1. An electromagnetic characteristic analysis method for analyzing an electromagnetic characteristic of an object matched with a power transmitting element comprises the following steps:

performing an electromagnetic assessment model building step comprising:

establishing an object unit, wherein the object unit is in any geometric shape and has object information;

establishing a power transmitting unit, wherein the power transmitting unit is provided with an electromagnetic signal; and

establishing a simulation unit, wherein the simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit;

combining the object unit, the power emission unit and the simulation unit to form an electromagnetic evaluation model, and obtaining a projection point coverage rate of the electromagnetic evaluation model according to the object information and the area sum of the projection points, wherein the projection point coverage rate is a metal coverage rate of the metal dust in the object unit;

providing an electromagnetic reference model, wherein the electromagnetic reference model is combined with the object unit and the power transmitting unit; and

and performing comparison, wherein the comparison step obtains radiation field type data of the electromagnetic reference model and radiation field type data of the electromagnetic evaluation model respectively through the electromagnetic signals, and compares the two radiation field type data to obtain an electromagnetic gain difference value.

2. The method according to claim 1, wherein the object information is an area information or a volume information.

3. The method of claim 1, wherein the number of the at least one base point in the simulation unit is at least two, and each base point emits a beam to form the plurality of projection points.

4. The method of claim 3, wherein the beams are equally spaced in the electromagnetic evaluation model, and an arrangement of the projected spots is formed to define the object unit to have a uniform distribution of metal dust.

5. The method of claim 1, wherein the at least one base point emits the beams to form the projected points in the simulation unit.

6. The method of claim 5, wherein the beams are equally spaced in the electromagnetic evaluation model, and an arrangement of the projected spots is formed to define the object unit having a regular metal dust distribution.

7. The method of claim 1, wherein the number of the at least one base point in the simulation unit is at least two, and each base point emits the beams to form the projection points.

8. The method of claim 7, wherein the electromagnetic property analysis model has unequal beam-to-beam spacings, and an arrangement of the projected spots is formed to define the object unit having a random metal dust distribution.

9. The method of claim 1, wherein the radiation pattern data is obtained in a horizontal direction and a vertical direction to obtain an azimuth radiation pattern data and an elevation radiation pattern data, respectively.

10. The method of claim 9, wherein an electromagnetic gain value of the electromagnetic estimation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation radiation pattern data.

11. The electromagnetic property analysis method of claim 10, further comprising:

and evaluating whether the electromagnetic gain difference between the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is smaller than a preset value.

12. An electronic device, comprising:

a memory, the memory storing an electromagnetic characteristic evaluation program; and

a processor, coupled to the memory, for executing the electromagnetic property evaluation procedure;

wherein the electromagnetic property evaluation program includes:

an electromagnetic assessment model building module, the electromagnetic assessment model building module comprising:

an object unit, which is in any geometric shape and has object information;

a power transmitting unit having an electromagnetic signal; and

the simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit;

combining the object unit, the power transmitting unit and the simulation unit to obtain an electromagnetic evaluation model, and obtaining a projection point coverage rate of the electromagnetic evaluation model according to the object information and the area sum of the projection points, wherein the projection point coverage rate is a metal coverage rate of the metal dust in the object unit;

an electromagnetic reference model building module, which is used for merging the object unit and the power transmitting unit to obtain an electromagnetic reference model; and

and the comparison module obtains radiation field type data of the electromagnetic reference model and radiation field type data of the electromagnetic evaluation model respectively by the electromagnetic signal and compares the two radiation field type data to obtain an electromagnetic gain difference value.

13. The electronic device of claim 12, wherein the object information is an area information or a volume information.

14. The electronic device of claim 12, wherein:

in the simulation unit, the number of the at least one base point is at least two, and each base point emits one beam to form the projection points; and

in the electromagnetic evaluation model, the beams are equally spaced, and an arrangement of the projected spots formed defines the object unit to have a uniform metal dust distribution.

15. The electronic device of claim 12, wherein:

in the simulation unit, the at least one base point emits the beams to form the projection points; and

in the electromagnetic evaluation model, the beams are equally spaced, and an arrangement of the projected points is formed to define the object unit to have a regular metal dust distribution.

16. The electronic device of claim 12, wherein:

in the simulation unit, the number of the at least one base point is at least two, and each base point emits the beams to form the projection points; and

in the electromagnetic evaluation model, the beams are not equally spaced, and an arrangement of the projected points is formed to define the object unit to have a random metal dust distribution.

17. The electronic device of claim 12, wherein the radiation pattern data obtains an azimuth radiation pattern data and an elevation radiation pattern data in a horizontal direction and a vertical direction, respectively.

18. The electronic device of claim 17, wherein an electromagnetic gain value of the electromagnetic estimation model and the electromagnetic reference model at a specific angle is obtained in the azimuth radiation pattern data or the elevation radiation pattern data.

19. The electronic device of claim 18, wherein the electromagnetic property evaluation program further comprises:

an evaluation module, configured to evaluate whether the difference between the electromagnetic gain of the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is smaller than a predetermined value.

Background

In recent years, wireless communication devices, such as global positioning systems, digital televisions, radio sets, and the like, are often installed in vehicles, and these wireless communication devices are required to receive or transmit wireless signals through vehicle antennas to perform applications such as ranging and information exchange.

The antenna for vehicle is usually disposed on the bumper of vehicle, but the baking varnish containing metal component in the bumper of vehicle will affect the characteristics of the antenna for vehicle, resulting in characteristic attenuation or false alarm, so the influence of the baking varnish containing metal component on the antenna in the bumper of vehicle needs to be evaluated in advance. However, the commonly used electromagnetic simulation software lacks the setting of the metal dust effect, so that the corresponding simulation cannot be performed.

Therefore, it is desirable to improve the defects of the electromagnetic simulation software and effectively evaluate the influence between the object containing the metal component and the antenna, so as to achieve more accurate simulation prediction.

Therefore, it is desirable to provide an electromagnetic characteristic analyzing method and an electronic device to solve the above problems.

Disclosure of Invention

An objective of the present invention is to provide an electromagnetic characteristic analysis method and an electronic device, which are used for simulating objects with different metal dust distributions by using electromagnetic simulation software to determine the change of the electromagnetic characteristics.

An embodiment of the present invention provides an electromagnetic characteristic analysis method for analyzing an electromagnetic characteristic of an object associated with a power transmitting element, the electromagnetic characteristic analysis method including performing an electromagnetic evaluation model building step, providing an electromagnetic reference model, and performing a comparison step. The electromagnetic evaluation model establishing step comprises establishing an object unit, establishing a power transmitting unit and establishing a simulation unit. The object unit is in any geometric shape and has object information. The power transmitting unit has an electromagnetic signal. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit. The combined object unit, the power emission unit and the simulation unit form an electromagnetic evaluation model, a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and the area sum of the projection points, and the projection point coverage rate is a metal coverage rate of metal dust in the object unit. The electromagnetic reference model combines an object unit and a power transmitting unit. And a comparison step, respectively obtaining a radiation field type data of the electromagnetic reference model and a radiation field type data of the electromagnetic evaluation model through the electromagnetic signals, and comparing the two radiation field type data to obtain an electromagnetic gain difference value.

Another embodiment of the present invention provides an electronic device, which includes a memory and a processor. The memory stores an electromagnetic characteristic evaluation program, and the processor is coupled to the memory and used for executing the electromagnetic characteristic evaluation program, wherein the electromagnetic characteristic evaluation program comprises an electromagnetic evaluation model establishing module, an electromagnetic reference model establishing module and a comparison module. The electromagnetic evaluation model building module comprises an object unit, a power transmitting unit and a simulation unit, wherein the object unit is in any geometric shape and has object information, and the power transmitting unit has an electromagnetic signal. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit. The object unit, the power emission unit and the simulation unit are combined to obtain an electromagnetic evaluation model, a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and the area sum of the projection points, and the projection point coverage rate is a metal coverage rate of metal dust in the object unit. The electromagnetic reference model building module is used for combining the object unit and the power transmitting unit to obtain an electromagnetic reference model. The comparison module obtains a radiation field type data of the electromagnetic reference model and a radiation field type data of the electromagnetic evaluation model respectively through the electromagnetic signals, and compares the two radiation field type data to obtain an electromagnetic gain difference value.

Therefore, the invention simulates the vehicle bumper and the vehicle antenna by constructing electromagnetic evaluation models of different metal dust distributions, and analyzes the electromagnetic characteristics to judge the proper metal components of the vehicle bumper and the better arrangement position between the vehicle bumper and the vehicle antenna, so as to facilitate discussion and research for coping measures and minimize the electromagnetic attenuation degree of the vehicle antenna.

Drawings

In order to make the aforementioned and other objects, features, and advantages of the invention, as well as others which will become apparent, reference is made to the following description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a flow chart illustrating steps of a method for analyzing electromagnetic properties according to an embodiment of the present invention;

FIG. 2A is a schematic diagram of an electromagnetic evaluation model according to embodiment 1 of the present invention;

FIG. 2B is a schematic diagram of an analog unit according to embodiment 1 of the present invention;

FIG. 3A is a schematic diagram of an electromagnetic evaluation model according to embodiment 2 of the present invention;

FIG. 3B is a schematic diagram of a simulation unit according to embodiment 2 of the present invention;

FIG. 4A is a schematic diagram of an electromagnetic evaluation model according to embodiment 3 of the present invention;

FIG. 4B is a schematic diagram of a simulation unit according to embodiment 3 of the present invention;

FIG. 5A is a graph showing the radiation pattern of comparative example 1 of the present invention;

FIG. 5B is a diagram showing the radiation pattern of embodiment 1 of the present invention;

FIG. 5C is a diagram showing the radiation pattern of embodiment 2 of the present invention;

FIG. 5D is a diagram showing the radiation pattern of embodiment 3 of the present invention;

FIG. 6A shows the azimuthal radiation patterns of comparative example 1, example 1 to example 3 of the present invention;

FIG. 6B is a diagram showing the elevation radiation pattern of the present invention in comparative example 1 and examples 1 to 3; and

fig. 7 is a schematic diagram illustrating an architecture of an electronic device according to another embodiment of the invention.

Description of the main component symbols:

100 electromagnetic characteristic analysis method

110. 120, 130 step

200. 300, 400 electromagnetic evaluation model

210. 310, 410, 611 object units

220. 320, 420, 612 power transmitting unit

230. 330, 430, 613 analog unit

231. 331, 431 base points

232. 332, 432 beams

233. 333, 433 projection point

500 electronic device

510 memory

520 processor

600 electromagnetic characteristic evaluation program

610 electromagnetic evaluation model building module

620 electromagnetic reference model building module

630 comparing module

Detailed Description

Embodiments of the present invention will be described below with reference to the accompanying drawings. For the purpose of clarity, numerous implementation details are set forth in the following description. However, the reader should understand that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner; and repeated elements will likely be referred to using the same reference numerals.

Referring to fig. 1, a flowchart illustrating steps of a method 100 for electromagnetic property analysis according to an embodiment of the invention is shown. The electromagnetic property analysis method 100 is used for analyzing an electromagnetic property of an object associated with a power emitting device, and includes steps 110, 120 and 130.

Step 110 is to perform an electromagnetic evaluation model building step, which includes building an object unit, building a power transmitting unit, and building a simulation unit. The object unit is of any geometric shape and has an object information, which may be, but not limited to, area information or volume information. The power transmitting unit has an electromagnetic signal that simulates an antenna for a vehicle. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit. The object unit, the power emission unit and the simulation unit are combined to form an electromagnetic evaluation model, the object unit is arranged between the power emission unit and the simulation unit, a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and the area sum of the projection points, and the projection point coverage rate is a metal coverage rate of metal dust in the object unit.

Step 120 provides an electromagnetic reference model, which combines the object unit and the power transmitting unit. In detail, the difference between the electromagnetic reference model and the electromagnetic evaluation model is that the electromagnetic reference model does not include a simulation unit for simulating metal dust on the object unit, so that the object unit in the electromagnetic reference model does not include metal dust and can be used as a reference value for electromagnetic characteristic analysis.

Step 130 is a comparison step, in which a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model are obtained respectively through the electromagnetic signal in the power transmitting unit, and the two radiation pattern data are compared to obtain an electromagnetic gain difference. In detail, the radiation pattern data respectively obtains an azimuth radiation pattern data and an elevation radiation pattern data in a horizontal direction and a vertical direction. In addition, an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation field pattern data or the elevation radiation field pattern data, and a difference value between the electromagnetic gain value of the electromagnetic reference model and the electromagnetic gain value of the electromagnetic evaluation model at the specific angle is an electromagnetic gain difference value.

The above steps are all performed in the electromagnetic simulation software, but the electromagnetic simulation software of the present invention can be, but is not limited to IE3D, HFSS or CST. The following provides a detailed description of the embodiments with reference to the accompanying drawings.

Referring to fig. 2A, fig. 3A and fig. 4A, wherein fig. 2A is a schematic diagram of an electromagnetic evaluation model 200 according to embodiment 1 of the present invention, fig. 3A is a schematic diagram of an electromagnetic evaluation model 300 according to embodiment 2 of the present invention, and fig. 4A is a schematic diagram of an electromagnetic evaluation model 400 according to embodiment 3 of the present invention. The difference between the embodiments 1 to 3 lies in the difference of the simulation unit, the simulation unit of the present invention projects the light beams of the light source onto the object unit to obtain the projection area, wherein the base point is assumed as the light source, the light beams are assumed as the light beams, and the projection point of the light beams projected onto the object unit from the base point is assumed as the projection area of the light beams projected onto the object unit from the light source, so that the projection point is used to simulate the size and distribution of the metal dust in the object unit. In addition, the comparative example 1 of the present invention is an electromagnetic reference model (not shown) without a simulation unit, which can refer to the foregoing and is not described herein again.

In fig. 2A, the electromagnetic evaluation model 200 of embodiment 1 includes an object unit 210, a power transmitting unit 220 and a simulation unit 230, wherein the object unit 210 and the power transmitting unit 220 can refer to the foregoing description and are not repeated herein. However, referring to fig. 2B, which is a schematic diagram of the simulation unit 230 according to embodiment 1 of the present invention, the simulation unit 230 first constructs at least one base point 231, and the number of the base points 231 is at least two, and a beam 232 emitted from each base point 231 is projected onto the object unit 210 to form a plurality of projected points 233, and in the electromagnetic evaluation model 200 of fig. 2A, since the beams (see the beam 232 of fig. 2B) emitted from each base point (see the base point 231 of fig. 2B) have the same pitch and are emitted in parallel to the object unit 210, the projected points (see the projected points 233 of fig. 2B) formed do not overlap, and a row of the projected points defines that the object unit 210 has a uniform metal dust distribution.

In fig. 3A, the electromagnetic evaluation model 300 of embodiment 2 includes an object unit 310, a power transmitting unit 320 and a simulation unit 330, wherein the object unit 310 and the power transmitting unit 320 can refer to the foregoing description and are not described herein again. However, referring to fig. 3B, a schematic diagram of the simulation unit 330 according to embodiment 2 of the present invention is shown, in which the simulation unit 330 first constructs at least one base point 331, the beams 332 emitted from the base point 331 are projected onto the object unit 310 to form a plurality of projection points 333, and in the electromagnetic evaluation model 300 of fig. 3A, since the beams (the beams 332 emitted from the base point 331 (see the base point 331 of fig. 3B) are equally spaced and are scattered from the base point in any direction toward the object unit 310, the projection points (the projection points 333 emitted from the object unit 310) formed do not overlap, and a row of the projection points defines a regular metal dust distribution of the object unit 310. In detail, the difference between the embodiment 1 and the embodiment 2 is that the number of the base points of the embodiment 2 is at least two, and the base points of the embodiment 2 emit a plurality of beams in an arbitrary direction, and the base points of the embodiment 1 do not emit in a horizontal direction, so that the projection points of the embodiment 2 are more dense at the positions close to the base points, and are less dense at the positions far from the base points, and thus are not uniformly distributed.

In fig. 4A, the electromagnetic evaluation model 400 of embodiment 3 includes an object unit 410, a power transmitting unit 420 and a simulation unit 430, wherein the object unit 410 and the power transmitting unit 420 can refer to the foregoing description and are not repeated herein. However, referring to fig. 4B, a schematic diagram of the simulation unit 430 according to embodiment 3 of the present invention is shown, in which the simulation unit 430 first constructs at least one base point 431, and the number of the base points 431 is at least two, the plurality of beams 432 emitted from each base point 431 are projected onto the object unit 410 to form a plurality of projection points 433, and in the electromagnetic evaluation model 400 of fig. 4A, because the distances between the beams (see the beams 432 of fig. 4B) emitted from each base point (see the base point 431 of fig. 4B) are not equal, and the distances between the base points and the surface normal of the object unit 410 are not equal, there are also overlapped projection points (see the projection points 433 of fig. 4B), and an array of the projection points can define that the object unit 410 has a random metal dust distribution.

The area of the object unit of each of examples 1 to 3 and comparative example 1 was 37088mm²And the sum of the areas of the projected points is about 5560mm²Therefore, the projected point coverage obtained in examples 1 to 3 is 10% to 20%, which simulates the metal coverage of the metal dust on the object unit, and thus it can be assumed that the metal coverage of examples 1 to 3 is 10% to 20%.

Referring to fig. 5A, 5B, 5C and 5D, fig. 5A is a radiation field diagram of comparative example 1 of the present invention, fig. 5B is a radiation field diagram of embodiment 1 of the present invention, fig. 5C is a radiation field diagram of embodiment 2 of the present invention, and fig. 5D is a radiation field diagram of embodiment 3 of the present invention. From fig. 5A to 5D, it can be seen that the change caused by the metal dust at a specific angle is reflected due to the influence of the metal dust on the energy of the main beam, and the energy ramp phenomenon can be seen both in the lateral direction (+ -90 degrees) and in the rear direction (+ -180 degrees).

In addition, from the radiation pattern diagrams of fig. 5A to 5D, the azimuth radiation pattern data and the elevation radiation pattern data can be acquired in the horizontal direction and the vertical direction, respectively. Referring to fig. 6A and 6B, fig. 6A shows an azimuth radiation field pattern of comparative example 1 and examples 1 to 3 of the present invention, and fig. 6B shows an elevation radiation field pattern of comparative example 1 and examples 1 to 3 of the present invention.

As can be seen from fig. 6A and 6B, when the metal coverage of examples 1 to 3 is 10% to 20%, the overall electromagnetic gain is located right in front of the power transmission unit (Theta ═ 0 degrees). As shown in fig. 6A, when Theta of the power transmitting unit is 0 degree, the electromagnetic gain difference between comparative example 1 and examples 1 to 3 is 1.0dBi to 2.0dBi, which represents that if the vehicular antenna is disposed right in front of the vehicular bumper having a metal coverage of 10% to 20%, the electromagnetic characteristic of the vehicular antenna is attenuated by 1.0dB to 2.0 dB.

In addition, when the power emitting unit is at a position of Theta of-45 degrees, the electromagnetic gain difference between comparative example 1 and examples 1 to 3 is 1.5dBi to 5.0dBi, and the difference is larger because the metal dust is distributed differently, and the metal dust and the power emitting unit are probably relatively close to each other, so that the power emitting unit is more sensitive. However, when the power transmitting unit is at a position of Theta +45 degrees, the electromagnetic gain difference between comparative example 1 and examples 1 to 3 is 0.5dBi to 1.5dBi, probably because the metal dust is far away from the power transmitting unit and the relative attenuation amplitude is consistent.

The results regarding the electromagnetic gain values and the electromagnetic gain differences at specific angles for comparative example 1 and examples 1 to 3 are shown in tables one to three below.

The present invention simulates the distribution of metal dust in object units by constructing different projection point distributions, and as can be seen from tables one to three, the distribution of metal dust in comparative example 1 and embodiments 1 to 3 has no difference from the distribution position, which results in different characteristics at a specific angle, and the electromagnetic gain difference is smaller than a predetermined value, for example, 4.0dBi, which is used as a problem of determining in advance whether the gain attenuation is too large at the specific angle at the installation position between the vehicle bumper and the vehicle antenna.

Therefore, in application, the distance between the vehicle antenna and the vehicle wire rod can be a multiple of one-half wavelength of the vehicle antenna, wherein the vehicle antenna can be but is not limited to an array antenna, the vehicle bumper is made of a plastic material, which can be but is not limited to a blend of Polypropylene (PP), Polyetherimide (PEI), ABS resin or Polycarbonate (PC) and Polyethylene terephthalate (PET), and the electromagnetic characteristic analysis method of the present invention is used to adjust the metal dust content in the vehicle bumper or the setting positions of the vehicle antenna and the vehicle bumper, so that the electromagnetic gain value of the vehicle antenna can meet the specification.

Fig. 7 is a schematic diagram of an electronic device 500 according to another embodiment of the invention. The electronic device 500 includes a memory 510 and a processor 520, wherein the memory 510 stores an electromagnetic characteristic evaluation procedure 600, and the processor 520 is coupled to the memory 510 and configured to execute the electromagnetic characteristic evaluation procedure 600. The electromagnetic property evaluation program 600 includes an electromagnetic evaluation model building module 610, an electromagnetic reference model building module 620 and a comparison module 630.

In detail, the electromagnetic evaluation model building module 610 includes an object unit 611, a power transmitting unit 612 and a simulation unit 613. The object unit 611 has any geometric shape and has an object information, which can be, but not limited to, area information or volume information. The power transmitting unit 612 has an electromagnetic signal. The simulation unit 613 defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dusts in the object unit. The object unit 611, the power transmitting unit 612 and the simulation unit 613 are combined to form an electromagnetic evaluation model, and the object unit 611 is disposed between the power transmitting unit 612 and the simulation unit 613, and a projected point coverage of the electromagnetic evaluation model is obtained according to the object information and the sum of the areas of the projected points, and the projected point coverage is a metal coverage of the metal dust on the object unit 611.

In addition, the simulation unit 613 may obtain different arranged projection points according to different numbers of base points and beams to define the distribution of the metal dust of the object unit 611, and for the embodiment of the simulation unit 613, reference may be made to fig. 2A to 4B, which are not described herein again.

The electromagnetic reference model building module 620 is used for combining the object unit 611 and the power transmitting unit 612 to obtain an electromagnetic reference model. The description of the electromagnetic reference model can refer to the foregoing description, and is not repeated herein.

The comparison module 630 obtains a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model respectively from the electromagnetic signal, and compares the two radiation pattern data to obtain an electromagnetic gain difference. In detail, the radiation pattern data respectively obtains an azimuth radiation pattern data and an elevation radiation pattern data in a horizontal direction and a vertical direction. In addition, an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation field pattern data or the elevation radiation field pattern data, and a difference value between the electromagnetic gain value of the electromagnetic reference model and the electromagnetic gain value of the electromagnetic evaluation model at the specific angle is an electromagnetic gain difference value.

In other embodiments, the azimuth radiation pattern data or the elevation radiation pattern data may also be obtained, for example, only the azimuth radiation pattern data, the electromagnetic gain values of the electromagnetic evaluation model and the electromagnetic reference model at specific angles are obtained, and the difference between the electromagnetic gain value of the electromagnetic reference model and the electromagnetic gain value of the electromagnetic evaluation model at specific angles is the electromagnetic gain difference.

In addition, the electromagnetic characteristic evaluation procedure 600 may further include an evaluation module (not shown) for evaluating whether the electromagnetic gain difference between the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is smaller than a predetermined value.

In summary, the electromagnetic characteristic analysis method and the electronic device of the present invention can simulate and analyze the electromagnetic gain attenuation degree between the vehicle bumper and the vehicle antenna by constructing objects with different metal dust distributions through the electromagnetic simulation software, and specify acceptable metal components or determine positions where problems may occur in application in advance, so as to reduce the cost and development time of multiple verification between the vehicle bumper and the vehicle antenna.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention, and therefore, the scope of the invention should be determined by that of the appended claims.