Radio-Frequency Interference Estimation using Equivalent Dipole-Moment Models and Decomposition Method Based on Reciprocity
In modern electronic products, the noise from high-speed digital parts is likely to interfere with nearby receivers, causing radio-frequency interference (RFI) issues. In this paper, the equivalent dipole-moment models and a decomposition method based on reciprocity theory are proposed being used together to estimate the coupling from the noise source to the victim antennas. The dipole-moment models are extracted from the near fields of the noise source by solving the inverse problem. The tangential electromagnetic fields on a Huygens's surface, which enclose the victim antenna, can be calculated from these equivalent dipole-moment models. Then, the victim antenna only is treated as a radiator. The tangential electromagnetic fields from the radiating antenna on the same Huygens's surface can be obtained. With these two groups of the fields on the Huygens's surface, the reciprocity theory is applied to estimate the coupling from the noise source to the victim antenna. This method is validated by full-wave simulations and measurements of a simple printed circuit board. The proposed method provides convenience to estimate RFI issues in the early design stage and saves the time of RFI simulation and measurements.
J. Pan et al., "Radio-Frequency Interference Estimation using Equivalent Dipole-Moment Models and Decomposition Method Based on Reciprocity," IEEE Transactions on Electromagnetic Compatibility, vol. 58, no. 1, pp. 75-84, Institute of Electrical and Electronics Engineers (IEEE), Feb 2016.
The definitive version is available at https://doi.org/10.1109/TEMC.2015.2496210
Electrical and Computer Engineering
Center for High Performance Computing Research
Second Research Center/Lab
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Antennas; Digital radio; Dipole moment; Electromagnetic fields; Frequency estimation; Partial discharges; Printed circuit boards; Printed circuits; Radio interference; Radio waves; Decomposition methods; Early design stages; Electronic product; Full-wave simulations; Radiating antennas; Radio frequency interference; Reciprocity theory; Simulations and measurements; Inverse problems; equivalent dipole-moment models
International Standard Serial Number (ISSN)
Article - Journal
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