CN110380217A - High-gain end-on-fire antenna based on artificial surface plasmon - Google Patents
High-gain end-on-fire antenna based on artificial surface plasmon Download PDFInfo
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- CN110380217A CN110380217A CN201910680912.0A CN201910680912A CN110380217A CN 110380217 A CN110380217 A CN 110380217A CN 201910680912 A CN201910680912 A CN 201910680912A CN 110380217 A CN110380217 A CN 110380217A
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- transmission line
- gain
- surface plasmon
- dipole
- antenna
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/28—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements
- H01Q19/30—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of two or more substantially straight conductive elements the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements
Abstract
Present invention discloses a kind of high-gain end-on-fire antenna for being based on artificial surface plasmon (Spoof Surface Plasmon Polaritons, SSPPs), contain dielectric substrate, upper layer metal patch and lower metal patch；The upper layer metal patch is located at the upper surface of dielectric substrate, including microstrip transmission line, gradual change shape lead-over groove, SSPPs transmission line, a part of dipole and director；The lower metal patch is located at the lower surface of dielectric substrate, a part including ground plane, gradual change shape lead-over groove, SSPPs transmission line and dipole.The structure transmits energy using artificial surface plasmon wave guide, realizes radiation using dipole in terminal, and introduce the director of yagi aerial in the end of antenna, the reflector of yagi aerial is replaced using ground plane, to improve gain.Present invention optimizes traditional dipole end-on-fire antenna, and design structure is simple, and bandwidth of operation increases, and reduce the mutual coupling between antenna, antenna gain is greatly improved.
Description
Technical field
The present invention relates to a kind of high-gain end-on-fire antenna based on artificial surface plasmon, can be used for microwave technology neck
Domain.
Background technique
Artificial surface plasmon wave guide is considered as ideal chose of the GHz to THz region domain transmission line, in recent years by
Scientific circles and engineering circles extensive concern.The most commonly used is artificial surface plasma excimer is guided using periodical groove structure
Wave, and a variety of passive devices such as a variety of antennas, filter, coupler are devised based on this waveguiding structure.Artificial surface etc. from
The development of sub- excimer depends on the radiation of SPP wave, is now based on artificial surface plasma with a variety of radiation modes of realization
The antenna of excimer opens road, but the volume of wherein most of antenna is larger, and relative complex, therefore, we consider it
His radiating element.Dipole is as most basic, most common antenna, since its is easy to make, integrated convenient with radio circuit,
It is widely used in antenna works.However, the gain of dipole is obviously inclined when being applied to the microwave of Terahertz frequency
It is low.As Meta Materials are constantly applied in different antennas, can use completely Meta Materials realize bandwidth and gain enhancing,
Wave beam focuses and frequency reconfiguration.The antenna that the present invention designs is exactly to make to obtain to combination by Meta Materials technology and dipole more extensively
General application.
Summary of the invention
The technical issues of above-mentioned background technique of solution proposes, the present invention is intended to provide a kind of be based on artificial surface plasma
The high-gain end-on-fire antenna of excimer solves the problems, such as that dipole antenna gain is low and has gain higher for research from now on
Antenna lays the foundation.
The present invention will be realized through the following technical scheme: the high-gain end-fire day based on artificial surface plasmon
Line, high-gain end-on-fire antenna are single layer structure, contain dielectric substrate, top layer metallic layer and bottom metal layer；Top layer metallic layer
Positioned at the upper surface of dielectric substrate, a part including microstrip transmission line, gradual change shape lead-over groove, SSPPs transmission line, dipole with
And director；Bottom metal layer be located at the lower surface of dielectric substrate, including ground plane, gradual change shape lead-over groove, SSPPs transmission line with
And a part of dipole；Microstrip transmission line feed transmits energy using SSPPs transmission line waveguide after gradual transition slot,
Terminal realizes that energy radiates using dipole, introduces the director of yagi aerial in the end of antenna, replaces eight using ground plane
The reflector of the wooden antenna improves gain, forms high-gain end-on-fire antenna.
The technical solution that the present invention further limits are as follows:
Preferably, intermediate zone in the top layer metallic layer among microstrip transmission line (5) to SSPPs transmission line (7) is using trapezoidal
Gradual change slot structure.
Preferably, gradual change slot one shares 8, successively deepens, until deep with the slot of SSPPs transmission line etc..
Preferably, SSPPs transmission line structure is pectination cycle structure, the height of each groove in the top layer metallic layer
It is all identical with width.
Preferably, from left to right spacing is gradually increased the director of the top layer metallic layer right end, and length is gradually
Shorten.
Preferably, the ground plane of the bottom metal layer is a U-shaped ground plane.
Preferably, the transmission line in the bottom metal layer and dipole are same as above the transmission line of surface metal and dipole is
Full symmetric reversed, i.e., shape, size are identical, contrary.
Preferably, the dielectric substrate is FR4 dielectric-slab, dielectric constant 2.65, with a thickness of 0.8 millimeter.
The invention adopts the above technical scheme compared with prior art, has following technical effect that the high-gain end-fire day
Cable architecture is simple, it is small in size, be easily integrated, compared with traditional dipole antenna, the high-gain end based on SSPPs that is proposed
Penetrate integrality and lesser waveguide loss that antenna system is able to maintain energy.Simultaneously as artificial surface plasmon
Bound very strong, artificial surface plasmon waveguide is capable of providing more compact planar structure, can be obvious mutual
In the case where coupling, made with other planar devices.Compared with existing SSPPs antenna, which has smaller ruler
It is very little.The test result of emulation also indicates that the structure is with good performance.The results show that being based on when design frequency is 6ghz
The high-gain end-on-fire antenna gain of SSPPs can reach 9.5dBi.
Present invention optimizes dipole antennas, extend the ground plane of antenna first, so that the radiation areas of day line back end
It has been reflected to front end, change the radiation direction of dipole antenna and has improved the gain of antenna；Next has introduced director,
It improves the directionality of antenna and further improves the gain of antenna, realize high-gain end-on-fire antenna.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram of the high-gain end-on-fire antenna the present invention is based on artificial surface plasmon.
Fig. 2 is the three-dimensional exploded schematic diagram of the high-gain end-on-fire antenna the present invention is based on artificial surface plasmon.
Fig. 3 is the top view of high-gain end-on-fire antenna of the base of the present invention based on artificial surface plasmon.
Fig. 4 is the S parameter simulation result of the high-gain end-on-fire antenna the present invention is based on artificial surface plasmon.
Fig. 5 is the 2D directional diagram schematic diagram of the high-gain end-on-fire antenna the present invention is based on artificial surface plasmon.
Appended drawing reference in figure are as follows: 1- dielectric substrate, 2- top layer metallic layer, 3- bottom metal layer, 4- ground plane, 5-
Microstrip line, 6- gradual transition band, 7-SSPPs transmission line, 8- dipole, 9- director.
Specific embodiment
The purpose of the present invention, advantage and feature, by by the non-limitative illustration of preferred embodiment below carry out diagram and
It explains.
Present invention discloses a kind of high-gain end-on-fire antenna based on artificial surface plasmon, as shown in Figure 1, Figure 2 and Fig. 3
Shown, the high-gain end-on-fire antenna is single layer structure, including dielectric substrate 1 and top layer metallic layer 2 and bottom metal layer 3, institute
The upper surface that top layer metallic layer 2 is set to dielectric substrate 1 is stated, the bottom metal layer 3 is set to the lower surface of dielectric substrate 1,
I.e. high-gain end-on-fire antenna from top to bottom successively includes top layer metallic layer, dielectric substrate and underlying metal piece.In the technical program
In, the dielectric substrate is FR4 dielectric-slab, dielectric constant 2.65, with a thickness of 0.8 millimeter.
It is provided with antenna structure on the top layer metallic layer 2 and underlying metal 3, top-level metallic structure includes microstrip line 5, gradually
Become intermediate zone 6, SSPPs transmission line 7, dipole 8 and director 9；Underlying metal structure includes ground plane 4, gradual transition band
6, SSPPs transmission line 7 and dipole 8；The antenna structure utilizes feed microstrip line, uses after gradual transition slot
SSPPs waveguide transmission energy is radiated using dipole realization energy in terminal, and introduces director in the end of antenna, from
And gain is improved, form high-gain end-on-fire antenna.
The antenna structure is set to the upper and lower surface of the dielectric substrate, wherein gradual transition band and SSPPs transmission line
It is antisymmetry structure, i.e. transmission line portions size, the structure of upper and lower surface are identical, contrary.
The dipole subdivision of the antenna structure is distributed in the upper and lower surface of dielectric substrate.
The director of the antenna structure is three metal patches, is all set in the upper surface of dielectric substrate, is located at terminal
The right side of dipole.
As shown in Fig. 2, complete antenna structure is to excite electromagnetic wave to utilize after intermediate zone by microstrip line in system
SSPPs waveguide transmission energy realizes that energy radiates using dipole in terminal, and passes through the radiation side of director guide antenna
To.
The present invention can be realized smoothly by the transformation of omnidirectional radiation to directed radiation, and increase substantially the gain of antenna, phase
For traditional dipole end-on-fire antenna, it is more compact that the invention enables antennas, reduces dielectric loss.
Fig. 4 is the simulation result diagram of the reflection coefficient of the high-gain end-on-fire antenna based on artificial surface plasmon, from
Can intuitively it find out in figure, the present invention is based on the high-gain end-on-fire antenna of artificial surface plasmon 5.4GHz-6.3GHz's
In frequency range, S11It is below -10dB, therefore work that can be intact in working band 5.4GHz-6.3GHz internal antenna.
Fig. 5 is the two-dimensional radiation directional diagram of the high-gain end-on-fire antenna based on artificial surface plasmon, can from figure
To be clear that, gain can reach nearly 10dBi, illustrate to increase the radiation that antenna is greatly improved after director
Gain.
The invention proposes the high-gain end-on-fire antenna based on artificial surface plasmon, relative to traditional dipole
Antenna replaces traditional microstrip transmission line using artificial surface plasmon waveguide, can greatly reduce transmission loss, make electricity
Magnetic wave is bound in metal and shows to propagate.Then in order to improve the radiation gain of end-on-fire antenna, we are according to the spoke of yagi aerial
Mechanism is penetrated, loads configurations of directors in antenna terminal direction, and extend reflection of the ground plane as yagi aerial of Medium Wave Guide
Device, to realize the enhancing of radiation gain.By carrying out simulation speed-up to antenna structure, we can see that the structure has well
Performance.Based on Meta Materials SSPPs antenna system when design frequency is 6GHz, gain can reach 10dBi, than traditional
Dipole end-on-fire antenna is higher by 7dBi, and has preferable directionality.
The above, the only specific embodiment in the present invention, but scope of protection of the present invention is not limited thereto, appoints
What is familiar with the people of the technology within the technical scope disclosed by the invention, it will be appreciated that expects transforms or replaces, and should all cover
Within scope of the invention, therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (8)
1. the high-gain end-on-fire antenna based on artificial surface plasmon, it is characterised in that: the high-gain end-on-fire antenna is
Single layer structure contains dielectric substrate (1), top layer metallic layer (2) and bottom metal layer (3)；The top layer metallic layer (2) is located at
The upper surface of dielectric substrate (1), including microstrip transmission line (5), gradual change shape lead-over groove (6), SSPPs transmission line (7), dipole
(8) a part and director (9)；The bottom metal layer (3) is located at the lower surface of dielectric substrate (1), including ground plane
(4), a part of gradual change shape lead-over groove (6), SSPPs transmission line (7) and dipole (8)；Microstrip transmission line (5) feed
SSPPs transmission line (7) waveguide transmission energy is used after gradual transition slot (6), realizes energy using dipole (8) in terminal
Radiation introduces the director (9) of yagi aerial in the end of antenna, improves gain using ground plane, form high-gain end-fire day
Line.
2. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
Microstrip transmission line in top layer metallic layer (5) to SSPPs transmission line (7) intermediate intermediate zone is stated using trapezoidal gradual change slot structure.
3. the high-gain end-on-fire antenna according to claim 2 based on artificial surface plasmon, it is characterised in that: gradually
Become slot one and share 8, successively deepen, until deep with the slot of SSPPs transmission line etc..
4. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
Stating SSPPs transmission line structure in top layer metallic layer is pectination cycle structure, and the height and width of each groove are identical.
5. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
Stating the director of top layer metallic layer right end, from left to right spacing is gradually increased, and length is gradually shortened.
6. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
The ground plane for stating bottom metal layer is a U-shaped ground plane.
7. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
State transmission line and dipole in bottom metal layer be same as above the transmission line of surface metal and dipole be it is full symmetric reversed, i.e.,
Shape, size are identical, contrary.
8. the high-gain end-on-fire antenna according to claim 1 based on artificial surface plasmon, it is characterised in that: institute
The dielectric substrate stated is FR4 dielectric-slab, dielectric constant 2.65, with a thickness of 0.8 millimeter.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110957575A (en) * | 2019-12-19 | 2020-04-03 | 南通大学 | Surface plasmon structure shared high-frequency-ratio dual-band antenna |
| CN111463565A (en) * | 2020-03-17 | 2020-07-28 | 西安电子科技大学 | Terahertz wave impedance tuning air dielectric yagi antenna structure and manufacturing method thereof |
| CN111755829A (en) * | 2020-05-29 | 2020-10-09 | 常熟市泓博通讯技术股份有限公司 | High gain antenna module |
| CN112993553A (en) * | 2021-02-09 | 2021-06-18 | 维沃移动通信有限公司 | Antenna unit and antenna structure |
| CN113285229A (en) * | 2021-06-07 | 2021-08-20 | 南京邮电大学 | High-gain end-fire circularly polarized antenna based on artificial surface plasmon polariton |
| CN113782955A (en) * | 2021-08-24 | 2021-12-10 | 天津大学 | Broadband high-gain compressed high-order mode yagi antenna |
| CN114665241A (en) * | 2022-03-18 | 2022-06-24 | 北京邮电大学 | Conversion structure and method of artificial surface plasmon and microstrip line |
| CN115149258A (en) * | 2022-07-27 | 2022-10-04 | 重庆邮电大学 | Different-surface asymmetric millimeter wave circularly polarized end-fire antenna based on artificial surface plasmon polaritons |
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| CN110957575B (en) * | 2019-12-19 | 2021-08-03 | 南通大学 | Surface plasmon structure shared high-frequency-ratio dual-band antenna |
| CN110957575A (en) * | 2019-12-19 | 2020-04-03 | 南通大学 | Surface plasmon structure shared high-frequency-ratio dual-band antenna |
| CN111463565B (en) * | 2020-03-17 | 2023-02-10 | 西安电子科技大学 | Terahertz wave impedance tuning air dielectric yagi antenna structure and manufacturing method thereof |
| CN111463565A (en) * | 2020-03-17 | 2020-07-28 | 西安电子科技大学 | Terahertz wave impedance tuning air dielectric yagi antenna structure and manufacturing method thereof |
| CN111755829A (en) * | 2020-05-29 | 2020-10-09 | 常熟市泓博通讯技术股份有限公司 | High gain antenna module |
| CN111755829B (en) * | 2020-05-29 | 2023-08-18 | 常熟市泓博通讯技术股份有限公司 | High gain antenna module |
| CN112993553A (en) * | 2021-02-09 | 2021-06-18 | 维沃移动通信有限公司 | Antenna unit and antenna structure |
| CN113285229A (en) * | 2021-06-07 | 2021-08-20 | 南京邮电大学 | High-gain end-fire circularly polarized antenna based on artificial surface plasmon polariton |
| CN113285229B (en) * | 2021-06-07 | 2022-05-20 | 南京邮电大学 | High-gain end-fire circularly polarized antenna based on artificial surface plasmon polariton |
| CN113782955A (en) * | 2021-08-24 | 2021-12-10 | 天津大学 | Broadband high-gain compressed high-order mode yagi antenna |
| CN113782955B (en) * | 2021-08-24 | 2023-06-16 | 天津大学 | Broadband high-gain compressed high-order mode yagi antenna |
| CN114665241B (en) * | 2022-03-18 | 2022-10-21 | 北京邮电大学 | Conversion structure and method of artificial surface plasmon polariton and microstrip line |
| CN114665241A (en) * | 2022-03-18 | 2022-06-24 | 北京邮电大学 | Conversion structure and method of artificial surface plasmon and microstrip line |
| CN115149258A (en) * | 2022-07-27 | 2022-10-04 | 重庆邮电大学 | Different-surface asymmetric millimeter wave circularly polarized end-fire antenna based on artificial surface plasmon polaritons |
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