CN109638427A - The low axis in broadband compares circular polarized antenna - Google Patents
The low axis in broadband compares circular polarized antenna Download PDFInfo
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- CN109638427A CN109638427A CN201811599166.4A CN201811599166A CN109638427A CN 109638427 A CN109638427 A CN 109638427A CN 201811599166 A CN201811599166 A CN 201811599166A CN 109638427 A CN109638427 A CN 109638427A
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of low axis in broadband to compare circular polarized antenna, including what is set gradually from top to bottom: first layer structure, including a pair of of medium tape (1) and rectangular metal frame (2), the placing direction of a pair of of medium tape (1) is consistent and is spaced from each other；Second layer structure, the first medium substrate (3) including offering the first plated-through hole array (7)；Third layer structure, the first metal ground (4) including offering coupling gap (9), the placing direction of the extending direction and medium tape (1) that couple gap (9) form a default angle；Four-layer structure, the second medium substrate (3) including offering the second plated-through hole array (8)；Layer 5 structure, including the second metal (6), the present invention solves the problems, such as that the radiation efficiency faced in the traditional metal antenna of high band is low, solves the problems, such as that existing Broadband-circularlydielectric dielectric resonator antenna designing technique is difficult to obtain the circular polarisation performance in broadband and low axis ratio simultaneously.
Description
Technical field
The present invention relates to the low axis of field of microwave communication more particularly to a kind of broadband to compare circular polarized antenna.
Background technique
In past 50 years, satellite communication has been developed to a more mature stage, more than 400 geostationary orbits
Satellite can provide a variety of services such as military communication, digital broadcasting, mobile phone and data network and deep space remote sensing.And such as
The present, satellite communication system of new generation is coming, this will generate far-reaching influence to human society without doubt.
In order to obtain higher message transmission rate to meet the business demand of the various big data handling capacities such as multimedia, newly
More stringent requirements are proposed for design of the satellite communication system of a generation to antenna.On the one hand, antenna system need it is broadband and
Higher frequency range will be used to obtain bigger absolute bandwidth, such as Ka frequency range even arrives Q/V frequency range, but in the milli of Ka or more
Meter wave frequency band, since metal ohmic loss dramatically increases, radiation efficiency reduces rapidly traditional micro-strip class antenna.Dielectric resonator
Antenna does not have metal ohmic loss, and radiation efficiency with higher is conducive to lifting system performance.On the other hand, in broadband model
Antenna with high circular polarisation purity (axis ratio is less than 1dB) in enclosing can effectively promote message transmission rate, thus will receive greatly to favor.
In this context, the circularly polarized dielectric resonator antenna of the low axis ratio in a broadband is designed, for example, 1dB Circular polarization ratio bandwidth
15% or more, the band downlink of Asian-Pacific area satellite business can be completely covered, there is very important research and application value.
For Broadband-circularlydielectric dielectric resonator antenna, many technical solutions are reported at present.Have using such as rank
The mode of trapezoidal equal special shapes dielectric resonator, has two or more dielectric resonators composition multimode resonance stacked together
The mode of device is also had and is fed or intersected seam feed etc. using special feeding technique traveling wave to realize broadband circle polarized shape
Formula.But these efficient medium resonator antennas be difficult to obtain simultaneously broadband and low axis ratio (such as realize 15% or more 1dB
Axial ratio bandwidth) circular polarisation performance, can only often obtain wider 3dB axial ratio bandwidth, it is difficult to meet satellite communication system of new generation
The requirement united for high circular polarisation purity.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, provide a kind of broadband low axis ratio
Circular polarized antenna.
The technical solution adopted by the present invention to solve the technical problems is: construct a kind of low axis in broadband than circular polarized antenna,
Including what is set gradually from top to bottom:
First layer structure, the rectangular metal frame including a pair of of medium tape and circular the pair of medium tape setting,
The placing direction of the pair of medium tape is consistent and is spaced from each other；
Second layer structure, the first medium substrate including offering the first plated-through hole array；
Third layer structure, the first metal including offering coupling gap, the extending direction in the coupling gap and institute
The placing direction for giving an account of matter tape forms a default angle；
Four-layer structure, the second medium substrate including offering the second plated-through hole array；
Layer 5 structure, including the second metal；
Wherein, the pair of medium tape and first medium substrate constitute medium resonator antenna, third to layer 5 knot
Structure constitutes a chip integrated waveguide slot couple feed structure, and energy is after one end entrance by coupling gap for microwave
Signal is coupled to the medium resonator antenna, and the first plated-through hole array and metal frame constitute back cavity structure to improve
The radiation gain of antenna.
The low axis in broadband described in the embodiment of the present invention than in circular polarized antenna, first to layer 5 structure projection it is outer
Contouring is overlapped and is rectangle, and the coupling gap is set to center and extending direction and first gold medal on the first metal ground
One opposite side in possession is parallel, and a pair of of central point of the pair of medium tape is located at the pair of side on the first metal ground
On the plane of symmetry on side, a pair of of central point of the pair of medium tape also about the first metal ground another opposite side pair
Title face is symmetrical.
Than in circular polarized antenna, the first plated-through hole array includes for the low axis in broadband described in the embodiment of the present invention
Multiple plated-through holes that projection along the rectangular metal frame is arranged in rectangular uniform.
The low axis in broadband described in the embodiment of the present invention is than in circular polarized antenna, the second plated-through hole array packet
It includes: along row's plated-through hole of the direction arrangement for being parallel to the coupling gap, from the both ends of the row plated-through hole
Along the direction arrangement perpendicular to the coupling gap until reaching two rows of plated-through holes of the side on the first metal ground.
The low axis in broadband described in the embodiment of the present invention than in circular polarized antenna, the two rows plated-through holes also simultaneously to
Opposite side has opened up two column plated-through holes to realize impedance matching.
The low axis in broadband of the invention has the advantages that than circular polarized antenna and constitutes Jie using a pair of of medium tape
Matter resonant aerial, this pair of of medium belt item act not only as one and resonance are integrally formed, can also respective independent resonant, institute
The multiple mode of resonance polarization purities generated are high, easily controllable, by merging these high-purity circular polarization patterns, can obtain simultaneously
Obtain the circular polarisation performance of broadband and low axis ratio；The metal back cavity structure being made of plated-through hole array and metal frame is introduced, it should
Structure does not change the radiation mode of antenna, but substantially increases the radiation gain of antenna；In this way, the present invention is solved in high band
The low problem of the radiation efficiency that traditional metal antenna faces, emphasis solve existing Broadband-circularlydielectric dielectric resonator antenna
Designing technique is difficult to obtain the problem of circular polarisation performance of broadband and low axis ratio simultaneously, and the present invention can meet satellite communication of new generation
Requirement of the system for bandwidth and high circular polarisation purity, can effectively cover the band downlink of Asian-Pacific area satellite business.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings:
Fig. 1 is cross-sectional view of the low axis in broadband of the present invention than circular polarized antenna；
Fig. 2 be in Fig. 1 first to layer 5 structure floor map；
Fig. 3 is the antenna in specific embodiment | S11| simulation result schematic diagram；
Fig. 4 is the axis when gain simulation result schematic diagram of the antenna in specific embodiment；
Fig. 5 is the simulation result schematic diagram of antenna in specific embodiment in the directional diagram of different frequency；
Fig. 6 is the schematic diagram of 2 × 2 antenna array structure；
Fig. 7 is the antenna array structure in Fig. 6 | S11| simulation result schematic diagram；
Fig. 8 is the axis when gain simulation result schematic diagram of the antenna array structure in Fig. 6；
Fig. 9 is the simulation result schematic diagram of antenna array structure in Fig. 6 in the directional diagram of different frequency.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give exemplary embodiments of the invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to the disclosure.It answers
When understanding that the specific features in the embodiment of the present invention and embodiment are the detailed description to technical scheme, rather than
Restriction to technical scheme, in the absence of conflict, the technical characteristic in the embodiment of the present invention and embodiment can
To be combined with each other.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
" first ", " second " used in this specification etc. includes that the term of ordinal number can be used for illustrating various constituent elements,
But these constituent elements are not limited by these terms.It is only that using the purpose of these terms and distinguishes a constituent element
In other constituent elements.For example, first constituent element can be named as under the premise of not departing from interest field of the invention
Two constituent elements, similarly, the second constituent element can also be named as the first constituent element.
Cross-sectional view of the low axis in broadband of the present invention than circular polarized antenna with reference to Fig. 1-2, Fig. 1, Fig. 2 be in Fig. 1 first to
The floor map of layer 5 structure.The low axis in broadband of the invention is specific than circular polarized antenna, actually an antenna element
Including the five-layer structure set gradually from top to bottom, upper three arranged scheme from left to right successively expression first to third layer in Fig. 2
Two figures of structure, lower row successively indicate fourth, fifth layer of structure from left to right.
First layer structure, including a pair of of medium tape 1 and around the rectangular metal frame of the pair of medium tape 1 setting
2, the placing direction of the pair of medium tape 1 is consistent and is spaced from each other；
Second layer structure, the first medium substrate 3 including offering the first plated-through hole array 7；
Third layer structure, including offer coupling gap 9 the first metal 4, it is described coupling gap 9 extending direction with
The placing direction of the medium tape 1 forms a default angle；
Four-layer structure, the second medium substrate 3 including offering the second plated-through hole array 8；
Layer 5 structure, including the second metal 6；
More specifically, first to layer 5 structure projection exterior contour be overlapped and be square, the coupling slot
Gap 9 with being set to the first metal 4 center and extending direction with first metal 4 an opposite side it is parallel, such as in figure
It is parallel about front and back side, a pair of of central point of the pair of medium tape 1 with being located at first metal 4 the pair of side
On the plane of symmetry on side, for example in figure on the plane of symmetry of front and back side, a pair of of central point of the pair of medium tape 1 is also closed
In first metal the plane of symmetry of 4 another opposite side is symmetrical, for example the plane of symmetry in figure about left and right side is symmetrical.
Specifically, the first plated-through hole array 7 includes the projection along the rectangular metal frame 2 in rectangular uniform row
Multiple plated-through holes of cloth.
Specifically, the second plated-through hole array 8 includes: to arrange along the direction for being parallel to the coupling gap 9
One row's plated-through hole, from the both ends of the row plated-through hole along the direction arrangement perpendicular to the coupling gap 9 until
With reaching the first metal two rows of plated-through holes of 4 side (such as front side edge is reached in figure), the two rows plated-through hole
Two column plated-through holes also have been opened up to realize impedance matching to opposite side simultaneously, are spaced a spacing between the two column plated-through hole
From the perceptual window of formation.
As it can be seen that the second plated-through hole array 8 is substantially in the arrangement of ∩ type, usually mutiple antennas unit structure in the present embodiment
At aerial array, in other embodiments, if keeping the direction of medium tape consistent with previous embodiment, the second metallization
The arrangement of through-hole array 8, which is then equivalent to, rotates 180 ° for previous embodiment, i.e. the second plated-through hole array is substantially in ∪ type row
Cloth, in this way, can use the antenna element of " the second plated-through hole array 8 is substantially arranged in ∩ type " with " the second metallization is logical
Hole array 8 substantially in ∪ type arrange " antenna element split so that all second plated-through hole arrays of two antenna elements
8 generally rectangular shaped arrangements can refer to Fig. 6.
When the Antenna Operation, wherein the pair of medium tape 1 and first medium substrate 3 constitute medium resonator antenna,
This pair of of medium belt item acts not only as one and resonance is integrally formed, can also respective independent resonant, it is generated multiple humorous
Vibration mode polarization purity is high, easily controllable, by tuning the 1dB axial ratio bandwidth that can be obtained greater than 16%.Third is to layer 5
Structure constitutes a chip integrated waveguide slot couple feed structure, and energy will by coupling gap 9 after one end entrance
Microwave signal is coupled to the medium resonator antenna, which can provide 3 high-purity circular polarization patterns,
And it is easily controllable, antenna can be made to obtain the performance of broadband and low axis ratio, the first plated-through hole array 7 and metal frame 2
Back cavity structure is constituted to improve the radiation gain of antenna, is greater than 10dBi with interior maximum gain.Due to symmetrical configuration, which exists
There is good radiance, directional diagram is symmetrical in frequency band.
In a specific example, the permittivity ε for the ceramic material that medium tape 1 usesr=20.5, loss angle
δ=1.4 × 10 tan-4；The material of medium substrate 3 and medium substrate 4 is Rogers 4003C (εr=3.38, tan δ=
0.0027).The transmission response (gain) of antenna, rdaiation response (| S11|) and axis than curve, can be with reference to shown in Fig. 3,4, it is seen that
Its work is in satellite communication frequency range, 10-dB coupling bandwidth > 25%, and highest-gain is 10dBi in frequency band, and 3dB axial ratio bandwidth is
24%, 1dB axial ratio bandwidth are 16%.Three figures in Fig. 5 under upper successively illustrate that in 11GHz, 11.7GHz and
Antenna at 12.8GHz emulates directional diagram, it is seen that the directional diagram of antenna is stablized symmetrically with interior holding.
It is previously mentioned, antenna of the invention is used primarily as antenna element, and usually mutiple antennas unit constitutes day
Linear array.For example, Fig. 6 gives the schematic diagram of 2 × 2 antenna array structure, the antenna in the array structure, in Fig. 1
On the basis of, the layer 6 structure below layer 5 structure is also added, which is specially one layer based on base
The power division network of piece integrated waveguide, Fig. 7 are the antenna array structures in Fig. 6 | S11| simulation result schematic diagram；Fig. 8 is in Fig. 6
Antenna array structure axis when gain simulation result schematic diagram；Fig. 9 is the emulation of the antenna array structure directional diagram in Fig. 6
Result schematic diagram, wherein the picture left above is the directional diagram of 11.3GHz, xoz plane, and top right plot is the direction of 11.3GHz, yoz plane
Figure, lower-left figure is 12.4GHz, and the directional diagram of xoz plane, bottom-right graph is 12.4GHz, the directional diagram of yoz plane.
In conclusion the low axis in broadband of the invention than circular polarized antenna, has the advantages that using a pair of of medium belt
Item constitutes medium resonator antenna, this pair of of medium belt item acts not only as one and resonance is integrally formed, can also respectively solely
Vertical resonance, generated multiple mode of resonance polarization purities are high, easily controllable, by merging these high-purity circular polarization patterns,
The circular polarisation performance in broadband and low axis ratio can be obtained simultaneously；Introduce the metal back being made of plated-through hole array and metal frame
Cavity configuration, the structure do not change the radiation mode of antenna, but substantially increase the radiation gain of antenna；In this way, the present invention solves
In the low problem of the radiation efficiency that the traditional metal antenna of high band faces, emphasis solves existing broadband circle polarized medium
Resonant aerial designing technique is difficult to obtain the problem of circular polarisation performance of broadband and low axis ratio simultaneously, and the present invention can meet new one
The satellite communication system of requirement for to(for) bandwidth and high circular polarisation purity can effectively cover the downlink frequency of Asian-Pacific area satellite business
Section.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (5)
1. a kind of low axis in broadband compares circular polarized antenna, which is characterized in that including what is set gradually from top to bottom:
First layer structure, including a pair of of medium tape (1) and around the rectangular metal frame of the pair of medium tape (1) setting
(2), the placing direction of the pair of medium tape (1) is consistent and is spaced from each other；
Second layer structure, the first medium substrate (3) including offering the first plated-through hole array (7)；
Third layer structure, the first metal ground (4) including offering coupling gap (9), the extending direction of coupling gap (9)
A default angle is formed with the placing direction of the medium tape (1)；
Four-layer structure, the second medium substrate (3) including offering the second plated-through hole array (8)；
Layer 5 structure, including the second metal ground (6)；
Wherein, the pair of medium tape (1) and first medium substrate (3) constitute medium resonator antenna, third to layer 5
Structure constitutes a chip integrated waveguide slot couple feed structure, and energy passes through coupling gap (9) after one end entrance
Microwave signal is coupled to the medium resonator antenna, the first plated-through hole array (7) and metal frame (2) constitute back
Cavity configuration is to improve the radiation gain of antenna.
2. the low axis in broadband according to claim 1 compares circular polarized antenna, which is characterized in that first to layer 5 structure throwing
The exterior contour of shadow is overlapped and is rectangle, coupling gap (9) with being set to the first metal center of (4) and extending direction
With first metal an opposite side of (4) is parallel, and a pair of of central point of the pair of medium tape (1) is located at described first
Metal on the plane of symmetry of the pair of side of (4), a pair of of central point of the pair of medium tape (1) is also about described
One metal another opposite side of (4) the plane of symmetry it is symmetrical.
3. the low axis in broadband according to claim 1 compares circular polarized antenna, which is characterized in that the first plated-through hole battle array
Column (7) include: the multiple plated-through holes arranged along the projection of the rectangular metal frame (2) in rectangular uniform.
4. the low axis in broadband according to claim 1 compares circular polarized antenna, which is characterized in that the second plated-through hole battle array
Column (8) include: to metallize along row's plated-through hole of the direction arrangement for being parallel to coupling gap (9), from a row
The both ends of through-hole are along the direction arrangement perpendicular to coupling gap (9) until with reaching the first metal two rows of the side of (4)
Plated-through hole.
5. the low axis in broadband according to claim 4 compares circular polarized antenna, which is characterized in that the two rows plated-through holes are also
Two column plated-through holes have been opened up to realize impedance matching to opposite side simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811599166.4A CN109638427B (en) | 2018-12-26 | 2018-12-26 | Broadband low axial ratio circularly polarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811599166.4A CN109638427B (en) | 2018-12-26 | 2018-12-26 | Broadband low axial ratio circularly polarized antenna |
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| CN109638427A true CN109638427A (en) | 2019-04-16 |
| CN109638427B CN109638427B (en) | 2020-09-15 |
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| CN110739531A (en) * | 2019-10-18 | 2020-01-31 | 瑞声科技(新加坡)有限公司 | antenna unit, antenna module and electronic equipment |
| CN111834737A (en) * | 2020-07-13 | 2020-10-27 | 南通大学 | Dual-band dielectric resonator antenna for millimeter wave application |
| CN112153833A (en) * | 2019-06-28 | 2020-12-29 | Oppo广东移动通信有限公司 | Shell assembly, antenna device and electronic equipment |
| CN112259958A (en) * | 2020-10-14 | 2021-01-22 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
| CN112259967A (en) * | 2020-11-05 | 2021-01-22 | 西安电子科技大学 | Wide-beam dielectric resonator antenna |
| CN112952388A (en) * | 2021-02-18 | 2021-06-11 | 大连海事大学 | Broadband circularly polarized microstrip antenna with wide axial ratio wave beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112153833A (en) * | 2019-06-28 | 2020-12-29 | Oppo广东移动通信有限公司 | Shell assembly, antenna device and electronic equipment |
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| CN112259958A (en) * | 2020-10-14 | 2021-01-22 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
| CN112259958B (en) * | 2020-10-14 | 2022-03-08 | 西安交通大学 | Single-feed double-frequency double-circular-polarization millimeter wave dielectric resonator antenna |
| CN112259967A (en) * | 2020-11-05 | 2021-01-22 | 西安电子科技大学 | Wide-beam dielectric resonator antenna |
| CN112259967B (en) * | 2020-11-05 | 2021-07-27 | 西安电子科技大学 | Wide-beam dielectric resonator antenna |
| CN112952388A (en) * | 2021-02-18 | 2021-06-11 | 大连海事大学 | Broadband circularly polarized microstrip antenna with wide axial ratio wave beam |
| CN112952388B (en) * | 2021-02-18 | 2022-08-05 | 大连海事大学 | Broadband circularly polarized microstrip antenna with wide axial ratio wave beam |
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| Publication number | Publication date |
|---|---|
| CN109638427B (en) | 2020-09-15 |
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