A new concept for functional electromagnetic cell material for microwave and millimeter use

Author

Kotsuda, Y. ; Amano, Mitsuhiro

Author_Institution

Dept. of Commun. Eng., Tokai Univ., Kanagawa, Japan

Volume

1

fYear

2004

fDate

6-11 June 2004

Firstpage

253

Abstract

Proposed is a new concept for functional electromagnetic cell material (EMCM) for microwave and millimeter wave, capable of responding to an electromagnetic field. The fundamental concept of EMCM is described. This EMCM is capable of realizing various kinds of characteristics, including an anisotropic characteristic by switching on and off an active micro-circuit element. To examine the capabilities of this new material, FDTD analysis for the model of a microwave absorber with three dimensional active circuits is conducted. The microwave absorber is offered as concrete example of EMCM. Good dynamic matching characteristics are obtained around 1.5GHz. If the EMCM is embedded into certain kinds of material, the original material constant can be changed equivalently. This characteristic is verified experimentally, using a rubber ferrite absorber.

Keywords

electromagnetic wave absorption; ferrites; finite difference time-domain analysis; micromagnetics; microwave materials; 3D active circuits; FDTD analysis; active microcircuit element; anisotropic characteristic; dynamic matching characteristics; electromagnetic wave absorber; functional electromagnetic cell material; material constant; microwave absorber; rubber ferrite absorber; Active circuits; Anisotropic magnetoresistance; Building materials; Concrete; Conducting materials; Electromagnetic fields; Electromagnetic scattering; Finite difference methods; Rubber; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2004 IEEE MTT-S International

ISSN

0149-645X

Print_ISBN

0-7803-8331-1

Type

conf

DOI

10.1109/MWSYM.2004.1335860

Filename

1335860