Title :
On the theoretical curves of site attenuations at frequencies below 80 MHz
Author :
Ki Chai Kim ; Yeon Choon Chung ; Nak Sam Chung
Author_Institution :
Korea Stand. Res. Inst., Taejon, South Korea
Abstract :
The site attenuations of open-area test site are calculated by the method of electromotive force, and the cause of a characteristic hump in the site attenuation curve below 80 MHz is explained. The deviation between the US Federal Communications Commission (FCC) site attenuations and the experimental results on an ideal open area test site at these frequencies was found to be due to the mutual coupling effects of the antennas under the FCC´s measurement conditions. Therefore, it is recommended that the theoretical site attenuation curves below 80 MHz given by FCC´s OET-55 measurement conditions be revised.<>
Keywords :
antennas; electromagnetic compatibility; electromagnetic wave absorption; electromagnetic wave scattering; electronic equipment testing; measurement standards; test facilities; EMC; US Federal Communications Commission; characteristic hump; electromotive force; mutual coupling effects; open-area test site; site attenuations; test facilities; Area measurement; Attenuation measurement; FCC; Frequency measurement; Geometry; Hydrogen; Mutual coupling; Open area test sites; Out of order; Polarization;
Conference_Titel :
Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on
Conference_Location :
Ottawa, Ontario, Canada
DOI :
10.1109/CPEM.1990.110088
