采用Smith圆图对尖晶石镍铁氧体的输入阻抗进行表征，并根据传输线理论计算不同涂层厚度下尖晶石镍铁氧体的反射率。结果表明，Smith圆图中输入阻抗越接近点（α=1，β=0），阻抗匹配性越好，反射率也越小。这为基于Smith圆图的吸波材料阻抗匹配设计应用奠定了基础。
The input impedance of spinel nickel ferrite was characterized by Smith circle diagram,and the reflectivity of spinel nickel ferrite with different coating thicknesses was calculated by transmission line theory. The results show that the closer the input impedance in the Smith circle diagram is to the point(α=1,β=0),the better the impedance matching is,and the smaller the reflectance is,which lays the foundation for application of Smith circle diagram in impedance matching design of absorbing materials.
参考文献
| [1] | 王振军,李克智,王闯,解静.羰基铁粉-碳纤维水泥基复合材料的吸波性能[J].硅酸盐学报,2011(01):69-74. |
| [2] | 丁世敬,葛德彪,黄刘宏.电磁吸波材料中的阻抗匹配条件[J].电波科学学报,2009(06):1104-1108. |
| [3] | Harold Sobol;Kiyo Tomiyasu .Milestones of Microwaves[J].IEEE Transactions on Microwave Theory and Techniques,2002(3):594-611. |
| [4] | Zelley C;Nanotech Semicond,Bristol .A spherical representa-tion of the Smith chart[J].Microwave Magazine IEEE,2007,8(03):60-66. |
| [5] | 崔荣振 .羰基铁微粉复合物微波吸收性能的优化[D].兰州:兰州大学,2011. |
| [6] | 黄耀清,袁杰,宋维力,温博,房晓勇,曹茂盛.Microwave Absorbing Materials： Solutions for Real Functions under Ideal Conditions of Microwave Absorption[J].中国物理快报（英文版）,2010(02):273-276. |
| [7] | 陈雪刚,叶瑛,程继鹏.电磁波吸收材料的研究进展[J].无机材料学报,2011(05):449-457. |
| [8] | 甘治平,官建国,王维.单层均匀吸波材料电磁参数的匹配研究[J].航空材料学报,2002(02):37-40,61. |
| [9] | 陈鑫,刘祥萱,刘渊.占空比和羰基铁含量对镍铁氧体@羰基铁核壳粉体吸波性能的影响[J].电子元件与材料,2013(02):21-25. |
| [10] | Li Z W;Lin G Q;Kong L B .Microwave reflection characteris-tics of Co2Z barium ferritecomposites with various volume con-centration[J].IEEE Transactions on Magnetics,2008,44(10):2255-2261. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%