Invention Grant
- Patent Title: Electromagnetic interference reduction calculation method, device, and program, and its electronic circuit
- Patent Title (中): 电磁干扰减少计算方法，装置及程序及其电子电路
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Application No.: US11573883Application Date: 2005-08-22
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Publication No.: US07953566B2Publication Date: 2011-05-31
- Inventor: Takashi Yoshinaga
- Applicant: Takashi Yoshinaga
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2004-240651 20040820
- International Application: PCT/JP2005/015593 WO 20050822
- International Announcement: WO2006/019196 WO 20060223
- Main IPC: G01R3/00
- IPC: G01R3/00
Abstract:
A calculation method of electromagnetic interference reduction through spectrum diffusion that is for reducing the electromagnetic interference, in which, when a center frequency of a measurement bandwidth is changed so that a spectrum having the maximum amplitude is included in the measurement bandwidth, of a plurality of spectra generated from the frequency spectrum of an electromagnetic interference signal through the spectrum diffusion, the amplitudes of all spectra included in the measurement bandwidth are added up and the maximum total sum of the amplitudes is divided by the amplitude of the electromagnetic interference signal, hence to estimate the electromagnetic interference reduction.
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