CN111106441A - Miniaturized directional radiation antenna based on artificial surface plasmon polariton - Google Patents
Miniaturized directional radiation antenna based on artificial surface plasmon polariton Download PDFInfo
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- CN111106441A CN111106441A CN202010021446.8A CN202010021446A CN111106441A CN 111106441 A CN111106441 A CN 111106441A CN 202010021446 A CN202010021446 A CN 202010021446A CN 111106441 A CN111106441 A CN 111106441A
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- transmission line
- surface plasmon
- directional radiation
- artificial surface
- antenna based
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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Abstract
The invention discloses a miniature directional radiation antenna based on artificial surface plasmon, which comprises a dielectric plate, wherein a microstrip transmission line and an SSPPs transmission line are sequentially arranged on the central axis of the dielectric plate, transition grooves are respectively arranged at the starting end and the tail end of the microstrip SSPPs transmission line, and common ground structures are symmetrically arranged on two opposite sides of the starting end of the microstrip transmission line respectively. The antenna works at 26.265-32.088GHz, the characteristics of low gain and narrow band of the microstrip antenna are improved, and the large-size characteristic of the SSPPs antenna is achieved. The miniaturization, high gain and broadband characteristics of the antenna are realized.
Description
Technical Field
The invention belongs to the technical field of electromagnetic fields and microwaves, and relates to a miniature directional radiation antenna based on artificial surface plasmons.
Background
The artificial surface plasmon has strong electromagnetic field binding characteristics, can be applied to the design of miniaturized and integrated microwave and terahertz circuits, plays a role in reducing crosstalk between signal lines, and can adapt to different application scenes. Artificial surface plasmon waveguides are considered to be an ideal choice for transmission lines in the GHz to THz region and have gained much attention in recent years from the scientific and engineering community.
However, many of these plasmon polariton (SSPPs) antennas have large volumes and complicated structures, which are not favorable for practical engineering applications, so that it is urgent to miniaturize the volumes and improve the working efficiency and gain thereof.
Disclosure of Invention
The invention aims to provide a miniaturized directional radiation antenna based on artificial surface plasmon, the gain peak value of the antenna can reach 10.44dBi in a wider working frequency band of 26.265-32.088GHz, the average efficiency reaches 94.3%, and the antenna has good directional radiation characteristics.
The invention adopts the technical scheme that the miniature directional radiation antenna based on the artificial surface plasmon polariton comprises a dielectric plate, wherein a micro-strip transmission line and an SSPPs transmission line are sequentially arranged on the central axis of the dielectric plate, transition grooves are respectively arranged at the starting end and the tail end of the micro-strip SSPPs transmission line, and common ground structures are respectively and symmetrically arranged at two opposite sides of the starting end of the micro-strip transmission line.
The present invention is also characterized in that,
the common ground structure comprises a rectangular metal patch II and a metal patch I with a curved surface which are sequentially connected, and the rectangular metal patch II is aligned with the end face of the starting end of the microstrip transmission line.
The curve function on metal patch I is as follows:
y＝C1ea×α+C2
wherein the content of the first and second substances,
C2＝-C1，α＝0.7。
the SSPPs transmission line is a rectangular groove structure which is periodically arranged.
A gap exists between the microstrip transmission line and the common ground structure.
The height of each transition groove is reduced along the direction far away from the SSPPs transmission line.
The material of the dielectric plate is Rogers 5880.
The invention has the advantages that the invention realizes wave vector matching in a wider bandwidth through a special transition structure, and the maximum gain and the average efficiency of the antenna reach 10.44dBi and 94.3 percent. The antenna has the advantages of small size, simple structure (single-layer and single-side), convenience in processing and wireless equipment integration, mature manufacturing process, high automation degree and cost saving, can be well applied to 26.265-32.088GHz systems, is small in size and easy to process, and has a good application prospect in satellite communication of 5G millimeter wave frequency bands and Ka wave bands.
Drawings
FIG. 1 is a schematic front structural view of a miniaturized directional radiation antenna based on artificial surface plasmon polariton according to the present invention;
FIG. 2 is a graph showing the reflection coefficient results of a miniaturized directional radiation antenna based on artificial surface plasmon polariton according to the present invention;
FIG. 3 is a gain and efficiency curve of a miniaturized directional radiation antenna based on artificial surface plasmons according to the present invention;
FIG. 4 is a directional diagram of the E surface of the miniaturized directional radiation antenna based on artificial surface plasmon working at 28 GHz;
FIG. 5 is a directional diagram of an E surface of a miniaturized directional radiation antenna based on artificial surface plasmon, which works at 32 GHz;
FIG. 6 is a directional diagram of an H surface of a miniaturized directional radiation antenna based on artificial surface plasmon, which works at 28 GHz;
FIG. 7 is a directional diagram of an H-plane of a miniaturized directional radiation antenna based on artificial surface plasmon, which works at 32 GHz.
In the figure, 1 is a dielectric plate, 2 is a metal patch I, 3 is a microstrip transmission line, 4 is an SSPPs transmission line, and 5 is a metal patch II, 6 is a transition slot.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a miniaturized directional radiation antenna based on artificial Surface plasmons, as shown in figure 1, (the spherical Surface Plasmon Polaritons, SSPPs) comprise a dielectric plate 1, a microstrip transmission line 3 and an SSPPs transmission line 4 are sequentially arranged on the central axis of the dielectric plate 1, transition grooves 6 are respectively arranged at the starting end and the tail end of the microstrip SSPPs transmission line 4, and two opposite sides of the starting end of the microstrip transmission line 3 are respectively symmetrically provided with a common-ground structure.
The common ground structure comprises a rectangular metal patch II5 and a metal patch I2 with a curved surface which are connected in sequence, wherein the rectangular metal patch II5 is aligned with the end face of the starting end of the microstrip transmission line.
The curve on the metal patch I2 takes the point a in fig. 1 as the origin of coordinates, and the function y ═ f (x) is as follows:
y＝C1ea×α+C2
wherein the content of the first and second substances,
C2＝-C1，α＝0.7。
the SSPPs transmission lines 4 are periodically arranged rectangular groove structures. The rectangular groove structure improves the wave vector matching of the antenna in order to be matched with a coplanar curve structure.
A gap exists between the microstrip transmission line 3 and the common ground structure. The gap is to improve the impedance matching of the antenna.
The height of each transition groove 6 is sequentially reduced in a direction away from the SSPPs transmission line.
The length L1 of the medium plate is 46mm +/-1 mm, and the width W1 of the medium plate is 16mm +/-1 mm;
the length L2 of the microstrip transmission line 3 is 45 +/-1 mm, and the width W2 is 1.5mm +/-0.1 mm;
the length of the metal patch II5 on the two initial sides of the microstrip transmission line 3 is L3, the width of the metal patch II5 is W3, and the gap between the metal patch II5 and the microstrip transmission line 3 is W4;
the number of transition grooves 6 at two ends of the microstrip SSPPs transmission line 4 is three respectively, the distance from the microstrip SSPPs transmission line 4 to the microstrip transmission line 3 is L5, the left height of the transition groove 6 farthest from the microstrip SSPPs transmission line 4 is H2, the right height of the transition groove 6 is H3, and the length of the transition groove 6 is L6;
the material of the dielectric plate 1 is Rogers 5880, and the dielectric constant is 2.2.
Fig. 2 is a graph of the input reflection coefficient of an endfire antenna of the present invention, which is one of the main performance characteristics of the antenna. As can be seen, the antenna is less than-10 dB in the 26.265-32.088GHz working frequency band.
Fig. 3 is a graph of the efficiency and gain of the endfire antenna of the present invention, with gain and efficiency also being the main performance characteristics of the antenna. As can be seen from fig. 3, the gain peak of the antenna can reach 10.44dBi, and the average efficiency reaches 94.3%.
FIG. 4 is a pattern for the E-plane of the end-fire antenna of the present invention operating at 28 GHz; FIG. 5 is a pattern for the E-plane of the end-fire antenna of the present invention operating at 32 GHz; FIG. 6 is a pattern of the H-plane of the end-fire antenna of the present invention operating at 28 GHz; fig. 7 is a pattern of the H-plane of the end-fire antenna of the present invention operating at 32 GHz. The antenna has good directional radiation characteristics as can be seen from the patterns of the E surface and the H surface of the antenna in fig. 4, 5, 6 and 7.
Claims (7)
1. The utility model provides a miniaturized directional radiation antenna based on artificial surface plasmon polariton which characterized in that: the medium plate is characterized by comprising a medium plate, wherein a microstrip transmission line and an SSPPs transmission line are sequentially arranged on a central axis of the medium plate, transition grooves are formed in the starting end and the tail end of the microstrip SSPPs transmission line, and common ground structures are symmetrically arranged on two opposite sides of the starting end of the microstrip transmission line respectively.
2. The miniaturized directional radiation antenna based on artificial surface plasmon of claim 1, wherein: the common ground structure comprises a rectangular metal patch II and a metal patch I with a curved surface which are sequentially connected, and the rectangular metal patch II is aligned with the end face of the starting end of the microstrip transmission line.
3. The miniaturized directional radiation antenna based on artificial surface plasmon of claim 2, wherein: the curve function on the metal patch I is as follows:
y＝C1ea×α+C2
wherein the content of the first and second substances,
C2＝-C1，α＝0.7。
4. the miniaturized directional radiation antenna based on artificial surface plasmon of claim 2, wherein: the SSPPs transmission line is a rectangular groove structure which is periodically arranged.
5. The miniaturized directional radiation antenna based on artificial surface plasmon of claim 1, wherein: a gap exists between the microstrip transmission line and the common ground structure.
6. The miniaturized directional radiation antenna based on artificial surface plasmon of claim 1, wherein: the height of each transition groove is reduced along the direction far away from the SSPPs transmission line.
7. The miniaturized directional radiation antenna based on artificial surface plasmon of claim 1, wherein: the dielectric plate is made of Rogers 5880.
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| CN202010021446.8A CN111106441A (en) | 2020-01-09 | 2020-01-09 | Miniaturized directional radiation antenna based on artificial surface plasmon polariton |
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Citations (10)
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| US20030011517A1 (en) * | 2001-07-13 | 2003-01-16 | Frank Kolak | Reactive matching for waveguide-slot-microstrip transitions |
| CN104157934A (en) * | 2014-07-21 | 2014-11-19 | 南京航空航天大学 | Ultra wide band plasma filter provided with artificial surface |
| CN105703047A (en) * | 2016-03-28 | 2016-06-22 | 东南大学 | Artificial surface plasmon-based low-loss transmission line |
| CN205666302U (en) * | 2016-04-18 | 2016-10-26 | 六盘水师范学院 | Tippers etc. are from excimer type microwave filter |
| CN205666311U (en) * | 2016-04-25 | 2016-10-26 | 六盘水师范学院 | Bending groove microwave filter |
| CN205790298U (en) * | 2016-05-24 | 2016-12-07 | 六盘水师范学院 | A kind of microwave band-pass filter with cross loaded line |
| CN206059607U (en) * | 2016-10-12 | 2017-03-29 | 湖北科技学院 | A kind of spiral metal micro-strip loaded type microwave band-pass filter |
| CN108336462A (en) * | 2018-03-28 | 2018-07-27 | 华南理工大学 | The annular surface wave transmission line of coplanar wave guide feedback |
| CN110085989A (en) * | 2019-05-05 | 2019-08-02 | 南京邮电大学 | A kind of Yagi spark gap leaky-wave antenna based on artificial surface phasmon |
| CN110444865A (en) * | 2019-08-06 | 2019-11-12 | 南京邮电大学 | Log-periodic antenna based on artificial surface plasmon |
-
2020
- 2020-01-09 CN CN202010021446.8A patent/CN111106441A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030011517A1 (en) * | 2001-07-13 | 2003-01-16 | Frank Kolak | Reactive matching for waveguide-slot-microstrip transitions |
| CN104157934A (en) * | 2014-07-21 | 2014-11-19 | 南京航空航天大学 | Ultra wide band plasma filter provided with artificial surface |
| CN105703047A (en) * | 2016-03-28 | 2016-06-22 | 东南大学 | Artificial surface plasmon-based low-loss transmission line |
| CN205666302U (en) * | 2016-04-18 | 2016-10-26 | 六盘水师范学院 | Tippers etc. are from excimer type microwave filter |
| CN205666311U (en) * | 2016-04-25 | 2016-10-26 | 六盘水师范学院 | Bending groove microwave filter |
| CN205790298U (en) * | 2016-05-24 | 2016-12-07 | 六盘水师范学院 | A kind of microwave band-pass filter with cross loaded line |
| CN206059607U (en) * | 2016-10-12 | 2017-03-29 | 湖北科技学院 | A kind of spiral metal micro-strip loaded type microwave band-pass filter |
| CN108336462A (en) * | 2018-03-28 | 2018-07-27 | 华南理工大学 | The annular surface wave transmission line of coplanar wave guide feedback |
| CN110085989A (en) * | 2019-05-05 | 2019-08-02 | 南京邮电大学 | A kind of Yagi spark gap leaky-wave antenna based on artificial surface phasmon |
| CN110444865A (en) * | 2019-08-06 | 2019-11-12 | 南京邮电大学 | Log-periodic antenna based on artificial surface plasmon |
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Application publication date: 20200505 |