New Measurement Method of Broadband Permittivity and Permeability of Non-Solid Materials in Small Quantity
New Measurement Method of Broadband Permittivity and Permeability of Non-Solid Materials in Small Quantity
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小批量非固体材料宽带介电常数和磁导率测量新方法
DOI：
10.1109/tmag.2018.2847457
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发表时间：
2018
影响因子：
2.1
通讯作者：
Hiroshi Osada
中科院分区：
文献类型：
--
作者：
Kenji Miura;Yudai Odagiri;Seiya Kubo;Tsukasa Umesaka;Daiki Suzue;Hiroshi Osada
我们提出了一种新的测量方法，用于同时评估粉末，液体或凝胶形式的少量材料的介电常数和渗透率。采用塑料环形壳体封装非固体待测材料，对整个壳体进行了同轴线分析。确定了壳体所需的MUT体积约为70 μL，并利用高频电路理论去除了塑件。结果表明，空气的相对介电常数和磁导率是恒定且接近理想的。采用该方法可以测量45 vol%以上磁粉在微波波段的磁导率。
We propose a new measurement method for the simultaneous evaluation of permittivity and permeability of small amount of materials in powder, liquid, or gel form. A plastic toroidal case was used to encapsulate non-solid material under test (MUT), and the whole case was subjected to coaxial line analysis. The volume of MUT required for the case was established as approximately 70 μL, and we removed the plastic parts using high-frequency circuit theory. As a result, constant and nearly ideal relative permittivity and permeability of air were confirmed. Measuring permeability at microwave band of magnetic powder above 45 vol% became possible using the proposed method.