A reconfigurable antenna based on ion gel, its fabrication method, its control method, and its electronic device.

Abstract

This invention discloses a reconfigurable antenna based on ion gel, its fabrication method, its control method, and an electronic device. The reconfigurable antenna includes a substrate with a feed port, a ground plane, and at least one transmission line. The ground plane and the transmission line are respectively connected to the grounding terminal and the feed terminal of the feed port. The transmission line is composed of two or more feed lines, with gaps between different feed lines on the same transmission line. Ion gel is adhered to the gaps, and the ion gel is connected to its adjacent feed line. The upper and lower surfaces of the ion gel are voltage application ports, which are connected to an external control terminal. This invention enables multi-band adjustment of the antenna and can also be applied to solve the problem of bending resistance of flexible antennas. It offers faster response, wider applicability, and greater versatility. The volume of the ion gel does not affect the overall antenna layout, resulting in higher integration and enabling antenna miniaturization and cost reduction.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, specifically to a reconfigurable antenna based on ion gel, its fabrication method, its control method, and its electronic device. Background Technology

[0002] With the rapid development of modern communication systems, antennas covering multiple frequency bands are typically required to meet the functional requirements of communication, navigation, and detection. Frequency-tunable antennas can dynamically select different operating frequency bands according to specific conditions, realizing the functions of multiple antennas and thus improving the utilization rate of onboard space in communication systems. Therefore, they have become a topic of increasing interest to the industry and scientific community.

[0003] Currently, frequency-reconfigurable antennas typically employ methods such as lumped elements, adding electromagnetic radiation structures, mechanically altering the antenna structure, and configuring multiple antenna elements to adjust the antenna's operating frequency. However, data shows that these adjustment methods (such as MEMS and varactor diodes) suffer from drawbacks including large adjustment unit size, high design complexity, high cost, slow response, and difficulties in system integration. Furthermore, they cannot meet the operational requirements of flexible electronic devices in bending conditions, thus failing to meet the demands of modern communication equipment.

[0004] Chinese invention patent CN112164866A discloses a high-isolation reconfigurable slot antenna based on S-PIN solid-state plasma and its frequency reconfiguration method. By controlling the on / off state of the S-PIN solid-state plasma to change the equivalent length of the antenna during radiation, the antenna frequency can be reconfigured. While the antenna in this patent achieves reconfigurability by changing its equivalent length, and is smaller than a standard PIN diode, it still utilizes conduction and cutoff characteristics to switch the antenna's operating frequency. Therefore, this antenna can only achieve two operating frequencies, and its inflexibility prevents its application in the frequency bending resistance design of flexible antennas. Summary of the Invention

[0005] To solve the above problems, the technical solution provided by the present invention is as follows:

[0006] A reconfigurable antenna based on ion gel includes a substrate. The substrate has a feed port, a ground plane, and at least one transmission line. The ground plane and the transmission line are respectively connected to the ground terminal and the feed terminal of the feed port. The transmission line is composed of two or more feed lines. There is a gap between different feed lines on the same transmission line. Ion gel is pasted at the position of the gap. The ion gel is connected to the adjacent feed line. The upper and lower surfaces of the ion gel are voltage application ports. The feed port and the voltage application port are respectively connected to an external control terminal.

[0007] The present invention further specifies that the ionic gel is a substance comprising at least a salt electrolyte that can be electrolyzed into ions and an organic polymer.

[0008] The present invention is further configured such that the voltage application port includes an upper voltage application port and a lower voltage application port, wherein the upper voltage application port is located at the end of the ion gel away from the substrate, and the lower voltage application port is located at the end of the ion gel close to the substrate.

[0009] The present invention is further configured such that the substrate is a rigid substrate or a flexible substrate.

[0010] The present invention is further configured such that the feed line is arranged on the front side of the substrate, the ground plane is arranged on the front or back side of the substrate, the feed line is curved or bent, and the length of each segment of the feed line on the substrate is different or the same.

[0011] The present invention is further configured such that the width of the ion gel is not less than the width of the feed line.

[0012] A method for fabricating a reconfigurable antenna based on ion gel, comprising:

[0013] A substrate is selected, and the substrate is fabricated according to the requirements of the required frequency band. The required feed port, ground plane, and transmission line are generated on the substrate. The transmission line is composed of two or more feed lines. The ground plane and the transmission line are connected to the ground terminal and feed terminal of the feed port.

[0014] An ionic gel with stretchability and adhesiveness is pasted between the feed lines, and the upper and lower end faces of the ionic gel are voltage application ports, respectively.

[0015] Both the power supply port and the voltage application port have wires leading out and connected to external control terminals, respectively.

[0016] The present invention is further configured such that the ionic gel is a gel-like substance of a specific shape formed by stirring and fully dissolving a salt electrolyte that can be electrolyzed into ions, an organic polymer, and an ionic liquid co-solvent in a dissolving liquid to form a mixture, and then placing the mixture in a mold and solidifying it by vacuum drying or light initiation.

[0017] A method for controlling a reconfigurable antenna based on ion gel, comprising: a reconfigurable antenna fabricated using the aforementioned method for fabricating an ion gel-based reconfigurable antenna, or a reconfigurable antenna fabricated using the aforementioned method for fabricating an ion gel-based reconfigurable antenna, comprising:

[0018] A reconfigurable antenna is obtained, and an adjustment voltage is applied to the voltage application port of the ion gel on the reconfigurable antenna to obtain the frequency offset control information of the reconfigurable antenna, thereby completing the reconstruction of the antenna frequency and realizing the continuous and controllable selection of the antenna frequency.

[0019] A method for controlling a reconfigurable antenna based on ion gel, comprising a reconfigurable flexible antenna prepared by the above-described method for fabricating an ion gel-based reconfigurable antenna, including:

[0020] A reconfigurable flexible antenna is obtained, the degree of bending of the reconfigurable flexible antenna is changed, the corresponding operating frequency of the flexible antenna in the bending state is recorded, and an adjustment voltage is applied to the voltage application port of the ion gel on the reconfigurable flexible antenna so that the operating frequency of the reconfigurable flexible antenna returns to the operating frequency in the initial state, thus completing the reconstruction of the antenna frequency and solving the bending effect on the operating frequency of the flexible antenna.

[0021] An electronic device comprising a reconfigurable antenna fabricated using the above-described ion gel-based reconfigurable antenna or the above-described method for fabricating an ion gel-based reconfigurable antenna.

[0022] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0023] This invention utilizes iontophoresis to connect the feed lines of a reconfigurable antenna, applying an adjustable voltage to both the upper and lower surfaces of the iontophoresis. Essentially, this creates a capacitor structure between the feed lines. When electrons move from one feed line to another, they are deflected by the capacitor structure of the iontophoresis, reducing the number of electrons flowing to the other feed line. This alters the current in the different feed lines, causing a shift in the antenna's operating frequency. It is important to emphasize that existing technologies can only switch on / off between feed lines, limiting them to specific frequency transitions. In contrast, this invention changes the magnitude of the adjustable voltage applied to the iontophoresis, altering both the intensity and quantity of electron deflection. The current change through the feed lines is continuous, enabling multi-band antenna adjustment, resulting in faster response, wider applicability, and greater versatility. Furthermore, the volume of the iontophoresis does not affect the overall antenna layout, allowing for higher integration and enabling miniaturization and cost reduction, thus possessing broad market prospects.

[0024] The reconfigurable antenna of this invention uses ion gel. Due to the stretchable and adhesive properties of ion gel, the entire antenna structure can be integrated on a flexible substrate, making the application of reconfigurable antennas more extensive. Moreover, when the operating frequency of the antenna shifts due to bending of the flexible antenna, applying appropriate adjustment voltages to the upper and lower surfaces of the ion gel can restore the flexible antenna to its original (unbent state) operating frequency, thus overcoming the impact of the change in operating frequency when the flexible antenna is bent. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a reconfigurable antenna according to an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of another reconfigurable antenna according to an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of applying an adjustable voltage to the ion gel according to an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram illustrating the reconfiguration principle of an ion gel antenna with voltage adjustment according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the reconfigurable antenna structure in Embodiment 1 of the present invention.

[0030] Figure 6 This is a return loss diagram for the reconfigurable antenna frequency reconfiguration in Embodiment 1 of the present invention.

[0031] Figure 7 This is a schematic diagram of the reconfigurable antenna structure in Embodiment 2 of the present invention.

[0032] Figure 8 This is a simulation diagram of the return loss of the reconfigurable antenna frequency reconfiguration in Embodiment 2 of the present invention. Detailed Implementation

[0033] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection, or a connection within two components; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0036] Combined with appendix Figure 1 To be continued Figure 4 The present invention provides a reconfigurable antenna based on ion gel, comprising a substrate 1, wherein a feed port 2, a ground plane 3, and at least one transmission line 4 are provided on the substrate 1. The ground plane 3 and the transmission line 4 are respectively connected to the ground terminal and the feed terminal of the feed port 2. The transmission line 4 includes at least two feed lines 5, and a notch 6 is provided between the feed lines 5 on the same transmission line 4. Ion gel 7 is attached to the notch 6 and connected to the adjacent feed line 5. The upper and lower surfaces of the ion gel 7 are voltage application ports 8. The feed port 2 and the voltage application port 8 are respectively connected to an external control terminal 9.

[0037] In the above embodiment, the transmission line 4 is fully connected by attaching the ion gel 7 to the gap 6 between the feed lines 5, thus forming a complete radiation line.

[0038] In the above embodiment, the connector of the power supply port 2 has a distinction between grounding and power supply, so the connection port includes a grounding end and a power supply end.

[0039] In the above embodiments, multiple transmission lines 4 can be provided, that is, the number of stubs can be greater than one, as shown in the appendix. Figure 1 The number of transmission lines in the middle is 1, with attachment Figure 2 The number of transmission lines is 2; the number of feeders on different transmission lines can be equal or unequal, as shown in the attached diagram. Figure 2 The two transmission lines have 4 feed lines on one transmission line and 3 feed lines on the other transmission line. That is, the number of ion gels set on different transmission lines can be equal or unequal.

[0040] In the above embodiments, the ionogels 5 on the same transmission line 4 can be connected to external control terminals 9 respectively, or the ionogels 5 on the same transmission line 4 can all be connected to external control terminals 9, as shown in the attached figure. Figure 2 One of the ion gels 5 on the transmission line 4 is connected to the external control terminal 9, and the other of the ion gels 5 on the transmission line 4 is connected to the external control terminal 9.

[0041] In the above embodiment, the power supply port 2 and the voltage application port 8 are connected to an external control terminal 9 via wires; the voltage application port 8 represents a voltage application point, which can be an actual electrode sheet or an endpoint where the wire connects to the ion gel 7. In order to better reflect the effect of the ion gel being equivalent to a capacitor after being pressurized, an electrode sheet that is adapted to the size of the upper and lower surfaces of the ion gel 7 can be provided.

[0042] In the above embodiments, the external control terminal 9 can be a processor or receive information from a processor to provide input voltage to the voltage application port 8.

[0043] In this embodiment, the ionic gel 7 is a substance comprising at least a salt electrolyte that can be electrolyzed into ions and an organic polymer.

[0044] In the above embodiments, the ion gel 7 has the following characteristics: 1. it is stretchable; 2. it is viscous; 3. it is ionicly conductive. Therefore, by applying a voltage to both ends of the ion gel 7, the number of electrons flowing from one feeder 5 to the adjacent feeder 5 can be changed, thereby changing the magnitude of the current flowing through one or more feeder segments, and thus changing the operating frequency of the reconfigurable antenna.

[0045] In this embodiment, the voltage application port 8 includes an upper voltage application port 81 and a lower voltage application port 82. The upper voltage application port 81 is located at the end of the ion gel 7 away from the substrate 1, and the lower voltage application port 82 is located at the end of the ion gel 7 close to the substrate 1.

[0046] In the above embodiment, in order to improve the effect of the voltage applied on the ion gel 7 on the current between the feed lines, the direction of the applied voltage is relative to the upper and lower surfaces of the substrate 1.

[0047] In this embodiment, the substrate 1 is a rigid substrate or a flexible substrate; due to the above three properties of the ion gel 7, the structure of this reconfigurable antenna can also be applied to flexible materials to adapt to more application scenarios.

[0048] In this embodiment, both the feed line 5 and the ground plane 3 are arranged on the front side of the substrate 1. The feed line 5 is curved or bent, and the length of each segment of the feed line 5 on the substrate 1 is different. In another embodiment, the feed line 5 is arranged on the front side of the substrate 1, and the ground plane 3 is arranged on the back side of the substrate 1.

[0049] In the above embodiments, the shape and length of the feed line 5 are designed according to the frequency band required by the antenna, and the feed line is not limited to a specific shape.

[0050] In the above embodiments, it should be emphasized that: the prior art can only realize the on / off switching of switching elements between feeders, and is limited to specific frequency switching; while in this invention, changing the magnitude of the regulating voltage applied to the ion gel will change the intensity and number of electron deflections, as shown in the attached figure. Figure 4As shown, the current change through the feeder is continuous, thus enabling multi-band antenna adjustment, resulting in faster response, wider applicability, and stronger versatility. Furthermore, the use of ionogel prevents inherent Joule heating when adjusting the antenna's operating frequency offset. Its peripheral circuitry is voltage-controlled, avoiding the use of current. The volume of the ionogel does not affect the overall antenna layout, resulting in higher integration and allowing for antenna miniaturization and cost reduction, thus possessing broad market prospects. In other words, if the multi-band adjustment to be achieved using existing technology were to be implemented, it would require more feeders and corresponding switching components. Therefore, in terms of both overall antenna size and design complexity, it would be incomparable to the reconfigurable antenna of this invention.

[0051] Example 1

[0052] Combined with appendix Figure 3 To be continued Figure 6 The present invention provides a reconfigurable antenna based on ion gel, comprising a substrate 1, wherein a feed port 2, a ground plane 3, and a transmission line 4 are provided on the substrate 1. The ground plane 3 and the transmission line 4 are respectively connected to the grounding end and the feed end of the feed port 2. The transmission line 4 includes two feed lines 5, and a notch 6 is provided between different feed lines 5 on the same transmission line 4. Ion gel 7 is attached to the notch 6 and connected to the adjacent feed line 5. The upper and lower surfaces of the ion gel 7 are voltage application ports 8, and the voltage application ports 8 are connected to an external control terminal 9.

[0053] In this embodiment, the ion gel 7 is a solid mixture with ionic conductivity. The ion gel includes at least a salt electrolyte that can be electrolyzed into ions and an organic polymer; specifically, it is the ion gel prepared as described in Example 3 below.

[0054] In this embodiment, the voltage application port includes an upper voltage application port and a lower voltage application port. The upper voltage application port is located at the end of the ionogel away from the substrate, and the lower voltage application port is located at the end of the ionogel close to the substrate.

[0055] In this embodiment, the substrate is a rigid substrate.

[0056] In this embodiment, both the feed line and the ground plane are arranged on the front side of the substrate. The feed line is bent, and the length of each segment of the feed line on the substrate is different. The width of the ion gel is not less than the width of the feed line.

[0057] As attached Figure 6As shown in the figure, the horizontal axis represents the antenna's operating frequency, and the vertical axis represents the return loss, which can be understood as the ratio of the signal power reflected back to the port after passing through the antenna circuit to the port's transmit power. By changing the regulating voltage applied to the ionogel, it can be clearly seen that the antenna's operating frequency shifts by approximately 0.1 GHz as it increases from 0 V to 5.5 V; furthermore, the antenna's operating frequency also gradually shifts as the regulating voltage increases, thus enabling multi-band selection of the antenna.

[0058] Example 2

[0059] Combined with appendix Figure 7 To be continued Figure 8 Unlike Embodiment 1, the substrate is a flexible substrate, but all other features are the same; the flexible antenna can be bent.

[0060] As attached Figure 8 As shown, the curve corresponding to 0deg is the curve of the antenna's operating frequency and return loss in a flat state; the curve corresponding to 50deg is the curve of the antenna's operating frequency and return loss in a 50° bend state. It can be seen that when the antenna is bent under force, its operating frequency shifts significantly. At this time, when a 4V adjustment voltage is applied to the ion gel, the curve corresponding to 50deg (4V) is the curve of the antenna's operating frequency and return loss in a 50° bend state with a 4V adjustment voltage applied to the ion gel. It can be seen that after bending, the antenna's resonant frequency returns to the operating frequency of the initial state.

[0061] In the above embodiments, the initial state of the antenna can be bent or unbent (flat).

[0062] The technical solution of this invention can overcome the influence of the change in the operating frequency of the flexible antenna when it is bent by applying an adjustable voltage to the ion gel, and has guiding significance for the frequency bending resistance of the flexible antenna.

[0063] Example 3

[0064] The present invention provides a method for fabricating a reconfigurable antenna based on ion gel, comprising:

[0065] A substrate is selected, and the substrate is fabricated according to the required frequency band requirements. The required feed port, ground plane, and transmission line are generated on the substrate. The transmission line includes at least two unconnected feed lines. The ground plane and the transmission line are connected to the ground terminal and feed terminal of the feed port.

[0066] An ionic gel with stretchability and adhesiveness is pasted between the feed lines, and the upper and lower end faces of the ionic gel are voltage application ports, respectively.

[0067] Both the power supply port and the voltage application port have wires leading out and connected to external control terminals, respectively.

[0068] In the above embodiments, both the transmission line and the ground plane material are Cu, which has high electrical conductivity, with a conductivity of 5.8 x 10⁻⁶. 7 The antenna structure is made of s / m and 35μm thick using traditional PCB fabrication methods, including the main processes of copper plating, patterning, solder masking, tin plating, and testing.

[0069] In this embodiment, the ionic gel is a gel-like substance of a specific shape formed by mixing an electrolyte salt that can be electrolyzed into ions, an organic polymer, and an ionic liquid co-solvent in a dissolving liquid, stirring and fully dissolving them to form a mixture, and then placing the mixture in a mold and solidifying it through vacuum drying or light initiation.

[0070] The co-solvent of the ionic liquid is acrylamide; the organic polymer is N,N'-methylenebisacrylamide, 3-acrylamidophenylboronic acid, or ethyl 2,2,2-trifluoroacrylate; the salt electrolyte material that can be electrolyzed into ions is a trifluoromethanesulfonyl compound;

[0071] The mass ratio of the acrylamide to the organic polymer is 1:0.001 to 1:0.004; the preferred mass ratio of the acrylamide to the electrolyte that can be electrolyzed into ions is 1:0.12 to 1:0.2.

[0072] In the above embodiments, the trifluoromethanesulfonyl compound is sodium bis(trifluoromethanesulfonyl)imide, zinc bis(trifluoromethanesulfonyl)imide, or potassium bis(trifluoromethanesulfonyl)imide.

[0073] In the above embodiments, the solidification method may be ultraviolet light irradiation or vacuum drying, etc.

[0074] In another embodiment, the preparation of the ion gel includes:

[0075] Solution A is formed by thoroughly stirring acrylamide, N,N'-methyleneacrylamide and bis(trifluoromethanesulfonyl)imide salt solution in a dissolving solution;

[0076] The photoinitiator was incorporated into solution A and stirred for 15-30 minutes to obtain an ionic gel solution;

[0077] The ion gel solution is transferred into a mold, and ultraviolet light is used to irradiate the ion gel solution to initiate free radical polymerization for 1-2 hours to obtain the ion gel.

[0078] The ion gel described above is only one preferred preparation option. Other ion gels can also be used in this technical solution, as long as they have the characteristics described in the examples.

[0079] Example 4

[0080] The present invention provides a method for controlling a reconfigurable antenna based on ion gel. The reconfigurable antenna is prepared using the method described in Examples 1 / 2 or Example 3, and is suitable for both rigid and flexible reconfigurable antennas. The method includes:

[0081] A reconfigurable antenna is obtained, an adjustable voltage is applied to the voltage application port of the ion gel on the reconfigurable antenna, the corresponding operating frequency of the reconfigurable antenna is recorded, the frequency offset control information of the reconfigurable antenna is obtained, and the antenna frequency is reconfigured to achieve continuous and controllable selection of the antenna frequency.

[0082] In this embodiment, the instrument may be a vector network analyzer.

[0083] Example 5

[0084] The present invention provides a method for controlling a reconfigurable antenna based on ion gel. The reconfigurable flexible antenna is prepared using the method described in Examples 1 / 2 or Example 3, and addresses the change in operating frequency of the flexible reconfigurable antenna caused by bending, including:

[0085] A reconfigurable flexible antenna is obtained, the degree of bending of the reconfigurable flexible antenna is changed, the corresponding operating frequency of the flexible antenna in the bending state is recorded, and an adjustment voltage is applied to the voltage application port of the ion gel on the reconfigurable flexible antenna. The operating frequency of the reconfigurable flexible antenna returns to the operating frequency in the initial state, thus completing the reconstruction of the antenna frequency and solving the bending effect on the operating frequency of the flexible antenna.

[0086] In this embodiment, the instrument may be a vector network analyzer.

[0087] Example 6

[0088] An electronic device comprising a reconfigurable antenna prepared by the method described in Example 1 / Example 2 or the method described in Example 3.

[0089] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A reconfigurable antenna based on ion gel, characterized in that, The device includes a substrate on which a power supply port, a ground plane, and at least one transmission line are provided. The ground plane and the transmission line are respectively connected to the grounding terminal and the power supply terminal of the power supply port. The transmission line is composed of two or more feed lines. There is a gap between different feed lines on the same transmission line. An ion gel is attached to the gap. The ion gel is connected to the feed line adjacent to it. The upper and lower surfaces of the ion gel are voltage application ports. The power supply port and the voltage application port are respectively connected to an external control terminal. The substrate is a flexible substrate; The ionic gel is a gel-like substance formed by mixing a salt electrolyte that can be electrolyzed into ions, an organic polymer, and an ionic liquid co-solvent in a dissolved liquid, and then solidifying the mixture. The co-solvent of the ionic liquid is acrylamide; the organic polymer is N,N'-methylenebisacrylamide, 3-acrylamidophenylboronic acid, or ethyl 2,2,2-trifluoroacrylate; the salt electrolyte material that can be electrolyzed into ions is a trifluoromethanesulfonyl compound; The mass ratio of the acrylamide to the organic polymer is 1:0.001 to 1:0.004; the mass ratio of the acrylamide to the electrolyte salt that can be electrolyzed into ions is 1:0.12 to 1:0.

2.

2. The reconfigurable antenna based on ion gel according to claim 1, characterized in that, The voltage application port includes an upper voltage application port and a lower voltage application port. The upper voltage application port is located at the end of the ion gel away from the substrate, and the lower voltage application port is located at the end of the ion gel close to the substrate. The width of the ion gel is not less than the width of the feed line.

3. The reconfigurable antenna based on ion gel according to claim 1, characterized in that, The feed line is arranged on the front side of the substrate, and the ground plane is arranged on the front or back side of the substrate. The feed line is curved or bent, and the length of each segment of the feed line on the substrate is different or the same.

4. A method for fabricating a reconfigurable antenna based on ion gel, characterized in that, include: A substrate is selected, and the substrate is fabricated according to the requirements of the required frequency band. The required feed port, ground plane, and transmission line are generated on the substrate. The transmission line includes at least two unconnected feed lines. The ground plane and the transmission line are respectively connected to the ground terminal and the feed terminal of the feed port. The substrate is a flexible substrate. An ionic gel with stretchability and adhesiveness is pasted between the feed lines, and the upper and lower end faces of the ionic gel are voltage application ports, respectively. Both the power supply port and the voltage application port have wires leading out and connected to external control terminals, respectively. The ionic gel is a gel-like substance formed by mixing a salt electrolyte that can be electrolyzed into ions, an organic polymer, and an ionic liquid co-solvent in a dissolved liquid, and then solidifying the mixture. The co-solvent of the ionic liquid is acrylamide; the organic polymer is N,N'-methylenebisacrylamide, 3-acrylamidophenylboronic acid, or ethyl 2,2,2-trifluoroacrylate; the salt electrolyte material that can be electrolyzed into ions is a trifluoromethanesulfonyl compound; The mass ratio of the acrylamide to the organic polymer is 1:0.001 to 1:0.004; the mass ratio of the acrylamide to the electrolyte salt that can be electrolyzed into ions is 1:0.12 to 1:0.

2.

5. The method for fabricating a reconfigurable antenna based on ion gel according to claim 4, characterized in that, The ion gel is a gel-like substance of a specific shape formed by mixing an electrolyte salt that can be electrolyzed into ions, an organic polymer, and an ionic liquid co-solvent in a liquid, stirring and fully dissolving them to form a mixture, and then placing the mixture in a mold and solidifying it through vacuum drying or light exposure.

6. A method for controlling a reconfigurable antenna based on ion gel, characterized in that, A reconfigurable antenna prepared by the method of fabricating an ion gel-based reconfigurable antenna according to any one of claims 1 to 3 or the method of fabricating an ion gel-based reconfigurable antenna according to claim 4 or 5, comprising: A reconfigurable antenna is obtained, and an adjustment voltage is applied to the voltage application port of the ion gel on the reconfigurable antenna to obtain the frequency offset control information of the reconfigurable antenna, thereby completing the reconstruction of the antenna frequency and realizing the continuous and controllable selection of the antenna frequency.

7. A method for controlling a reconfigurable antenna based on ion gel, characterized in that, A reconfigurable antenna prepared by the method of fabricating an ion gel-based reconfigurable antenna according to any one of claims 1 to 3 or the method of fabricating an ion gel-based reconfigurable antenna according to claim 4 or 5, comprising: A reconfigurable antenna is obtained, the degree of bending of the reconfigurable antenna is changed, the corresponding operating frequency of the antenna in the bending state is recorded, and an adjustment voltage is applied to the voltage application port of the ion gel on the reconfigurable antenna so that the operating frequency of the reconfigurable antenna returns to the operating frequency in the initial state, thus completing the reconstruction of the antenna frequency and solving the bending effect on the antenna operating frequency. The reconfigurable antenna is a reconfigurable flexible antenna.

8. An electronic device, characterized in that, A reconfigurable antenna prepared by the method of preparing an ion gel-based reconfigurable antenna according to any one of claims 1 to 3 or the method of preparing an ion gel-based reconfigurable antenna according to claim 4 or 5.

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