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Temperature distribution analysis of /spl lambda//4 type EM-absorber using resistive film

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4 Author(s)
Watanabe, S. ; Dept. of Electr. Eng. & Electron., Aoyama Gakuin Univ., Tokyo ; Iino, K. ; Saito, K. ; Hashimoto, O.

This paper describes the temperature distribution analysis of lambda/4 type EM-absorber using resistive film when high electric power is injected to the absorber. For the temperature analysis, FDTD method is used to analyze electromagnetics and SIMPLE (semi-implicit method for pressure linked equations) method is used for calculation of heat transport and air convection enabling to analyze local heat transfer more strictly than heat transport equation (HTE) method which is the traditional heat transport analysis method. And we propose four types of wave absorbers to analyze these temperature distribution on the resistive film to find the best type with least temperature rise. As a result, when glass and metal plates are used for spacer and reflector, respectively, the absorber proved to be the best one from a view point of temperature descent. And it is shown that the temperature range does not cause the change of absorbing characteristics in the analysis but the temperature rise exceeds 160 degC, the characteristics may change

Published in:

Electromagnetic Compatibility, 2005. EMC 2005. 2005 International Symposium on  (Volume:1 )

Date of Conference:

12-12 Aug. 2005