CN209232950U - A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe - Google Patents
A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe Download PDFInfo
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- CN209232950U CN209232950U CN201821969996.7U CN201821969996U CN209232950U CN 209232950 U CN209232950 U CN 209232950U CN 201821969996 U CN201821969996 U CN 201821969996U CN 209232950 U CN209232950 U CN 209232950U
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- 239000002184 metal Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 230000005684 electric field Effects 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 230000005855 radiation Effects 0.000 abstract description 7
- 230000005672 electromagnetic field Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of totally-enclosed resonant antennas of the high-gain of Sidelobe, belong to high-gain aerial technical field, feed including closing resonant cavity and in closing resonant cavity, close resonant cavity includes partially reflecting surface disposed in parallel and earth plate, four walls are set between partially reflecting surface and earth plate, and four walls include two metal electricity walls being oppositely arranged and two magnetic walls being oppositely arranged.The utility model eliminates the feeding network of traditional high-gain aerial, and longitudinal size is small, and structure is simpler；It passes through partially reflective surface, earth plate and metal electricity wall and magnetic wall constitutes totally-enclosed resonant cavity, and the constraint using the metal electricity wall parallel with direction of an electric field to electric field, and the magnetic wall parallel with magnetic direction is to the constraint condition in magnetic field, so that the leakage of fringing field does not occur in four walls for the electromagnetic field that feed motivates, and the bore face field distribution of approximate taper distribution is respectively formed in the face E and the face H to which the minor level of antenna be effectively reduced, improve radiation characteristic.
Description
Technical field
The utility model belongs to high-gain aerial technical field, and in particular to a kind of totally-enclosed resonance of the high-gain of Sidelobe
Antenna.
Background technique
In recent years, as the development of antenna technology emerges such as high increasing based on Meta Materials of some novel high-gain aerials
Beneficial antenna, the resonant antenna etc. based on Fabry-Perot resonant cavity.
Some applications (such as feed of multi-beam reflection surface antenna) need simultaneously to improve the covering gain of antenna
It realizes small-bore and high-gain, but the bore of antenna is positively related with gain, therefore to realize small-bore and high-gain simultaneously
Just seem more difficult.
Based on the resonant antenna of Fabry-Perot resonant cavity, in the smaller situation in bore face, due to fringing field leakage and
Aperture field distribution leads to the higher face especially E of the minor lobe of radiation pattern, to affect the actual use of such antenna.
Utility model content
Purpose of utility model: the purpose of this utility model is to provide a kind of totally-enclosed resonance days of the high-gain of Sidelobe
Line solves existing high-gain aerial in the smaller situation in bore face, and leakage and Aperture field distribution due to fringing field lead to day
The problem of minor lobe of beta radiation directional diagram higher (especially face E).
Technical solution: to realize above-mentioned purpose of utility model, the utility model adopts the following technical solution:
A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe, the feedback including closing resonant cavity and in closing resonant cavity
Source, the closing resonant cavity includes partially reflecting surface disposed in parallel and earth plate, in the partially reflecting surface
Four walls are set between earth plate, and four walls include two metal electricity walls being oppositely arranged and two magnetic walls being oppositely arranged.
The feed is made of micro-strip paster antenna, and the feed is arranged in the middle part of earth plate.
The metal electricity wall is parallel with direction of an electric field, and magnetic wall is parallel with magnetic direction.
The magnetic wall is made of artificial magnetic conductor.
The partially reflecting surface, earth plate, metal electricity wall and magnetic wall junction be connected and fixed by fastener.
Centre distance between the partially reflecting surface and metal ground plate meets d=(1/2+n/2) λ0, wherein λ0For
The free space wavelength of centre frequency electromagnetic wave, n are integer.
The partially reflecting surface is arranged several frequency-selective surfaces by the period on two orthogonal directions and constitutes, frequency choosing
It is equal to select the cycle length of surface in 2 orthogonal directions.
The artificial magnetic conductor is made of metal rectangular cells.
The utility model has the advantages that compared with prior art, the utility model eliminates the feeding network of traditional high-gain aerial, it is longitudinal
Size is small (about half wavelength), and structure is simpler；It passes through partially reflective surface, earth plate and metal electricity wall and magnetic wall is constituted
Totally-enclosed resonant cavity, and the constraint using the metal electricity wall parallel with direction of an electric field to electric field, and the magnetic parallel with magnetic direction
Wall is to the constraint condition in magnetic field, so that the leakage of fringing field does not occur in four walls for the electromagnetic field that feed motivates, and in the face E and H
It is respectively formed the bore face field distribution of approximate taper distribution in face to which the minor level of antenna be effectively reduced, improves radiation characteristic.
Detailed description of the invention
Fig. 1 is the general structure schematic diagram of the totally-enclosed resonant antenna of high-gain of Sidelobe；
Fig. 2 is the side view of the totally-enclosed resonant antenna of high-gain of Sidelobe；
Fig. 3 is the structural schematic diagram of partially reflecting surface；
Fig. 4 is the structural schematic diagram of artificial magnetic conductor；
Fig. 5 is the periodic unit structural schematic diagram of partially reflecting surface；
Fig. 6 is the periodic unit structural schematic diagram of artificial magnetic conductor；
Fig. 7 is the reflection coefficient chart of the totally-enclosed resonant antenna of high-gain of Sidelobe；
Fig. 8 is the gain frequency response curve figure of the totally-enclosed resonant antenna of high-gain of Sidelobe；
Fig. 9 is the elevation radiation patytern of the totally-enclosed resonant antenna of high-gain of Sidelobe；
Figure 10 is the horizontal radiation pattern of the totally-enclosed resonant antenna of high-gain of Sidelobe.
Specific embodiment
The utility model is described further below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of totally-enclosed resonant antenna of the high-gain of Sidelobe, including close resonant cavity 2 and be located at closing
Feed 1 in resonant cavity 2.Feed 1 is made of micro-strip paster antenna.
As in Figure 2-4, closing resonant cavity 2 includes the partially reflecting surface 21, earth plate 23 and four walls that are parallel to each other, and four
Wall includes two metal electricity walls 24 being oppositely arranged and two magnetic walls 25 being oppositely arranged, wherein parallel with direction of an electric field for gold
Belong to electric wall 24, and it is parallel with magnetic direction for magnetic wall 25, wherein and magnetic wall 25 is made of artificial magnetic conductor 26.Part reflection table
The junction of face 21, earth plate 23, metal electricity wall 24 and magnetic wall 25 is connected and fixed by fastener.
Centre distance between partially reflecting surface 21 and metal ground plate 23 meets d=(1/2+n/2) λ0Condition, wherein
λ0For the free space wavelength of center frequency electromagnetic, n=0,1,2....Wherein n is integer.
Partially reflecting surface 21 is arranged several frequency-selective surfaces 22 (FSS) by the period on two orthogonal directions and constitutes, such as
Shown in Fig. 5, it is P that the cycle length of frequency-selective surfaces 22 (FSS) in 2 orthogonal directions is equalf, frequency-selective surfaces
The side length of Unit 22 is 2w.
As shown in fig. 6, the metal rectangular cells period for constituting artificial magnetic conductor 26 is PaSide length is 2a.
The design process of each structural parameters for ease of description gives structural parameters: the side of frequency-selective surfaces 22 (FSS)
Long 2w=3.9mm, period Pf=5mm, the metal rectangular cells period of artificial magnetic conductor 26 are Pa=3.4mm side length is 2a=
2.9mm, the side length of partially reflecting surface 21 are 30mm (about 1.45 λ0), centre frequency f=14.5GHz, earth plate 23 and portion
Divide the centre distance 6.5mm between reflecting surface 21, meets: 1/2 λ of d ≈0, wherein λ0For the free space of center frequency electromagnetic
Wavelength.The bore of antenna is 1.45 λ0*1.45λ0。
Select the high frequencies such as the Microwave Studio CST of HFSS, CST company of such as Ansoft company, simulation software imitative
True software, analog simulation obtains on computers: reflection coefficient chart as shown in Figure 7, gain frequency response curve shown in Fig. 8
Figure, the gain of antenna has reached 13.7dBi, corresponding aperture efficiency at centre frequency f=14.5GHz as can be seen from Figure
Reach 89%, elevation radiation patytern shown in Fig. 9, minor level is better than -16dB as seen from the figure, compares common surrounding and adds
The minor level (- 13dB) of such resonant antenna of the same bore of metallic walls is significantly improved, horizontal plane side shown in Fig. 10
Xiang Tu, minor level is better than -28dB as seen from the figure.Curve derived above obtains under prescribed conditions in fact, if changing knot
Structure parameter can also obtain similar curve.
The above is only the preferred embodiment of the utility model utility model, it should be pointed out that: for the art
Those of ordinary skill for, without departing from the principle of this utility model, several improvements and modifications can also be made, this
A little improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of totally-enclosed resonant antenna of the high-gain of Sidelobe, it is characterised in that: including closing resonant cavity (2) and be located at closing
Feed (1) in resonant cavity (2), the closing resonant cavity (2) includes partially reflecting surface disposed in parallel (21) and connecing
Floor (23), is arranged four walls between the partially reflecting surface (21) and earth plate (23), and four walls include two and set relatively
The metal electricity wall (24) set and two magnetic walls (25) being oppositely arranged.
2. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 1, it is characterised in that: the feedback
Source (1) is made of micro-strip paster antenna, and feed (1) setting is in the middle part of earth plate (23).
3. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 1, it is characterised in that: the gold
The electric wall (24) of category is parallel with direction of an electric field, and the magnetic wall (25) is parallel with magnetic direction.
4. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 3, it is characterised in that: the magnetic
Wall (25) is made of artificial magnetic conductor (26).
5. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 3, it is characterised in that: the portion
The junction of reflecting surface (21), earth plate (23), metal electricity wall (24) and magnetic wall (25) is divided to be connected and fixed by fastener.
6. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 1, it is characterised in that: the portion
The centre distance between reflecting surface (21) and earth plate (23) is divided to meet d=(1/2+n/2) λ0, wherein λ0For center frequency electromagnetic
The free space wavelength of wave, n are integer.
7. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 1, it is characterised in that: the portion
It is divided to reflecting surface (21) that several frequency-selective surfaces (22) are arranged by the period on two orthogonal directions to constitute, frequency-selective surfaces
(22) in 2 orthogonal directions cycle length is equal.
8. a kind of totally-enclosed resonant antenna of high-gain of Sidelobe according to claim 4, it is characterised in that: the people
Work magnetic conductor (26) is made of metal rectangular cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969996.7U CN209232950U (en) | 2018-11-27 | 2018-11-27 | A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821969996.7U CN209232950U (en) | 2018-11-27 | 2018-11-27 | A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe |
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| Publication Number | Publication Date |
|---|---|
| CN209232950U true CN209232950U (en) | 2019-08-09 |
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| CN201821969996.7U Expired - Fee Related CN209232950U (en) | 2018-11-27 | 2018-11-27 | A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361057A (en) * | 2018-11-27 | 2019-02-19 | 东南大学 | A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe |
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2018
- 2018-11-27 CN CN201821969996.7U patent/CN209232950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361057A (en) * | 2018-11-27 | 2019-02-19 | 东南大学 | A kind of totally-enclosed resonant antenna of the high-gain of Sidelobe |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190809 |
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| CF01 | Termination of patent right due to non-payment of annual fee |