Magnetoelectric dipole antenna based on low profile and optimization method

Abstract

The invention discloses a low-profile-based magnetoelectric dipole antenna and an optimization method, and the antenna is characterized in that a connector inner core is fixedly arranged on a reflection plate, and the connector inner core is connected with a feed structure; the feed structure comprises a first feed strip and a second feed strip, and the second feed strip comprises a first strip, a second strip, a third strip and a fourth strip; a first magnetic dipole, a second magnetic dipole, a third magnetic dipole and a fourth magnetic dipole are fixedly arranged on the reflecting plate, the first magnetic dipole is connected with the first electric dipole, the second magnetic dipole is connected with the second electric dipole, the third magnetic dipole is connected with the third electric dipole, and the fourth magnetic dipole is connected with the fourth electric dipole. The low-profile design enables the antenna to be more compact and light, the application range of the antenna is widened, the overall size and weight of equipment are reduced, the stability of the antenna is enhanced, the influence of wind resistance and mechanical vibration on the antenna is reduced, and therefore the reliability of the antenna is improved, and the service life of the antenna is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of magneto-electric dipoles, and in particular to a low-profile magneto-electric dipole antenna and an optimization method thereof. Background Art

[0002] Nowadays, 5G mobile communication has evolved from the initial theoretical part to the current large-scale commercial practice. In the process of rapid development and updating of mobile communication technology, base station antennas, as one of the key components in the communication system, are also constantly innovating. In order to meet the coverage of the base station, the base station antenna has evolved from the original omnidirectional antenna to a directional antenna. At the same time, in order to suppress multipath fading and increase channel capacity, the antenna has changed from the original single polarization to dual polarization. At the same time, the original single-frequency narrowband 1G antenna has also evolved into a complex multi-band broadband antenna. The development of 5G mobile communication technology has put forward more requirements for the transmitted communication signals, including high quality and high speed. As an important part of the communication system, the base station antenna is still facing challenges such as large antenna size, difficulty in increasing communication capacity, saving installation space and saving construction costs. Nowadays, base station antennas need to have the characteristics of wide bandwidth, small size and high gain to reduce signal attenuation and ensure communication quality. Miniaturized base station antennas have attracted widespread attention due to their small size, reduced installation space and cost savings. Magnetoelectric dipole antennas have also been widely used in base station antenna design due to their excellent radiation characteristics and broadband characteristics. Miniaturized magnetoelectric dipole antennas have also received increasing attention. Currently, low-profile magnetoelectric dipole methods can be classified into the following categories: folded magnetic dipoles, loaded metamaterials, loaded frequency selective surface structures, etc.

[0003] For example, Chinese patent announcement number CN112117534B discloses a high-isolation dual-polarized magneto-electric dipole antenna based on PCB and an optimization method, including a dielectric substrate for providing electrical connections between components, which includes a base hole and a floor, the base hole is embedded in the center of the dielectric substrate and couples the electromagnetic wave signal to the patch unit; the patch unit is placed on the upper surface of the dielectric substrate, used to construct an electric dipole, which includes a radiating patch and a cross piece, the radiating patch has four and the quarter-wavelength aperture formed with the cross piece is equivalent to a magnetic dipole; the feeding unit is arranged on the upper surface of the dielectric substrate and intersects with the patch unit, presenting a forked microstrip structure. The feeding structure in the present invention adopts a forked microstrip feeding form and H-shaped aperture coupling, which has a higher resonant impedance, good cross-polarization performance and isolation.

[0004] In the existing patent technology, the magnetic dipole is generally bent, but the bending of the magnetic dipole will cause the impedance matching and radiation performance of the antenna to deteriorate. How to ensure the performance of the antenna while reducing the height of the antenna? By studying and analyzing the structure of the traditional magneto-electric dipole antenna, the height of the entire antenna is reduced by bending the magnetic dipole. At the same time, the original feeder structure is bent to improve the impedance matching of the antenna. Summary of the invention

[0005] The present application provides a low-profile magnetoelectric dipole antenna and an optimization method. The low-profile design makes the antenna more compact and lightweight, and is easy to integrate into various devices, thereby increasing the application range of the antenna and reducing the overall size and weight of the device. The low-profile design enhances the stability of the antenna. Since the height of the antenna is reduced, the impact of wind resistance and mechanical vibration on the antenna is also reduced, thereby improving the reliability and service life of the antenna.

[0006] The present application provides a low-profile magneto-electric dipole antenna, comprising: The reflector is used to reflect electromagnetic waves, and a connector core is fixedly arranged on the reflector, and the connector core is connected to the feeding structure, and the connector core is used to support the feeding structure; the feeding structure includes a first feeding strip and a second feeding strip, and the second feeding strip includes a first strip, a second strip, a third strip and a fourth strip; a first magnetic dipole, a second magnetic dipole, a third magnetic dipole and a fourth magnetic dipole are fixedly arranged on the reflector, the first magnetic dipole is connected to the first electric dipole, the second magnetic dipole is connected to the second electric dipole, the third magnetic dipole is connected to the third electric dipole, and the fourth magnetic dipole is connected to the fourth electric dipole.

[0007] Preferably, the first feeding strip is placed orthogonally to the second feeding strip, and the height of the first feeding strip is greater than the height of the second feeding strip.

[0008] Preferably, the first strip is parallel to the vertical arm of the magnetic dipole, the first strip being used to direct energy to the magnetic dipole.

[0009] Preferably, the second strip is an L-shaped structure, consisting of two metal strips of different lengths, and the second strip is used to couple energy to the bent magnetic dipole.

[0010] Preferably, the third strip is placed horizontally and is in an inductive state, and the third strip is used to couple the transmitted energy to the electric dipole.

[0011] Preferably, the fourth strip is an L-shaped structure and is in a capacitive state, and the fourth strip is used to offset the inductive part introduced by the third strip (14).

[0012] Preferably, the first strip, the second strip, the third magnetic dipole and the fourth magnetic dipole constitute a transmission line.

[0013] The present application also provides an optimization method based on a low-profile magnetoelectric dipole antenna. The specific method for optimizing the magnetoelectric dipole antenna is as follows: S101, obtaining a variation range of impedance according to an electromagnetic simulation tool; S102, matching impedance values ​​based on usage scenarios of the antenna, and designing a matching network according to the matched impedance values; S103, simulating the designed matching network; S104, adjusting the parameters of the matching network according to the simulation results.

[0014] Preferably, based on the designed matching network, the steps of constructing the optimization model are: S201, setting an adjustment range of the parameters based on the matching network parameters; S202, selecting an optimization algorithm based on a parameter adjustment range and constructing an optimization model; S203, collecting historical data, and selecting candidate data from the collected historical data; S204, comparing the selected candidate data with the data calculated by the optimization model to obtain the fitness of the optimization model.

[0015] Preferably, the candidate data is input into the optimization model, and the optimization model calculates the performance prediction value corresponding to the parameter according to the built-in algorithm, compares the calculated performance prediction value with the actual performance value in the candidate data, and calculates the error between the performance prediction value and the candidate value, and takes the inverse of the calculated error.

[0016] One or more technical solutions provided in the present application have at least the following technical effects or advantages: the low-profile design makes the antenna more compact and lightweight, easy to integrate into various devices, improves the application range of the antenna, and reduces the overall size and weight of the device. The low-profile design enhances the stability of the antenna. Since the height of the antenna is reduced, the influence of wind resistance and mechanical vibration on it will also be reduced, thereby improving the reliability and service life of the antenna. The antenna combines the advantages of magnetic dipoles and electric dipoles to achieve broadband radiation characteristics, which enables the antenna to maintain stable gain and radiation pattern in a wider frequency band. By optimizing the structure and size of the antenna, a higher gain can be achieved. The radiation pattern of the antenna is stable and uniform, which can meet the application requirements of outdoor directional base stations, etc. Through precise impedance matching characteristic analysis and matching network design, the impedance matching effect of the antenna feed port is improved, the reflection and loss of the signal during transmission are reduced, and the energy can be transmitted from the transmission line to the antenna radiation part more efficiently, thereby improving the radiation efficiency of the antenna. The overall performance of the antenna is comprehensively simulated, evaluated and tested to ensure that key performance indicators such as the antenna's gain, beam width, radiation pattern and cross-polarization ratio meet the design requirements. Through optimization and adjustment, the antenna exhibits stable gain, narrow and stable beam width, clear radiation pattern and high cross-polarization ratio within the target frequency band, thereby improving the communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a low-profile magneto-electric dipole antenna according to an embodiment of the present invention; Figure 2 is a side view of a magnetoelectric dipole antenna according to an embodiment of the present invention; Figure 3 A schematic diagram of an antenna feeding structure according to an embodiment of the present invention; Figure 4 is a graph of return loss of each port of an antenna according to an embodiment of the present invention; Figure 5 The antenna gain and beam width of the embodiment of the present invention vary with frequency; FIG6 is a horizontal plane radiation pattern of the antenna according to an embodiment of the present invention at different frequencies; Figure 7 A schematic flow chart of a method for optimizing a low-profile magneto-electric dipole antenna according to an embodiment of the present invention; Figure 8 The figure is a flow chart of constructing an optimization model based on a designed matching network according to an embodiment of the present invention.

[0018] In the figure: 1, second electric dipole; 2, first electric dipole; 3, fourth electric dipole; 4, third electric dipole; 5, first magnetic dipole; 6, second magnetic dipole; 7, third magnetic dipole; 8, fourth magnetic dipole; 9, first feeding strip; 10, second feeding strip; 11, reflecting plate; 12, first strip; 13, second strip; 14, third strip; 15, fourth strip. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings.

[0020] Embodiment 1: Figure 1 is a low-profile magneto-electric dipole antenna according to an embodiment of the present invention, such as Figure 2 and Figure 3As shown, it includes: a reflector 11, the reflector 11 is made of a metal aluminum plate, the metal aluminum plate has conductivity and reflectivity, the reflector 11 is used to reflect electromagnetic waves, and enhances the directivity and gain of the antenna, an SMA coaxial connector inner core is fixedly arranged on the reflector 11, the SMA coaxial connector inner core is connected to the feeding structure, the SMA coaxial connector inner core is used to support the feeding structure, the feeding structure includes a first feeding strip 9 and a second feeding strip 10, the first feeding strip 9 and the second feeding strip 10 are orthogonally arranged, the height of the first feeding strip 9 is greater than the height of the second feeding strip 10 to avoid crossing and ensure efficient energy transmission, the second feeding strip 10 includes a first The first strip 12, the second strip 13, the third strip 14 and the fourth strip 15; the first strip 12 is an isosceles trapezoid, which has two equal waist sides and an upper base and a lower base. The width of the upper base is smaller than the lower base. The upper base is connected to the input end of the feeding structure, and the lower base corresponds to the vertical arm of the magnetic dipole. The design of the trapezoid makes the first strip 12 gradually change in width, which can more evenly distribute the transmitted electromagnetic wave energy and avoid excessive concentration or loss of energy in a certain area; the second strip 13 is an L-shaped structure. The second strip 13 is composed of two metal strips of different lengths. The two metal strips are perpendicular to each other and connected together to form an L-shaped structure, wherein One metal strip is longer and connected to the feeding structure, responsible for receiving and transmitting electromagnetic wave energy. The other metal strip is shorter and corresponds to the bent magnetic dipole, responsible for efficiently coupling energy to the magnetic dipole. The design of the second strip 13 of the L-shaped structure allows the energy to be bent during transmission, so that the energy can be more efficiently coupled to the bent magnetic dipole. The coupling method reduces energy loss and improves the radiation efficiency of the antenna. The third strip 14 is placed horizontally and is in an inductive state. The inductive characteristics make the third strip 14 have the characteristics of delay and energy storage in response to electromagnetic waves. At the same time, the inductive characteristics enable the antenna to resonate within a specific frequency band, thereby enhancing the antenna. Radiation efficiency and directivity, the third strip 14 is used to couple the transmitted energy to the electric dipole; the fourth strip 15 is an L-shaped structure and is in a capacitive state. When the third strip 14 introduces an inductive component, the impedance of the antenna in a specific frequency band will change, affecting the radiation efficiency and signal receiving ability of the antenna. The fourth strip 15 is in a capacitive state and can produce an electromagnetic effect opposite to the inductive component, thereby effectively offsetting or balancing the inductive effect. The capacitance and inductance offset each other to achieve an impedance matching state, so that the antenna maintains a stable impedance characteristic in a wider frequency band, thereby improving the overall performance of the antenna, including radiation efficiency, signal reception stability and directivity.

[0021] like Figure 4 , Figure 5As shown in FIG6 , the first magnetic dipole 5, the second magnetic dipole 6, the third magnetic dipole 7 and the fourth magnetic dipole 8 are fixedly arranged on the reflector 11. The first magnetic dipole 5 is connected to the first electric dipole 2, the second magnetic dipole 6 is connected to the second electric dipole 1, the third magnetic dipole 7 is connected to the third electric dipole 4, and the fourth magnetic dipole 8 is connected to the fourth electric dipole 3. The first electric dipole 2, the second electric dipole 1, the third electric dipole 4 and the fourth electric dipole 3 are placed horizontally, and the four electric dipoles constitute the electric field radiation part of the antenna; the first magnetic dipole 5, the second magnetic dipole 6, the third magnetic dipole 7 and the fourth magnetic dipole 8 are all bent, and the feeding structure is also bent while the magnetic dipoles are bent, so as to improve the impedance matching of the antenna and reduce the cross section to 0. 16λL, the impedance bandwidth of the first port of the antenna is 31% (3.12-4.28GHz, |S11|<-15dB), and the impedance bandwidth of the second port is 29.2% (3.28-4.40GHz, |S22|<-15dB), the port isolation is higher than 18dB, the gain is stable at 7.56-9.94dBi in the working frequency band, and the H-plane beam width is stable between 65±7°. The magnetic dipole is connected to the electric dipole to form the radiation unit of the antenna. When the electromagnetic wave signal is transmitted to the magnetic dipole through the feeding structure, they will respond quickly and generate strong magnetic field radiation. Unlike the electric dipole, the magnetic dipole mainly radiates electromagnetic waves through the magnetic field, thereby complementing the electric dipole and jointly realizing the omnidirectional radiation of the antenna.

[0022] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: the low-profile design makes the antenna more compact and lightweight, easy to integrate into various devices, thereby increasing the application range of the antenna and reducing the overall size and weight of the device. The low-profile design enhances the stability of the antenna. Since the height of the antenna is reduced, the impact of wind resistance and mechanical vibration on it is also reduced, thereby improving the reliability and service life of the antenna. The antenna combines the advantages of magnetic dipoles and electric dipoles to achieve wide-band radiation characteristics, which enables the antenna to maintain stable gain and radiation pattern within a wider frequency band. By optimizing the structure and size of the antenna, a higher gain can be achieved. The radiation pattern of the antenna is stable and uniform, which can meet the application requirements of outdoor directional base stations and the like.

[0023] Embodiment 2: Based on embodiment 1, this embodiment optimizes the magnetoelectric dipole antenna to improve the impedance matching effect of the antenna.

[0024] like Figure 7 As shown, the specific method for optimizing the magneto-electric dipole antenna is as follows: S101, obtaining a variation range of impedance according to an electromagnetic simulation tool; Specifically, the electromagnetic simulation software Ansys is used to perform three-dimensional modeling of the existing antenna feeding structure. After the modeling is completed, the simulation parameters are set, and the simulation program is run. The key data such as the propagation path and reflection coefficient of the electromagnetic wave in the antenna structure are calculated according to the set parameters and model. The data is exported to an external file, and the data visualization tool MATLAB is used to draw the impedance change curve. The impedance change curve usually contains two lines, one representing the real part R of the impedance, and the other representing the imaginary part X of the impedance. Both lines change with the frequency. In the 5G N78 frequency band, these two lines fluctuate accordingly as the frequency increases from 3.3 GHz to 3.8 GHz.

[0025] S102, matching impedance values ​​based on usage scenarios of the antenna, and designing a matching network according to the matched impedance values; Specifically, the matching method selected is microstrip line matching. Microstrip line matching can provide stable impedance transformation. The parameters of microstrip line matching are calculated. The parameters of microstrip line matching include length, width and position. The length of the microstrip line is related to the wavelength of the electromagnetic wave, which determines the phase change of the electromagnetic wave on the microstrip line. By accurately calculating the length, it is ensured that the electromagnetic wave obtains the required phase difference when transmitting on the microstrip line, thereby achieving impedance matching; the width of the microstrip line affects its characteristic impedance and the impedance matching effect. The width is calculated using simulation software. The microstrip line is closely connected to the feeding structure of the antenna and is accurately positioned to reduce losses and reflections during energy transmission.

[0026] S103, simulating the designed matching network; Furthermore, the designed matching network is integrated into the antenna model, and the integrated antenna model is simulated to collect the return loss of the port, that is, the S11 parameter. The return loss is a curve that changes with frequency, indicating the return loss value of the antenna feeding port at different frequencies. The preset return loss threshold is -15dB. In the entire working frequency band, if the return loss is less than -15dB, it means that the impedance of the antenna feeding port is matched with the characteristic impedance of the transmission line, and the energy can be efficiently transmitted from the transmission line to the antenna radiation part. Otherwise, the match is not achieved.

[0027] S104, adjusting the parameters of the matching network according to the simulation results.

[0028] Specifically, when the simulation results show that the matching effect is not ideal, the length and width of the microstrip line are adjusted. Increasing the length of the microstrip line will reduce its impedance, while reducing the length may increase the impedance. Increasing the width of the microstrip line will reduce its impedance, while reducing the width may increase the impedance. After adjusting the parameters, re-run the simulation and observe the change in return loss. If the change is as expected, do not continue to adjust; if the change is not large or does not meet expectations, it is necessary to re-analyze and adjust other parameters. Through multiple simulations and adjustments, gradually approach the optimal solution.

[0029] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: through precise impedance matching characteristic analysis and matching network design, the impedance matching effect of the antenna feeding port is improved, and the reflection and loss of the signal during transmission are reduced, so that energy can be more efficiently transmitted from the transmission line to the antenna radiation part, thereby improving the radiation efficiency of the antenna; the overall performance of the antenna is comprehensively simulated, evaluated and tested to ensure that key performance indicators such as the antenna's gain, beam width, radiation pattern and cross-polarization ratio meet the design requirements. Through optimization and adjustment, the antenna exhibits stable gain, narrow and stable beam width, clear radiation pattern and high cross-polarization ratio in the target frequency band, thereby improving the communication quality.

[0030] Embodiment 3: Based on the parameters in the matching network in Embodiment 2, the parameter range is set. The adjustment of the parameter range is limited by the size of the antenna board. This embodiment sets the parameter range based on Embodiment 2 and creates an optimization model according to the parameter range.

[0031] like Figure 8 As shown in the figure, the steps to build an optimization model based on the designed matching network are: S201, setting an adjustment range of the parameters based on the matching network parameters; Specifically, based on the adjustment of the length and width of the microstrip line in step S104, according to the antenna board size and operating frequency, the adjustment range of the microstrip line length is 5mm to 50mm, according to the antenna board size and impedance requirements, the adjustment range of the microstrip line width is 0.5mm to 5mm, and discrete points are set according to the parameter adjustment range. For the microstrip line length, a discrete point is set for every 1mm. For each parameter, a list containing all discrete points is generated. For the microstrip line length, a discrete point list with a step size of 1mm from 5mm to 50mm is generated.

[0032] S202, selecting an optimization algorithm based on a parameter adjustment range and constructing an optimization model; Furthermore, a genetic algorithm is used, with the length and width of the microstrip line taken as optimization variables, represented by mathematical symbols, and the impedance matching characteristics (return loss) and performance indicators (gain, beam width) of the antenna taken as optimization targets, represented by constraints. An optimization model between parameters and optimization targets is established based on the above data, and the optimization variables, optimization targets and constraints are combined to form a complete optimization problem.

[0033] S203, collecting historical data, and selecting candidate data from the collected historical data; Specifically, historical data is collected, data related to network optimization is identified in the collected historical data, the identified data is integrated into the data set, candidate data is selected from the data set by random sampling according to the requirements of the optimization target and the characteristics of the data, the candidate data is verified, and the verified candidate data is integrated into the candidate data set.

[0034] S204, comparing the selected candidate data with the data calculated by the optimization model to obtain the fitness of the optimization model.

[0035] Furthermore, the candidate data is input into the optimization model, and the optimization model calculates the performance prediction value corresponding to the parameter according to the built-in algorithm, and compares the calculated performance prediction value with the actual performance value in the candidate data. The error is calculated and the inverse of the calculated error is taken. The higher the value of the inverse of the error, the stronger the prediction ability of the optimization model and the better the fitness.

[0036] The technical solutions in the above-mentioned embodiments of the present application have at least the following technical effects or advantages: setting the parameter adjustment range and the discrete point setting limits the search space, reduces invalid calculations, and improves the optimization efficiency. By comparing with the actual performance values, errors in the model can be discovered and corrected in a timely manner, thereby improving the accuracy of the model. The fitness evaluation provides a clear guiding direction for the improvement of the model. The application of the optimization model enables the design parameters to more accurately meet the requirements of the impedance matching characteristics and performance indicators.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-profile magneto-electric dipole antenna, characterized in that: include: A connector core is fixedly arranged on the reflection plate (11), the reflection plate (11) is used to reflect electromagnetic waves, the connector core is connected to the feeding structure, and the connector core is used to support the feeding structure; The feeding structure comprises a first feeding strip (9) and a second feeding strip (10), wherein the second feeding strip (10) comprises a first strip (12), a second strip (13), a third strip (14) and a fourth strip (15); A first magnetic dipole (5), a second magnetic dipole (6), a third magnetic dipole (7) and a fourth magnetic dipole (8) are fixedly arranged on the reflection plate (11); the first magnetic dipole (5) is connected to the first electric dipole (2); the second magnetic dipole (6) is connected to the second electric dipole (1); the third magnetic dipole (7) is connected to the third electric dipole (4); and the fourth magnetic dipole (8) is connected to the fourth electric dipole (3).

2. A low-profile magneto-electric dipole antenna according to claim 1, characterized in that: The first feeding strip (9) is placed orthogonally to the second feeding strip (10), and the height of the first feeding strip (9) is greater than the height of the second feeding strip (10).

3. The low-profile magneto-electric dipole antenna according to claim 1, characterized in that: The first strip (12) is parallel to the vertical arm of the magnetic dipole, and the first strip (12) is used to direct energy to the magnetic dipole.

4. The low-profile magneto-electric dipole antenna according to claim 1, characterized in that: The second strip (13) is an L-shaped structure, the second strip (13) is composed of two metal strips of different lengths, and the second strip (13) is used to couple energy to the bent magnetic dipole.

5. The low-profile magneto-electric dipole antenna according to claim 1, characterized in that: The third strip (14) is placed horizontally and is in an inductive state, and the third strip (14) is used to couple the transmitted energy to the electric dipole.

6. The low-profile magneto-electric dipole antenna according to claim 1, characterized in that: The fourth strip (15) is an L-shaped structure and is in a capacitive state. The fourth strip (15) is used to offset the inductive part introduced by the third strip (14).

7. The low-profile magneto-electric dipole antenna according to claim 3, characterized in that: The first strip (12), the second strip (13), the third magnetic dipole (7) and the fourth magnetic dipole (8) constitute a transmission line.

8. An optimization method based on a low-profile magneto-electric dipole antenna according to any one of claims 1 to 7, characterized in that: The specific method for optimizing the magnetoelectric dipole antenna is as follows: S101, obtaining a variation range of impedance according to an electromagnetic simulation tool; S102, matching impedance values ​​based on usage scenarios of the antenna, and designing a matching network according to the matched impedance values; S103, simulating the designed matching network; S104, adjusting the parameters of the matching network according to the simulation results.

9. The optimization method based on low-profile magneto-electric dipole antenna according to claim 8, characterized in that: Based on the designed matching network, the steps to build the optimization model are: S201, setting an adjustment range of the parameters based on the matching network parameters; S202, selecting an optimization algorithm based on a parameter adjustment range and constructing an optimization model; S203, collecting historical data, and selecting candidate data from the collected historical data; S204, comparing the selected candidate data with the data calculated by the optimization model to obtain the fitness of the optimization model.

10. The optimization method based on low-profile magneto-electric dipole antenna according to claim 9, characterized in that: The candidate data is input into the optimization model. The optimization model calculates the performance prediction value corresponding to the parameter according to the built-in algorithm, compares the calculated performance prediction value with the actual performance value in the candidate data, and calculates the error between the performance prediction value and the candidate value, and takes the inverse of the calculated error.

Images