CN105811098A - Broadband circularly-polarized high-gain antenna - Google Patents
Broadband circularly-polarized high-gain antenna Download PDFInfo
- Publication number
- CN105811098A CN105811098A CN201610220118.4A CN201610220118A CN105811098A CN 105811098 A CN105811098 A CN 105811098A CN 201610220118 A CN201610220118 A CN 201610220118A CN 105811098 A CN105811098 A CN 105811098A
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- circular
- gain antenna
- dielectric substrate
- high gain
- upper layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0464—Annular ring patch
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a broadband circularly-polarized high-gain antenna, and belongs to the technical field of a circularly-polarized antenna. The broadband circularly-polarized high-gain antenna comprises a resonant cavity, wherein the resonant cavity comprises an upper layer dielectric substrate and a lower layer dielectric substrate which are arranged in parallel; a part of reflective surface is arranged on the lower surface of the upper layer dielectric substrate; a copper-clad surface is printed on the lower surface of the lower layer dielectric substrate to be used as grounding plate; a bottom plate is arranged below the grounding plate; a feed network is printed on the lower surface of the bottom plate; and circularly-polarized radiation units are printed on the lower layer dielectric substrate. The antenna is simpler in structure; the resonant cavity is formed by a part of the reflective surface and the grounding plate parallel to the part of the reflective surface; based on the resonant characteristics, the gain can be obviously improved without requiring many array units; meanwhile, the circularly-polarized radiation units are rotated for 90 degrees in sequence to form broadband circular polarization; the distance among the circularly-polarized feed units is much larger than that among the conventional antenna array units, however, grating lobe is not generated; and in addition, the antenna is quite high in practicability.
Description
Technical field
The invention belongs to circular polarized antenna technical field, be specifically related to a kind of broadband circular-polarization high gain antenna.
Background technology
Circular polarized antenna plays an important role in radio art, especially in aerospace craft, fixing due to position of aircraft attitude, their communication measuring and controlling equipment be desirable that be conformal, lightweight, volume is little and circular polarized antenna that cost is low.Circular polarization microstrip antenna is exactly the more satisfactory antenna that can meet these requirements.
The field such as modern radar, satellite communication typically requires the circular polarized antenna using higher gain.Generally adopt aerial array to realize, and array element number is more, need for this complicated feeding network to realize amplitude and the phase condition of circular polarisation.Therefore the problem brought is the impact on antenna performance of the mutual coupling between feed structure complexity and unit, thus causing that the bandwidth particularly axial ratio bandwidth of antenna is narrower.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of broadband circular-polarization high gain antenna, simplifies and adopts complicated feed network to carry out the mode fed in high-gain circular polarized antenna.
A kind of broadband circular-polarization high gain antenna, including resonator cavity, resonator cavity includes upper layer medium substrate arranged in parallel and layer dielectric substrate；Surface configuration partially reflecting surface in described upper layer medium substrate；Lower surface at described layer dielectric substrate is printed and is applied copper face as earth plate, base plate is arranged below at earth plate, and the lower surface at base plate prints feeding network, prints circular polarization radiation unit on layer dielectric substrate.
Described partially reflecting surface is arranged on the lower surface of upper layer medium substrate, partially reflecting surface is made up of some annular pasters, annular paster was arranged along the orthogonal direction cycle, and area area shared by partially reflecting surface is less than the lower surface institute space consuming 50% of upper layer medium substrate.
Described annular paster is printed on the lower surface of upper layer medium substrate.
Described annular paster Cycle Length in 2 orthogonal directions is equal.
Described upper layer medium substrate, fix each through securing member between layer dielectric substrate and base plate.
Distance between described earth plate and partially reflecting surface is d, and it meets d=(1/2+n/2) λ0, wherein λ0Centered by the free space wavelength of frequency electromagnetic, n is integer；Wherein, d and λ0Unit is mm.
Described circular polarization radiation unit is 4, and adjacent circular polarization radiation unit 90-degree rotation successively.
Spacing l=1.0-1.5 λ between described adjacent circular polarization radiation unit0。
Beneficial effect: compared with existing high-gain circular polarized antenna, a kind of broadband circular-polarization high gain antenna of the present invention, eliminate the tradition shortcoming that high-gain circular polarized antenna array element is many, feeding network is complicated, structure is simpler；Pass through partially reflective surface and the earth plate parallel with partially reflecting surface constitutes resonator cavity, resonance characteristic is utilized to make a lot of array element gains can be significantly improved, meanwhile, between circular polarization radiation unit in structure successively 90-degree rotation constitute broadband circular polarisation；Although the circular polarisation feed element spacing more conventional antenna array unit spacing of the present invention wants big many, but graing lobe does not occur；Possesses good practicality.
Accompanying drawing explanation
Fig. 1 is the front view of broadband circular-polarization high gain antenna；
Fig. 2 is the side view of broadband circular-polarization high gain antenna；
Fig. 3 is the structural representation of partially reflecting surface；
Fig. 4 is the structural representation of partially reflecting surface periodic unit；
Fig. 5 is the structural representation of position relative relation between radiating element and unit；
Fig. 6 is reflection coefficient chart；
Fig. 7 is that axle is than frequency response curve figure；
Fig. 8 is gain frequency response curve figure；
Fig. 9 is horizontal radiation pattern；
Figure 10 is elevation radiation patytern.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, it is further elucidated with the present invention.
As Figure 1-3, broadband circular-polarization high gain antenna, including resonator cavity 2, resonator cavity 2 includes upper layer medium substrate 21 arranged in parallel and layer dielectric substrate 23.Upper layer medium substrate 21 and layer dielectric substrate 23 interval are arranged, and air can enter between the two.
At the lower surface setting unit reflecting surface of upper layer medium substrate 21, this partially reflecting surface is made up of some annular pasters 22, and annular paster 22 was arranged along the orthogonal direction cycle, and annular paster 22 is printed directly on the lower surface of upper layer medium substrate 21.Certain those skilled in the art possesses basic test capability, it is also possible to partially reflecting surface is arranged on the upper surface of upper layer medium substrate 21.
Lower surface at layer dielectric substrate 23 is printed and is applied copper face as earth plate 24, base plate 25 is arranged below at earth plate 24, and the lower surface at base plate 25 is printed with the feeding network 26 that microstrip line is constituted.Distance between earth plate 24 and partially reflecting surface is d, and it meets d=(1/2+n/2) λ0Condition, wherein λ0Centered by the free space wavelength of frequency electromagnetic, n is integer.Fix each through securing member 27 between upper layer medium substrate 21, layer dielectric substrate 23 and base plate 25.Wherein, d and λ0Unit is mm.
As shown in Figure 4, annular paster 22 Cycle Length in 2 orthogonal directions is equal, is P, and annulus outer radius is r, and width is w.Partially reflecting surface is less at area shared by upper layer medium substrate 21 lower surface.Wherein, P, r, w unit is mm.
As it is shown in figure 5, print 4 circular polarization radiation unit 1, adjacent circular polarization radiation unit 1 90-degree rotation successively, and spacing l=1.0-1.5 λ between adjacent circular polarization radiation unit 1 on layer dielectric substrate 230, more conventional antenna array unit spacing wants big many, belongs to thinned arrays.
For the ease of the design process of each structural parameters is described, given structural parameters: the annulus outer radius r=3.4mm of annular paster 22, width w=0.5mm, Cycle Length along both direction is p=8.5mm, mid frequency f=10GHz, distance d=15mm between earth plate 24 and partially reflecting surface, meets:
Wherein λ0Centered by the free space wavelength of frequency electromagnetic, l=1.0-1.5 λ0.Selecting the Frequency Simulation Software such as MicrowaveStudioCST of HFSS, CST company of simulation software such as Ansoft company, analog simulation obtains on computers: the axle shown in reflection coefficient chart as shown in Figure 6, Fig. 7 is than the horizontal radiation pattern shown in gain frequency response curve figure, the Fig. 9 shown in frequency response curve figure, Fig. 8, the elevation radiation patytern shown in Figure 10.Curve derived above is real to be obtained under prescribed conditions, if change structure parameter can also obtain similar curve.
From Fig. 6-10 it can be seen that the highest-gain of antenna has reached 16.5dBi and reflection coefficient≤-10dB, axle ratio≤3dB, the common bandwidth of gain landing≤2dB has reached 12% (9.4-10.6GHz).
Claims (8)
1. a broadband circular-polarization high gain antenna, it is characterised in that: including resonator cavity (2), resonator cavity (2) includes upper layer medium substrate (21) arranged in parallel and layer dielectric substrate (23)；Surface configuration partially reflecting surface in described upper layer medium substrate (21)；Lower surface at described layer dielectric substrate (23) is printed and is applied copper face as earth plate (24), base plate (25) is arranged below at earth plate (24), lower surface at base plate (25) prints feeding network (26), at layer dielectric substrate (23) upper printing circular polarization radiation unit (1).
2. a kind of broadband circular-polarization high gain antenna according to claim 1, it is characterized in that: described partially reflecting surface is arranged on the lower surface of upper layer medium substrate (21), partially reflecting surface is made up of some annular pasters (22), annular paster (22) was arranged along the orthogonal direction cycle, and area area shared by partially reflecting surface is less than the lower surface institute space consuming 50% of upper layer medium substrate (21).
3. a kind of broadband circular-polarization high gain antenna according to claim 2, it is characterised in that: described annular paster (22) is printed on the lower surface of upper layer medium substrate (21).
4. a kind of broadband circular-polarization high gain antenna according to claim 2, it is characterised in that: described annular paster (22) Cycle Length in 2 orthogonal directions is equal.
5. a kind of broadband circular-polarization high gain antenna according to any one in claim 1-4, it is characterised in that: described upper layer medium substrate (21), fix each through securing member (27) between layer dielectric substrate (23) and base plate (25).
6. a kind of broadband circular-polarization high gain antenna according to any one in claim 1-4, it is characterised in that: the described distance between earth plate (24) and partially reflecting surface is d, and it meets d=(1/2+n/2) λ0, wherein λ0Centered by the free space wavelength of frequency electromagnetic, n is integer.
7. a kind of broadband circular-polarization high gain antenna according to claim 6, it is characterised in that: described circular polarization radiation unit (1) is 4, and adjacent circular polarization radiation unit (1) 90-degree rotation successively.
8. a kind of broadband circular-polarization high gain antenna according to claim 7, it is characterised in that: spacing l=1.0-1.5 λ between described adjacent circular polarization radiation unit (1)0。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220118.4A CN105811098A (en) | 2016-04-11 | 2016-04-11 | Broadband circularly-polarized high-gain antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220118.4A CN105811098A (en) | 2016-04-11 | 2016-04-11 | Broadband circularly-polarized high-gain antenna |
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| CN105811098A true CN105811098A (en) | 2016-07-27 |
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| CN201610220118.4A Pending CN105811098A (en) | 2016-04-11 | 2016-04-11 | Broadband circularly-polarized high-gain antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876896A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Circular polarized antenna |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
| CN106898868A (en) * | 2017-02-28 | 2017-06-27 | 山东大学 | Large scale sub-wavelength cavity antenna based on magnetic single-negative material |
| CN106921049A (en) * | 2017-02-28 | 2017-07-04 | 山东大学 | Sub-wavelength cavity antenna based on double-layer magnetic single-negative material |
| CN106961012A (en) * | 2017-03-16 | 2017-07-18 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN107069201A (en) * | 2017-02-28 | 2017-08-18 | 山东大学 | Sub-wavelength cavity antenna based on magnetic single-negative material |
| CN109560374A (en) * | 2018-11-22 | 2019-04-02 | 西安电子科技大学 | A kind of Fabry-Perot antenna of the low radar cross section of high-gain |
| CN110474163A (en) * | 2019-07-24 | 2019-11-19 | 西北工业大学 | A kind of frequency agility cavity antenna |
| CN112688072A (en) * | 2020-12-30 | 2021-04-20 | 东南大学 | Dual-band high-gain common-caliber resonant antenna |
-
2016
- 2016-04-11 CN CN201610220118.4A patent/CN105811098A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876896A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Circular polarized antenna |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
| CN106898868A (en) * | 2017-02-28 | 2017-06-27 | 山东大学 | Large scale sub-wavelength cavity antenna based on magnetic single-negative material |
| CN106921049A (en) * | 2017-02-28 | 2017-07-04 | 山东大学 | Sub-wavelength cavity antenna based on double-layer magnetic single-negative material |
| CN107069201A (en) * | 2017-02-28 | 2017-08-18 | 山东大学 | Sub-wavelength cavity antenna based on magnetic single-negative material |
| CN106961012A (en) * | 2017-03-16 | 2017-07-18 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN106961012B (en) * | 2017-03-16 | 2019-07-16 | 西安电子科技大学 | Low section dualbeam frequency based on super surface sweeps cavity antenna |
| CN109560374A (en) * | 2018-11-22 | 2019-04-02 | 西安电子科技大学 | A kind of Fabry-Perot antenna of the low radar cross section of high-gain |
| CN110474163A (en) * | 2019-07-24 | 2019-11-19 | 西北工业大学 | A kind of frequency agility cavity antenna |
| CN110474163B (en) * | 2019-07-24 | 2020-11-06 | 西北工业大学 | Frequency agile resonant cavity antenna |
| CN112688072A (en) * | 2020-12-30 | 2021-04-20 | 东南大学 | Dual-band high-gain common-caliber resonant antenna |
| CN112688072B (en) * | 2020-12-30 | 2024-05-28 | 东南大学 | Dual-band high-gain common-caliber resonant antenna |
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Application publication date: 20160727 |
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