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http://dx.doi.org/10.5515/KJKIEES.2011.22.3.336

Study on the Radiation Pattern of Radiated Emission above 1 GHz  

Chung, Yeon-Choon (Department of Electronics, Seokyeong University)
Lee, Soon-Yong (Department of Electronic & Communications Engineering, Hanyang University)
Kwun, Suk-Tai (E&R Tech)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.22, no.3, 2011 , pp. 336-344 More about this Journal
Abstract
The purpose of this study is to analyze the radiation-pattern characteristics above 1 GHz for the electromagnetic wave radiated from multi-slot such as ventilations, etc. on the enclosure of an EUT and so to make recommendations for suitable test methods. An experimental EUT was formed by putting a comb-generator at the center of a rectangular enclosure with 4 slots, and its radiation pattern was analyzed in the frequency range of 1~6 GHz. As analysis results, multi-lobe appears above 2 GHz and the number of multi-lobes is growing as the frequency increases. And real radiated-emission measurements were performed for the experimental EUT by scanning a receiving antenna in the height of 1~4 m and tilting toward maximum radiation, as well as setting the height of a receiving antenna to the central position of the EUT which is prescribed at the present standards. The measured results are +12.8 dB in the scanning and +16.4 in the scanning and tilting compared with the present standard test method. Therefore, the latter must be revised in order to consider the radiation pattern above 1 GHz.
Keywords
Radiated Emission; Above 1 GHz; Beam-Steering; Receiving Antenna Tilting;
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  • Reference
1 CISPR 22, Information Technology Equipment -Radio Disturbance Characteristics - Limits and Methods of Measurement, CISPR, Sep. 2008.
2 R. E. Collin, Field Theory of Guided Waves, 2nd Ed. Piscataway, NJ: Wiley-IEEE Press, 1991.
3 http://www.yorkemc.co.uk/instrumentation/cge02/
4 Kraus, Fleisch, Electromagnetics with Applications, 5th Ed., McGraw-Hill, 1999.
5 Constantine A. Balanis, Antenna Theory, 3th Ed., Wiley-Interscience, 2005.
6 CISPR 16-2-3, Methods of Measurement of Disturbances and Immunity - Radiated Disturbance Measurements, CISPR, Jul. 2006.