Summary
International Symposium on Electromagnetic Compatibility
2009
Session Number:24P1
Session:
Number:24P1-2
Tunable EM-wave Absorber Below 1 GHz Using Diode Grid and Its Evaluation by Large Stripline
R. Miyazaki, A. Nishikata, T. Aoyagi, Y. Kotsuka,
pp.729-732
Publication Date:2009/7/20
Online ISSN:2188-5079
Summary:
An electrically-controllable EM-wave absorber panel is developed which employs a simple structure of planar diode grids as a metamaterial layer. To evaluate the reflectivity of the absorber panel that is smaller than the wavelength, we developed a measurement system with a large stripline that is usable for frequencies lower than 700 MHz. The absorber panel is shown to achieve reflectivity of less than -10 dB, and the absorbing frequency is tunable between 500 MHz and 600 MHz by varying the reverse voltage bias.