کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8154634 | 1524802 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel approach for designing a thin and broadband microwave absorber in Ku band based on substituted M-hexaferrites
ترجمه فارسی عنوان
رویکرد جدید برای طراحی یک مایع جذب نازک و باند پهن در کو باند بر اساس مات هگزافرید جایگزین
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
چکیده انگلیسی
The design of novel microwave absorbers in the Ku band is still challenging. The aim of this work is to report the design of a new Ku absorber based on the combination of three M-hexaferrites with the formula of BaX0.3Y0.3Cr0.3Fe11.1O19 (XY=Co2+Zr4+, Zn2+Ti4+, Mn2+Ce4+), 15Â wt% of each in epoxy matrix. The results indicate the formation of a broadband absorber with a reflection loss (RL) lower than â10Â dB over the whole bandwidth 13.75-18Â GHz. It has three matching frequencies (14.2, 15.3 and 16.8Â GHz) with RL (â29.2, â21.5 and â24.7Â dB, respectively) at a matching thickness of only 2.5Â mm. This is to be compared with the RL of the absorbers based on 45Â wt% of each ferrite alone in epoxy matrix are (â15, â28.8 and â20Â dB, respectively) at matching frequency of (14.15, 13.55 and 16.5Â GHz) and a matching thickness of 4Â mm. This favorable performance resulting from combining the three ferrites within the absorber may be attributed to the enhanced exchange coupling interactions between the three powders of distinct magnetic characteristics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 419, 1 December 2016, Pages 62-67
Journal: Journal of Magnetism and Magnetic Materials - Volume 419, 1 December 2016, Pages 62-67
نویسندگان
Seyyed Salman Seyyed Afghahi, Mojtaba Jafarian, Yomen Atassi,