CN207834571U - A kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable - Google Patents
A kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable Download PDFInfo
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- CN207834571U CN207834571U CN201820099574.2U CN201820099574U CN207834571U CN 207834571 U CN207834571 U CN 207834571U CN 201820099574 U CN201820099574 U CN 201820099574U CN 207834571 U CN207834571 U CN 207834571U
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- antenna
- polarization
- media containers
- directional diagram
- aqueous medium
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Abstract
The utility model discloses a kind of aqueous medium resonant aerials of polarization and directional diagram reconstructable, including media Containers, dielectric support column, feed probes, coaxial feed port and metal floor；It is formed in media Containers there are two cavity, the top of two cavitys offers a ports valve respectively, by injecting high dielectric constant liquid from ports valve, can realize the circular polarisation of antenna difference rotation direction, if being all not injected into liquid, antenna is linear polarization；Media Containers are located above metal floor, it is supported by dielectric support column, so that there are air layers between media Containers and metal floor, a part for feed probes, which is put in media Containers, to be fed, and between two cavitys, another part passes through metal floor connection coaxial feed port down.The utility model antenna has polarization and directional diagram reconstructable, radiation efficiency high, and the wide feature of impedance bandwidth, antenna also has the characteristics that axial ratio bandwidth is wide, can be applied to satellite communication system when being circular polarisation.
Description
Technical field
The utility model is related to the technical fields of liquid antenna, refer in particular to a kind of water Jie of polarization and directional diagram reconstructable
Matter resonant aerial.
Background technology
It is higher and higher with the requirement to small size of communication system, communication applications to the small size of antenna, high efficiency and
The requirements such as high-gain are also higher and higher.In certain systems of communication field, traditional antenna has been unable to meet corresponding requirements, novel
Antenna comes into being.
The main material of traditional antenna is metal, and liquid antenna then replaces metal material with the liquid of conductive matter
Radiating element as antenna.As one kind of numerous new antennas, liquid antenna has the following advantages：(1) small, medium
When resonant aerial is using fluent material as medium, it can be reduced in antenna size principleThis coefficient factor；(2) easy structure
Type and there is reconfigurability, liquid has mobility, and antenna is easy to be processed into expected configuration, and can pass through and change liquid flow
Height and diameter realize the change of resonant frequency and bandwidth；(3) opposing metallic material cost is relatively low；(4) small radar cross section,
When antenna suspends in use, liquid therein can be emptied, the radar cross section of media Containers is less than metal；(5) it is convenient for transmission.
For using liquid antenna of the ionic liquid as radiating element, 2000 can be traced back to, uses salt at that time
Water, and introduce the concept of " ionic liquid antenna ".Nineteen eighty-three, after the article of Long is delivered, dielectric resonator is as antenna
Idea is just widely accepted and is gradually concerned and studies.There are many shapes of dielectric resonator, and design has prodigious flexible
Property, the range of choice of dielectric constant is very big (6-140), and designer is allowed flexibly to control size and bandwidth.Medium is surrounded in recent years
The research of resonant aerial is concentrated mainly on the following aspects：Circularly polarized dielectric resonator antenna, high gain medium resonator
Antenna, broadband medium resonator antenna and dual polarization medium resonator antenna.
In recent years, since distilled water has higher dielectric constant, one kind is provided for miniaturization medium resonator antenna
New design scheme, and due to the mobility of water, it can be to avoid the seam between medium and floor and medium and feed probes
Gap, to avoid the influence to resonance and impedance thus brought.H.Fayad et al. proposes the liquid using a variable height
Body aqueous medium resonant aerial.When pure water is operated in 1GHz or more, dielectric property is increasing with the variation tendency of frequency.
The frequency response of the dielectric constant of metal ion meeting buffered water in brine, but since the presence of metal ion increases medium
The conductor losses of resonant aerial reduces the radiation efficiency of antenna.2013, Rongguo Zhou et al. were proposed based on water
The method that dielectric resonator theory measures the dielectric property of liquid.In order to make full use of the frequency of aqueous medium resonator can
Tuning point, Steven G.O ' Keefe realized the adjustable sky-line in broadband in 2007 using variable feed structure.For water
Medium resonator antenna, higher dielectric constant cause impedance bandwidth to narrow.Broadband character in order to obtain, Yi Huang et al. are carried
A kind of antenna of mixed structure is gone out, multi-mode antenna architectures is formed using feed structure and aqueous medium resonator.This mixing knot
Structure exists | S11 |<Relative bandwidth is up to 71.8% under conditions of -6dB, and radiation efficiency is 70% or more.
Simultaneously as liquid antenna have the characteristics that it is restructural, in design circular polarisation or dual polarization medium resonator antenna
When, fluent material is easy to the perturbation unit as antenna, realizes that the polarization of antenna is restructural by the injection or output of liquid.
Hang Wong et al. propose a restructural circular polarisation liquid antenna, and antenna is interior using truncated cubic container as prototype
Ethyl acetate is noted, probe is fed in incisal angle edge, is formed two mutually orthogonal fields, is realized the circular polarization characteristics of antenna.Hold
Device mirror symmetry, respectively container both sides injection ethyl acetate may be implemented antenna polarization it is restructural.
In Modern Satellite television transmission, vertical polarization and horizontal polarization, left-hand circular polarization and the phase of right-handed circular polarization are utilized
The characteristic of mutual isolation transmits different TV programme, to improve the transmission capacity of satellite.Circularly polarised wave and line polarization wave respectively have excellent
Disadvantage, for circularly polarised wave when across misty rain layer and ionosphere, the loss of introducing is small, and the rotation of line polarization wave plane of polarization is also not present
Problem, and the great advantage of line polarization wave is to realize simply.The easy reconstruct feature of liquid antenna is expected to realize in same common antenna
Linear polarization, left-hand circular polarization and right-handed circular polarization it is restructural.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, it is proposed that a kind of to polarize and directional diagram reconstructable
Aqueous medium resonant aerial, the antenna have the characteristics that circular polarization characteristics and axial ratio bandwidth are wide, and antenna radiation efficiency is high, can apply
In satellite communication system.
To achieve the above object, technical solution provided by the utility model is：It is a kind of to polarize and directional diagram reconstructable
Aqueous medium resonant aerial includes media Containers, dielectric support column, feed probes, coaxial feed port and metal floor；Its
In, the inside of the media Containers is formed there are two cavity, and the top of two cavitys offers a ports valve respectively, by from
Ports valve injects high dielectric constant liquid, can realize the circular polarisation of antenna difference rotation direction, if being all not injected into liquid, antenna
For linear polarization；The media Containers are located at the top of metal floor, and are supported by dielectric support column so that the media Containers
There are air layer between metal floor, a part for the feed probes, which is put in media Containers, to be fed, and is located at two
Between a cavity, another part passes through metal floor connection coaxial feed port down.
Described two cavitys are mirror image, and the plane of symmetry institute that the feed probes are located at two cavitys is in place
It sets.
The cavity is cylinder or class cylindrical structure.
The media Containers are cylinder or class cylindrical structure.
The utility model compared with prior art, has the following advantages that and advantageous effect：
1, compared with existing medium resonator antenna, the utility model using high-k fluent material as medium,
Using low-loss medium as container, effectively realizes the miniaturization of antenna and ensure antenna efficiency.
2, compared with existing medium resonator antenna, the utility model efficiently uses the mobility and liquid of fluent material
The easy reconstruct feature of antenna realizes polarization and the directional diagram reconstructable of antenna by injecting liquid in different cavitys.
3, compared with existing liquid antenna, it is restructural that the utility model by two symmetrical cavity structures realizes rotation direction
Circular polarisation, antenna has the characteristics that impedance bandwidth is wide and axial ratio bandwidth is wide.
Description of the drawings
Fig. 1 is the stereogram of aqueous medium resonant aerial.
Fig. 2 is the vertical view of aqueous medium resonant aerial.
Fig. 3 is the left-hand circular polarization radiance simulation result diagram of aqueous medium resonant aerial.
Fig. 4 is the right-handed circular polarization radiance simulation result diagram of aqueous medium resonant aerial.
Fig. 5 is the linearly polarized radiation Performance Simulation Results figure of aqueous medium resonant aerial.
Specific implementation mode
With reference to specific embodiment, the utility model is described in further detail.
As shown in Figure 1, 2, the aqueous medium resonant aerial that the present embodiment is provided, including media Containers 1, dielectric support column
2, feed probes 3, coaxial feed port 4 and metal floor 5；Wherein, the media Containers 1 are cylinder or class cylinder knot
Structure, the interior cavity 6,7 formed there are two mirror symmetry, two cavitys 6,7 are cylinder or class cylindrical structure, are located at Jie
The top of the right and left in matter container 1, two cavitys 6,7 is respectively kept with a ports valve 8,9, by injecting high dielectric from ports valve
Constant media fluid, may be implemented the circular polarisation of antenna difference rotation direction, if being all not injected into liquid, antenna is linear polarization；It is described
Media Containers 1 are located at the top of metal floor 5, and are supported by four dielectric support columns 2 so that the media Containers 1 and gold
There are air layer between possession plate 5, a part for the feed probes 3, which is put in media Containers 1, to be fed, and is located at two
The plane of symmetry position of cavity 6,7, another part pass through metal floor 5 to connect coaxial feed port 4 down.When from ports valve
8 toward cavity 6 inject distilled water when antenna be left-hand circular polarization, when from ports valve 9 toward cavity 7 inject distilled water when antenna be dextrorotation circle
Polarization, if cavity 6 and 7 is all not injected into distilled water, antenna is linear polarization, and the directional diagram of antenna is also therewith under three kinds of different conditions
Variation, realizes the directional diagram reconstructable of antenna.Air layer between the media Containers 1 and metal floor 5 is for attracting electromagnetism
Field energy, to improve antenna radiation efficiency.The feed probes 3 are inserted into the plane of symmetry position of two cavitys 6,7, make day
Line is axially symmetric structure, and when antenna circular polarisation rotation direction and directional diagram change, other radiances of antenna are constant.
As shown in Figure 3,4, when cavity 6,7 is injected separately into distilled water, the bandwidth characteristic of antenna is constant, and polarized gain and
The faces XOY directional diagram changes.That is, since there is antenna mirror image, antenna can not change radiation frequency
The restructural of circular polarisation rotation direction and directional diagram is realized under the premise of band.As shown in figure 5, when cavity 6,7 is all not injected into distilled water,
Antenna is linear polarization, and radiation is similar to monopole antenna.
By analyze above it is recognised that the utility model antenna have polarization and directional diagram reconstructable, axial ratio bandwidth it is wide,
The high performance of radiation efficiency has actual promotional value, is worthy to be popularized.
Embodiment described above is only the preferred embodiment of the utility model, and the implementation of the utility model is not limited with this
Range, therefore change made by all shapes according to the utility model, principle, it should all cover within the protection scope of the present utility model.
Claims (4)
1. a kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable, it is characterised in that：Include media Containers, medium
Support column, feed probes, coaxial feed port and metal floor；Wherein, the inside of the media Containers is formed there are two cavity,
The top of two cavitys offers a ports valve respectively, by injecting high dielectric constant liquid from ports valve, can realize
The circular polarisation of antenna difference rotation direction, if being all not injected into liquid, antenna is linear polarization；The media Containers are located at metal floor
Top, and be supported by dielectric support column so that there are air layers, the feed to visit between the media Containers and metal floor
A part for needle, which is put in media Containers, to be fed, and between two cavitys, and another part is down across metal
Plate connects coaxial feed port.
2. the aqueous medium resonant aerial of a kind of polarization and directional diagram reconstructable according to claim 1, it is characterised in that：
Described two cavitys are mirror image, and the feed probes are located at the plane of symmetry position of two cavitys.
3. the aqueous medium resonant aerial of a kind of polarization and directional diagram reconstructable according to claim 1, it is characterised in that：
The cavity is cylinder or class cylindrical structure.
4. the aqueous medium resonant aerial of a kind of polarization and directional diagram reconstructable according to claim 1, it is characterised in that：
The media Containers are cylinder or class cylindrical structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820099574.2U CN207834571U (en) | 2018-01-22 | 2018-01-22 | A kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820099574.2U CN207834571U (en) | 2018-01-22 | 2018-01-22 | A kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable |
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| Publication Number | Publication Date |
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| CN207834571U true CN207834571U (en) | 2018-09-07 |
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| CN201820099574.2U Expired - Fee Related CN207834571U (en) | 2018-01-22 | 2018-01-22 | A kind of aqueous medium resonant aerial of polarization and directional diagram reconstructable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258418A (en) * | 2018-01-22 | 2018-07-06 | 华南理工大学 | A kind of aqueous medium resonant aerial to polarize with directional diagram reconstructable |
| CN109638426A (en) * | 2018-11-19 | 2019-04-16 | 南京邮电大学 | A kind of circular polarized antenna based on gravitational field regulation liquid metal |
| CN111029785A (en) * | 2019-12-05 | 2020-04-17 | 宁波大学 | Artificial magnetic conductor structure |
| CN112701438A (en) * | 2020-12-22 | 2021-04-23 | 华南理工大学 | Polarization reconfigurable bidirectional co-rotation direction circularly polarized antenna based on dielectric polarizer |
| CN114744395A (en) * | 2022-04-20 | 2022-07-12 | 湖南大学 | High-performance liquid antenna |
-
2018
- 2018-01-22 CN CN201820099574.2U patent/CN207834571U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258418A (en) * | 2018-01-22 | 2018-07-06 | 华南理工大学 | A kind of aqueous medium resonant aerial to polarize with directional diagram reconstructable |
| CN109638426A (en) * | 2018-11-19 | 2019-04-16 | 南京邮电大学 | A kind of circular polarized antenna based on gravitational field regulation liquid metal |
| CN111029785A (en) * | 2019-12-05 | 2020-04-17 | 宁波大学 | Artificial magnetic conductor structure |
| CN112701438A (en) * | 2020-12-22 | 2021-04-23 | 华南理工大学 | Polarization reconfigurable bidirectional co-rotation direction circularly polarized antenna based on dielectric polarizer |
| CN112701438B (en) * | 2020-12-22 | 2022-03-29 | 华南理工大学 | Polarization reconfigurable bidirectional co-rotation direction circularly polarized antenna based on dielectric polarizer |
| CN114744395A (en) * | 2022-04-20 | 2022-07-12 | 湖南大学 | High-performance liquid antenna |
| CN114744395B (en) * | 2022-04-20 | 2023-03-24 | 湖南大学 | High-performance liquid antenna |
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Granted publication date: 20180907 Termination date: 20210122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |