Antenna tuning method, micropump, device and related equipment

Abstract

The application provides an antenna regulation method, a micro pump, a device and related equipment, wherein the method comprises: obtaining first information under a current state of an antenna, the first information comprising at least one of a current return loss curve of the antenna and a current electrical length of the antenna; comparing the first information with reference information to obtain a comparison result; and regulating the electrical length of the antenna by the micro pump according to the comparison result. In this way, by comparing the first information under the current state of the antenna with reference information corresponding to target information, and regulating the electrical length of the antenna by the micro pump according to the comparison result, the terminal can realize multi-band coverage without placing multiple antennas, i.e. the internal space of the terminal device, which is already crowded, will not become more crowded due to the placement of multiple antennas of different frequency bands in the terminal, so that coupling between the antennas is avoided, thereby improving the communication performance of the terminal device.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to an antenna control method, a micropump, a device, and related equipment. Background Technology

[0002] With the development of terminal devices, the frequency range that the antennas in these devices need to cover is becoming increasingly wider. To achieve multi-band coverage, terminal devices typically need to place multiple antennas of different frequency bands within the device. This makes the already cramped internal space of the terminal device even more congested, causing coupling between antennas and reducing the communication performance of the terminal device. Summary of the Invention

[0003] This application provides an antenna control method, micro-pump, device, and related equipment, which solves the problem that terminal devices need to place multiple antennas to achieve multi-band coverage, thus reducing the communication performance of the terminal devices.

[0004] To achieve the above objectives, in a first aspect, embodiments of this application provide an antenna control method, comprising:

[0005] Obtain first information about the current state of the antenna, the first information including at least one of the current return loss curve of the antenna and the current electrical length of the antenna, wherein the antenna is a liquid metal antenna;

[0006] The first information is compared with the reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and the target frequency of the antenna.

[0007] Based on the comparison results, the electrical length of the antenna is adjusted by a micro-pump.

[0008] Secondly, embodiments of this application provide a micropump, including a drive unit, a housing, a first piston, and a second piston;

[0009] The housing has a cavity, and the housing also has a first channel and a second channel. The driving member is connected to the first piston and the second piston respectively. The first piston is located in the cavity. When the first piston moves, the pressure inside the cavity changes. The second piston has a first through hole and a second through hole. One end of the first channel and the second channel abuts against the second piston.

[0010] When the second piston is in the initial position and the driving member drives the first piston to the first position, the first channel communicates with the cavity through the first through hole, and the liquid metal in the storage tank enters the cavity through the first channel, or the liquid metal in the cavity enters the storage tank through the first channel.

[0011] When the first piston is in the initial position and the driving member drives the second piston to the second position, the second channel communicates with the cavity through the second through hole, and the liquid metal in the cavity enters the antenna through the second channel, or the liquid metal of the antenna enters the cavity through the second channel.

[0012] Thirdly, embodiments of this application provide an antenna control device, comprising:

[0013] The acquisition module is used to acquire first information about the current state of the antenna, the first information including at least one of the current return loss curve of the antenna and the current electrical length of the antenna, wherein the antenna is a liquid metal antenna;

[0014] A comparison module is used to compare the first information with reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and target frequency of the antenna.

[0015] The control module is used to adjust the electrical length of the antenna by means of a micro-pump based on the comparison result.

[0016] Fourthly, embodiments of this application provide an electronic device, including: a memory, a processor, and a program stored in the memory and executable on the processor; the processor is configured to read the program in the memory to implement the steps in the antenna control method as described in the first aspect.

[0017] Fifthly, embodiments of this application provide a readable storage medium for storing a program that, when executed by a processor, implements the steps of the antenna control method as described in the first aspect.

[0018] In this embodiment, firstly, first information about the current state of the antenna is obtained. This first information includes at least one of the antenna's current return loss curve and its current electrical length. Then, the first information is compared with reference information to obtain a comparison result. The reference information includes at least one of the first return loss curve and the first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information, and the first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the antenna's target frequency band and target frequency. Finally, based on the comparison result, the electrical length of the antenna is adjusted using a micro-pump. In this way, by comparing the first information about the current state of the antenna with the reference information corresponding to the target information, and adjusting the electrical length of the antenna using a micro-pump based on the comparison result, the terminal can achieve multi-band coverage without the need for multiple antennas. This avoids the situation where placing multiple antennas of different frequency bands in the terminal further congests the already crowded internal space of the terminal device, leading to coupling between antennas, thereby improving the communication performance of the terminal device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings are described below. Obviously, the following drawings are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the listed drawings without creative effort.

[0020] Figure 1 This is a structural diagram of a system to which the antenna control method provided in this application embodiment can be applied;

[0021] Figure 2 This is one of the flowcharts of the antenna control method provided in the embodiments of this application;

[0022] Figure 3 This is the second flowchart of the antenna control method provided in the embodiments of this application;

[0023] Figure 4 This is one of the structural schematic diagrams of the micropump provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the first piston in the micropump provided in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the second piston in the micropump provided in the embodiments of this application;

[0026] Figure 7 This is a second schematic diagram of the micropump provided in the embodiments of this application;

[0027] Figure 8 This is the third schematic diagram of the micropump provided in the embodiments of this application;

[0028] Figure 9a This is a schematic diagram of the micropump provided in the embodiments of this application in one of the following states;

[0029] Figure 9b This is a schematic diagram of the micropump provided in the embodiment of this application in state two;

[0030] Figure 9c This is a schematic diagram of the micropump provided in this application embodiment under state three.

[0031] Figure 9d This is a schematic diagram of the micropump provided in this application embodiment under state four.

[0032] Figure 10 This is a flowchart illustrating the operation of the micropump provided in the embodiments of this application;

[0033] Figure 11 This is a schematic diagram of the antenna control device provided in the embodiments of this application;

[0034] Figure 12 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] With the development of terminal devices, the frequency range that antennas in these devices need to cover is becoming increasingly wider. To achieve multi-band coverage, terminal devices typically need to place multiple antennas of different frequency bands. This makes the already congested internal space of the terminal device even more crowded, leading to coupling between antennas and reducing the device's communication performance. For example, 5G terminal devices require at least 4-8 antennas to form a multiple-input multiple-output (MIMO) configuration to improve channel capacity for 5G frequency band communication.

[0037] Besides increasing the number of antennas, frequency-reconfigurable antennas can also be used to achieve multi-band coverage for terminal devices. However, current reconfigurable antennas primarily use electronic components such as pin diodes, varactor diodes, MEMS switches, and variable capacitors to change the antenna's electrical length to achieve frequency reconfiguration. The more frequency bands the antenna needs to switch between, the more electronic components are required to change the antenna's electrical length. Due to the limited internal space of mobile devices, it is impossible to accommodate many electronic components. Therefore, reconfigurable antennas have the drawback of limited reconfiguration states, typically only allowing switching between a few states. In other words, frequency-reconfigurable antennas can usually only achieve a few discrete states of frequency band changes. With the development of terminal devices, these limited discrete states will be insufficient to meet the needs of future terminals.

[0038] This application provides an antenna control method that enables a terminal to achieve multi-band coverage without the need for multiple antennas. This avoids the problem of congestion within the already crowded internal space of the terminal device caused by placing multiple antennas of different frequency bands, which could lead to antenna coupling and thus improve the communication performance of the terminal device. Furthermore, the antenna control method provided in this application is not limited to a few discrete frequency band changes; it can support dozens, even hundreds or thousands, of frequency band changes for the antenna, and can precisely control any frequency point within the covered frequency band to be the antenna's resonant point. Details are as follows.

[0039] See Figure 1 , Figure 1 This is a structural diagram of a system to which the method provided in the embodiments of this application can be applied, such as... Figure 1 As shown, the device includes a control device 11, a micropump 12, an antenna 13, and a liquid reservoir 14. The antenna is a liquid metal antenna, and the liquid reservoir 14 stores liquid metal. The micropump 12 is connected to both the antenna 13 and the liquid reservoir 14. Under the control of the control device 11, the micropump 12 pumps the liquid metal from the antenna 13 to the liquid reservoir 14, or pumps the liquid metal from the liquid reservoir 14 into the antenna 13, thereby changing the electrical length of the antenna 13 and achieving multi-band coverage to support multi-band coverage of terminal devices. This application embodiment does not limit the mobile terminal; it can be a mobile phone, laptop computer, etc.

[0040] See Figure 2 , Figure 2 This is one of the flowcharts illustrating the antenna control method provided in the embodiments of this application. Figure 2 The antenna control method shown can be executed by the control device 11.

[0041] like Figure 2 As shown, the antenna control method may include the following steps:

[0042] Step 201: Obtain first information about the current state of the antenna. The first information includes at least one of the current return loss curve of the antenna and the current electrical length of the antenna. The antenna is a liquid metal antenna.

[0043] The aforementioned return loss curve can be an S11 curve. In practice, the current return loss curve or the current electrical length of the antenna can be obtained using specialized instruments. Obtaining the antenna's return loss curve and electrical length using specialized instruments is common knowledge and will not be elaborated upon here. In this method, it is possible to obtain only the current return loss curve, only the current electrical length, or both.

[0044] To improve accuracy, the first information of the antenna's current state can be acquired multiple times. If the first information acquired multiple times is the same, then this first information is determined to be the first information of the antenna's current state. If the first information acquired multiple times is different, it indicates that there may be a problem with the acquisition method or the acquisition instrument, and the problem needs to be eliminated before acquiring the first information again. If the first information acquired multiple times is different due to unavoidable factors such as manual operation, reasonable analysis should be performed, allowing for a certain degree of error within a reasonable range. The first information with the most repetitions or the smallest difference should be determined as the first information of the antenna's current state.

[0045] To improve accuracy, after adjusting the electrical length of the antenna using a micro-pump based on the comparison results, the first information of the antenna's current state can be acquired again, and the first information can be compared with the reference information again. If the first information matches the reference information, it means that the electrical length of the antenna has been adjusted to the electrical length corresponding to the target information; if the first information does not match the reference information, the electrical length of the antenna can be adjusted again using a micro-pump until the first information matches the reference information.

[0046] Step 202: Compare the first information with the reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and the target frequency of the antenna.

[0047] For a concrete implementation example, see [link / reference]. Figure 3 The target information can be received by the instruction transceiver processing unit in the computing and processing module of the mobile terminal. After receiving the target information, the instruction transceiver processing unit can determine the reference information based on the target information and send the reference information to the detection and comparison module of the mobile terminal.

[0048] As another example, target information can be pre-stored in the mobile terminal's storage module. When the antenna's operating frequency band needs to be changed to the target frequency band, the target information is read from the storage module, reference information is determined based on the target information, and the reference information is sent to the mobile terminal's detection and comparison module. Alternatively, reference information corresponding to the target information can be pre-stored in the mobile terminal's storage module. When the antenna's operating frequency band needs to be changed to the target frequency band, the reference information is directly read from the storage module and sent to the mobile terminal's detection and comparison module.

[0049] If the target information includes a target frequency band, the first return loss curve corresponding to the target frequency band can be compared with the current return loss curve of the antenna detected in step 101. If the comparison result shows that the first return loss curve matches the current return loss curve of the antenna, it indicates that the current frequency band of the antenna is the same as the target frequency band, and there is no need to adjust the electrical length of the antenna using a micro-pump; if the comparison result shows that the first return loss curve does not match the current return loss curve of the antenna, it indicates that the current frequency band of the antenna is different from the target frequency band, and the electrical length of the antenna needs to be adjusted using a micro-pump.

[0050] If the target information includes the target frequency, the first return loss curve corresponding to the target frequency can be compared with the current return loss curve of the antenna detected in step 101. If the comparison result shows that the first return loss curve matches the current return loss curve of the antenna, it indicates that the current frequency of the antenna is the same as the target frequency, and there is no need to adjust the electrical length of the antenna using a micro-pump; if the comparison result shows that the first return loss curve does not match the current return loss curve of the antenna, it indicates that the current frequency of the antenna is different from the target frequency, and the electrical length of the antenna needs to be adjusted using a micro-pump.

[0051] Frequency band refers to the range of electromagnetic waves, and the target frequency should be within the target frequency band. When the target information includes both the target frequency band and the target frequency, the return loss curves corresponding to the target frequency band and the target frequency are compared with the current return loss curve of the antenna. If both match, it indicates that the current frequency band and the current frequency of the antenna are the same as the target frequency, and no adjustment of the antenna's electrical length using a micro-pump is needed. If at least one comparison result shows a mismatch, then the electrical length of the antenna needs to be adjusted using a micro-pump.

[0052] Similarly, when the target information includes a target frequency band, the first electrical length corresponding to the target frequency band can be compared with the current electrical length of the antenna detected in step 101. If the comparison result shows that the first electrical length is the same as the current electrical length of the antenna, it indicates that the current frequency of the antenna is the same as the target frequency, and there is no need to adjust the electrical length of the antenna using a micro-pump. If the comparison result shows that the first electrical length is different from the current electrical length of the antenna, it indicates that the current frequency of the antenna is different from the target frequency, and the electrical length of the antenna needs to be adjusted using a micro-pump. The method of comparing the first electrical length corresponding to the target frequency with the current electrical length of the antenna is the same as described above, and will not be repeated here.

[0053] Step 203: Based on the comparison results, adjust the electrical length of the antenna using a micro-pump.

[0054] The horizontal axis of the return loss curve represents frequency, and the vertical axis represents the reflection coefficient. In practice, as an example, the first return loss curve corresponding to the target frequency can be compared with the current return loss curve of the antenna detected in step 101. If the comparison result is a mismatch, the current frequency of the antenna can be determined by the lowest point of the current return loss curve. The lowest point of the current return loss curve is the operating frequency of the antenna, and the horizontal axis value of this point is the current frequency of the antenna. If the current frequency of the antenna is greater than the target frequency, the liquid metal in the antenna can be increased by controlling the micro-pump, thereby decreasing the current frequency of the antenna until the current frequency of the antenna is changed to the target frequency. If the current frequency of the antenna is less than the target frequency, the liquid metal in the antenna can be decreased by controlling the micro-pump, thereby increasing the current frequency of the antenna until the current frequency of the antenna is changed to the target frequency.

[0055] The electrical length of an antenna is negatively correlated with its frequency. As another example, the current electrical length of the antenna can be directly compared with the first electrical length. If the current electrical length is less than the first electrical length, the amount of liquid metal in the antenna can be increased by controlling the micropump, thereby decreasing the current frequency of the antenna until the current frequency is changed to the target frequency. If the current electrical length is greater than the first electrical length, the amount of liquid metal in the antenna can be decreased by controlling the micropump, thereby increasing the current frequency of the antenna until the current frequency is changed to the target frequency.

[0056] In this embodiment, firstly, first information about the current state of the antenna is obtained. This first information includes at least one of the antenna's current return loss curve and its current electrical length. Then, the first information is compared with reference information to obtain a comparison result. The reference information includes at least one of the first return loss curve and the first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information, and the first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the antenna's target frequency band and target frequency. Finally, based on the comparison result, the electrical length of the antenna is adjusted using a micro-pump. In this way, by comparing the first information about the current state of the antenna with the reference information corresponding to the target information, and adjusting the electrical length of the antenna using a micro-pump based on the comparison result, the terminal can achieve multi-band coverage without the need for multiple antennas. This avoids the situation where placing multiple antennas of different frequency bands in the terminal further congests the already crowded internal space of the terminal device, leading to coupling between antennas, thereby improving the communication performance of the terminal device.

[0057] Furthermore, the method provided in this application embodiment only requires changing the electrical length of the liquid metal antenna through a micro-pump to achieve frequency reconstruction of the antenna, thereby enabling multi-band coverage. Most importantly, the method provided in this application embodiment can drive the liquid metal antenna to change its electrical length arbitrarily, under the premise of sufficiently high impedance matching and accuracy, thereby changing the antenna's resonant point. This allows for precise realization that any frequency point within the covered frequency band can be the antenna's resonant point.

[0058] Optionally, if the comparison result is that the first information does not match the reference information, then adjusting the electrical length of the antenna using a micro-pump based on the comparison result includes:

[0059] Based on the first information and the reference information, determine the target change value of the electrical length of the antenna;

[0060] Based on the target change value, determine the number of power supply cycles for the micropump;

[0061] The micropump is controlled to pump liquid metal to or from the antenna according to the number of power supply cycles.

[0062] For specific implementation details, please refer to [link / reference]. Figure 3The detection and comparison module sends the first and reference information to the calculation and processing module to calculate the target change value of the antenna's electrical length. The calculation and processing module can then determine the target change value required for the antenna to change from the current frequency band to the target frequency band, and calculate the number of micro-pump power supply cycles based on this target change value. Based on the target change value, a clock control signal corresponding to the target change value is determined and sent to the power supply unit of the micro-pump control module. Because the volume of liquid pumped or pumped out by the micro-pump in one power supply cycle is constant, the number of power supply cycles for the micro-pump power supply unit can be calculated based on the target change value and the volume of liquid pumped or pumped out by the micro-pump in one power supply cycle, thus driving the micro-pump. The power supply unit supplies power to the micro-pump according to the received clock control signal. Upon receiving the clock control, the micro-pump starts working. When the micro-pump runs forward, it drives the liquid metal in the storage tank into the antenna, increasing the antenna's radiation length and shifting the antenna's operating frequency band to a lower frequency. When the micro-pump runs in reverse, it drives the liquid metal in the antenna out of the storage tank, reducing the antenna's radiation length and shifting the antenna's operating frequency band to a higher frequency. After the antenna electrical length changing module completes the initial change in antenna length, it sends a change completion signal to the command transceiver unit in the calculation and processing module. Upon receiving this signal, the command transceiver unit sends a signal to the first information unit in the detection and comparison unit to re-detect the return loss curve after the initial antenna length change, comparing the detection result with the reference information again. If they do not match, the process continues with steps such as the target change value of the antenna electrical length, the number of power supply cycles, and the pumping or discharging of liquid by the micro-pump, until the first information matches the reference information. If they match, the data is sent back to the command transceiver unit, and a stop power supply command is sent to the power supply unit to stop powering the micro-pump. The calculation and processing module then receives the antenna operating frequency band change completion signal.

[0063] Optionally, controlling the micropump to pump liquid metal to or from the antenna according to the number of power supply cycles includes:

[0064] If the resonant frequency in the current return loss curve of the antenna is greater than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a first sequence to pump the liquid metal to the antenna, thereby increasing the electrical length of the antenna.

[0065] If the resonant frequency in the current return loss curve of the antenna is less than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a second sequence to pump the liquid metal out of the antenna, thereby reducing the electrical length of the antenna.

[0066] In practice, the resonant frequency of the return loss curve can be determined by the lowest point of the return loss curve, which is the antenna frequency. The current lowest point of the antenna's return loss curve is the antenna's operating frequency, and the horizontal axis of this point is the resonant frequency in the return loss curve, i.e., the antenna's current frequency. Similarly, the resonant frequency in the first return loss curve can be determined, which is the target frequency.

[0067] The first and second orders mentioned above are the opposite of each other. If the first order is the forward operation of the micropump, then the second order is the reverse operation of the micropump; if the first order is the reverse operation of the micropump, then the second order is the forward operation of the micropump.

[0068] Optionally, before comparing the first information with the reference information to obtain a comparison result, the method further includes:

[0069] Receive the target information;

[0070] The reference information is determined based on the target information.

[0071] As mentioned above, for specific implementation details, please refer to [link / reference]. Figure 3 The target information can be received by the instruction transceiver processing unit in the computing and processing module of the mobile terminal. After receiving the target information, the instruction transceiver processing unit can determine the reference information based on the target information, i.e., the target frequency and target frequency band. The method of determining the reference information, i.e., the first return loss curve and the first electrical length, is common knowledge and will not be elaborated here.

[0072] Traditional fluid-driven pumps are complex in structure and large in size, making them inconvenient for use in terminal devices with limited internal space. Therefore, this application also provides a micropump with a simple structure and small size, suitable for use in mobile terminal devices. Details are described below.

[0073] See Figure 4 , Figure 5 , Figure 6 and Figure 7 This application provides a micropump for implementing the above-described antenna control method, comprising a drive component, a housing, a first piston 1, and a second piston 2. The material of the housing is not limited; for example, it can be polymethyl methacrylate, plastic, etc. The shape of the housing is also not limited; for example, it can be a symmetrical I-shape, a cuboid, etc. The housing has a cavity 5 inside, and also provides a first channel 3 and a second channel 4. The first channel 3 and the second channel 4 can be hollow cylinders with both ends open. The diameter of the first channel 3 and the second channel 4 is not limited; for example, it can be 1 mm. One end of each of the first channel 3 and the second channel 4 abuts against the second piston 2, and the other end of each is used to connect to an external flexible hose.

[0074] The shape and size of the first piston 1 and the second piston 2 are not limited; for example, they can be rectangular. In a specific implementation, the outer dimensions of the first piston 1 can be 4mm*1mm*5mm, and the outer dimensions of the second piston 2 can be 5mm*1mm*7.5mm. The second piston 2 has a first through hole 21 and a second through hole 22. When the second piston 2 moves, the first through hole 21 and the second through hole 22 move accordingly, thus acting as a valve. The opening or closing of the first channel 3 and the second channel 4 can be controlled by controlling the movement of the second piston 2.

[0075] The driving components are connected to the first piston 1 and the second piston 2, respectively. The first piston 1 is located in the cavity 5. When the first piston 1 moves, the pressure inside the cavity 5 changes. By controlling the movement of the first piston 1, the flow direction of the liquid metal in the cavity 5 can be controlled. For example, when the first channel 3 is open, the first piston 1 moves to the first position, the pressure in the cavity 5 increases, and the liquid metal in the cavity 5 flows out of the cavity 5 through the first channel 3. Alternatively, when the first channel 3 is open, the first piston 1 moves to the first position, the pressure in the cavity 5 decreases, and the liquid metal in the storage tank flows into the cavity 5 through the first channel 3.

[0076] When the second piston 2 is in the initial position and the driving member drives the first piston 1 to the first position, the first channel 3 is connected to the cavity 5 through the first through hole 21. Liquid metal in the storage tank enters the cavity 5 through the first channel 3, or liquid metal in the cavity 5 enters the storage tank through the first channel 3.

[0077] When the first piston 1 is in the initial position and the driving member drives the second piston 2 to the second position, the second channel 4 is connected to the cavity 5 through the second through hole 22. The liquid metal in the cavity 5 enters the antenna through the second channel 4, or the liquid metal of the antenna enters the cavity 5 through the second channel 4.

[0078] The micropump provided in this application embodiment can change the volume of liquid metal in the antenna through the above control, thereby changing the electrical length of the antenna, and thus realizing the regulation of the electrical length of the antenna through the micropump, enabling the terminal to achieve multi-band coverage.

[0079] Furthermore, the micropump provided in this application includes a drive component, a housing, a first piston 1, and a second piston 2. The housing has a cavity 5 and a first channel 3 and a second channel 4. The drive component is connected to both the first piston 1 and the second piston 2. The first piston 1 is located in the cavity 5. When the first piston 1 moves, the pressure inside the cavity 5 changes. When the second piston 2 moves, the first channel 3 and the second channel 4 are either opened or closed. In other words, this micropump has a simple structure, small size, and can be used in mobile terminal devices.

[0080] Optionally, see Figure 4 and Figure 7 The driving component includes a power supply, a first elastic element 6, and a second elastic element 7. The first ends of both the first elastic element 6 and the second elastic element 7 are connected to the inner wall of the housing. The second end of the first elastic element 6 is connected to the first piston 1, and the second end of the second elastic element 7 is connected to the second piston 2. Specifically, the connection between the first ends of the first elastic element 6 and the second elastic element 7 and the inner wall of the housing, the connection between the second end of the first elastic element 6 and the first piston 1, and the connection between the second end of the second elastic element 7 and the second piston 2 can be achieved by welding or bonding.

[0081] The first elastic element 6 and the second elastic element 7 are also electrically connected to a power source. When the power source supplies power to the first elastic element 6, the first elastic element 6 contracts, causing the first piston 1 to move to a first position. When the power source supplies power to the second elastic element 7, the second elastic element 7 contracts, causing the second piston 2 to move to a second position. In a specific implementation, both the first elastic element 6 and the second elastic element 7 can be memory metal springs. When energized, the elastic elements contract, thus achieving the aforementioned movement.

[0082] Optionally, see Figure 5 , Figure 6 and Figure 7 The first piston 1 is provided with a first protrusion 11, and the second end of the first elastic element 6 is connected to the first piston 1 through the first end of the first protrusion 11. The second piston 2 is provided with a second protrusion 23, and the second end of the second elastic element 7 is connected to the second piston 2 through the first end of the second protrusion 23. By providing the first protrusion 11 and the second protrusion 23, the connection between the elastic element and the piston can be made more secure and reliable.

[0083] Optionally, see Figure 7 The driving component also includes a third elastic element 8 and a fourth elastic element 9. The first ends of both the third elastic element 8 and the fourth elastic element 9 are connected to the inner wall of the housing. The second end of the third elastic element 8 is connected to the first piston 1 through the second end of the first protrusion 11, and the second end of the fourth elastic element 9 is connected to the second piston 2 through the second end of the second protrusion 23. By providing the third elastic element 8 and the fourth elastic element 9, the movement of the piston can be made more reliable.

[0084] See Figure 8 , Figure 9a , Figure 9b , Figure 9c , Figure 9d and Figure 10 The following is a complete example illustrating the micropump provided in the embodiments of this application.

[0085] The micropump can adopt a differential structure, applying a 2mm preload to the first elastic element 6 and the second elastic element 7 before loading them onto the micropump housing. The third elastic element 8 and the fourth elastic element 9 do not require further processing. Figure 9a As shown in state 1. First, the first elastic element 6 is energized. The first elastic element 6 contracts due to heat, pulling the first piston 1 upwards. The third elastic element 8 is stretched by the pulling force of the first elastic element 6, generating and storing a certain amount of potential energy. As the first piston 1 is pulled upwards, the gap that was originally in contact with the cavity 5 gradually increases, causing the pressure inside the cavity 5 to be lower than the pressure outside. Simultaneously, the liquid metal outside flows into the cavity 5 through the first channel 3 because the pressure inside the cavity 5 is lower than the outside pressure. When the second piston 2 is pulled to the top, the energization of the first elastic element 6 is stopped, allowing the first elastic element 6 to cool down. Figure 9b As shown in state 2. When the second elastic element 7 is energized, it contracts due to heat, pulling the second piston 2 upwards. The fourth elastic element 9 is stretched by the pulling force of the second elastic element 7, generating and storing potential energy. The second piston 2 moves upwards, and the first through hole 21 and the second through hole 22 on the second piston 2 move upwards simultaneously. The liquid flowing through the first through hole 21 in states 1 and 2 into the first channel 3 (flow channel 1) is blocked because the first through hole 21 moves upwards. The liquid that was not flowing through in states 1 and 2 flows out of the second channel 4 (flow channel 2) because the second through hole 22 moves upwards, allowing the liquid metal to be pumped out of the cavity 5. When the second piston 2 is pulled to the top, the energization of the second elastic element 7 is stopped, allowing the second elastic element 7 to cool down. Figure 9c As shown in state 3. After the second through hole 22 is opened, the third elastic element 8 is energized. The third elastic element 8 contracts due to heat, pulling the first piston 1 downwards. The first elastic element 6 has now cooled and is in a stretchable state. The first elastic element 6 is stretched by the third elastic element 8, generating and storing a certain amount of potential energy. In state 2, the cavity 5 vacated by the first piston 1 being pulled upwards is compressed again due to the return of the first piston 1, making the air pressure inside the cavity 5 greater than the outside. The liquid inside the cavity 5 will be pumped out through the second channel 4, i.e., the flow channel 2. When the first piston 1 returns to its original position, the energization of the third elastic element 8 is stopped, and the third elastic element 8 cools down. Figure 9d As shown in state 4. Finally, the fourth elastic element 9 is energized, and it contracts due to heat. The second elastic element 7 has cooled down and is in a stretchable state. The second elastic element 7 is stretched by the fourth elastic element 9, generating and storing a certain amount of potential energy. The second piston 2 returns to its original position and stops energizing the fourth elastic element 9. The fourth elastic element 9 cools down, the second channel 4 (flow channel 2) is closed, and the first channel 3 (flow channel 1) is open. The micropump... Figure 9d State 4 returned to Figure 9aAs shown in state 1. Periodically energizing and de-energizing the first elastic element 6 to the fourth elastic element 9 from state 1 to state 4 enables the micropump to operate continuously. Conversely, energizing and de-energizing the fourth elastic element 9 to the first elastic element 6 in sequence enables the micropump to operate in reverse.

[0086] See Figure 11 This application also provides an antenna control device 300, comprising:

[0087] The acquisition module 301 is used to acquire first information about the current state of the antenna. The first information includes at least one of the current return loss curve of the antenna and the current electrical length of the antenna. The antenna is a liquid metal antenna.

[0088] The comparison module 302 is used to compare the first information with the reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and the target frequency of the antenna.

[0089] The control module 303 is used to adjust the electrical length of the antenna by means of a micro-pump based on the comparison result.

[0090] Optionally, if the comparison result is that the first information does not match the reference information, then adjusting the electrical length of the antenna using a micro-pump based on the comparison result includes:

[0091] Based on the first information and the reference information, determine the target change value of the electrical length of the antenna;

[0092] Based on the target change value, determine the number of power supply cycles for the micropump;

[0093] The micropump is controlled to pump liquid metal to or from the antenna according to the number of power supply cycles.

[0094] Optionally, controlling the micropump to pump liquid metal to or from the antenna according to the number of power supply cycles includes:

[0095] If the resonant frequency in the current return loss curve of the antenna is greater than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a first sequence to pump the liquid metal to the antenna, thereby increasing the electrical length of the antenna.

[0096] If the resonant frequency in the current return loss curve of the antenna is less than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a second sequence to pump the liquid metal out of the antenna, thereby reducing the electrical length of the antenna.

[0097] Optionally, before the comparison module 302, the device 300 further includes:

[0098] Receive the target information;

[0099] The reference information is determined based on the target information.

[0100] The antenna control device 300 can realize all the processes that the antenna control method embodiment in this application can achieve, and achieve the same beneficial effects. To avoid repetition, it will not be described again here.

[0101] This application provides an electronic device. For example... Figure 12 As shown, the electronic device 400 includes a processor 401, a memory 402, and a computer program stored in the memory 402 and executable on the processor. The various components of the electronic device 400 are coupled together via a bus system 404. It is understood that the bus system 404 is used to enable communication between these components.

[0102] The processor 401 is used to acquire first information about the current state of the antenna, the first information including at least one of the current return loss curve of the antenna and the current electrical length of the antenna, wherein the antenna is a liquid metal antenna.

[0103] The first information is compared with the reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and the target frequency of the antenna.

[0104] Based on the comparison results, the electrical length of the antenna is adjusted by a micro-pump.

[0105] Optionally, the processor 401 is further configured to determine a target change value in the electrical length of the antenna based on the first information and the reference information;

[0106] Based on the target change value, determine the number of power supply cycles for the micropump;

[0107] The micropump is controlled to pump liquid metal to or from the antenna according to the number of power supply cycles.

[0108] Optionally, the processor 401 is further configured to control the micropump to operate in a first sequence to pump the liquid metal to the antenna when the resonant frequency in the current return loss curve of the antenna is greater than the resonant frequency in the first return loss curve, thereby increasing the electrical length of the antenna.

[0109] If the resonant frequency in the current return loss curve of the antenna is less than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a second sequence to pump the liquid metal out of the antenna, thereby reducing the electrical length of the antenna.

[0110] Optionally, the processor 401 is also configured to receive the target information;

[0111] The reference information is determined based on the target information.

[0112] The electronic device 400 provided in this application embodiment can realize all the processes that can be realized in the antenna control method embodiment of this application, and achieve the same beneficial effects. To avoid repetition, it will not be described again here.

[0113] This application also provides a computer-readable storage medium storing a computer program. When executed by a processor, this computer program implements the various processes of the antenna control method embodiments described above and achieves the same technical effects. To avoid repetition, it will not be described again here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc.

[0114] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An antenna control method, characterized in that, include: Obtain first information about the current state of the antenna, the first information including at least one of the current return loss curve of the antenna and the current electrical length of the antenna, wherein the antenna is a liquid metal antenna; The first information is compared with the reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and the target frequency of the antenna. Based on the comparison results, the electrical length of the antenna is adjusted using a micro-pump; The micropump includes a drive unit, a housing, a first piston, and a second piston; The housing has a cavity, and the housing also has a first channel and a second channel. The driving member is connected to the first piston and the second piston respectively. The first piston is located in the cavity. When the first piston moves, the pressure inside the cavity changes. The second piston has a first through hole and a second through hole. One end of the first channel and the second channel abuts against the second piston. When the second piston is in the initial position and the driving member drives the first piston to the first position, the first channel communicates with the cavity through the first through hole, and the liquid metal in the storage tank enters the cavity through the first channel, or the liquid metal in the cavity enters the storage tank through the first channel. When the first piston is in the initial position and the driving member drives the second piston to the second position, the second channel communicates with the cavity through the second through hole, and the liquid metal in the cavity enters the antenna through the second channel, or the liquid metal of the antenna enters the cavity through the second channel.

2. The method according to claim 1, characterized in that, The comparison result indicates that the first information does not match the reference information. The step of adjusting the electrical length of the antenna using a micro-pump based on the comparison result includes: Based on the first information and the reference information, determine the target change value of the electrical length of the antenna; Based on the target change value, determine the number of power supply cycles for the micropump; The micropump is controlled to pump liquid metal to or from the antenna according to the number of power supply cycles.

3. The method according to claim 2, characterized in that, The control of the micropump to pump liquid metal to or from the antenna according to the number of power supply cycles includes: If the resonant frequency in the current return loss curve of the antenna is greater than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a first sequence to pump the liquid metal to the antenna, thereby increasing the electrical length of the antenna. If the resonant frequency in the current return loss curve of the antenna is less than the resonant frequency in the first return loss curve, the micropump is controlled to operate in a second sequence to pump the liquid metal out of the antenna, thereby reducing the electrical length of the antenna.

4. The method according to claim 1, characterized in that, Before comparing the first information with the reference information to obtain the comparison result, the method further includes: Receive the target information; The reference information is determined based on the target information.

5. A micropump for implementing the antenna control method as described in any one of claims 1 to 4, characterized in that, Includes a drive unit, a housing, a first piston, and a second piston; The housing has a cavity, and the housing also has a first channel and a second channel. The driving member is connected to the first piston and the second piston respectively. The first piston is located in the cavity. When the first piston moves, the pressure inside the cavity changes. The second piston has a first through hole and a second through hole. One end of the first channel and the second channel abuts against the second piston. When the second piston is in the initial position and the driving member drives the first piston to the first position, the first channel communicates with the cavity through the first through hole, and the liquid metal in the storage tank enters the cavity through the first channel, or the liquid metal in the cavity enters the storage tank through the first channel. When the first piston is in the initial position and the driving member drives the second piston to the second position, the second channel communicates with the cavity through the second through hole, and the liquid metal in the cavity enters the antenna through the second channel, or the liquid metal of the antenna enters the cavity through the second channel.

6. The micropump according to claim 5, characterized in that, The driving component includes a power supply, a first elastic element, and a second elastic element. The first ends of the first elastic element and the second elastic element are both connected to the inner wall of the housing. The second end of the first elastic element is connected to the first piston, and the second end of the second elastic element is connected to the second piston. The first elastic element and the second elastic element are also electrically connected to the power source. When the power source supplies power to the first elastic element, the first elastic element contracts, causing the first piston to move to the first position. When the power source supplies power to the second elastic element, the second elastic element contracts, causing the second piston to move to the second position.

7. The micropump according to claim 6, characterized in that, The first piston has a first protrusion, and the second end of the first elastic member is connected to the first piston through the first end of the first protrusion. The second piston has a second protrusion, and the second end of the second elastic member is connected to the second piston through the first end of the second protrusion.

8. The micropump according to claim 7, characterized in that, The drive component further includes a third elastic element and a fourth elastic element. The first ends of the third elastic element and the fourth elastic element are both connected to the inner wall of the housing. The second end of the third elastic element is connected to the first piston through the second end of the first protrusion. The second end of the fourth elastic element is connected to the second piston through the second end of the second protrusion.

9. An antenna control device, characterized in that, include: The acquisition module is used to acquire first information about the current state of the antenna, the first information including at least one of the current return loss curve of the antenna and the current electrical length of the antenna, wherein the antenna is a liquid metal antenna; A comparison module is used to compare the first information with reference information to obtain a comparison result. The reference information includes at least one of a first return loss curve and a first electrical length. The first return loss curve is the return loss curve of the antenna corresponding to the target information. The first electrical length is the electrical length corresponding to the target information. The target information includes at least one of the target frequency band and target frequency of the antenna. A control module is used to adjust the electrical length of the antenna using a micro-pump based on the comparison result. The micropump includes a drive unit, a housing, a first piston, and a second piston; The housing has a cavity, and the housing also has a first channel and a second channel. The driving member is connected to the first piston and the second piston respectively. The first piston is located in the cavity. When the first piston moves, the pressure inside the cavity changes. The second piston has a first through hole and a second through hole. One end of the first channel and the second channel abuts against the second piston. When the second piston is in the initial position and the driving member drives the first piston to the first position, the first channel communicates with the cavity through the first through hole, and the liquid metal in the storage tank enters the cavity through the first channel, or the liquid metal in the cavity enters the storage tank through the first channel. When the first piston is in the initial position and the driving member drives the second piston to the second position, the second channel communicates with the cavity through the second through hole, and the liquid metal in the cavity enters the antenna through the second channel, or the liquid metal of the antenna enters the cavity through the second channel.

10. An electronic device, comprising: A memory, a processor, and a program stored in the memory and executable on the processor; characterized in that the processor is configured to read the program in the memory to implement the steps of the antenna control method as described in any one of claims 1 to 4.

11. A readable storage medium for storing a program, characterized in that, When the program is executed by the processor, it implements the steps in the antenna control method as described in any one of claims 1 to 4.

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