基于磁偶极子阵列的印制电路板干扰源等效建模方法  

Equivalent modeling method of printed circuit board interference source based on magnetic dipole array

作　　者：曹钟[1] 杜平安[1] 聂宝林[1] 任丹[1] 张其道 

机构地区：[1]电子科技大学机械电子工程学院,成都611731

出　　处：《物理学报》2014年第12期161-167,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51175068)资助的课题~~

摘　　要：针对电子设备整机电磁兼容分析的需求,提出利用磁偶极子阵列对印制电路板干扰源的电磁辐射特性进行等效建模的方法.根据电磁场边值问题的特点,将辐射源和影响辐射的结构分开建模,即对真实电磁辐射源进行等效建模,并单独处理结构对辐射的影响.介绍了等效建模的基本思想,推导了等效磁偶极子阵列的确定方法,并使用贴片天线对建模方法进行了验证.结果表明,等效方法的模型复杂度、建模时间和计算资源需求大幅度减小.In view of the need of the electromagnetic compatibility analysis in the design process of the electronic equipment, an equivalent method of modeling the characteristics of electromagnetic radiation from printed circuit board interference source is proposed by using magnetic dipole array. According to the characteristics of the electromagnetic boundary value problems, the radiating source and the structures affecting the radiation are modeled separately. At first, the actual source is modeled in detail. Then the effect of surrounding structures on the overall radiation is incorporated into the model. Moreover, the basic ideas of equivalent modeling are introduced, and the derivation of the formulas to obtain the magnetic dipole array is given. Finally, a patch antenna is used to demonstrate the validity of the method. The results show that the equivalent modeling method significantly reduces the complexity of the model, the modeling time, and the computational burden.

关 键 词：等效建模 磁偶极子阵列 电磁兼容 印制电路板 

分 类 号：TN41[电子电信—微电子学与固体电子学]