# US 2021/0279380 A1 · Method for analyzing electromagnetic characteristic and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0279380 A1 - Document ID: US20210279380A1 - Status: Published application - Kind: A1 - Application number: 17/135,132 - Filed: 2020-12-28 - Published: 2021-09-09 - Earliest claimed: 2020-03-03 - Assignees: Wistron Neweb Corp. - Applicants: Wistron NeWeb Corporation - Inventors: An-Ting Hsiao; Shun-Chung KUO - Web page: https://patentgrep.com/patent/US20210279380A1 ## CPC - G06F 30/20: Design optimisation, verification or simulation (optimisation, verification or simulation of circuit designs G06F30/30) - H02J 50/00: Circuit arrangements or systems for wireless supply or distribution of electric power - G06F 30/15: Vehicle, aircraft or watercraft design - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract A method for analyzing electromagnetic characteristic includes steps as follows. An electromagnetic evaluation model establishing step is performed, which includes establishing an object unit, a power transmitting unit, and a simulating unit. The object unit is an arbitrary geometry shape. The power transmitting unit has an electromagnetic signal. The simulating unit is defined as at least one base point emitting a plurality of beams to form a plurality of projection points. An electromagnetic reference model is provided, wherein the object unit and the power transmitting unit are combined to form the electromagnetic reference model. A comparing step is performed, wherein a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model are obtained by the electromagnetic signal, respectively, and the two radiation pattern data are compared to obtain an electromagnetic gain difference value. ## Claims ### Claim 1 A method for analyzing electromagnetic characteristic, which is used to analyze an electromagnetic characteristic of an object collocating with a power transmitting element, and the method for analyzing electromagnetic characteristic comprising: performing an electromagnetic evaluation model establishing step, comprising: establishing an object unit, wherein the object unit is an arbitrary geometry shape, and the object unit has an object information; establishing a power transmitting unit, wherein the power transmitting unit has an electromagnetic signal; and establishing a simulating unit, wherein the simulating unit is defined as at least one base point emitting a plurality of beams to form a plurality of projection points, and the projection points are used to simulate a plurality of metal dusts on the object unit; wherein, the object unit, the power transmitting unit and the simulating unit are combined to form an electromagnetic evaluation model, a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and a sum of areas of the projection points, and the projection point coverage rate is a metal coverage rate of the metal dusts on the object unit; providing an electromagnetic reference model, wherein the object unit and the power transmitting unit are combined to form the electromagnetic reference model; and performing a comparing step, wherein a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model are obtained by the electromagnetic signal, respectively, and the two radiation pattern data are compared to obtain an electromagnetic gain difference value. ### Claim 2 (depends on 1) The method for analyzing electromagnetic characteristic of claim 1, wherein the object information is an area information or a volume information. ### Claim 3 (depends on 1) The method for analyzing electromagnetic characteristic of claim 1, wherein in the simulating unit, a number of the at least one base point is at least two, and each of the base points emits the one beam to form the projection points. ### Claim 4 (depends on 3) The method for analyzing electromagnetic characteristic of claim 3, wherein in the electromagnetic evaluation model, distances between any two of the beams adjacent to each other are equal, and an arrangement of the projection points is defined as the object unit has a uniform metal dust distribution. ### Claim 5 (depends on 1) The method for analyzing electromagnetic characteristic of claim 1, wherein in the simulating unit, the at least one base point emits the beams to form the projection points. ### Claim 6 (depends on 5) The method for analyzing electromagnetic characteristic of claim 5, wherein in the electromagnetic evaluation model, a cut plane is provided at a predetermined distance between the beams and the at least one base point, the at least one base point is located on a normal line perpendicular to the cut plane, and on the cut plane, distances between any two of the beams adjacent to each other are equal, and an arrangement of the projection points is defined as the object unit has a regular metal dust distribution. ### Claim 7 (depends on 1) The method for analyzing electromagnetic characteristic of claim 1, wherein in the simulating unit, a number of the at least one base point is at least two, and each of the base points emits the beams to form the projection points. ### Claim 8 (depends on 7) The method for analyzing electromagnetic characteristic of claim 7, wherein in the electromagnetic evaluation model, distances between any two of the beams adjacent to each other are not equal, and an arrangement of the projection points is defined as the object unit has a random metal dust distribution. ### Claim 9 (depends on 1) The method for analyzing electromagnetic characteristic of claim 1, wherein an azimuth radiation pattern data and an elevation angle radiation pattern data are obtained in a horizontal direction and a vertical direction by the radiation pattern data, respectively. ### Claim 10 (depends on 9) The method for analyzing electromagnetic characteristic of claim 9, wherein an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation angle radiation pattern data. ### Claim 11 (depends on 10) The method for analyzing electromagnetic characteristic of claim 10, further comprising: evaluating whether the electromagnetic gain difference value between the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is less than a predetermined value. ### Claim 12 An electronic device, comprising: a memory storing an electromagnetic characteristic evaluation program; and a processor coupled to the memory for executing the electromagnetic characteristic evaluation program; wherein the electromagnetic characteristic evaluation program comprises: an electromagnetic evaluation model established module comprising: an object unit, wherein the object unit is an arbitrary geometry shape, and the object unit has an object information; a power transmitting unit, wherein the power transmitting unit has an electromagnetic signal; and a simulating unit, wherein the simulating unit is defined as at least one base point emitting a plurality of beams to form a plurality of projection points, and the projection points are used to simulate a plurality of metal dusts on the object unit; wherein, the object unit, the power transmitting unit and the simulating unit are combined to form an electromagnetic evaluation model, a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and a sum of areas of the projection points, and the projection point coverage rate is a metal coverage rate of the metal dusts on the object unit; an electromagnetic reference model established module for combining the object unit and the power transmitting unit to obtain an electromagnetic reference model; and a comparing module, wherein a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model are obtained by the electromagnetic signal, respectively, and the two radiation pattern data are compared to obtain an electromagnetic gain difference value. ### Claim 13 (depends on 12) The electronic device of claim 12, wherein the object information is an area information or a volume information. ### Claim 14 (depends on 12) The electronic device of claim 12, wherein: in the simulating unit, a number of the at least one base point is at least two, and each of the base points emits the one beam to form the projection points; and in the electromagnetic evaluation model, distances between any two of the beams adjacent to each other are equal, and an arrangement of the projection points is defined as the object unit has a uniform metal dust distribution. ### Claim 15 (depends on 12) The electronic device of claim 12, wherein: in the simulating unit, the at least one base point emits the beams to form the projection points; and in the electromagnetic evaluation model, a cut plane is provided at a predetermined distance between the beams and the at least one base point, the at least one base point is located on a normal line perpendicular to the cut plane, and on the cut plane, distances between any two of the beams adjacent to each other are equal, and an arrangement of the projection points is defined as the object unit has a regular metal dust distribution. ### Claim 16 (depends on 12) The electronic device of claim 12, wherein: in the simulating unit, a number of the at least one base point is at least two, and each of the base points emits the beams to form the projection points; and in the electromagnetic evaluation model, distances between any two of the beams adjacent to each other are not equal, and an arrangement of the projection points is defined as the object unit has a random metal dust distribution. ### Claim 17 (depends on 12) The electronic device of claim 12, wherein an azimuth radiation pattern data and an elevation angle radiation pattern data are obtained in a horizontal direction and a vertical direction by the radiation pattern data, respectively. ### Claim 18 (depends on 17) The electronic device of claim 17, wherein an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation angle radiation pattern data. ### Claim 19 (depends on 18) The electronic device of claim 18, wherein the electromagnetic characteristic evaluation program further comprises: an evaluating module, wherein the evaluating module is for evaluating whether the electromagnetic gain difference value between the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is less than a predetermined value.