Roger A. Dalke, Patricia J. Raush, Frank H. Sanders, and Jeanne M. Ratzloff

Abstract: New lighting devices that emit radio frequencies are being developed for commercial use. Since such devices may interfere with communication systems that utilize the radio spectrum, it is essential that the emission characteristics be carefully analyzed. This report describes the spectral emission characteristics of a radio frequency (nominally 2.5 MHz) driven lighting device that is under development for commercial use in the U.S. A combination of near-field measurement techniques and a theoretical model were used to determine emitted field levels. This report presents the results of the measurements and details measurement and analysis methods used to determine the emissions spectrum. The results presented include the theoretical model of the radio frequency source that can be used to predict spectral emissions of arrays of such lighting devices.

Keywords: compact radio spectrum measurement system (CRSMS); data acquisition (DA); RF lighting device; spectral emissions; RF interference

Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

For questions or information on this or any other NTIA scientific publication, contact the ITS Publications Office at ITSinfo@ntia.gov or 303-497-3572.

Back to Search Results