MoM-Based Ground Current Reconstruction in RFI Application

Abstract

A method of moment (MoM)-based current reconstruction method is proposed to estimate the surface current density on the ground plane. Current continuity property is automatically enforced with Rao-Wilton-Glisson basis function. Both the least square method and the optimization method are utilized to solve the inverse problem and obtain the ground current. The proposed optimization method is successfully validated with numeric simulations and also a real-world measurement example. The reconstructed current distribution on the ground plane is further used in a typical radio frequency interference (RFI) example to perform RFI estimation and provide guidelines for RFI design. The proposed MoM-based ground current reconstruction method can be valuable to estimate and debug RFI issues in early design stage.

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Sponsor(s)

National Science Foundation (U.S.)

Comments

This work was supported in part by the National Science Foundation under Grant IIP-1440110.

Keywords and Phrases

Antennas; Current density; Electric currents; Estimation; Frequency estimation; Least squares approximations; Mathematical models; Method of moments (MOM); Optimization; Partial discharges; Radio frequency interference (RFI); Radio waves; Ground currents; Least square methods (LSQ); Optimization method; Radio frequency interference; Inverse problems; Ground current reconstruction

International Standard Serial Number (ISSN)

0018-9375; 1558-187X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2018

Link to Full Text

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