Summary
2019 Joint International Symposium on Electromagnetic Compatibility and Asia-Pacific International Symposium on Electromagnetic Compatibility, Sapporo
2019
Session Number:FriAM1A
Session:
Number:FriAM1A.1
Accurate RFI Prediction of 3D Non-Planar Connector with Half Magnetic Dipole Pattern (I)
Ling Zhang, Qiaolei Huang, Xiangrui Su, Deepak Pai Hosadurga, Jagan Rajagopalan, Amit Gaikwad, Chulsoon Hwang, Jun Fan,
pp.-
Publication Date:2016/10/5
Online ISSN:2188-5079
DOI:10.34385/proc.58.FriAM1A.1
Summary:
In this paper, a dipole-moment based reciprocity method is applied to a consumer electronic device. The dipole moment is then used to predict radio-frequency interference (RFI) from a high-speed connector to two nearby RF antennas. The connector has a 3D structure with data pins vertically-oriented, for which the near H field pattern around the connector shows a half magnetic dipole pattern. This is different from typical complete dipole patterns over planar printed PCB (printed circuit board) structures. To tackle this problem, a magnetic dipole is placed in full-wave simulation with a similar connector structure. Using the reference near field data from simulation an equivalent magnetic dipole moment for the measured field is obtained. Further reciprocity theorem is applied to predict RFI based on the equivalent dipole magnitude and the antenna reverse H field. The predicted RFI shows a fairly good match with the measured RFI for both victim antennas.