Microwave studies on strontium ferrite based absorbers

被引：43

作者：

Verma, A ^{[1
]}

Mendiratta, RG ^{[1
]}

Goel, TC ^{[1
]}

Dube, DC ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, New Delhi 110016, India

来源：

JOURNAL OF ELECTROCERAMICS | 2002年 / 8卷 / 03期

关键词：

microwave; strontium ferrite composites; absorbers; dielectric constant; permeability; electrical thickness;

D O I：

10.1023/A:1020841915616

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Single layer microwave absorbers based on strontium ferrite-epoxy composites have been fabricated and their reflection loss characteristics studied in the X-band (8-12.4 GHz) of microwave frequencies. Permittivity (is an element of'(r) - j is an element of(r)") and permeability (mu'(r) - jmu(r)") of Co and Ti added strontium ferrite SrCoxTixFe12-2xO19 (x = 0.1 to 0.9 in steps of 0.2), have been measured. Thickness of the absorber is an important criterion influencing the absorption characteristics. Composites of 3 mm thickness are found to absorb over a reasonable range of X-band frequencies. A minimum reflection loss of -36.5 dB is observed for the composite with x = 0.3.

引用

页码：203 / 208

页数：6

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