Application of Ferrite to Electromagnetic Wave Absorber and its Characteristics

作者：Yoshiyuki Naito, K. Suetake · 发表于：IEEE Transactions on Microwave Theory and Techniques · 年份：1971 · DOI：10.1109/tmtt.1971.1127446 · 被引用次数：901 · 研究领域：Electromagnetic wave absorption materials、Electromagnetic Compatibility and Measurements、Electromagnetic Effects on Materials

An electromagnetic wave absorber utilizing ferrite or rubber ferrite composed of ferrite powder and rubber is described. In our investigation, the existence of a matching frequency f/sub m/ and a matching thickness t/sub m/ has been found. The terms f/sub m/ and t/sub m/ mean that the ferrite which is backed with a conducting plate can be a perfect absorber only under the conditions that the frequency of the incident wave is f/sub m/ and that the thickness of the ferrite is t/sub m/.Each ferrite has two matching frequencies f/sub m1/, f/sub m2/, (f/sub m1