CN108023184A - A kind of two-tube monopole liquid antenna - Google Patents
A kind of two-tube monopole liquid antenna Download PDFInfo
- Publication number
- CN108023184A CN108023184A CN201711098030.0A CN201711098030A CN108023184A CN 108023184 A CN108023184 A CN 108023184A CN 201711098030 A CN201711098030 A CN 201711098030A CN 108023184 A CN108023184 A CN 108023184A
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- monopole
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- 239000007788 liquid Substances 0.000 title claims abstract description 71
- 230000005404 monopole Effects 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims abstract description 15
- 239000000615 nonconductor Substances 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000012153 distilled water Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 2
- 238000010025 steaming Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 18
- 238000004891 communication Methods 0.000 abstract description 7
- 239000002609 medium Substances 0.000 description 9
- 239000013535 sea water Substances 0.000 description 9
- 239000012736 aqueous medium Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000012267 brine Substances 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
-
- 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
-
- 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
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
-
- 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
Abstract
The invention discloses a kind of two-tube monopole liquid antenna, include that inside and outside nested type is two-tube, base, coaxial feed port, feed probes and metal floor with through hole；Wherein, nested type is two-tube inside and outside described is vertically mounted on base, inner tube is injected with non-conductor liquid, conductor liquid is injected between inner and outer pipe, the base is fixed on metal floor, one end of the feed probes puts in the through hole of base and is in contact with the non-conductor liquid in inner tube after passing through metal floor, its other end installs coaxial feed port；Conductor liquid in non-conductor liquid and outer tube in inner tube introduces two different patterns, and the frequency of two patterns of size Control by adjusting inner and outer tubes, is coupled by the interstitial site implementation pattern adjusted between two liquid, finally realize broadband character.Inventive antenna is simple in structure, while has the characteristics that high radiation efficiency and broadband, can be applied to wireless communication devices.
Description
Technical field
The present invention relates to the technical field of antenna, refers in particular to a kind of two-tube monopole liquid antenna.
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 some systems of communication field, traditional antenna has been unable to meet corresponding requirements, new
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：1st, it is small, medium
When resonant aerial is using fluent material as medium, it can be reduced in antenna size principleThis coefficient factor；2nd, easy configuration
There is mobility with reconfigurability, liquid, be easy to antenna to be processed into expected configuration, and can be by varying liquid flow
Highly the change of resonant frequency and bandwidth is realized with diameter；3rd, opposing metallic material cost is relatively low；4th, small radar cross section, the same day
Line suspends in use, liquid therein can be emptied, and the radar cross section of media Containers is less than metal；5th, easy to transmitting.
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 ".2005, E.Paraschakis et al. made aerial radiation using saline solution
Unit, frequency, impedance bandwidth can be obtained by adjusting different brine strengths, different pvc pipe footpaths and the different depth of water
Restructural characteristic.Earliest Practical liquid antenna surely belongs to seawater antenna, since seawater is a kind of liquid for easily being obtained on the earth
Body, particularly under marine environment, so seawater antenna is mainly used for maritime communication and ship communications.2012, D.W.Tam was carried
A seawater monopole antenna is gone out, water pump sprays radiator of the effluent column as monopole antenna, and the length of water column determines day
The working frequency of line, the size of water column diameter determine bandwidth.2012, Lei Xing, Yi Huang et al. were in seawater and floor
Between loaded medium, widened impedance bandwidth.2015, Yi Huang et al. in loaded medium layer to resonant frequency and
The influence of radiation efficiency is analyzed.2014, Zhongxiang Shen et al. utilized the feed of top metal-loaded disk
Probe excitation seawater monopole antenna improves the radiation efficiency of antenna, analyzes concentration of seawater in text, the radius of seawater is to spoke
Penetrate the influence of efficiency.2015, Zhongxiang Shen et al. proposed the spoke using parallelly feeding structural improvement seawater antenna
Efficiency is penetrated, impedance matching and radiation efficiency are adjusted by the position for adjusting conductor tube height and short dot.2014,
Zhenxin Hu, Zhongxiang Shen et al. proposes a leaky-wave antenna based on cycle sink, by adjusting sink
Width and between spacing can realize the restructural of antenna radiation pattern.
Nineteen eighty-three, after the article of Long is delivered, dielectric resonator is just widely accepted as the idea of antenna and gradual quilt
Concern and research.In recent years, since distilled water has higher dielectric constant, one is provided for miniaturization medium resonator antenna
The new designing scheme of kind, and due to the mobility of water, can be to avoid between medium and floor and medium and feed probes
Gap, so as to avoid the influence to resonance and impedance thus brought.H.Fayad et al., which is proposed, utilizes variable height
Liquid aqueous medium resonant aerial.When pure water is operated in more than 1GHz, its dielectric property with frequency variation tendency increasingly
Greatly.The frequency response of the dielectric constant of metal ion meeting buffered water in brine, but since the presence of metal ion adds
The conductor losses of medium resonator antenna, reduces the radiation efficiency of antenna.2013, Rongguo Zhou et al. proposed base
In the method that aqueous medium resonator theory measures the dielectric property of liquid.In order to make full use of the frequency of aqueous medium resonator
Advantage that rate is adjustable, Steven G.O ' Keefe realized the adjustable sky-line in broadband in 2007 using variable feed structure.It is right
In aqueous medium resonant aerial, higher dielectric constant causes impedance bandwidth to narrow.Broadband character in order to obtain, Yi Huang etc.
People proposes a kind of antenna of mixed structure, and multi-mode antenna architectures are formed using feed structure and aqueous medium resonator.This is mixed
Structure is closed to exist | S11 |<Relative bandwidth is up to 71.8% under conditions of -6dB, and radiation efficiency is more than 70%.2013,
K.M.Luk et al. is proposed, by the way that the metal patch in microstrip antenna to be changed into the thin-medium plate of a high-k, forms one
A new dielectric patch antenna, be named as " dense dielectric patch antenna ", it is and micro- in microwave low-frequency range
There is similar characteristic with antenna.2015, Luk et al. devised a aqueous medium patch day using the high-k characteristic of water
Line, its field distribution is concentrated mainly on dielectric layer between water and floor, and the field distribution in water is weaker, so as to reduce due to water
Dielectric loss caused by radiation loss, then improve the radiation efficiency of the sky-line.2015, Y.Huang professors et al.
The DVB-H antennas of a compact frequency reconfigurable based on water loading are devised, antenna has the size of very little.2008,
A.Traille et al. proposes a kind of new liquid antenna for bio signal detection, and the concept of liquid antenna is used to give birth to
Thing medical field.
The content of the invention
It is an object of the invention to solve liquid antenna higher frequency band (>The problem of poor efficiency 2GHz), it is proposed that one
The two-tube monopole liquid antenna of kind, the antenna structure is simple, while has the characteristics that high radiation efficiency and broadband, can be applied to nothing
Line communication system equipment.
To achieve the above object, technical solution provided by the present invention is：A kind of two-tube monopole liquid antenna, includes
Inside and outside nested type is two-tube, base, coaxial feed port, feed probes and metal floor with through hole；Wherein, it is described inside and outside nested
Formula is two-tube to be vertically mounted on base, and inner tube is injected with non-conductor liquid, and conductor liquid, the bottom are injected between inner and outer pipe
Seat is fixed on metal floor, one end of the feed probes pass through put in after metal floor it is non-in the through hole and inner tube of base
Conductor liquid is in contact, its other end installs coaxial feed port；The conductor liquid in non-conductor liquid and outer tube in inner tube
Body introduces two different patterns, the frequency of two patterns of size Control by adjusting inner and outer tubes, by adjusting two liquid
Interstitial site implementation pattern coupling between body, finally realizes broadband character.
For the height of the base up to λ/100- λ/4, λ is the wavelength of working frequency.
The inside and outside nested type it is two-tube for coaxial acrylic it is two-tube or coaxial polytetrafluoroethylene (PTFE) is two-tube.
The non-conductor liquid is distilled water.
The conductor liquid is brine.
Described two-tube and base is concentric cylinder.
The base is polytetrafluoroethylene (PTFE) base.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
1st, compared with existing monopole liquid antenna, the present invention introduces two kinds of different liquid by double pipe structure, interior
The pattern that liquid in outer tube is each introduced is effectively increased impedance bandwidth, and the coaxial purpose of fluid column is to encourage two in electric field point of maximum intensity
A pattern, realizes matched well, while liquid and base have cooperatively formed liquid resonant aerial (DRA) in inner tube,
Effectively increase the radiation efficiency of monopole liquid antenna.
2nd, compared with existing monopole liquid antenna, double pipe structure of the invention uses non-external coaxial form, effectively
Realize the miniaturization of antenna.Meanwhile the coupling of two fluid columns can pass through the gap of two fluid columns of adjusting, i.e. inner tube position in inner and outer pipes
To realize.
Brief description of the drawings
Fig. 1 is the front view of two-tube monopole liquid antenna.
Fig. 2 is the stereogram of two-tube monopole liquid antenna.
Fig. 3 is the S parameter simulation result figure of two-tube monopole liquid antenna.
Fig. 4 is the radiation efficiency simulation result figure of two-tube monopole liquid antenna.
Embodiment
With reference to specific embodiment, the invention will be further described.
As depicted in figs. 1 and 2, the two-tube monopole liquid antenna that the present embodiment is provided, including inside and outside nested type it is two-tube,
Base 3, coaxial feed port 4, feed probes 5 and metal floor 6 with through hole；Wherein, it is same that the inside and outside nested type is two-tube
Axis is two-tube, and two-tube material can be acrylic, polytetrafluoroethylene (PTFE) or other dielectric substances, and preferred sub- gram in the present embodiment
Power, the material of the base 3 is polytetrafluoroethylene (PTFE) or other solid-state low loss dielectrics, and in the preferred polytetrafluoroethyl-ne of the present embodiment
Alkene；The inside and outside nested type is two-tube and base 3 is concentric cylinder, and this inside and outside nested type is two-tube is vertically mounted on base
On 3, inner tube 1 is injected with non-conductor liquid (preferably distilled water), and conductor liquid (preferably brine) is injected between inner and outer pipe 1,2,
The base 3 is fixed on metal floor 6, and one end of the feed probes 5 passes through the through hole that base 3 is put in after metal floor 6
It is in contact with the non-conductor liquid in inner tube 1, its other end installs coaxial feed port 4.
As shown in figure 3, the conductor liquid in non-conductor liquid and outer tube 2 in inner tube 1 introduces two different moulds respectively
Formula, two resonance points are controlled respectively by two fluid columns in figure.Resonance point 31 is determined by the radius and height of non-conductor liquid column, humorous
Shake and a little 32 determined by the radius and height of conductor liquid column.The coaxial purpose of fluid column is to encourage two patterns in electric field point of maximum intensity,
Realize matched well.Coupled by the gap implementation pattern adjusted between two fluid columns, two patterns are effectively combined by FREQUENCY CONTROL
Realize broadband feature, -15dB relative bandwidths are up to 50%.Also, form liquid by way of embedded non-conductor liquid column
DRA, makes antenna radiation efficiency reach as high as more than 85%.
As shown in figure 4, antenna realizes the characteristics of high radiation efficiency.The raising of radiation efficiency is attributed to the fact that at 2 points, a right and wrong
Conductor liquid column embeds, and is specifically the embedded of distilled water, second, the height of polytetrafluoroethylene (PTFE) base can reach λ/100- λ/4
(preferably λ/10), λ are the wavelength of working frequency.Distilled water DRA have the characteristics that in itself it is efficient, it is two-tube coaxially to realize broadband
While improve the radiation efficiency of antenna；Again since the relative dielectric constant of water is larger, about 81, and polytetrafluoroethylene (PTFE) base
Dielectric constant there was only 2.08, energy of electromagnetic field is concentrated mainly on the less material of dielectric constant, i.e., in polytetrafluoroethylene (PTFE), and poly-
Less than the dielectric loss of water, aerial radiation effect can be effectively improved by suitably increasing the height of polytetrafluoroethylene (PTFE) for the loss of tetrafluoroethene
Rate.
The analysis more than is it is recognised that inventive antenna has high radiation efficiency, broadband, the property for improving impedance matching
Can, it is worthy to be popularized.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
The change that all shape, principles according to the present invention are made, should all cover within the scope of the present invention.
Claims (7)
- A kind of 1. two-tube monopole liquid antenna, it is characterised in that：Include two-tube inside and outside nested type, base with through hole, same Axis feed port, feed probes and metal floor；Wherein, it is described it is inside and outside nested type is two-tube is vertically mounted on base, inner tube note Enter to have non-conductor liquid, conductor liquid is injected between inner and outer pipe, the base is fixed on metal floor, and the feed is visited One end of pin puts in the through hole of base and is in contact with the non-conductor liquid in inner tube after passing through metal floor, its other end is installed Coaxial feed port；Conductor liquid in non-conductor liquid and outer tube in inner tube introduces two different patterns, passes through adjusting The frequency of two patterns of size Control of inner and outer tubes, is coupled, most by the interstitial site implementation pattern adjusted between two liquid Broadband character is realized eventually.
- A kind of 2. two-tube monopole liquid antenna according to claim 1, it is characterised in that：The height of the base up to λ/ 100- λ/4, λ are the wavelength of working frequency.
- A kind of 3. two-tube monopole liquid antenna according to claim 1, it is characterised in that：The inside and outside nested type is two-tube It is two-tube or coaxial polytetrafluoroethylene (PTFE) is two-tube for coaxial acrylic.
- A kind of 4. two-tube monopole liquid antenna according to claim 1, it is characterised in that：The non-conductor liquid is steaming Distilled water.
- A kind of 5. two-tube monopole liquid antenna according to claim 1, it is characterised in that：The conductor liquid is salt Water.
- A kind of 6. two-tube monopole liquid antenna according to claim 3, it is characterised in that：Described two-tube and base is same The cylinder of the heart.
- A kind of 7. two-tube monopole liquid antenna according to claim 1 or 2 or 6, it is characterised in that：The base is poly- Tetrafluoroethene base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098030.0A CN108023184A (en) | 2017-11-09 | 2017-11-09 | A kind of two-tube monopole liquid antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711098030.0A CN108023184A (en) | 2017-11-09 | 2017-11-09 | A kind of two-tube monopole liquid antenna |
Publications (1)
| Publication Number | Publication Date |
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| CN108023184A true CN108023184A (en) | 2018-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711098030.0A Pending CN108023184A (en) | 2017-11-09 | 2017-11-09 | A kind of two-tube monopole liquid antenna |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808223A (en) * | 2018-06-28 | 2018-11-13 | 袁涛 | Direction reconfigurable antenna |
| CN110233348A (en) * | 2019-06-19 | 2019-09-13 | 哈尔滨工业大学 | A kind of universal salt water antenna feeding methods |
| CN110994153A (en) * | 2019-12-17 | 2020-04-10 | 西安电子科技大学 | Broadband liquid antenna |
| CN110994149A (en) * | 2019-12-06 | 2020-04-10 | 西安电子科技大学 | Conductive liquid antenna |
| CN111092294A (en) * | 2019-12-06 | 2020-05-01 | 西安电子科技大学 | Liquid antenna based on OAM single mode and mixed mode |
| CN113013597A (en) * | 2021-03-04 | 2021-06-22 | 西安电子科技大学 | Columnar broadband liquid antenna |
| CN114284737A (en) * | 2021-12-31 | 2022-04-05 | 湖南大学 | Full-transparent ultra-wideband high-gain liquid medium resonator antenna |
| CN114744395A (en) * | 2022-04-20 | 2022-07-12 | 湖南大学 | High-performance liquid antenna |
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| CN106450705A (en) * | 2016-11-29 | 2017-02-22 | 中国人民解放军国防科学技术大学 | Liquid mixing chamber type regulable antenna |
| CN206259487U (en) * | 2016-11-29 | 2017-06-16 | 中国人民解放军国防科学技术大学 | Liquid mixing cavate controllable antenna |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808223A (en) * | 2018-06-28 | 2018-11-13 | 袁涛 | Direction reconfigurable antenna |
| CN110233348A (en) * | 2019-06-19 | 2019-09-13 | 哈尔滨工业大学 | A kind of universal salt water antenna feeding methods |
| CN110994149A (en) * | 2019-12-06 | 2020-04-10 | 西安电子科技大学 | Conductive liquid antenna |
| CN111092294A (en) * | 2019-12-06 | 2020-05-01 | 西安电子科技大学 | Liquid antenna based on OAM single mode and mixed mode |
| CN111092294B (en) * | 2019-12-06 | 2021-09-10 | 西安电子科技大学 | Liquid antenna based on OAM single mode and mixed mode |
| CN110994153A (en) * | 2019-12-17 | 2020-04-10 | 西安电子科技大学 | Broadband liquid antenna |
| CN113013597A (en) * | 2021-03-04 | 2021-06-22 | 西安电子科技大学 | Columnar broadband liquid antenna |
| CN114284737A (en) * | 2021-12-31 | 2022-04-05 | 湖南大学 | Full-transparent ultra-wideband high-gain liquid medium resonator antenna |
| 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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Application publication date: 20180511 |