ELECTROMAGNETIC FIELD SIMULATION METHOD AND ELECTROMAGNETIC FIELD SIMULATION SYSTEM

• US 20150324498A1
• Filed: 02/12/2015
• Published: 11/12/2015
• Est. Priority Date: 05/08/2014
• Status: Abandoned Application

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Nagase, Kenji, IZUMI, Hirotomo
• Application Number:
  US14/620,662
• Publication Number:
  US 20150324498A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 30/367 Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods

Abstract

An electromagnetic field simulation method includes: obtaining, when a reference signal including a plurality of frequencies is input to a first point of design data of an object, a variation of a reference signal at a second point by a computer through an electromagnetic field simulation; calculating variable data at each of the plurality of frequencies based on the variation of the reference signal; frequency-decomposing a signal applied to the first point; and calculating a frequency distribution of the signal at the second point which propagates from the first point based on the frequency-decomposed signal and the variable data at each of the plurality of frequencies.

Claims

1. An electromagnetic field simulation method comprising:

Obtaining, when a reference signal including a plurality of frequencies is input to a first point of design data of an object, a variation of a reference signal at a second point by a computer through an electromagnetic field simulation;

calculating variable data at each of the plurality of frequencies based on the variation of the reference signal;

frequency-decomposing a signal applied to the first point; and

calculating a frequency distribution of the signal at the second point which propagats from the first point based on the frequency-decomposed signal and the variable data at each of the plurality of frequencies.

2. The electromagnetic field simulation method according to claim 1, wherein an electric field intensity is calculated as the variable data at each of the plurality of frequencies.

3. The electromagnetic field simulation method according to claim 2, wherein the variable data at each of the plurality of frequencies includes the electric field intensity and a first power which are associated with each of the plurality of frequencies.

4. The electromagnetic field simulation method according to claim 3, wherein a second power is associated with at each of the plurality of frequencies in the frequency-decomposed signal.

5. The electromagnetic field simulation method according to claim 4, wherein the frequency distribution of the signal at the second point is calculated based on a ratio of the first power to the second power and the electric field intensity.

6. The electromagnetic field simulation method according to claim 1, wherein a Gaussian pulse is used as the reference signal.

7. An electromagnetic field simulation method, comprising:

obtaining, when a reference signal including a plurality of frequencies is input to each of a plurality of third points of design data of an object, a variation of the reference signal at the second point through an electromagnetic field simulation, the plurality of third points being included in a first point of the design data of an object;

calculating variable data at each of the plurality of frequencies based on the variation of the reference signal;

frequency-decomposing a signal applied to each of the third points;

calculating a frequency distribution of the signal propagated at second point which propagates from each of the third points based on the frequency-decomposed signal and the variable data at each of the plurality of frequencies; and

synthesizing a plurality of frequency distributions on the plurality of third points.

8. The electromagnetic field simulation method according to claim 7, wherein an electric field intensity is calculated as the variable data at each of the plurality of frequencies.

9. The electromagnetic field simulation method according to claim 8, wherein the variable data at each of the plurality of frequencies includes the electric field intensity and a first power which are associated with each of the plurality of frequencies.

10. The electromagnetic field simulation method according to claim 9, wherein a second power is associated with at each of the plurality of frequencies in the frequency-decomposed signal.

11. The electromagnetic field simulation method according to claim 10, wherein the frequency distribution of the signal at the second point is calculated based on a ratio of the first power to the second power and the electric field intensity.

12. The electromagnetic field simulation method according to claim 7, wherein a Gaussian pulse is used as the reference signal.

13. An electromagnetic field simulation system comprising:

a processor; and

a memory configured to store an electromagnetic field simulation program to be executed by the processor,

wherein the processor, based on the electromagnetic field simulation program, performs operations to;

obtain, when a reference signal including a plurality of frequencies is input to a first point of design data of an object, a variation of a reference signal at a second point through an electromagnetic field simulation;

calculate variable data at each of the plurality of frequencies based on the variation of the reference signal;

frequency-decompose a signal applied to the first point; and

calculate a frequency distribution of the signal at the second point which propagates from the first point based on the frequency-decomposed signal and the variable data at each of the plurality of frequencies.

14. The electromagnetic field simulation system according to claim 13, further comprising a storage device configured to store the variable data.

15. The electromagnetic field simulation system according to claim 13, wherein an electric field intensity is calculated as the variable data at each of the plurality of frequencies.

16. The electromagnetic field simulation system according to claim 15, wherein the variable data at each of the plurality of frequencies includes the electric field intensity and a first power which are associated with each of the plurality of frequencies.

17. The electromagnetic field simulation system according to claim 16, wherein a second power is associated with at each of the plurality of frequencies in the frequency-decomposed signal.

18. The electromagnetic field simulation system according to claim 17, wherein the frequency distribution of the signal at the second point is calculated based on a ratio of the first power to the second power and the electric field intensity.

19. The electromagnetic field simulation system according to claim 13, wherein a Gaussian pulse is used as the reference signal.