CN106374185A - Flexible, foldable and adjustable liquid spiral antenna - Google Patents
Flexible, foldable and adjustable liquid spiral antenna Download PDFInfo
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- CN106374185A CN106374185A CN201611004737.6A CN201611004737A CN106374185A CN 106374185 A CN106374185 A CN 106374185A CN 201611004737 A CN201611004737 A CN 201611004737A CN 106374185 A CN106374185 A CN 106374185A
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- helical antenna
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- 239000007788 liquid Substances 0.000 title claims abstract description 131
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 230000005855 radiation Effects 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 15
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001338 liquidmetal Inorganic materials 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001473780 Sideroxylon lanuginosum Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/14—Supports; Mounting means for wire or other non-rigid radiating elements
-
- 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
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- Details Of Aerials (AREA)
Abstract
The invention provides a flexible, foldable and adjustable liquid spiral antenna comprising a liquid antenna and a feed end, and the liquid antenna is arranged in such a way that a helical structure is formed; the liquid antenna comprises a hollow flexible pipe and electric conduction liquid injected into the flexible pipe, the feed end comprises a micro-strip substrate and a coaxial joint arranged on the micro-strip substrate, and a probe communicated with the electric conduction liquid in the liquid antenna is arranged in the coaxial joint. Effects of application of the flexible, foldable and adjustable liquid spiral antenna are that the antenna is concise and simple in structure; horizontally omnibearing radiation, axial radiation and circumferential radiation at an oblique upper part can be realized due to the helical structure of the liquid antenna; demand for omnibearing radiation in real life can be satisfied, high radiation performance can be realized, manual performance adjustment and control can be achieved, a combination of the hollow flexible pipe and the electric conduction liquid is adopted in the liquid antenna, the antenna is high in flexibility and light in weight, and the antenna is foldable and is convenient to install and store.
Description
Technical field
The present invention relates to communication technique field is and in particular to a kind of flexible foldable regulatable liquid helical antenna.
Background technology
In prior art, common wireless system includes radar, communication, navigation etc., and its antenna is typically metal material, or
Metal and the mixed structure of solid dielectric.Existing liquid antenna mainly includes two classes:
The first, liquid metal antenna, the performance boost of this antenna and technology maturity are highly dependent on liquid metal
The research and development of material, its method for designing is close with common metal antenna.Currently, room temperature liquid metal type and quantity have
Limit, still in phase of basic research.
Second, nonmetallic liquid antenna, this kind of antenna mainly applies sea water, saline, pure water or other are organic and inorganic
Liquid realizes antenna structure as radiant body, design.Through the Literature Consult to the nonmetallic liquid antenna delivered both at home and abroad,
Obtain research at present, specifically include that (1) uses water pumper, water pump extracting seawater, eject, form parabola, semi-circular arc
Shape or the whiplike element antenna of upright single armed, are mainly used in naval vessel temporary wireless communication under marine environment；(2) to replace with liquid passing
A part of structure of system metal antenna, realizes the mixing of liquid and solid, such as liquid micro-strip paster antenna, and substrate is that solid is situated between
Matter, its patch portion is replaced by the liquid being contained in plastic casing；Or, realize liquid and load, to virgin metal antenna, add one
Partially liq structure, improves the performance of certain aspect；(3) the static liquid antenna of conventionally form.Specifically include that liquid medium resonance
Antenna, liquid monopoles antenna etc..
Antenna present in prior art mainly has following weak point: the weak point of (1) metal antenna mainly has: electricity
The usual not restructural of gas performance, user can not or cannot adjust during using, and weight is larger, and price is higher；(2) use water pump
Sea water antenna volume is big, and energy consumption is big；(3) deficiency of cloth fabric antenna, it is weak to be primarily due to its electric conductivity, leads to radianting capacity
Weak, radiation gain is low, and efficiency is low, and energy loss is larger；(4) deformed Oscillators antenna and magnetic loop antenna, and button antenna and skin
Bracelet antenna, has individual common feature to be that physical size is little, limited by electric size, radiation directivity is weaker, radiates and receives radio
Energy is not concentrated.
In sum, be badly in need of a kind of structure is simplified, easy to carry, angle of radiation is extensive and performance is good liquid antenna with
Solve problems of the prior art.
Content of the invention
Present invention aim at providing a kind of structure to simplify, that easy to carry, angle of radiation scope is big and performance is good is soft
The foldable regulatable liquid helical antenna of property, concrete technical scheme is as follows:
A kind of regulatable liquid helical antenna of flexible foldable, the liquid antenna including helically structure setting and with
The feed end that liquid antenna connects；
The conducting liquid that described liquid antenna includes hollow flexible pipe and injects described inside hose；
Described feed end includes micro-strip substrate and is arranged on the coaxial fitting on described micro-strip substrate；Described coaxial fitting
Inside it is provided with the probe connecting with the conducting liquid in described liquid antenna；
One end of described liquid antenna is connected with coaxial fitting, and its other end is provided with the sealing for sealing conducting liquid
Part.
In above technical scheme preferably, also include hollow support pipe, one end of described support pipe is fixed on institute
State on micro-strip substrate, described liquid antenna helically rises shape and is wrapped on the outer wall of described support pipe.
In above technical scheme preferably, the central axis upright of described support pipe is in the upper surface of described micro-strip substrate
Setting, and the central point of the upper surface of described micro-strip substrate is on the central axis of described support pipe；Described coaxial fitting
Run through described micro-strip substrate setting, and it is close to the outer wall setting of described support pipe.
In above technical scheme preferably, described conducting liquid is sodium chloride solution, and wherein, the concentration of sodium chloride is
3.5%.
In above technical scheme preferably, the internal diameter of described support pipe, external diameter and length be respectively 8mm, 10mm and
185mm；The material of described support pipe is rigid plastics.
In above technical scheme preferably, the material of described micro-strip substrate is rogers rt5880, its length and width and high score
Not Wei 100mm, 70mm and 1.2mm, its dielectric constant be 2.2.
In above technical scheme preferably, described liquid antenna includes vertical section and the spiral being sequentially connected in series from the bottom to top
Section, the lower end of described vertical section is connected with described coaxial fitting, and the upper end of described vertical section is connected with the lower end of described spiral section；
The height of described vertical section is 17mm；In described spiral section: spiral number of turns are 8, pitch is 21mm.
In above technical scheme preferably, the diameter of described vertical section and spiral section is 25mm.
In above technical scheme preferably, described sealing member includes clip or sealing plug.
Application technical scheme, has the advantages that
(1) flexible foldable of the present invention regulatable liquid helical antenna includes the liquid antenna of helically structure setting
And feed end；The conducting liquid that described liquid antenna includes hollow flexible pipe and injects described inside hose；Described feed
End includes micro-strip substrate and is arranged on the coaxial fitting on described micro-strip substrate；It is provided with described coaxial fitting and described liquid
The probe of the conducting liquid connection in antenna.The flexible foldable regulatable liquid helical antenna structure of the present invention is simplified；Liquid
Body antenna helically structure setting, the radiation of achievable horizontal omnidirectional, axial direction and oblique upper circumferencial direction, meet actual life
The demand of middle Omnidirectional radiation, and radiance is good；Liquid antenna adopts the combination of hollow flexible pipe and conducting liquid, flexible
Good, foldable, it is easily installed and receive；Selected micro-strip substrate can adopt following structure: only bottom surface is conductive, with support tube and
The upper surface of conducting liquid place flexible pipe contact is dielectric insulation materials.
(2) also include hollow support pipe in the present invention, one end of described support pipe is fixed on described micro-strip substrate
On, described liquid antenna is spirally wrapped around on the outer wall of described support pipe.Support that pipe is used for supporting liquid antenna, just
In installation and use.The position relationship setting of micro-strip substrate, support pipe and coaxial fitting, enables to distributing point position first
In the edge of spiral upright projection disc, obtain equal diameter structure；Next can ensure that firm feed connection is installed；Again can
Enough metallic reflection planes good for the offer of fluid radiation structure, improve the forward radiation ability of antenna.
(3) in the present invention, conducting liquid is sodium chloride solution, and wherein, the concentration of sodium chloride is 3.5%.Liquid antenna adopts
Flexible pipe and sodium chloride solution, low cost.Sodium chloride solution is preferably the solution chosen before saturation, and its concentration is higher, electric conductivity
Better, so that the radiation effect of antenna is more preferably.In terms of the selection of liquid, in addition to dielectric resonator antenna, including this
Bright helical antenna in interior plurality of liquid antenna it is necessary to using having the liquid of certain conductive capability, can be single from
The sea water of sub- liquid or mixture, saline solution etc., but can not be that gasoline, pure water, edible oil, methanol, ether etc. are non-conductive
Liquid.
(4) in the present invention, the internal diameter of support pipe, external diameter and length are respectively 8mm, 10mm and 185mm；Described holds round
The material of pipe is rigid plastics, and material is readily available, and is easy to make.
(5) in the present invention, the material of micro-strip substrate is rogers rt5880, and its length and width and height are respectively 100mm, 70mm
And 1.2mm, its dielectric constant is 2.2, meets the demand of fluid present invention Antenna Impedance Matching aspect, improves the overall spoke of antenna
Penetrate efficiency.
(6) heretofore described liquid antenna includes vertical section and the spiral section being sequentially connected in series from the bottom to top, upper end spiral shell
Rotation can play electromagnetic wave guiding function, strengthens the forward radiation ability of antenna successively.The dimensions of vertical section and spiral section sets
Meter, directly related with the operation wavelength of antenna.Particularly screw diameter and the ratio of wavelength, decide Antenna gain pattern,
The final impact distribution in space for the electromagnetic wave.And the pitch of antenna affects the electromagnetic coupled between adjoining spiral, to radiation direction
Property also has a certain impact.
(7) in the present invention, the top of liquid antenna is sealed by comprising the sealing member of clip or sealing plug, and part holds
Easily obtain it is ensured that liquid antenna normally uses.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the flexible foldable regulatable liquid helical antenna of the preferred embodiment of the present invention 1；
Fig. 2 is the sectional drawing of liquid antenna in Fig. 1；
Fig. 3 is the screw diameter of flexible foldable regulatable liquid helical antenna and radiation directivity in embodiment 1
Graph of a relation；
Fig. 4 is the Polar Coordinate Two-dimensional directional diagram of horizontal omnidirectional liquid helical antenna in embodiment 1；
Fig. 5 is the Polar Coordinate Two-dimensional directional diagram of axial radiation fluid helical antenna in embodiment 1；
Fig. 6 is the Polar Coordinate Two-dimensional directional diagram of oblique upper radiation fluid helical antenna in embodiment 1；
Fig. 7 is the impact schematic diagram of excitation and the impedance matching property to liquid helical antenna for the feed probes length；
Fig. 8 is the impact schematic diagram of the impedance matching property to liquid helical antenna for the micro-strip dielectric substrate thickness；
Fig. 9 is the impact schematic diagram of the feed impedance matching to liquid helical antenna for the section liquid radius；
Figure 10 is the comparison chart with simulation result for the liquid helical antenna reflection coefficient of actual measurement；
Figure 11 is to carry out one of liquid helical antenna Pattern measurement schematic diagram in microwave dark room；
Figure 12 is to carry out the two of liquid helical antenna Pattern measurement schematic diagram in microwave dark room；
Wherein, 1, liquid antenna, 1.1, flexible pipe, 1.2, conducting liquid；
2nd, feed end, 2.1, micro-strip substrate, 2.2, coaxial fitting, 2.3, probe；
3rd, support pipe；
A, vertical section, b, spiral section.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can limit according to claim
Multitude of different ways that is fixed and covering is implemented.
Embodiment 1:
Referring to Fig. 1-2, a kind of regulatable liquid helical antenna of flexible foldable, can carry with, when needs
Take out and install, reality is exactly simply to be wound around.Without when, folding storage, light, be convenient for carrying it is easy to use.
The flexible foldable regulatable liquid helical antenna of the present embodiment includes the liquid antenna of helically structure setting
1 feed end 2 being connected with described liquid antenna 1 and hollow support pipe 3.
Described liquid antenna 1 includes the conducting liquid 1.2 within hollow flexible pipe 1.1 and the described flexible pipe 1.1 of injection, this
The flexible pipe at place is gum elastic flexible pipe, and its internal diameter and external diameter are respectively 1.5mm and 2.5mm；Described conducting liquid 1.2 adopts chlorination
The concentration of sodium solution, wherein sodium chloride is 3.5%.
Described feed end 2 includes micro-strip substrate 2.1 and is arranged on coaxial fitting 2.2 on described micro-strip substrate 2.1, institute
The one end stating support pipe 3 is fixed on described micro-strip substrate 2.1, described liquid antenna 1 helically rise shape be wrapped in described
On the outer wall of support pipe 3, specifically: the central axis upright of described support pipe 3 is in the upper surface of described micro-strip substrate 2.1
Setting, and the central point of the upper surface of described micro-strip substrate 2.1 is on the central axis of described support pipe 3；Described coaxial
Joint 2.2 runs through described micro-strip substrate 2.1 and arranges, and it is close to the outer wall setting of described support pipe 3.Described coaxial fitting
It is provided with the probe 2.3 connecting with the conducting liquid 1.2 in described liquid antenna 1 in 2.2.One end of described liquid antenna 1 and institute
State coaxial fitting 2.2 to connect, its other end is provided with that (sealing member includes clip for the sealing member that seals described conducting liquid 1.2
Or sealing plug).
The internal diameter of described support pipe 3, external diameter and length hs are respectively 8mm, 10mm and 185mm；Described support pipe 3
Material is rigid plastics.
The material of described micro-strip substrate 2.1 is rogers rt5880, its long lg, width and high respectively 100mm, 70mm and
1.2mm, its dielectric constant is 2.2.
Described liquid antenna 1 includes vertical section a being sequentially connected in series from the bottom to top and spiral section b, the lower end of described vertical section a
It is connected with described coaxial fitting 2.2, the upper end of described vertical section a is connected with the lower end of described spiral section b；Described vertical section a
Height hv is 17mm；In described spiral section b: spiral number of turns are 8, pitch ds is 21mm.Described vertical section a and spiral section b's is straight
Footpath is 25mm.
The screw diameter of flexible foldable regulatable liquid helical antenna of the present embodiment and the relation of radiation directivity
Refer to Fig. 3, figure upper, middle and lower side is helical antenna schematic diagram, top is corresponding radiation direction schematic diagram, wherein: d represents diameter,
λ is the wavelength of electromagnetic wave.From left to right, the ratio of the two increases.When ratio is less than 0.18, its radiation is mainly in level side
To, when ratio is between when between 0.25 and 0.46, main radianting capacity in the surface of helical antenna, when ratio is more than 0.5,
Main lobe subsides, and the Main way of radiation is oblique upper.The flexible foldable regulatable liquid helical antenna direction of the present embodiment
Figure refers to table 1 with the variation relation of diameter and the ratio of wavelength, the data that this table is provided, there is certain universality it is adaptable to
The helical antenna of the other sizes realized using saline solution design, no matter its pitch, screw diameter, spiral number of turns and operating frequency
With operation wavelength how, all meet the law of regularity described in this table, there is application value.
Table 1 flexible foldable regulatable liquid helical antenna directional diagram is with the variation relation table of diameter and the ratio of wavelength
| Radiation direction | Horizontal omnidirectional | Axially | Oblique upper circumference |
| Diameter (mm) | 25 | 25 | 25 |
| Frequency range (ghz) | <1.2 | 1.2-4.8 | >4.8 |
| Wave-length coverage (mm) | >250 | 62.5-250 | <62.5 |
| Ratio (d/ λ) | <0.1 | 0.1-0.4 | >0.4 |
| Corresponding metal antenna ratio (d/ λ) | <0.18 | 0.25-0.46 | >0.5 |
For the flexible foldable regulatable liquid helical antenna of the present embodiment, respectively three prescriptions are provided with two-dimensional coordinate
Xiang Tu, Details as Follows:
The Polar Coordinate Two-dimensional directional diagram of horizontal omnidirectional flexible foldable regulatable liquid helical antenna refers to Fig. 4, this figure
Show: more remote apart from the center of circle, illustrate that radianting capacity is stronger under this angle, four curves come from azimuth and the angle of pitch
Combination, when respectively 0 degree and 90 degree.
The Polar Coordinate Two-dimensional directional diagram of the regulatable liquid helical antenna of end-fire flexible foldable refers to Fig. 5, this
Chart is bright: more remote apart from the center of circle, illustrate that radianting capacity is stronger under this angle, four curves come from azimuth and the angle of pitch
Combination, when respectively 0 degree and 90 degree.
The flexible foldable regulatable liquid helical antenna three-dimensional figure of oblique upper radiation substantially has oblique upper spoke
The feature penetrated, centre is very weak concave point.But it is not so perfect as shown in Fig. 3, this is the actual feelings that can accomplish
Condition.In fact, the radiation shapes of so standard in Fig. 3 do not accomplished by metal spiral antenna yet.
The flexible foldable regulatable liquid helical antenna Polar Coordinate Two-dimensional directional diagram of oblique upper radiation refers to Fig. 6, this
Chart is bright: more remote apart from the center of circle, illustrate that radianting capacity is stronger under this angle, four curves come from azimuth and the angle of pitch
Combination, when respectively 0 degree and 90 degree.
In the present embodiment technical scheme, excitation and feed probes length lp are to the impedance matching property of liquid helical antenna
Impact refers to Fig. 7 and Biao 2, and what in figure was given is reflection coefficient, to show matching properties with this in antenna works.Be given respectively
Probe length 2mm, 5mm, the situation of 8mm and 12mm.From figure 7, it is seen that with the lengthening of probe, resonant frequency constantly drops
Low, substantially from 2.5ghz to 2.2,1.9 and 1.7ghz.
The impact to liquid antenna for the table 2 feed probes length
In the present embodiment technical scheme, the impact of the impedance matching property to liquid helical antenna for the micro-strip dielectric substrate thickness
Refer to Fig. 8 and Biao 3, from Fig. 8 and Biao 3, with the increase of thickness, the thickness from 0.6mm to 2.0mm, the resonance causing
Frequency reduces, substantially from 1.75ghz to 1.62ghz.
The impact to impedance matching property for the table 3 micro-strip dielectric substrate thickness
In the present embodiment, the impact of the feed impedance matching to liquid helical antenna for the section liquid radius refers to Fig. 9 and Biao 4,
According to Fig. 9 and Biao 4, with radius from 1mm to 1.5,2 and 2.5mm, resonant frequency reduce (from 2.0ghz to
1.6ghz).
Table 4 feeds the impact to coupling for the section liquid radius
| Liquid radius (mm) | 1.0 | 1.5 | 2.0 | 2.5 |
| Mid frequency (ghz) | 2.02 | 1.79 | 1.73 | 1.64 |
| Minimal reflection coefficient (db) | -21.4 | -23.5 | -17.7 | -15.8 |
| Frequency range (ghz) | 1.51-1.80 | 1.58-1.91 | 1.61-1.99 | 1.83-2.26 |
| Relative bandwidth | 17.5% | 18.9% | 21.1% | 21.0% |
For the flexible foldable regulatable liquid helical antenna of the present embodiment, using vector network analyzer to flexibility
Foldable regulatable liquid helical antenna carry out impedance matching property test it is therefore an objective to: actual test reflection coefficient, for anti-
Reflect impedance matching property.The reflection coefficient of liquid helical antenna of actual measurement and comparing of simulation result refer to Figure 10, from figure
It can be seen that both results are coincide preferably in 10, resonant frequency and bandwidth are close, and simply difference in concrete numerical value, belongs to
In theoretical with actual nominal error scope.
For the flexible foldable regulatable liquid helical antenna of the present embodiment, carry out flexible foldable in microwave dark room
Regulatable liquid helical antenna Pattern measurement, key instrument uses An Li anritsu company 37369a vector network analysis
Instrument, cooperation ultra broadband ridged horn antenna (1-12ghz) and horizontal single axle table, complete the technology such as voltage standing wave ratio, directional diagram
Index test, obtains horizontal and vertical polarised direction data respectively., as transmitting terminal, flexible foldable can for ridged horn antenna
The liquid helical antenna of regulation and control is positioned on turntable, as receiving terminal, two antenna distance 5m, and highly consistent, transmission signal is simultaneously read
Take the s parameter of arrow net.The a width of 40mhz-3.0ghz of calibration tape, refer to Figure 11 (theta is in 90 degree, phi from 0 to 360 degree) and
Figure 12 (phi is in 90 degree, and theta spends from 0 to 360), knowable to Figure 11 and Figure 12: simulation result and measured result connect very much
Closely, and under different parameters configuring condition, operating frequency of antenna is in 1.2ghz-2.6ghz scope, and relative bandwidth is more than 20%,
Big value reaches 24.1%, belongs to ultra-wideband antenna.Therefore, absolutely prove technical solution of the present invention gained flexible foldable controllable
The high-quality performance of liquid helical antenna and strong applicability.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of regulatable liquid helical antenna of flexible foldable is it is characterised in that include the liquid of helically structure setting
Antenna (1) and the feed end (2) being connected with described liquid antenna (1)；
Described liquid antenna (1) includes hollow flexible pipe (1.1) and injects the internal conducting liquid of described flexible pipe (1.1)
(1.2)；
Described feed end (2) includes micro-strip substrate (2.1) and is arranged on the coaxial fitting on described micro-strip substrate (2.1)
(2.2)；It is provided with the probe connecting with the conducting liquid (1.2) in described liquid antenna (1) in described coaxial fitting (2.2)
(2.3)；
One end of described liquid antenna (1) is connected with described coaxial fitting (2.2), and its other end is provided with for sealing described conduction
The sealing member of liquid (1.2).
2. the regulatable liquid helical antenna of flexible foldable according to claim 1 is it is characterised in that also include supporting
Pipe (3), one end of described support pipe (3) is fixed on described micro-strip substrate (2.1), and described liquid antenna (1) is helically
Rise shape to be wrapped on the outer wall of described support pipe (3).
3. the regulatable liquid helical antenna of flexible foldable according to claim 2 is it is characterised in that described holds round
The central axis upright of pipe (3) is arranged in the upper surface of described micro-strip substrate (2.1), and the upper table of described micro-strip substrate (2.1)
The central point in face is located on the central axis of described support pipe (3)；Described coaxial fitting (2.2) runs through described micro-strip substrate
(2.1) arrange, and it is close to the outer wall setting of described support pipe (3).
4. the regulatable liquid helical antenna of flexible foldable according to claim 3 is it is characterised in that described conductive liquid
Body (1.2) is sodium chloride solution, and wherein, the concentration of sodium chloride is 3.5%.
5. the regulatable liquid helical antenna of flexible foldable according to claim 3 is it is characterised in that described holds round
The internal diameter of pipe (3), external diameter and length are respectively 8mm, 10mm and 185mm；The material of described support pipe (3) is rigid plastics.
6. the regulatable liquid helical antenna of flexible foldable according to claim 5 is it is characterised in that described micro-strip base
The material of plate (2.1) is rogers rt5880, and its length and width and height are respectively 100mm, 70mm and 1.2mm, and its dielectric constant is
2.2.
7. the regulatable liquid helical antenna of flexible foldable according to claim 6 is it is characterised in that described liquid sky
Line (1) includes vertical section (a) and the spiral section (b) being sequentially connected in series from the bottom to top, and the lower end of described vertical section (a) is coaxial with described
Joint (2.2) connects, and the upper end of described vertical section (a) is connected with the lower end of described spiral section (b)；
The height of described vertical section (a) is 17mm；In described spiral section (b): spiral number of turns are 8, pitch is 21mm.
8. the regulatable liquid helical antenna of flexible foldable according to claim 7 is it is characterised in that described vertical section
A the diameter of () and spiral section (b) is 25mm.
9. the regulatable liquid helical antenna of flexible foldable according to claim 1 is it is characterised in that described sealing member
Including clip or sealing plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004737.6A CN106374185A (en) | 2016-11-15 | 2016-11-15 | Flexible, foldable and adjustable liquid spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611004737.6A CN106374185A (en) | 2016-11-15 | 2016-11-15 | Flexible, foldable and adjustable liquid spiral antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106374185A true CN106374185A (en) | 2017-02-01 |
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| CN201611004737.6A Pending CN106374185A (en) | 2016-11-15 | 2016-11-15 | Flexible, foldable and adjustable liquid spiral antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257020A (en) * | 2017-06-15 | 2017-10-17 | 中国人民解放军空军工程大学 | L audio range frequencies are adjustable micro-strip paster antenna |
| CN112366450A (en) * | 2020-10-30 | 2021-02-12 | 南京航空航天大学 | High-gain flexible liquid antenna |
| CN112821041A (en) * | 2020-12-30 | 2021-05-18 | 电子科技大学 | Frequency polarization reconfigurable monopole antenna based on liquid metal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991015621A1 (en) * | 1990-04-03 | 1991-10-17 | The Bentley-Harris Manufacturing Company | Antenna structure and method of making same |
| CN1897349A (en) * | 2005-07-11 | 2007-01-17 | 三星电机株式会社 | Antenna combining polar liquid |
| CN104300205A (en) * | 2014-08-22 | 2015-01-21 | 大连海事大学 | Liquid metal spiral antenna |
| CN206180080U (en) * | 2016-11-15 | 2017-05-17 | 中国人民解放军国防科学技术大学 | Flexible collapsible liquid helical antenna who regulates and control |
-
2016
- 2016-11-15 CN CN201611004737.6A patent/CN106374185A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991015621A1 (en) * | 1990-04-03 | 1991-10-17 | The Bentley-Harris Manufacturing Company | Antenna structure and method of making same |
| CN1897349A (en) * | 2005-07-11 | 2007-01-17 | 三星电机株式会社 | Antenna combining polar liquid |
| CN104300205A (en) * | 2014-08-22 | 2015-01-21 | 大连海事大学 | Liquid metal spiral antenna |
| CN206180080U (en) * | 2016-11-15 | 2017-05-17 | 中国人民解放军国防科学技术大学 | Flexible collapsible liquid helical antenna who regulates and control |
Non-Patent Citations (1)
| Title |
|---|
| WENJING SU ET AL.: "3D Printed Reconfigurable Helical Antenna Based on Microfluidics and Liquid Metal Alloy", 《 2016 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (APSURSI)》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107257020A (en) * | 2017-06-15 | 2017-10-17 | 中国人民解放军空军工程大学 | L audio range frequencies are adjustable micro-strip paster antenna |
| CN112366450A (en) * | 2020-10-30 | 2021-02-12 | 南京航空航天大学 | High-gain flexible liquid antenna |
| CN112366450B (en) * | 2020-10-30 | 2021-10-22 | 南京航空航天大学 | High-gain flexible liquid antenna |
| CN112821041A (en) * | 2020-12-30 | 2021-05-18 | 电子科技大学 | Frequency polarization reconfigurable monopole antenna based on liquid metal |
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