Analyzing Bandwidth on the Microwave Absorber by the Interface Reflection Model

Metallic flaky sendust particles are prepared for use as fillers in electromagnetic attenuation composites. We report the interface reflection model to divide the broad bandwidth into electromagnetic loss and quarter-wavelength （λ/4） cancelation. Combining with the face reflection calculation, we id...

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Bibliographic Details
Published inChinese physics letters Vol. 33; no. 2; pp. 118 - 121
Main Author 乔亮 王涛 梅忠磊 李喜玲 隋文波 唐丽云 李发伸
Format Journal Article
LanguageEnglish
Published 01.02.2016
Subjects
1/4波长
复合材料
带宽
微波吸收剂
模型分析
电磁损耗
界面反射
硅铝微粒
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/33/2/027502

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Summary:Metallic flaky sendust particles are prepared for use as fillers in electromagnetic attenuation composites. We report the interface reflection model to divide the broad bandwidth into electromagnetic loss and quarter-wavelength （λ/4） cancelation. Combining with the face reflection calculation, we identify the electromagnetic loss originated from skin effect, which is used to explain over half of the absorbed energy in high frequency band. Most impor- tantly, the unique electromagnetic loss cannot generate the reflection loss （RL） peak. Using the phase relation of face reflection, we show evidence that the λ/4 cancelation is vital to generate the RL peak. The calculated energy loss agrees well with the experimental data and lays the foundation for further research.
Bibliography:11-1959/O4
Metallic flaky sendust particles are prepared for use as fillers in electromagnetic attenuation composites. We report the interface reflection model to divide the broad bandwidth into electromagnetic loss and quarter-wavelength （λ/4） cancelation. Combining with the face reflection calculation, we identify the electromagnetic loss originated from skin effect, which is used to explain over half of the absorbed energy in high frequency band. Most impor- tantly, the unique electromagnetic loss cannot generate the reflection loss （RL） peak. Using the phase relation of face reflection, we show evidence that the λ/4 cancelation is vital to generate the RL peak. The calculated energy loss agrees well with the experimental data and lays the foundation for further research.
Liang Qiao, Tao Wang, Zhong-Lei Mei, Xi-Ling Li, Wen-Bo Sui, Li-Yun Tang, Fa-Shen Li（ i Institute of Applied Magnetics, Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University, Lanzhou 730000 2School of lnformation Science and Engineering, Lanzhou University, Lanzhou 730000）
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/2/027502