Analytical study on variation of temperature and absorption characteristics of single‐layer radiowave absorber by irradiation electric power | Zendy

Kato Masanori | Zendy; Suga Ryosuke | Zendy; Hashimoto Osamu | Zendy; Nakamura Takayuki | Zendy; Wada Kouji | Zendy

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Analytical study on variation of temperature and absorption characteristics of single‐layer radiowave absorber by irradiation electric power

Author(s) -

Kato Masanori,

Suga Ryosuke,

Hashimoto Osamu,

Nakamura Takayuki,

Wada Kouji

Publication year - 2004

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.20027

Subject(s) - irradiation , materials science , permittivity , microwave , absorption (acoustics) , finite difference time domain method , relative permittivity , power (physics) , optics , optoelectronics , composite material , dielectric , physics , engineering , telecommunications , thermodynamics , nuclear physics

In this study, the relative complex permittivity of an epoxy resinous material is measured under changes in temperature. The temperature distribution of a single‐layer radiowave absorber is analyzed using the FDTD‐HTE method with measured relative complex permittivity, and then the irradiation electric power's temperature change inside the absorber is calculated. As a result, it is observed that the temperature inside the absorber increases rapidly, so that the irradiation electric power is high, and that the temperature of the absorber increases to 170°C after the irradiation during 120 min under the irradiation electric power with 1000 W/m 2 . It is found that the absorption characteristics of the absorber vary rapidly when they are calculated using the abovementioned analytical result. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 3–5, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20027

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