CN109390695A - A kind of corner-fed double polarized micro strip antenna device of slot-coupled - Google Patents
A kind of corner-fed double polarized micro strip antenna device of slot-coupled Download PDFInfo
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- CN109390695A CN109390695A CN201811437526.0A CN201811437526A CN109390695A CN 109390695 A CN109390695 A CN 109390695A CN 201811437526 A CN201811437526 A CN 201811437526A CN 109390695 A CN109390695 A CN 109390695A
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- corner
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- fed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
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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
- H01Q13/106—Microstrip slot antennas
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Abstract
The present invention relates to microwaves and antenna technical field, specifically one kind can be used for satellite remote sensing, navigation, aircraft remote-control romote-sensing, mobile communication, the corner-fed double polarized micro strip antenna device of slot-coupled in the radio systems such as radar detection, it is characterized in that being equipped with the double-deck microwave-medium substrate, wherein square patch radiator is located at the upper surface of upper layer medium substrate, and it is equipped with the microstrip line that side feedback is carried out with square patch radiator, the lower surface of upper layer medium substrate is metallic conduction copper clad layers, two rectangular apertures are etched in the position that metallic conduction copper clad layers correspond to the adjacent corner of rectangular patch radiator side feedback, form the corner-fed incentive structure of slot-coupled；The lower surface arrangement microstrip line of layer dielectric substrate implements electromagnetic coupling excitation to gap, compared with prior art, the present invention having preferable polarization characteristic and pattern characteristics with of simple structure and low cost.
Description
Technical field:
The present invention relates to microwave and antenna technical field, specifically one kind can be used for satellite remote sensing, navigation, aircraft
The corner-fed double polarized micro strip antenna device of slot-coupled in the radio systems such as remote-control romote-sensing, mobile communication, radar detection.
Background technique:
Dual polarized antenna is the sensor device of Dual-polarized electricity subsystem, in practical projects, the design of dual polarized antenna
It is very crucial.Common dual polarized antenna has double polarized micro strip antenna, dual-polarized element antenna, dual-polarization horn antenna and bipolar
Change slot antenna etc..Wherein, double polarized micro strip antenna is a kind of one of common form, due to its low section, low cost and spirit
Performance living, is widely applied.
There are many feeding classifications of microstrip antenna, such as micro-strip line side is presented, the feedback of coaxial line bottom, aperture-coupled, closed on
Couple feed etc..Microstrip antenna causes its application to be greatly restricted because the characteristics of its intrinsic narrow bandwidth.In order to expand
The bandwidth of microstrip antenna, 1984, Pozar was put forward for the first time aperture-coupled microstrip antenna, which has been isolated transmission network
Network and radiation patch reduce influence of the feeding network stray wave to radiation patch, overcome traditional feeding classification bring electricity
Feel effect.Corner-fed is a kind of new microband paste feeding classification.
Summary of the invention:
The present invention is directed to shortcoming and defect existing in the prior art, and proposing one kind can be used for satellite remote sensing, navigation, flies
The corner-fed double polarized micro strip antenna device of slot-coupled in the radio systems such as row device remote-control romote-sensing, mobile communication, radar detection.
The present invention can be achieved by the following measures:
A kind of corner-fed double polarized micro strip antenna device of slot-coupled, it is characterised in that it is equipped with the double-deck microwave-medium substrate,
Middle square patch radiator is located at the upper surface of upper layer medium substrate, and is equipped with the micro-strip that side feedback is carried out with square patch radiator
The lower surface of line, upper layer medium substrate is metallic conduction copper clad layers, corresponds to rectangular patch radiator side in metallic conduction copper clad layers
The position of the adjacent corner of feedback etches two rectangular apertures, forms the corner-fed incentive structure of slot-coupled；Layer dielectric substrate
Lower surface arrangement microstrip line to gap implement electromagnetic coupling excitation.
It is additionally provided with the impedance being connected with the microstrip line of side feedback in the present invention and deploys minor matters, and circular resonant is used in allotment
Chamber.
The size of square patch meets formula (1) in the present invention:In formula: frFor patch
Piece resonance frequency；A' is the equivalent length of side of patch；εefFor equivalent relative dielectric constant.Resonant resistance RAWith fr、wjAnd h is related,
Empirical equation are as follows:
wjAnd h meetsThe calculated value of resonance frequency and the mistake of test value
It is poor minimum.
Perpendicular positional relationship is presented in feeding microstrip line and microband paste in the present invention, can form dual-polarized radiation
, compared with traditional coaxial feed or side are presented, the major advantage of slot-coupled is its feeding network and passive radiation unit point
It is not placed on two layers of dielectric-slab, can optimize respectively, and radiant section is separated with feeding line portion, feeder line is posted
Raw radiation is weak, convenient for extensive group battle array；There is the isolation of enough bandwidth again simultaneously, it is easier to form dual polarized antenna.Micro-strip
Slot antenna can be regarded as the microstrip line of a discontinuous structure.It includes an ideal transformer, radiation admittance with
The slot line that one two terminal shortcircuit terminates, equivalent circuit can use Fig. 5 approximation explanation.For microstrip line-line of rabbet joint electromagnetic coupling
Mechanism, microstrip line and the line of rabbet joint are located at the two sides of medium substrate, and intersection is placed between them, and electromagnetic coupling is utilized to realize energy
Conversion；In order to improve impedance bandwidth, round minor matters are loaded in the end of microstrip line, adjust microstrip line minor matters and the line of rabbet joint when appropriate
In the case where tip dimensions parameter, microstrip line-line of rabbet joint electromagnetic coupling mechanisms are equivalent to a transformer device structure.
In conclusion using the corner-fed dual polarized microstrip patch antenna structure of slot-coupled, the day the invention proposes a kind of
Line is folded into using the double-deck microwave circuit substrate layer, of simple structure and low cost, has preferable polarization characteristic and directional diagram special
Property.What the present invention designed is suitably applied satellite remote sensing, navigation, flight using the corner-fed dual polarized microstrip patch antenna of slot-coupled
In the electronic systems such as device remote-control romote-sensing, wireless communication and radar, important more important engineering application value.
Detailed description of the invention:
Attached drawing 1 is structural schematic diagram of the invention.
Attached drawing 2 is that the present invention conceals and couples gap schematic diagram on the floor after medium substrate.
Attached drawing 3 is the structural schematic diagram that corner-fed square patch radiator is used in the present invention.
Attached drawing 4 is feeding classification schematic diagram of the present invention, and Fig. 4 (a) is main view, and Fig. 4 (b) is rearview.
Attached drawing 5 is the equivalent circuit that microstrip gap couples in the present invention.
Attached drawing 6 is circuit characteristic simulation result diagram in the embodiment of the present invention, and wherein Fig. 6 (a) is port 1 as a result, Fig. 6 (b)
For port 2 as a result, Fig. 6 (c) is polarization interport isolation result.
Attached drawing 7 is the radiation characteristic simulation result diagram of middle port of the embodiment of the present invention 1, and wherein Fig. 7 is the three-dimensional gain side (a)
Xiang Tu, Fig. 7 (b) they are three-dimensional shafts than directional diagram, and 7 (c) be the gain pattern in the face xoz, and 7 (d) be the axis in the face xoz than directional diagram, 7
(e) be the face yoz gain pattern, 7 (f) be that the axis in the face yoz compares directional diagram.
Attached drawing 8 is the radiation characteristic simulation result of the port 2 of double polarized micro strip antenna in the embodiment of the present invention, wherein 8 (a)
It is three-dimensional gain pattern, 8 (b) be three-dimensional shaft than directional diagram, and 8 (c) be the gain pattern in the face xoz, and 8 (d) be the axis in the face xoz
Than directional diagram, 8 (e) be the gain pattern in the face yoz, and 8 (f) be that the axis in the face yoz compares directional diagram.
Specific embodiment:
The present invention has studied a kind of corner-fed dual polarized microstrip patch antenna system and device of slot-coupled, and the antenna is by double-deck micro-
Wave medium substrate composition；Rectangular microband paste is located at the upper surface of upper layer medium substrate；The lower surface of upper layer medium substrate is gold
Belong to conductive copper clad layers, etches two rectangular slits in the position of the adjacent corner of the correspondence square patch of metallic conduction copper clad layers
Gap forms the corner-fed incentive structure of slot-coupled；The lower surface arrangement microstrip line of layer dielectric substrate implements electromagnetism coupling to gap
Close excitation.The corner-fed dual polarized microstrip patch antenna system model of the slot-coupled that the present invention designs is as shown in Figure 1.In Fig. 1,1
It is coupling gap for square patch radiator, 2；3 microstrip lines presented for side, 4 be that minor matters are deployed in impedance, and 5 use circle humorous for allotment
Shake chamber, and 6 be transformer section.Fig. 2 be hide medium substrate after floor on couple gap schematic diagram, convenient for show gap position
It sets.
Corner-fed square patch generates radiation field by the fringing field between unit four edges and earth plate, and sum total is at field
TE10Mould and TE01The superposition of mould, main polarization is vertical polarization, as shown in Figure 3.The size of square patch meets formula (1):
In formula: frFor patch resonant frequency；A' is the equivalent length of side of patch；εefFor equivalent relative dielectric constant.Resonance electricity
Hinder RAWith fr、wjAnd h is related, empirical equation are as follows:
wjAnd h preferably meetsThe calculated value of resonance frequency and the error of test value are minimum.
Series feed network geometry structural model in the present invention can be seen as shown in figure 4, including front view and rearview
Out, perpendicular positional relationship is presented in feeding microstrip line and microband paste, can form dual-polarized radiation field.With it is traditional same
Axis feed or side feedback are compared, and the major advantage of slot-coupled is that its feeding network and passive radiation unit are respectively disposed on two layers of Jie
It on scutum, can optimize respectively, and radiant section is separated with feeding line portion, the parasitic radiation of feeder line is weak, is convenient for
Extensive group battle array；There is the isolation of enough bandwidth again simultaneously, it is easier to form dual polarized antenna.Microstrip slot antenna can be seen
Work is the microstrip line of a discontinuous structure.It includes an ideal transformer, and a radiation admittance and two terminal shortcircuits are whole
Slot line only, equivalent circuit can use Fig. 5 approximation explanation.For microstrip line-line of rabbet joint electromagnetic coupling mechanisms, microstrip line and slot
Line is located at the two sides of medium substrate, and intersection is placed between them, and electromagnetic coupling is utilized to realize the conversion of energy；In order to improve
Impedance bandwidth loads round minor matters in the end of microstrip line, when suitably adjusting microstrip line minor matters and line of rabbet joint tip dimensions parameter
In the case of, microstrip line-line of rabbet joint electromagnetic coupling mechanisms are equivalent to a transformer device structure.In figure: n1For the coupling in gap and patch
Collaboration number；n2For the coefficient of coup of feeder line and gap；YpatchAnd YapThe respectively admittance of patch and gap.
Embodiment:
The present invention devises the specific corner-fed dual polarized microstrip patch antenna device of slot-coupled, using full-wave electromagnetic
Simulation software has carried out performance simulation to the aerial array, and the simulation experiment result demonstrates slot-coupled angle proposed by the invention
Present the feasibility and validity of dual polarized microstrip patch antenna device.
The circuit characteristic of the corner-fed dual polarized microstrip patch antenna of the slot-coupled that the present invention designs is as shown in fig. 6, can by figure
See, in central task frequency point f0On, the return loss of the port 1 (micro-strip line side presents port) of the antenna is about -15dB, port 2
The return loss of (presenting port in coaxial line bottom) is about lower than -12dB, and interport isolation is about -35dB.
In order to characterize the radiation characteristic of the antenna, Fig. 7 and Fig. 8 are given at frequency f respectively0When antenna radiation gain side
Simulation result to figure with axis than directional diagram.In working frequency points, the corner-fed dual polarized microstrip patch antenna of the slot-coupled of design
The radiation gain of port 1 be about 2.8dB, main radiation direction axis ratio is greater than 26dB；The radiation gain of port 1 is about 2.6dB, main
Radiation direction axis ratio is greater than 30dB.
In conclusion using the corner-fed dual polarized microstrip patch antenna structure of slot-coupled, the day the invention proposes a kind of
Line is folded into using the double-deck microwave circuit substrate layer, of simple structure and low cost, has preferable polarization characteristic and directional diagram special
Property.What the present invention designed is suitably applied satellite remote sensing, navigation, flight using the corner-fed dual polarized microstrip patch antenna of slot-coupled
In the electronic systems such as device remote-control romote-sensing, wireless communication and radar, important more important engineering application value.
Claims (4)
1. a kind of corner-fed double polarized micro strip antenna device of slot-coupled, it is characterised in that it is equipped with the double-deck microwave-medium substrate, wherein
Square patch radiator is located at the upper surface of upper layer medium substrate, and is equipped with the micro-strip that side feedback is carried out with square patch radiator
The lower surface of line, upper layer medium substrate is metallic conduction copper clad layers, corresponds to rectangular patch radiator side in metallic conduction copper clad layers
The position of the adjacent corner of feedback etches two rectangular apertures, forms the corner-fed incentive structure of slot-coupled；Layer dielectric substrate
Lower surface arrangement microstrip line to gap implement electromagnetic coupling excitation.
2. the corner-fed double polarized micro strip antenna device of a kind of slot-coupled according to claim 1, it is characterised in that be additionally provided with
Minor matters are deployed in the impedance being connected with the microstrip line of side feedback, and circular resonant cavity is used in allotment.
3. the corner-fed double polarized micro strip antenna device of a kind of slot-coupled according to claim 1, it is characterised in that rectangular patch
The size of piece meets formula (1):In formula: frFor patch resonant frequency；A' is patch
Equivalent length of side；εefFor equivalent relative dielectric constant, resonant resistance RAWith fr、wjAnd h is related, empirical equation are as follows:
wjAnd h meetsThe error of the calculated value of resonance frequency and test value is most
It is small.
4. the corner-fed double polarized micro strip antenna device of a kind of slot-coupled according to claim 1, it is characterised in that feed is micro-
Perpendicular positional relationship is presented in band line and microband paste, forms dual-polarized radiation field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811437526.0A CN109390695A (en) | 2018-11-28 | 2018-11-28 | A kind of corner-fed double polarized micro strip antenna device of slot-coupled |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811437526.0A CN109390695A (en) | 2018-11-28 | 2018-11-28 | A kind of corner-fed double polarized micro strip antenna device of slot-coupled |
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| CN109390695A true CN109390695A (en) | 2019-02-26 |
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| CN201811437526.0A Pending CN109390695A (en) | 2018-11-28 | 2018-11-28 | A kind of corner-fed double polarized micro strip antenna device of slot-coupled |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048223A (en) * | 2019-03-26 | 2019-07-23 | 济南爱我本克网络科技有限公司 | A kind of C-band high power antenna |
| CN112952370A (en) * | 2021-02-01 | 2021-06-11 | 中国科学院重庆绿色智能技术研究院 | Transparent dual-frequency dual-polarization small antenna and preparation method thereof |
| CN114824774A (en) * | 2022-05-05 | 2022-07-29 | 电子科技大学 | Broadband high-isolation dual-polarization super-surface antenna |
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2018
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048223A (en) * | 2019-03-26 | 2019-07-23 | 济南爱我本克网络科技有限公司 | A kind of C-band high power antenna |
| CN110048223B (en) * | 2019-03-26 | 2023-06-09 | 创意银航(山东)技术有限公司 | C-band high-power antenna |
| CN112952370A (en) * | 2021-02-01 | 2021-06-11 | 中国科学院重庆绿色智能技术研究院 | Transparent dual-frequency dual-polarization small antenna and preparation method thereof |
| CN112952370B (en) * | 2021-02-01 | 2022-07-05 | 中国科学院重庆绿色智能技术研究院 | Transparent dual-frequency dual-polarization small antenna and preparation method thereof |
| CN114824774A (en) * | 2022-05-05 | 2022-07-29 | 电子科技大学 | Broadband high-isolation dual-polarization super-surface antenna |
| CN114824774B (en) * | 2022-05-05 | 2023-03-24 | 电子科技大学 | Broadband high-isolation dual-polarization super-surface antenna |
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Application publication date: 20190226 |