CN107464982B - Reconfigurable antenna based on liquid metal - Google Patents
Reconfigurable antenna based on liquid metal Download PDFInfo
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- CN107464982B CN107464982B CN201710524445.3A CN201710524445A CN107464982B CN 107464982 B CN107464982 B CN 107464982B CN 201710524445 A CN201710524445 A CN 201710524445A CN 107464982 B CN107464982 B CN 107464982B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
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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
Abstract
The invention provides a reconfigurable antenna based on liquid metal, which comprises an antenna body, a driving pump and a control unit, wherein the driving pump is connected with the antenna body; the bottom of the antenna body is provided with a liquid metal input port and a liquid metal output port, the first end of the driving pump is connected with the liquid metal input port through a liquid metal input pipe, the second end of the driving pump is connected with the liquid metal output port, the antenna body, the liquid metal input pipe and the liquid metal output pipe are filled with liquid metal, and one end of the antenna body close to the liquid metal input port or one end of the liquid metal input pipe close to the liquid metal input port is provided with a feed electrode and is in contact with the liquid metal; the control unit is electrically connected with the driving pump. The invention adjusts the liquid metal capacity in the antenna body by controlling the operation of the driving pump, realizes reconstruction and enables the same antenna to have multiple functions. Meanwhile, liquid metal is used as a heat dissipation working medium, an independent cooling circulation system does not need to be additionally arranged, the heat dissipation effect is good, the hardware cost of a communication system is saved, and the flexibility of the system is improved.
Description
Technical Field
The invention relates to the technical field of antenna devices, in particular to a reconfigurable antenna based on liquid metal.
Background
At present, antennas are ubiquitous from smart phones and automobiles to satellite communication and military radars, and our lives and works are flooded in all directions. An antenna serves as a converter for converting a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, or vice versa, and thus serves as a part for transmitting or receiving an electromagnetic wave in a radio apparatus. The application fields of the antenna also include engineering systems such as radio communication, broadcasting, television, radar, navigation, electronic countermeasure, remote sensing, radio astronomy and the like. In general, all that utilizes electromagnetic waves to transmit information relies on antennas to operate. In addition, in transferring energy with electromagnetic waves, non-signal energy radiation also requires antennas.
With the rapid development of modern radars and communication systems, the number and types of antennas required by airplanes, ships, satellites and the like are increasing for the purposes of communication, navigation, guidance, warning, weapon seeking and the like. This results in an increasing weight being loaded on the platform and the cost required to build the antenna is rising, making the cost of an antenna for a single function difficult to control. Meanwhile, the high-power antenna has huge heat productivity, and the normal work of the antenna is seriously influenced. There are many disadvantages that are inevitable with the conventional heat dissipation technology applied to the antenna. The natural air cooling has limited heat dissipation effect and can only be applied to occasions with low heat dissipation requirements. Both forced air cooling and forced water cooling require separate cooling circulation systems, and the structural complexity is self-evident, and the requirement of increasingly severe compactness in the field of antennas is difficult to adapt.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a reconfigurable antenna based on liquid metal, which can realize reconfiguration of the antenna, further has multiple functions, simultaneously does not need to add a separate cooling circulation system, has good heat dissipation effect, saves the hardware cost of a communication system and improves the flexibility of the system.
(II) technical scheme
In order to solve the technical problem, the invention provides a reconfigurable antenna based on liquid metal, which comprises an antenna body, a driving pump and a control unit; the antenna comprises an antenna body, a liquid metal input port, a liquid metal output port, a liquid metal input pipe, a liquid metal output pipe, a liquid metal feed electrode and a feed electrode, wherein the bottom of the antenna body is provided with the liquid metal input port and the liquid metal output port, the first end of a driving pump is connected with the liquid metal input port through the liquid metal input pipe, the second end of the driving pump is connected with the liquid metal output port through the liquid metal output pipe, the antenna body, the liquid metal input pipe and the liquid metal output pipe are filled with liquid metal, the antenna body is close to one end of the liquid metal input port, or one end of the liquid metal input pipe close to; the control unit is electrically connected with the driving pump and used for controlling the operation of the driving pump, adjusting the capacity of the liquid metal in the antenna body and realizing reconstruction.
The antenna body comprises a liquid metal inflow pipe and a liquid metal return pipe, an upper end port of the liquid metal inflow pipe is communicated with an upper end port of the liquid metal return pipe, a lower end port of the liquid metal inflow pipe is connected with a first end of the driving pump through the liquid metal input pipe, and a lower end port of the liquid metal return pipe is connected with a second end of the driving pump through the liquid metal output pipe.
The liquid metal inflow pipe and the liquid metal return pipe are of a double-pipe parallel structure or an inner and outer sleeve structure.
The antenna body further comprises a substrate, a stud and a top plate, the stud is arranged on the substrate, the top plate is arranged at the upper end of the stud and is in threaded connection with the stud, the top plate can move up and down along the stud, and the liquid metal inflow pipe and the liquid metal return pipe are spirally arranged on the stud between the top plate and the substrate.
The antenna body is a sleeve, the liquid metal input port and the liquid metal output port are arranged on the bottom surface of the sleeve, the radius of the liquid metal output port is smaller than that of the liquid metal input port, and a partition plate capable of sliding up and down along the sleeve is arranged in the sleeve.
The antenna comprises an antenna body, wherein a first temperature sensor is arranged on the antenna body and used for measuring the temperature of liquid metal in the antenna body, and the first temperature sensor is connected with a control unit.
Wherein, the liquid metal output pipe is provided with a radiator.
The radiator is provided with a second temperature sensor for measuring the temperature of the liquid metal in the radiator, and the second temperature sensor is connected with the control unit.
The liquid metal output pipe is provided with an electric isolation device, the electric isolation device comprises a liquid tank and a funnel arranged in the liquid tank, the bottom of the liquid tank is provided with an outlet connected with the driving pump, and the upper opening of the funnel is connected with the liquid metal output port.
The liquid metal output pipe is provided with an electric isolation device, the electric isolation device comprises a first liquid metal pool and a second liquid metal pool, the first liquid metal pool is connected with the driving pump, and the second liquid metal pool is connected with the liquid metal output port.
(III) advantageous effects
Compared with the prior art, the invention has the following advantages:
1) the invention provides a reconfigurable antenna based on liquid metal, wherein a liquid metal input port and a liquid metal output port are arranged at the bottom of an antenna body, a first end of a driving pump is connected with the liquid metal input port, a second end of the driving pump is connected with the liquid metal output port, liquid metal is filled in the antenna body, a liquid metal input pipe and the liquid metal output pipe, the operation of the driving pump is controlled by a control unit, the capacity of the liquid metal in the antenna body is adjusted, reconfiguration is realized, the same antenna has multiple functions, the number and the types of required antennas are reduced, the hardware cost of a communication system is saved, and the flexibility of the system is improved.
2) According to the invention, the liquid metal is used as a heat dissipation working medium, the liquid metal has excellent heat transfer performance, and the liquid metal can work in a circulating manner in the antenna through the circulating power provided by the driving pump; the liquid metal is high and absorbs the heat production fast in the antenna body to utilize its mobility to take the heat out of the antenna body, the radiating effect is good. Meanwhile, a separate cooling circulation system is not required to be added, the space and the cost are saved, the structure of the communication system is simplified,
drawings
Fig. 1 is a schematic structural diagram of a reconfigurable antenna based on liquid metal according to the present invention;
fig. 2 is a schematic structural diagram of an antenna body in embodiment 3 of the present invention;
fig. 3 is a schematic structural diagram of an antenna body according to embodiment 3 of the present invention;
FIG. 4 is a schematic diagram showing a parallel structure of a liquid metal return pipe and a liquid metal inflow pipe according to embodiment 3 of the present invention;
FIG. 5 is a schematic structural view of the inner and outer sleeves of the liquid metal inflow pipe and the liquid metal return pipe in embodiment 3 of the present invention;
fig. 6 is a schematic structural diagram of a heat sink in embodiment 3 of the present invention;
fig. 7 is a schematic structural diagram of an antenna body according to embodiment 4 of the present invention;
fig. 8 is a schematic structural diagram of an antenna body according to embodiment 5 of the present invention;
fig. 9 is a schematic structural view of an electrical isolation device according to embodiment 6 of the present invention;
fig. 10 is a schematic structural diagram of a reconfigurable antenna based on liquid metal in embodiment 7 of the present invention;
fig. 11 is a schematic structural diagram of a reconfigurable antenna based on liquid metal in embodiment 7 of the present invention;
description of the reference numerals
1-an antenna body; 1.1-a substrate; 1.2-liquid metal input port; 1.3-liquid metal outlet; 1.4-liquid metal inflow pipe; 1.5-liquid metal return pipe; 1.6-connecting the elbow; 1.7-sleeve; 2-liquid metal; 3-liquid metal input pipe; 4-liquid metal output pipe; 5-a feeding electrode; 6-driving the pump; 7-connecting a pipeline; 8-a radiator; 8.1-heat sink, 8.2-fin, 8.3-thermal interface material layer; 9-an electrical isolation device; 9.1-funnel; 9.2-liquid bath; 9.3-inlet; 9.4-outlet; 10-a first temperature sensor; 11-a second temperature sensor; 12-a control unit; 13.1-a first liquid metal bath; 13.2-a second liquid metal bath; 14.1-sleeve; 14.2-a separator; 14.3-push rod; 14.4-handle; 15.1-liquid metal inflow pipe; 15.2-liquid metal return pipe; 15.3-nut; 15.4-stud; 15.5-top plate; 15.6-stop collar.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in fig. 1, the reconfigurable antenna based on liquid metal provided in this embodiment includes an antenna body 1, a driving pump 6, and a control unit 12.
The bottom of the antenna body 1 is provided with a liquid metal input port 1.2 and a liquid metal output port 1.3. The first end of the driving pump 6 is connected with the liquid metal input port 1.2 through the liquid metal input pipe 3, and the second end of the driving pump 6 is connected with the liquid metal output port 1.3 through the liquid metal output pipe 4.
The antenna body 1, the liquid metal input pipe 3 and the liquid metal output pipe 4 are filled with liquid metal 2. And one end of the liquid metal input pipe 3 close to the liquid metal input port 1.2 is provided with a feed electrode 5, and the feed electrode 5 is contacted with the liquid metal 2 in the pipeline.
The control unit 12 is electrically connected to the driving pump 6, and is configured to control the operation of the driving pump 6, and adjust the volume of the liquid metal 2 in the antenna body 1 to achieve reconfiguration. And the liquid metal 2 flows out of the antenna body 1 through the liquid metal output pipe 4 and brings the heat with work done accumulation to the outside of the antenna body 1, so as to finish heat dissipation, and then the liquid metal is brought into the liquid metal input pipe 3 by the driving pump 6 to start the next cycle.
Furthermore, the liquid metal output pipe 4 in this embodiment is further provided with a heat sink 8 and an electrical isolation device 9. Specifically, the liquid metal output pipe 4 is connected with the liquid metal output port 1.3 and the electrical isolation device 9, and the connecting pipe 7 is sequentially connected with the electrical isolation device 9, the radiator 8 and the second end of the driving pump 6. The heat sink 8 in this embodiment is a blade heat sink. As shown in FIG. 1, a plurality of fins are inserted into the liquid metal output pipe 4, so that the heat dissipation area is large and the effect is excellent.
This is described in further detail below by way of a specific reconstruction process.
The liquid metal 2 flows into the antenna body 1 from the radiator 8 through the connecting pipe 7 and the liquid metal inlet pipe 3 by the action of the driving pump 6. The hollow part in the antenna body 1 forms a complete antenna after being filled with the liquid metal 2, and plays a role of receiving or emitting electromagnetic waves under the action of the feed electrode 5, and generates heat. When the power is high, the temperature rises sharply, the liquid metal 2 flows out of the antenna body 1 through the liquid metal output pipe 4, and heat accumulated by applying work is brought to the outside of the antenna body 1. After passing through the liquid metal output pipe 4 and the electrical isolation device 9, the liquid metal 2 enters the radiator 8 through the connecting pipeline 7, exchanges heat with the environment in the radiator 8, and reduces the temperature. The liquid metal 2 is brought again into the liquid metal feed pipe 3 by the drive pump 6 after the temperature has dropped, and the next cycle is started.
Further, in this embodiment, the liquid metal input pipe 3, the liquid metal output pipe 4, and the connecting pipe 7 are made of rigid materials, and flexible materials may be used when flexible movement or deformation is required.
The embodiment provides a reconfigurable antenna based on liquid metal, which controls the opening and closing of a driving pump or adjusts the power of the driving pump through a control unit, adjusts the capacity of the liquid metal in an antenna body, realizes reconfiguration, enables the same antenna to have multiple functions, reduces the number and types of required antennas, saves the hardware cost of a communication system, and improves the flexibility of the system; through liquid metal as the working medium that dispels the heat, the circulation power that the actuating pump provided makes liquid metal cycle work in the antenna, and liquid metal height absorbs the heat production fast in the antenna body to utilize its mobility to take the heat out of antenna body, the radiating effect is good. Meanwhile, a separate cooling circulation system is not required to be additionally arranged, so that the space and the cost are saved, and the structure of a communication system is simplified; the heat dissipation effect is increased by arranging the radiator; the pipeline is protected from short circuit by arranging an electric isolating device.
Example 2:
this embodiment is substantially the same as embodiment 1, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 1 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 1, the antenna body 1 is provided with a first temperature sensor 10, and the heat sink 8 is provided with a second temperature sensor 11. The first temperature sensor 10 and the second temperature sensor 11 are both connected to a control unit 12.
In this embodiment, the first temperature sensor 10 feeds back the temperature of the liquid metal 2 in the antenna body 1 to the control unit 12. The second temperature sensor 11 feeds back the temperature of the liquid metal 2 in the heat sink 8 to the control unit 12. The control unit 12 sends an instruction to the driving pump 6 according to the feedback information, controls the on/off or adjusts the power of the driving pump, and adjusts the temperature of the antenna body 1 to a proper range, thereby realizing closed-loop control.
Example 3:
this embodiment is substantially the same as embodiment 1, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 1 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 2, the antenna body 1 includes a liquid metal inflow pipe 1.4 and a liquid metal return pipe 1.5. Further, in this embodiment, the antenna body further includes a substrate 1.1. Two through holes (a liquid metal input port 1.2 and a liquid metal output port 1.3) are arranged on the substrate 1.1 side by side. The lower end port of the liquid metal inflow pipe 1.4 is connected with the liquid metal input pipe 3 through a liquid metal output port 1.3; the lower end port of the liquid metal backflow pipe 1.5 is connected with the liquid metal output pipe 4 through the liquid metal output port 1.3, and the upper end port of the liquid metal inflow pipe 1.4 is connected with the upper end port of the liquid metal backflow pipe 1.5 through the connecting bent pipe 1.6. The liquid metal input pipe 3 is connected with a first end of a driving pump 6, and the liquid metal output pipe 4 is connected with an electric isolation device 9.
Furthermore, a sleeve 1.7 is arranged outside the liquid metal inflow pipe 1.4 and the liquid metal return pipe 1.5 to protect the antenna body 1.
As shown in fig. 2 and 3, the antenna body 1 may be a straight line structure or a broken line structure; further, the antenna body 1 may also be an arc-shaped structure.
As shown in fig. 4 and 5, the liquid metal inflow pipe 1.4 and the liquid metal return pipe 1.5 are of a double-pipe parallel structure or an inner and outer sleeve structure.
As shown in fig. 6, the heat sink 8 in the present embodiment includes: heatsink 8.1 and fin 8.2. The fin 8.2 is arranged on the heat sink 8.1, the connecting pipeline 7 is embedded into the heat sink 8.1, and a thermal interface material 8.3 with high thermal conductivity is filled at the contact position of the pipeline 7 and the heat sink 8.1, so that gaps are reduced, and heat dissipation is enhanced. The contact area of the heat sink 8.1 and the pipeline 7 is increased, heat is more uniformly distributed to the heat sink 8.1, and the fins 8.2 are utilized to quickly dissipate heat.
Example 4:
this embodiment is substantially the same as embodiment 3, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 3 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 7, the antenna body further includes a substrate 1.1, a stud 15.4 and a top plate 15.5, the stud 15.4 is disposed on the substrate 1.1, the top plate 15.5 is disposed at the upper end of the stud 15.4 and is in threaded connection with the stud 15.4, the top plate 15.5 can move up and down along the stud 15.4, and the liquid metal inflow pipe 15.1 and the liquid metal return pipe 15.2 are spirally disposed on the stud 15.4 between the top plate 15.5 and the substrate 1.1.
The liquid metal 2 enters the liquid metal inflow pipe 15.1 through the liquid metal input port 1.2, the top of the liquid metal inflow pipe 15.1 is connected with the liquid metal return pipe 15.2 through the connecting bent pipe 1.6, and the liquid metal 2 flows out of the antenna body from the liquid metal 2 output port 1.3 through the liquid metal return pipe 15.2. The nut 15.3 is screwed by a spanner, so that the nut 15.3 pushes the top plate 15.5 downwards along the stud 15.4, the top plate 15.5 pushes the liquid metal inflow pipe 1.4 and the liquid metal return pipe 1.5 to be compressed, the pitch is reduced, and the antenna body 1 is reconstructed; and vice versa.
Further, in the present embodiment, the bottom surface of the top plate 15.5 is provided with a limiting ring 15.6 to prevent the liquid metal inflow pipe 1.4 and the liquid metal return pipe 1.5 from shifting left and right.
Example 5:
this embodiment is substantially the same as embodiment 1, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 1 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 8, the antenna body 1 is a sleeve 14.1, the liquid metal input port 1.2 and the liquid metal output port 1.3 are disposed on the bottom surface of the sleeve 14.1, the radius of the liquid metal output port 1.3 is smaller than that of the liquid metal input port 1.2, and a partition 14.2 capable of sliding up and down along the sleeve 14.1 is disposed in the sleeve 14.1. Furthermore, a push rod 14.3 is arranged on the partition plate 14.2, and a handle 14.4 is arranged at the upper end of the push rod 14.3.
The push rod 14.3 is first placed at the bottom of the sleeve 14.1 and the pump 6 is driven to pump the liquid metal 2 into the sleeve 14.1 and out of the liquid metal outlet 1.3, forming a flow circuit. Because the radius of the liquid metal output port 1.3 is smaller than that of the liquid metal input port 1.2, the redundant liquid metal 2 jacks up the partition plate 14.2, after the liquid level reaches the designated height, the push rod 14.3 is fixed, namely the partition plate 14.2 is fixed, and then the liquid metal 2 flowing into the antenna body 1 is dynamically balanced. The handle 14.4 is convenient for being held by a human hand or a clamp.
Further, the sleeve 14.1 and the partition 14.2 are made of corrosion-resistant rigid materials, such as alumina ceramics.
In this embodiment, the length of the antenna is controlled by pushing the partition plate by changing the volume of the liquid metal in the sleeve, so as to realize reconfiguration.
Example 6:
this embodiment is substantially the same as embodiment 1, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 1 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 9, the electric isolation device 9 adopts a funnel design, and comprises a liquid tank 9.2 and a funnel 9.1 arranged in the liquid tank 9.2, an outlet 9.4 connected with the driving pump 6 is arranged at the bottom of the liquid tank 9.2, and the upper opening of the funnel 9.1 is connected with the liquid metal output port 1.3. In this embodiment, an inlet 9.3 is formed in the side wall of the liquid tank 9.2 located at the upper part of the funnel, and the inlet 9.3 is connected with the liquid metal outlet 1.3.
Furthermore, the outlet 9.4 is lower than the bottom surface of the liquid tank 9.2, so that liquid can be discharged conveniently.
In the embodiment, the funnel changes the liquid metal in the pipeline from continuous to discrete, and one liquid drop is not contacted, so that the electric isolation is realized, the pipeline is protected from short circuit, and the infinite resistance of the funnel is equivalent to a capacitor.
Example 7:
this embodiment is substantially the same as embodiment 6, and for the sake of brevity of description, in the description process of this embodiment, the same technical features as embodiment 6 are not described again, and only differences between this embodiment and embodiment 1 are explained:
as shown in fig. 10, the galvanic separating device 9 comprises a first liquid metal bath 13.1 and a second liquid metal bath 13.2, the first liquid metal bath 13.1 being connected to the drive pump and the second liquid metal bath 13.2 being connected to the heat sink 8.
In this embodiment, the first liquid metal pool 13.1 and the second liquid metal pool 13.2 are used to replace the electrical isolation device 9 in embodiment 6, so that the structure is simpler and the production is more convenient.
Further, the drive pump 6 is a bidirectional pump. Because the volumes of the first liquid metal pool 13.1 and the second liquid metal pool 13.2 are limited, after the liquid metal in the first liquid metal pool 13.1 reaches a certain limit height, the driving pump 6 needs to be operated reversely, and the second liquid metal pool 13.2 provides the liquid metal for the antenna body 1.
As shown in fig. 11, in order to further simplify the structure, the heat sink 8 is removed in this embodiment, and fins 13.3 are directly added on the peripheries of the first liquid metal pool 13.1 and the second liquid metal pool 13.2, so that the effect of enhancing heat dissipation can be achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A reconfigurable antenna based on liquid metal is characterized by comprising an antenna body, a driving pump and a control unit; the antenna comprises an antenna body, a liquid metal input port, a liquid metal output port, a liquid metal input pipe, a liquid metal output pipe, a liquid metal feed electrode and a feed electrode, wherein the bottom of the antenna body is provided with the liquid metal input port and the liquid metal output port, the first end of a driving pump is connected with the liquid metal input port through the liquid metal input pipe, the second end of the driving pump is connected with the liquid metal output port through the liquid metal output pipe, the antenna body, the liquid metal input pipe and the liquid metal output pipe are filled with liquid metal, the antenna body is close to one end of the liquid metal input port, or one end of the liquid metal input pipe close to;
the control unit is electrically connected with the driving pump and is used for controlling the operation of the driving pump, adjusting the capacity of liquid metal in the antenna body and realizing reconstruction;
the antenna body comprises a liquid metal inflow pipe and a liquid metal return pipe, an upper end port of the liquid metal inflow pipe is communicated with an upper end port of the liquid metal return pipe, a lower end port of the liquid metal inflow pipe is connected with a first end of the driving pump through the liquid metal input pipe, and a lower end port of the liquid metal return pipe is connected with a second end of the driving pump through the liquid metal output pipe.
2. The reconfigurable antenna of claim 1, wherein the liquid metal inflow pipe and the liquid metal return pipe are of a dual pipe parallel structure or an inner and outer sleeve structure.
3. The reconfigurable antenna according to claim 2, wherein the antenna body further comprises a base plate, studs and a top plate, the studs are arranged on the base plate, the top plate is arranged at the upper ends of the studs and is in threaded connection with the studs, the top plate can move up and down along the studs, and the liquid metal inflow pipe and the liquid metal return pipe are spirally arranged on the studs between the top plate and the base plate.
4. The reconfigurable antenna of claim 1, wherein the antenna body is a sleeve, the liquid metal input port and the liquid metal output port are disposed on a bottom surface of the sleeve, and a radius of the liquid metal output port is smaller than a radius of the liquid metal input port, and a partition plate capable of sliding up and down along the sleeve is disposed in the sleeve.
5. The reconfigurable antenna according to claim 1, wherein a first temperature sensor is disposed on the antenna body and used for measuring the temperature of the liquid metal in the antenna body, and the first temperature sensor is connected to the control unit.
6. The reconfigurable antenna of any one of claims 1-5, wherein a heat sink is provided on the liquid metal output tube.
7. The reconfigurable antenna of claim 6, wherein a second temperature sensor is disposed on the heat sink for measuring a temperature of the liquid metal in the heat sink, and the second temperature sensor is connected to the control unit.
8. The reconfigurable antenna according to any one of claims 1 to 5, wherein the liquid metal output pipe is provided with an electrical isolation device, the electrical isolation device comprises a liquid tank and a funnel arranged in the liquid tank, the bottom of the liquid tank is provided with an outlet connected with the driving pump, and the upper opening of the funnel is connected with the liquid metal output port.
9. The reconfigurable antenna of any one of claims 1 to 5, wherein the liquid metal output tube is provided with an electrical isolation device, the electrical isolation device comprising a first liquid metal pool and a second liquid metal pool, the first liquid metal pool being connected to the drive pump, the second liquid metal pool being connected to the liquid metal output port.
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| CN201710524445.3A CN107464982B (en) | 2017-06-30 | 2017-06-30 | Reconfigurable antenna based on liquid metal |
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| CN201710524445.3A CN107464982B (en) | 2017-06-30 | 2017-06-30 | Reconfigurable antenna based on liquid metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110828980B (en) * | 2018-08-09 | 2021-10-29 | 中国科学院理化技术研究所 | Liquid metal reconfigurable antenna and reconfiguration method thereof |
| CN109244649B (en) * | 2018-09-21 | 2023-10-13 | 中国科学院理化技术研究所 | reconfigurable antenna |
| CN109244648B (en) * | 2018-09-21 | 2023-11-07 | 中国科学院理化技术研究所 | Reconfigurable antenna and microstrip antenna |
| CN109288488A (en) * | 2018-09-21 | 2019-02-01 | 中国科学院理化技术研究所 | Capsule antenna and capsule endoscope robot |
| CN109411899B (en) * | 2018-11-19 | 2021-05-04 | 南京邮电大学 | Liquid metal wave absorber based on gravity field regulation and control |
| CN111509394B (en) * | 2020-03-23 | 2021-01-19 | 西安电子科技大学 | Liquid metal-based frequency selection device with reconfigurable heat dissipation frequency |
| CN112444325B (en) * | 2020-11-16 | 2021-10-15 | 珠海格力电器股份有限公司 | Body temperature monitoring method and device, electronic equipment and storage medium |
| CN112928471B (en) * | 2021-01-21 | 2024-02-27 | 维沃移动通信有限公司 | Electronic equipment and antenna switching method |
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| CN106654503A (en) * | 2016-12-05 | 2017-05-10 | 云南科威液态金属谷研发有限公司 | Liquid metal-based air-control deformable antenna |
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| GB2435720B (en) * | 2006-03-03 | 2009-11-04 | Samsung Electro Mech | Frequency tunable liquid antenna |
| CN103367880A (en) * | 2013-07-05 | 2013-10-23 | 华中科技大学 | Frequency-adjustable stretchable liquid metal antenna and manufacture method thereof |
| CN106654503A (en) * | 2016-12-05 | 2017-05-10 | 云南科威液态金属谷研发有限公司 | Liquid metal-based air-control deformable antenna |
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