金属材料吸波器吸波频率动态调节仿真
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摘要
对金属材料吸波器吸波频率进行动态调节,能够实现吸波器的精准控制,对吸波器吸波频率进行调节,需要分析吸波器的损耗衰减、阻抗匹配和吸收率,计算材料的反射系数。传统方法通过对等效输入阻抗进行计算,确定阻抗的匹配特性,但忽略了对损耗衰减的分析,导致吸波器的灵敏性差。提出一种金属材料吸波器吸波频率动态调节方法,通过分析吸波器的损耗衰减、阻抗匹配和吸收率,为金属材料吸波器吸波频率的调节提供依据;计算谐振器的等效电压、微波二极管的电阻能量损耗、微带介质能量损耗和介质损耗能量,根据计算结果得到吸波器的总能量损耗。在吸波器等效电压和能量损耗的基础上计算等效阻抗,并根据计算结果得到金属材料的反射系数,通过调节反射系数完成金属材料吸波器吸波频率的动态调节。仿真结果表明,所提方法的灵敏性高、稳定性高。
The dynamic regulation of wave absorbing frequency of metal material absorber can realize the precise control of absorber. The traditional method can determine the matching characteristic of impedance, but ignores the analysis of attrition and attenuation, leading to the low sensitivity of absorber. In this article, we focus on a method for dynamically adjusting wave absorption frequency of metal material absorber. Firstly, the analysis of the attrition and attenuation, the impedance matching and the absorption rate provides the basis for regulating the wave absorption frequency of metal material absorber, and then we calculated the equivalent voltage of resonator, the resistance energy loss of microwave diode, the energy loss of micro-strip medium and the energy loss of medium. The total energy loss of absorber was obtained according to the calculation result. Moreover, the equivalent impedance was calculated based on the equivalent voltage and energy loss of absorber, and the reflection coefficient of metal material was obtained based on calculation result. Finally, the dynamic adjustment of wave absorbing frequency of the metal material absorber was completed by regulating the reflection coefficient. Simulation results prove that the proposed method has high sensitivity and high stability.
The dynamic regulation of wave absorbing frequency of metal material absorber can realize the precise control of absorber. The traditional method can determine the matching characteristic of impedance, but ignores the analysis of attrition and attenuation, leading to the low sensitivity of absorber. In this article, we focus on a method for dynamically adjusting wave absorption frequency of metal material absorber. Firstly, the analysis of the attrition and attenuation, the impedance matching and the absorption rate provides the basis for regulating the wave absorption frequency of metal material absorber, and then we calculated the equivalent voltage of resonator, the resistance energy loss of microwave diode, the energy loss of micro-strip medium and the energy loss of medium. The total energy loss of absorber was obtained according to the calculation result. Moreover, the equivalent impedance was calculated based on the equivalent voltage and energy loss of absorber, and the reflection coefficient of metal material was obtained based on calculation result. Finally, the dynamic adjustment of wave absorbing frequency of the metal material absorber was completed by regulating the reflection coefficient. Simulation results prove that the proposed method has high sensitivity and high stability.
引文
[1] 郝允志,周黔.动态频率测量的滞后误差分析及改进方法[J].仪器仪表学报,2016,37(1):75-82.
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[7] 于榭彬,宋耀良,范事成.基于超材料的宽带高吸收率吸波器研究[J].电子技术应用,2017,43(12):89-91.
[8] 吴麟.基于扰动观测器的永磁同步电机复合预测控制[J].计算机仿真,2017,34(1):356-359.
[9] 张晗,等.可调谐超材料吸波体的研究现状和发展趋势[J].功能材料,2018,49(2):2035-2042.
[10] 杨竞帆,等.太赫兹及红外吸波超材料研究进展[J].红外技术,2017,39(4):323-328.
[2] 顾钰,等.基于石墨烯结合亚波长金属结构的太赫兹宽带动态吸收器[J].光电工程,2016,43(1):60-64.
[3] 陈哲耕,等.螺旋环超材料太赫兹吸波器的响应原理及特性[J].红外与毫米波学报,2017,36(3):321-329.
[4] 白正元,姜雄伟,张龙.超薄电磁屏蔽光窗超材料吸波器[J].光学学报,2017,37(8):244-252.
[5] 梁艳梅,黄小忠.一种极化无关的多频带超材料吸波体的仿真与实验研究[J].材料导报,2016,30(S2):156-159.
[6] 刘凌云,张政军,刘力鑫.基于集总电阻的宽频带超材料吸波器研究[J].微波学报,2016,32(5):50-54.
[7] 于榭彬,宋耀良,范事成.基于超材料的宽带高吸收率吸波器研究[J].电子技术应用,2017,43(12):89-91.
[8] 吴麟.基于扰动观测器的永磁同步电机复合预测控制[J].计算机仿真,2017,34(1):356-359.
[9] 张晗,等.可调谐超材料吸波体的研究现状和发展趋势[J].功能材料,2018,49(2):2035-2042.
[10] 杨竞帆,等.太赫兹及红外吸波超材料研究进展[J].红外技术,2017,39(4):323-328.