Title :
A proposal of multi-functioned EM-wave absorbers
Author :
Kotsuka, Youji ; Komazawa, Yoshihiko
Author_Institution :
Fac. of Eng., Tokai Univ., Kanagawa, Japan
Abstract :
A multi-functioned EM-wave absorbers are investigated. As one of these fundamental concepts, light reflecting, light emitting and EM-wave radiating type absorbers have been proposed. First, the methods of controlling the matching frequency are investigated as a key technology to realize these kinds of EM-absorber. Simple methods for controlling the matching frequency using magnetized ferrite, ferrite combined with other materials, and ferrite with small holes are summarized. In particular, the detailed matching characteristics of ferrite with small holes are investigated theoretically and experimentally. Secondly, as examples of multi-functional absorbers, the matching characteristics of the light reflecting and the light emitting absorbers at frequencies of 2.45 GHz and 5.8 GHz are clarified
Keywords :
electromagnetic wave absorption; ferrites; frequency control; light reflection; 2.45 GHz; 5.8 GHz; SHF; UHF; light emitting absorbers; light reflecting absorbers; magnetized ferrite; matching frequency control; multi-functioned EM-wave absorbers; small holes; Conducting materials; Electromagnetic compatibility; Ferrites; Frequency; Local area networks; Magnetic analysis; Magnetic materials; Proposals; Radar countermeasures; Roads;
Conference_Titel :
Electromagnetic Compatibility, 1999 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-9980748-4-9
DOI :
10.1109/ELMAGC.1999.801374
