 is a kind of floor map on compact high-gain dual polarization differential filtering antenna lower metal floor of the present invention.
Fig. 4 is the present invention a kind of the V-type minor matters and defect ground structure of compact high-gain dual polarization differential filtering antenna loading
Schematic diagram, wherein figure (a) is V-type minor matters structural schematic diagram, figure (b) is defect ground structure schematic diagram.
Fig. 5 is a kind of reflection characteristic schematic diagram of compact high-gain dual polarization differential filtering antenna of the present invention.
Fig. 6 is a kind of gain schematic diagram varying with frequency of compact high-gain dual polarization differential filtering antenna of the present invention.
Fig. 7 is a kind of radiation direction diagram of the compact high-gain dual polarization differential filtering antenna of the present invention at different frequency
It is intended to, wherein the frequency of figure (a) is 2.37GHz, the frequency of figure (b) is 2.52GHz.
Specific embodiment
In conjunction with attached drawing, a kind of compact high-gain dual polarization differential filtering antenna of the invention, including medium substrate and metal
Floor；The medium substrate 7 is located at the top of metal floor 8, and air is filled between the two；
Square patch 1 is printed in 7 upper surface of medium substrate, and V-type minor matters 2, the V-type branch are printed in 7 lower surface of medium substrate
Section 2 is symmetrical arranged along the diagonal line of medium substrate 7；6 structures of etching defect ground on lower metal floor 8, defect 6 structures by four
A split ring gap 10 forms, and the opening direction in split ring gap 10 is directed to the center of metal floor 8, aforementioned four split ring
Gap 10 is symmetrical about the diagonal line of metal floor 8；
The square patch 1 is located at the central axes of square patch 1 by 4 differential feed of coaxial probe, coaxial probe 4
On, and the center point symmetry about square patch 1；
Square patch 1 is connected with metal floor 8 by grounding probe 3, and the grounding probe 3 is evenly distributed on just
On the diagonal line of square patch 1, and the center point symmetry about square patch 1.
The square patch 1 is located at the center of medium substrate 7, and the V-type minor matters 2 share 4, along medium substrate 7
Diagonal line is symmetrical arranged, and two arms of V-type minor matters 2 extend along 7 diagonal of medium substrate, equal length and is mutually perpendicular to,
Coaxial probe 4 is located at the center of minor matters bending place 9.
The split ring gap 10 is square, and aperture position is located at an angle of square.
The grounding probe 3 shares 4, is symmetricly set on two diagonal lines of square patch 1, square patch 1
Every diagonal line on be respectively provided with two.
Coaxial probe 4 is located at the aperture position in split ring gap 10, and is enclosed in inside split ring gap 10.
The dielectric constant of medium substrate 7 is 2.2,4.4, with a thickness of 0.005 λ, 0.05 λ；Metal floor 8 with a thickness of
0.005 λ, 0.02 λ, medium substrate 7, metal floor 8 are square, and side length G is 0.58 λ, 1.5 λ, medium substrate 7, gold
Distance is 0.005 λ, 0.03 λ between possession plate 8, wherein λ is free space wavelength.
1 size P of square patch2For 0.25 λ, 0.6 λ, the length L of 2 two-arm of V-type minor matters is 0.08 λ, 0.3 λ, width L1For
0.005λ,0.03λ；3 radius R of grounding probe0It is 0.1 λ, 0.45 λ for 0.001 λ, 0.005 λ, the distance between grounding probe 3 W.
Form the 10 size P of split ring gap of 6 structure of defect ground structure1For 0.1 λ, 0.3 λ, the square mouth side length opened
Ds is 0.01 λ, 0.04 λ, 10 width S of split ring gap1For 0.008 λ, 0.03 λ, between two neighboring split ring gap 10 away from
It is 0.01 λ, 0.04 λ from d.
Each coaxial probe 4 and 1 edge distance d of square patchfIt is identical, it is 0.05 λ, 0.3 λ.
Compact high-gain dual polarization differential filtering antenna based on defect ground structure and V-type minor matters of the invention, without volume
Outer filter circuit can effectively reduce the volume and additional loss of radio-frequency front-end, make antenna have compact structure and compared with
High gain.Compact high-gain dual polarization differential filtering antenna of the invention, is made of medium substrate and metal floor, at two
Polarization direction is all by the way of differential probe feed.The antenna includes the medium substrate and metal floor of mounted on top；Copper sheet
It is used as metal floor, etching defect ground structure below；Medium substrate fills air above metal floor between the two.?
The back up V-type metal minor matters of medium, feed probes pass through floor and medium substrate to patch, while connecting V-type branch
Section and patch；In addition, symmetrically introducing grounding probe on the diagonal line of patch, defect ground structure and V-type minor matters are in passband edge
Resonance is generated at frequency and introduces zero point, and the frequency selectivity for improving passband edge realizes filter response.Meanwhile grounding probe introduces
Afterwards, defect ground structure can generate additional resonance point near former resonance point, therefore broaden bandwidth.Antenna is not additional
Filter circuit, therefore there is compact structure and higher gain.In addition, the symmetry and differential feed mode of antenna can drop
The cross polarization of low antenna, and improve the symmetry of directional diagram.
Further detailed description is done to the present invention below with reference to embodiment.
Embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of compact high-gain dual polarization differential filtering antenna of the invention, including be situated between
Matter substrate and metal floor；The upper layer medium substrate 7 is located at the top of metal floor 8, and air is filled between the two；
Square patch 1 is printed in 7 upper surface of upper layer medium substrate, and V-type minor matters 2 are printed in 7 lower surface of medium substrate, along medium
The diagonal line of substrate 7 is symmetrically placed；6 structures of etching defect ground on lower metal floor 8, defect ground 6 structure, four opening circumferential welds
Gap 10 forms, and opening direction is directed toward the center of metal floor 8, and aforementioned four split ring gap 10 is about the oblique right of metal floor 8
Linea angulata is symmetrical；
Square patch 1 is located on the central axes of square patch 1 by 4 differential feed of coaxial probe, coaxial probe 4, and
Center point symmetry about square patch 1；
Square patch 1 is connected with metal floor 8 by grounding probe 3, and the grounding probe 3 is evenly distributed on just
On the diagonal line of square patch 1, and the center point symmetry about square patch 1.
The square patch 1 is located at the center of medium substrate 7, and the V-type minor matters 2 share 4, along medium substrate 7
Diagonal line is symmetrically placed, and two arms of V-type minor matters 2 extend along 7 diagonal of medium substrate, equal length and is mutually perpendicular to,
Coaxial probe 4 is located at the center of minor matters bending place 9.
Split ring gap 10 is square, and aperture position is located at an angle of square.
The grounding probe 3 shares 4, is symmetrically positioned on two diagonal lines of medium substrate 7, square patch 1 it is every
Two are arranged on diagonal line.
Coaxial probe 4 is located at the aperture position in split ring gap 10, and is enclosed in inside split ring gap 10.
The permittivity ε of medium substrate 7rIt is 2.65, with a thickness of 0.0167 λ, metal floor 8 is with a thickness of 0.0083 λ, medium
Substrate 7, metal floor 8 are square, and side length G is 0.83 λ, and distance is between medium substrate 7, metal floor 8
0.0083λ.Wherein λ is free space wavelength.
1 size P of square patch2For 0.38 λ, the length L of 2 two-arm of V-type minor matters is 0.13 λ, width L1For 0.0125 λ；It is short
3 radius R of road probe0For 0.005 λ, the distance between grounding probe 3 on same diagonal line W is 0.275 λ.
Form the 10 size P of split ring gap of 6 structure of defect ground structure1It is for 0.158 λ, the square mouth ds opened
0.021 λ, 10 width S of split ring gap1It is 0.021 λ for 0.0167 λ, the distance between two neighboring split ring gap 10 d.
Each coaxial probe 4 and 1 edge distance d of square patchfFor 0.125 λ.
Refinement explanation is carried out to the details of the embodiment of the present invention and working condition below.
In conjunction with Fig. 5, antenna matches well at centre frequency.
In conjunction with Fig. 6, antenna constant gain with higher in working frequency range, maximum gain 8.3dBi, and working
Band edge has good frequency selectivity, with outer inhibition with higher, inhibits to be greater than 20dB；And there is wider inhibition
Bandwidth inhibits band to be wider than 64%.As can be seen that antenna realizes pair with filtering performance under the structure of compact high-gain
Poliarizing antenna.
The symmetry of antenna radiation pattern is improved, simultaneously using differential feed mode and symmetrical antenna structure in conjunction with Fig. 7
So that antenna has compared with low-cross polarization, cross polarization level is less than -40dB.
From the foregoing, it will be observed that the present invention is realized with filter response paster antenna, antenna is realizing the same of good filtering performance
When do not influence performance in antenna operating band.Antenna has symmetrical directional diagram in two polarization directions, and has lower
Cross polarization.
Claims (9)
1. a kind of compact high-gain dual polarization differential filtering antenna, which is characterized in that including medium substrate and metal floor；It is described
Medium substrate [7] is located at the top of metal floor [8], and air is filled between the two；
Square patch [1] is printed in medium substrate [7] upper surface, and V-type minor matters [2] are printed in medium substrate [7] lower surface, the V
Type minor matters [2] are symmetrical arranged along the diagonal line of medium substrate [7]；Etching defect ground [6] structure on lower metal floor [8], lacks
It falls into ground [6] structure to be made of four split ring gaps [10], the opening direction of split ring gap [10] is directed to metal floor [8]
Center, aforementioned four split ring gap [10] is symmetrical about the diagonal line of metal floor [8]；
The square patch [1] is located at the axis of square patch [1] by coaxial probe [4] differential feed, coaxial probe [4]
On line, and the center point symmetry about square patch [1]；
Square patch [1] is connected with metal floor [8] by grounding probe [3], and the grounding probe [3] is uniformly distributed
On the diagonal line of square patch [1], and the center point symmetry about square patch [1].
2. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that the square patch
Piece [1] is located at the center of medium substrate [7], and the V-type minor matters [2] share 4, and the diagonal line along medium substrate [7] is symmetrically set
It sets, two arms of V-type minor matters [2] extend along medium substrate [7] diagonal, equal length and are mutually perpendicular to, coaxial probe
[4] it is located at the center of minor matters bending place [9].
3. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that the opening circumferential weld
Gap [10] is square, and aperture position is located at an angle of square.
4. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that the grounding probe
[3] 4 are shared, is symmetricly set on two diagonal lines of square patch [1], on every diagonal line of square patch [1]
It is respectively provided with two.
5. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that coaxial probe [4]
Aperture position positioned at split ring gap [10], and it is internal to be enclosed in split ring gap [10].
6. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that medium substrate [7]
Dielectric constant be [2.2,4.4], with a thickness of [0.005 λ, 0.05 λ]；Metal floor [8] with a thickness of [0.005 λ, 0.02 λ],
Medium substrate [7], metal floor [8] are square, and side length G is [0.58 λ, 1.5 λ], medium substrate [7], metal
Distance is [0.005 λ, 0.03 λ] between plate [8], wherein λ is free space wavelength.
7. compact high-gain dual polarization differential filtering antenna according to claim 2, which is characterized in that square patch
[1] size P2For [0.25 λ, 0.6 λ], the length L of V-type minor matters [2] two-arm is [0.08 λ, 0.3 λ], width L1For [0.005 λ,
0.03λ]；Grounding probe [3] radius R0For [0.001 λ, 0.005 λ], the distance between grounding probe [3] W be [0.1 λ, 0.45
λ]。
8. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that tie to composition defect
Split ring gap [10] size P of structure [6] structure1For [0.1 λ, 0.3 λ], the square mouth side length ds opened be [0.01 λ,
0.04 λ], split ring gap [10] width S1For [0.008 λ, 0.03 λ], the distance between two neighboring split ring gap [10] d
For [0.01 λ, 0.04 λ].
9. compact high-gain dual polarization differential filtering antenna according to claim 1, which is characterized in that each coaxial probe
[4] with square patch [1] edge distance dfIt is identical, it is [0.05 λ, 0.3 λ].
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327157.XA CN109546304B (en) | 2018-11-08 | 2018-11-08 | Compact high-gain dual-polarization differential filtering antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811327157.XA CN109546304B (en) | 2018-11-08 | 2018-11-08 | Compact high-gain dual-polarization differential filtering antenna |
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| Publication Number | Publication Date |
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| CN109546304A true CN109546304A (en) | 2019-03-29 |
| CN109546304B CN109546304B (en) | 2020-10-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072267A (en) * | 2020-09-15 | 2020-12-11 | 华南理工大学 | Dual-polarized wide-stop-band filtering antenna and communication equipment |
| CN112736423A (en) * | 2020-12-10 | 2021-04-30 | 重庆大学 | Compact low-profile differential filtering microstrip patch antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204651490U (en) * | 2015-05-25 | 2015-09-16 | 华南理工大学 | High isolation dual polarized difference double frequency mimo antenna |
| CN105720364A (en) * | 2016-04-06 | 2016-06-29 | 华南理工大学 | Dual-polarized filter antenna with high selectivity and low cross polarization |
| CN105958191A (en) * | 2016-04-28 | 2016-09-21 | 南京理工大学 | Dual polarization high gain MIMO antenna based on aperiodic artificial magnetic conductor structure |
| CN106469848A (en) * | 2015-08-20 | 2017-03-01 | 南京理工大学 | A kind of broadband paster antenna based on double resonance pattern |
-
2018
- 2018-11-08 CN CN201811327157.XA patent/CN109546304B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204651490U (en) * | 2015-05-25 | 2015-09-16 | 华南理工大学 | High isolation dual polarized difference double frequency mimo antenna |
| CN106469848A (en) * | 2015-08-20 | 2017-03-01 | 南京理工大学 | A kind of broadband paster antenna based on double resonance pattern |
| CN105720364A (en) * | 2016-04-06 | 2016-06-29 | 华南理工大学 | Dual-polarized filter antenna with high selectivity and low cross polarization |
| CN105958191A (en) * | 2016-04-28 | 2016-09-21 | 南京理工大学 | Dual polarization high gain MIMO antenna based on aperiodic artificial magnetic conductor structure |
Non-Patent Citations (2)
| Title |
|---|
| LIN LI等: "A Differential Microstrip Antenna With Filtering Response", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》 * |
| MENGZHU XUN等: "Novel dual-polarized and closely dual-band filtering patch antenna array with good band-notched function", 《2017 SIXTH ASIA-PACIFIC CONFERENCE ON ANTENNAS AND PROPAGATION (APCAP)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072267A (en) * | 2020-09-15 | 2020-12-11 | 华南理工大学 | Dual-polarized wide-stop-band filtering antenna and communication equipment |
| CN112736423A (en) * | 2020-12-10 | 2021-04-30 | 重庆大学 | Compact low-profile differential filtering microstrip patch antenna |
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| Publication number | Publication date |
|---|---|
| CN109546304B (en) | 2020-10-02 |
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