Macroscopic visualization of a radiated emission source using cylindrically scanned electric field amplitude data
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概要
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In order to efficiently mitigate emissions radiated from electrical equipment, emission source visualization methods need to be studied. In this paper, we propose a new macroscopic visualization method based on an optimization process which uses only cylindrically-scanned electric field amplitude data from an EMI test facility as specified by CISPR, and so does not need a special measurement system. The presented method divides the visualization space into three-dimensional rectangular cells, and estimated current values through the optimization process are sorted into each corresponding cell. By displaying the summed value of every cell, the emission source can be visualized. For this study. the spatial resolution was evaluated by computer simulation, with a result of around 0.2 m using a cell size of 0.1 m. With subsequent experimental verification using a comb generator in a semi-anechoic chamber, the visualization deviation was found to be less than 0.1 m in a frequency range of 100 MHz to 800 MHz. When two spherical dipole antennas were used. the deviation was less than 0.15 m. Finally, visualization results from a facsimile unit and a PC as real EUTs were shown and basic applicability of this method demonstrated.
- 社団法人電子情報通信学会の論文
- 2006-07-01
著者
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KUWABARA Nobuo
Kyusyu Institute of Technology
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Kuwabara Nobuo
Kyushu Institute Of Technology
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Kuwabara Nobuo
Department Of Electrical Engineering Kyushu Institute Of Technology
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ISHIDA Yasuhiro
Fukuoka Industrial Technology Center
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KAWABATA Masato
Fukuoka Industrial Technology Center
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Kuwabara Nobuo
Dept. Of Electrical Engineering And Electronics Kyushu Institute Of Technology
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Kuwabara Nobuo
Kyushu Inst. Technol. Kitakyushu‐shi Jpn
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Kuwabara Nobuo
Kyushu Institude Of Technology
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