CN109244643A - One kind being based on liquid metal frequency reconfigurable slot-coupled antenna - Google Patents
One kind being based on liquid metal frequency reconfigurable slot-coupled antenna Download PDFInfo
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- CN109244643A CN109244643A CN201810976245.6A CN201810976245A CN109244643A CN 109244643 A CN109244643 A CN 109244643A CN 201810976245 A CN201810976245 A CN 201810976245A CN 109244643 A CN109244643 A CN 109244643A
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- liquid metal
- antenna
- coupled antenna
- medium substrate
- upper layer
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention belongs to antenna technical fields, disclose a kind of based on liquid metal frequency reconfigurable slot-coupled antenna, including feeding network and radiant section；Feeding network is layer dielectric substrate, and radiant section is upper layer medium substrate；The upper surface of upper layer medium substrate is printed with rectangular microband paste, and the microfluidic channel annular groove of filling liquid metal or Teflon solution is carved in inside.The present invention realizes restructural characteristic using liquid metal, can be restructural with common antenna realization compared to more traditional reconfigurable antenna, and structure is simple；Liquid metal is restructural to realize that restructural more simple and tuning range is wider compared with electronic switch；Liquid metal is braked using microfluidic channel, and compare other modes of braking, it is easy to accomplish and control；Liquid metal uses gallium-indium-tin alloy, and low cost is nontoxic；Using aperture-coupled, biggish bandwidth is realized.
Description
Technical field
The invention belongs to antenna technical fields, more particularly to one kind to be based on liquid metal frequency reconfigurable slot-coupled day
Line.
Background technique
Currently, the prior art commonly used in the trade is such that the high speed development with wireless communication system, antenna is wanted
Ask higher and higher.Compared to conventional antenna structures, reconfigurable antenna can be by load radio frequency electronics or using mechanical
Method etc. changes the structure of antenna radiator, and the resonance characteristic and radiation characteristic of antenna be greatly improved.Reconfigurable antenna
Nowadays requirement of the wireless telecommunication system to channel, rate is not only adapted to, and can also largely reduce the number of antenna
Amount and cost have very important value in practical applications.Reconfigurable antenna not only solves the problem that multiple antennas faces,
On the other hand restriction of the traditional antenna to entire communication equipment performance is solved.Traditional reconfigurable antenna is due to introducing other
Circuit, can make that structure is complicated, bring power loss.
In conclusion problem of the existing technology is: there are power consumptions for traditional reconfigurable antenna greatly, introduces other circuits
Lead to the problem of structure is complicated；At present due to liquid metal antenna narrower bandwidth both domestic and external, 5% or so, this is limitation liquid
The major issue of state metal antenna.
It solves the difficulty and meaning of above-mentioned technical problem: since the structure of current reconfigurable antenna is more complex, it is multiple to mitigate it
Polygamy is necessary, therefore introducing liquid metal structure can reduce the complexity of structure instead of traditional circuit structure.
Current liquid metal antenna narrower bandwidth, is not easy to broaden, and solves the problems, such as that narrow bandwidth is extremely important for liquid metal antenna,
It is compared with other liquid metal antennas, bandwidth of the invention improves 85% or so, is more advantageous to the restructural of frequency.
Summary of the invention
In view of the problems of the existing technology, the present invention provides one kind to be based on liquid metal frequency reconfigurable slot-coupled
Antenna.
The invention is realized in this way it is a kind of based on liquid metal frequency reconfigurable slot-coupled antenna, it is described to be based on liquid
State metal frequency reconfigurable slot-coupled antenna includes feeding network and radiant section；
Feeding network is layer dielectric substrate, and radiant section is upper layer medium substrate；
The upper surface of upper layer medium substrate is printed with rectangular microband paste, and filling liquid metal or Teflon are carved in inside
The microfluidic channel annular groove of solution.
Further, the lower surface of the layer dielectric substrate is printed with horizontal microstrip feed line, vertical microstrip feed line and open circuit
Minor matters, horizontal microstrip feed line are port1, and vertical microstrip feed line is port2, and upper surface is printed with metal floor, on metal floor
It is carved with horizontal hourglass shape gap and vertical hourglass shape gap, feeds and is separated with one layer between layer dielectric substrate and upper layer medium substrate
Air.
Further, the horizontal hourglass shape gap and vertical hourglass shape gap are hourglass shape gap, the orthogonal floor that is engraved in
On vertical center line.
Further, solution inlet and taphole are carved with inside the upper layer medium substrate.
Further, the upper layer medium substrate is dimethyl silicone polymer；The layer dielectric substrate is FR4.
Further, the liquid metal is gallium-indium-tin alloy.
Another object of the present invention is to provide liquid metal frequency reconfigurable slot-coupled day is based on described in a kind of application
The wireless communication system of line.
In conclusion advantages of the present invention and good effect are as follows: upper layer medium substrate of the invention, rectangular microband paste and
Microfluidic channel annular, the center of upper layer medium substrate upper surface is rectangular microband paste, and inside is provided with microfluidic channel
Annular groove, annular groove are centered around around square patch, by changing the solution in microfluidic channel annular groove, thus it is possible to vary antenna
Swept area, to change its radiation characteristic；Feeding network of the invention consists of three parts, layer dielectric substrate, metal
Floor and microstrip-fed line, the upper surface of layer dielectric substrate are metal floors, are between metal floor and upper layer medium substrate
Air layer opens a pair of slits on floor, and the feed line that a pair of orthogonal is placed is located at base lower surface and carries out couple feed, wherein
The feed line being disposed vertically has expanded bandwidth significantly, compared with other liquid metal antennas, has improved 85% added with open circuit minor matters
Left and right.
Solution in microfluidic channel annular groove of the invention is liquid metal or Teflon solution, by fill this two
The different solution of kind, realizes that the appearance of the restructural liquid antenna of frequency substantially improves these problems.Liquid metal is a kind of
New material not only has mobility, also has the characteristics that recoverability；Compared with traditional reconfigurable antenna, by liquid metal
It applies in reconfigurable antenna, antenna structure can be made simpler, it is only necessary to which the volume and shape for changing liquid metal are not required to
Complicated circuit structure is added, the volume of antenna can be reduced.And liquid metal flows are good, than traditional reconfigurable antenna
Tuning range is wider, more flexible.
The present invention realizes restructural characteristic using liquid metal, compared to more traditional reconfigurable antenna, can use a secondary day
Line realization is restructural, and structure is simple；
Tradition is realized restructural antenna by electronic switching device, and tuning range is very limited, and after using liquid metal,
Tuning range can carry out manual control, and range is wider；Common liquid metal has mercury, gallium-indium alloy etc. both at home and abroad, the present invention
In using gallium-indium-tin alloy, this cost of alloy is more inexpensive, and nontoxic；The present invention is coupled using hourglass shape gap
Feed, realizes biggish bandwidth, and compare other liquid metal antennas, and bandwidth increases about 85%, and be more suitable for frequency can
Reconstruct.
Detailed description of the invention
Fig. 1 is provided in an embodiment of the present invention based on liquid metal frequency reconfigurable slot-coupled antenna structural schematic diagram；
Fig. 2 is the structural schematic diagram of upper layer medium substrate and layer dielectric substrate provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of feeding network provided in an embodiment of the present invention；
Fig. 4 is radiation patch schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the microfluidic channel side view of liquid metal provided in an embodiment of the present invention；
Fig. 6 is return loss plot provided in an embodiment of the present invention；
Fig. 7 is isolation figure provided in an embodiment of the present invention；
The directional diagram of two ports when Fig. 8 is low frequency provided in an embodiment of the present invention；
The directional diagram of two ports when Fig. 9 is high frequency provided in an embodiment of the present invention；
In figure: 1, microfluidic channel annular groove；2, rectangular microband paste；3, layer dielectric substrate；4, upper layer medium substrate；
5, horizontal microstrip feed line；6, vertical microstrip feed line；7, open circuit minor matters；8, metal floor；9, horizontal hourglass shape gap；10, vertical
Hourglass shape gap；11, solution inlet；12, taphole.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
For traditional reconfigurable antenna, that there are power consumptions is big, introduces other circuits；Be not easy to brake, narrower bandwidth the problem of.
Liquid metal is new material, not only has mobility, also has the characteristics that recoverability；Liquid metal is applied restructural
In antenna, make antenna structure it is simpler, realize miniaturization, be a great development trend.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, provided in an embodiment of the present invention include: based on liquid metal frequency reconfigurable slot-coupled antenna
Include feeding network and radiant section, specifically include: microfluidic channel annular groove 1, rectangular microband paste 2, layer dielectric substrate 3,
Upper layer medium substrate 4, horizontal microstrip feed line 5, vertical microstrip feed line 6, open circuit minor matters 7, metal floor 8, horizontal hourglass shape gap
9, vertical hourglass shape gap 10, solution inlet 11, taphole 12.
Feeding network includes layer dielectric substrate 3, and the lower surface of layer dielectric substrate 3 is printed with horizontal microstrip feed line 5, hangs down
Straight microstrip feed line 6 and open circuit minor matters 7, horizontal microstrip feed line 5 is port1, and vertical microstrip feed line 6 is port2, and upper surface is printed with
Metal floor 8 is carved with horizontal hourglass shape gap 9 and vertical hourglass shape gap 10 on metal floor 8, feeds layer dielectric substrate 3
One layer of air is separated between upper layer medium substrate 4；Radiant section includes upper layer medium substrate 4, the upper table of upper layer medium substrate 4
Face is printed with rectangular microband paste 2, and microfluidic channel annular groove 1 and solution inlet 11 and taphole 12 are carved in inside.
In a preferred embodiment of the invention, upper layer medium substrate 4 is PDMS (dimethyl silicone polymer), the lower layer
Medium substrate is FR4.
In a preferred embodiment of the invention, the solution in microfluidic channel annular groove 1 is liquid metal or Teflon
Solution realizes the restructural of frequency by filling both different solution.
In a preferred embodiment of the invention, be carved with hourglass shape gap on metal floor, it is orthogonal be engraved in floor vertical
On center line.
In a preferred embodiment of the invention, liquid metal is gallium-indium-tin alloy.
The microstrip feed line of 3 lower surface of layer dielectric substrate of the embodiment of the present invention by be carved with the floor in hourglass shape gap to
Upper layer radiation patch carries out couple feed, and upper layer radiator is divided into two parts: rectangular microband paste 2 and annular microfluidic channel.
Dual-polarized realized by two orthogonally located horizontal microstrip feed lines 5,6 time-sharing exciting of vertical microstrip feed line: working as vertical end
When mouth Port1 excitation, vertical polarization is realized；When horizontal port Port2 excitation, horizontal polarization is realized.
It is restructural to be divided into two kinds of situations: when the solution filled in microfluidic channel annular groove 1 is Teflon solution, miniflow
Body port annular slot 1 is not involved in radiation, and radiator is only rectangular microband paste 2, and rectangular microband paste 2 is coupled by lower layer and presented
Electricity, outside radiation energy, for Antenna Operation in high frequency, frequency range is 3.6~3.8GHz (S11 < -14dB) at this time；Work as microfluidic channel
When the solution filled in annular groove 1 is gallium-indium-tin alloy, microfluidic channel annular groove 1 participates in radiation, and radiator is rectangular microstrip
Patch 2 and gallium-indium-tin alloy, swept area increase, they are by lower layer's couple feed, common outside radiation energy, at this time antenna
In low frequency, frequency range is 3.4~3.6GHz (S11 < -14dB) for work.To realize the frequency reconfigurable of antenna.
Simulation result such as Fig. 6-Fig. 9.
The S parameter of antenna emulation is as shown in fig. 6, be divided into two parts of high and low frequency: Port1, Port2 of low frequency can be same
When meet 3.4-3.65GHz (return loss < -10dB), Port1, Port2 class of high frequency meets 3.45-3.84GHz simultaneously and (returns
Wave loss < -10dB)；Isolation between antennas is good, as shown in fig. 7, low frequency and high-frequency isolation degree < -32dB；The radiation of antenna emulation
Directional diagram is as shown in Figure 8 and Figure 9, has symmetrical directional diagram, and directionality is good, and the gain of low frequency direction figure intersects in 8dBi or more
Polarization is greater than 32dB；The gain of high frequency direction figure is greater than 42dB in 8.1dBi or more, cross polarization.Simulation result show antenna by
Low frequency transform high frequency, realizes frequency reconfigurable.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. one kind is based on liquid metal frequency reconfigurable slot-coupled antenna, which is characterized in that described to be based on liquid metal frequency
Restructural slot-coupled antenna includes feeding network and radiant section；
Feeding network is layer dielectric substrate, and radiant section is upper layer medium substrate；
The upper surface of upper layer medium substrate is printed with rectangular microband paste, and filling liquid metal or Teflon solution are carved in inside
Microfluidic channel annular groove.
2. being based on liquid metal frequency reconfigurable slot-coupled antenna as described in claim 1, which is characterized in that the lower layer
The lower surface of medium substrate is printed with horizontal microstrip feed line, vertical microstrip feed line and open circuit minor matters, horizontal microstrip feed line
Port1, vertical microstrip feed line are port2, and upper surface is printed with metal floor, be carved on metal floor horizontal hourglass shape gap and
Vertical hourglass shape gap feeds and is separated with one layer of air between layer dielectric substrate and upper layer medium substrate.
3. being based on liquid metal frequency reconfigurable slot-coupled antenna as claimed in claim 2, which is characterized in that the level
Hourglass shape gap and vertical hourglass shape gap are hourglass shape gap, it is orthogonal be engraved in floor on vertical center line.
4. being based on liquid metal frequency reconfigurable slot-coupled antenna as described in claim 1, which is characterized in that the upper layer
Solution inlet and taphole are carved with inside medium substrate.
5. being based on liquid metal frequency reconfigurable slot-coupled antenna as described in claim 1, which is characterized in that the upper layer
Medium substrate is dimethyl silicone polymer；The layer dielectric substrate is FR4.
6. being based on liquid metal frequency reconfigurable slot-coupled antenna as described in claim 1, which is characterized in that the liquid
Metal is gallium-indium-tin alloy.
7. a kind of wireless communication system using based on liquid metal frequency reconfigurable slot-coupled antenna described in claim 1.
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| CN201810976245.6A CN109244643B (en) | 2018-08-25 | 2018-08-25 | Reconfigurable slot coupling antenna based on liquid metal frequency |
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| CN201810976245.6A CN109244643B (en) | 2018-08-25 | 2018-08-25 | Reconfigurable slot coupling antenna based on liquid metal frequency |
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| CN109244643B CN109244643B (en) | 2020-12-01 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888493A (en) * | 2019-03-11 | 2019-06-14 | 南京理工大学 | A kind of single-frequency beam scanning antennas based on liquid metal |
| CN110190385A (en) * | 2019-06-27 | 2019-08-30 | 中国科学院理化技术研究所 | A kind of antenna and communication apparatus and preparation method |
| 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 |
| CN111710985A (en) * | 2020-07-21 | 2020-09-25 | 西安电子科技大学 | Controllable polarization conversion surface based on liquid metal |
| CN111786118A (en) * | 2020-07-06 | 2020-10-16 | 电子科技大学 | Equipment common-type gap coupling antenna based on liquid crystal adjustable material |
| CN112086721A (en) * | 2020-10-28 | 2020-12-15 | 西安电子科技大学 | Broadband two-dimensional and differential phase comparison network based on multilayer microstrip slot coupling structure |
| CN112821041A (en) * | 2020-12-30 | 2021-05-18 | 电子科技大学 | Frequency polarization reconfigurable monopole antenna based on liquid metal |
| CN113054416A (en) * | 2021-04-02 | 2021-06-29 | 西安电子科技大学 | Liquid metal reconfigurable antenna feed circuit |
| CN113808877A (en) * | 2021-09-08 | 2021-12-17 | 中国科学院理化技术研究所 | Liquid metal switch and reconfigurable antenna |
| CN113972480A (en) * | 2021-10-25 | 2022-01-25 | 电子科技大学 | Liquid metal reconfigurable array antenna based on two-dimensional stretchable flexible cavity |
| WO2022017484A1 (en) * | 2020-07-24 | 2022-01-27 | 华为技术有限公司 | Antenna and electronic device |
| CN115548643A (en) * | 2021-06-30 | 2022-12-30 | 中国移动通信有限公司研究院 | Communication sensing antenna and antenna sensor system |
| CN116960609A (en) * | 2023-06-28 | 2023-10-27 | 南京邮电大学 | Frequency and polarization reconfigurable micro-fluidic antenna |
| CN117525878A (en) * | 2023-12-22 | 2024-02-06 | 南京邮电大学 | Frequency-reconfigurable microfluidic MIMO antenna |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888493B (en) * | 2019-03-11 | 2020-04-07 | 南京理工大学 | Single-frequency beam scanning antenna based on liquid metal |
| CN109888493A (en) * | 2019-03-11 | 2019-06-14 | 南京理工大学 | A kind of single-frequency beam scanning antennas based on liquid metal |
| CN110190385A (en) * | 2019-06-27 | 2019-08-30 | 中国科学院理化技术研究所 | A kind of antenna and communication apparatus and preparation method |
| CN110190385B (en) * | 2019-06-27 | 2020-08-04 | 中国科学院理化技术研究所 | Antenna, communication equipment and preparation method |
| 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 |
| 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 |
| CN111786118A (en) * | 2020-07-06 | 2020-10-16 | 电子科技大学 | Equipment common-type gap coupling antenna based on liquid crystal adjustable material |
| CN111786118B (en) * | 2020-07-06 | 2022-06-07 | 电子科技大学 | Equipment common-type gap coupling antenna based on liquid crystal adjustable material |
| CN111710985A (en) * | 2020-07-21 | 2020-09-25 | 西安电子科技大学 | Controllable polarization conversion surface based on liquid metal |
| WO2022017484A1 (en) * | 2020-07-24 | 2022-01-27 | 华为技术有限公司 | Antenna and electronic device |
| CN112086721A (en) * | 2020-10-28 | 2020-12-15 | 西安电子科技大学 | Broadband two-dimensional and differential phase comparison network based on multilayer microstrip slot coupling structure |
| CN112821041A (en) * | 2020-12-30 | 2021-05-18 | 电子科技大学 | Frequency polarization reconfigurable monopole antenna based on liquid metal |
| CN112821041B (en) * | 2020-12-30 | 2021-10-22 | 电子科技大学 | Frequency polarization reconfigurable monopole antenna based on liquid metal |
| CN113054416A (en) * | 2021-04-02 | 2021-06-29 | 西安电子科技大学 | Liquid metal reconfigurable antenna feed circuit |
| CN115548643A (en) * | 2021-06-30 | 2022-12-30 | 中国移动通信有限公司研究院 | Communication sensing antenna and antenna sensor system |
| CN113808877A (en) * | 2021-09-08 | 2021-12-17 | 中国科学院理化技术研究所 | Liquid metal switch and reconfigurable antenna |
| CN113808877B (en) * | 2021-09-08 | 2023-12-19 | 中国科学院理化技术研究所 | Liquid metal switch and reconfigurable antenna |
| CN113972480A (en) * | 2021-10-25 | 2022-01-25 | 电子科技大学 | Liquid metal reconfigurable array antenna based on two-dimensional stretchable flexible cavity |
| CN113972480B (en) * | 2021-10-25 | 2022-05-31 | 电子科技大学 | Liquid metal reconfigurable array antenna based on two-dimensional stretchable flexible cavity |
| CN116960609A (en) * | 2023-06-28 | 2023-10-27 | 南京邮电大学 | Frequency and polarization reconfigurable micro-fluidic antenna |
| CN117525878A (en) * | 2023-12-22 | 2024-02-06 | 南京邮电大学 | Frequency-reconfigurable microfluidic MIMO antenna |
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| CN109244643B (en) | 2020-12-01 |
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