Measurement validation for radio-frequency interference estimation by reciprocity theorem

L. Li, Jingnan Pan, C. Hwang, Gyuyeong Cho, Hark-Byeong Park, Yaojiang Zhang, J. Fan
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引用次数: 10

Abstract

This paper presents the measurement validation of reciprocity theorem method for near-field coupling estimation. The overall problem is decomposed into two parts, the first part is called forward problem, and the second part is called the reverse problem. For forward problem, the noise source IC is modelled by physics-based dipole moment model with data obtained from a near-field scanning plane, then the tangential E and H fields on a Huygens's box enclosing the victim antenna are calculated by analytical expression. In reverse problem, the victim RF antenna is modelled in full-wave simulation tool and the tangential E and H field are obtained by simulation. With tangential E and H field obtained in forward problem and reverse problem, the coupled noise power is then estimated by reciprocity theorem. The estimated noise coupling power is compared with measured power at the victim antenna port with IC excited. The difference is within 5dB which is acceptable for engineering practice.
基于互易定理的射频干扰估计的测量验证
本文给出了互易定理方法在近场耦合估计中的测量验证。将整体问题分解为两部分,第一部分称为正向问题,第二部分称为逆向问题。对于正演问题,利用近场扫描平面的数据,采用基于物理的偶极矩模型对噪声源集成电路进行建模,然后用解析表达式计算出围在受损伤天线周围的惠更斯盒上的切向E场和H场。在反问题中,利用全波仿真工具对受害射频天线进行建模,仿真得到切向E场和H场。利用正问题和反问题的切向E和H场,利用互易定理估计耦合噪声功率。在集成电路激励下,将估计的噪声耦合功率与受害天线端口的实测功率进行比较。差值在5dB以内,在工程实践中是可以接受的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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