An efficient characterization approach of radiated electromagnetic field analysis for PCBs
Radiation characterization is composed of radiation mechanism diagnosis and radiated electromagnetic (EM) field estimation. Based on not only the internal relationship between radiated EM field and wave impedance, but also the inner relationship between wave impedance and measurement distance, a new near-field method is proposed for diagnosis of radiation mechanism, including common mode (CM) and differential mode (DM). Furthermore, by employing radio frequency (RF) circuit parameter measurement, a simple approach is presented for estimation of radiated EM field generated by RF current in the cable. The experimental research shows that radiated noises decrease obviously after circuit improvement, meanwhile, the radiation mechanism is achieved by the near-field method; in addition, the results of RF circuit parameter measurement agree well with 3-m chamber measurement results. Therefore, the presented approach is efficient and effective.
EMC radiated EM field characterization PCB
Yan Wei Zhao Yang Luo Yong-chao Feng Zhi-ming Zhao Bo Rong Rong
School of Electrical & Automation Engineering, Nanjing Normal University, Nanjing 210042, China School of Electrical & Automation Engineering, Nanjing Normal University, Nanjing 210042, China Stat Jiangsu Metrology Institute of Science & Technology, Nanjing 210007, China
国际会议
The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)
徐州
英文
1-6
2009-10-18（万方平台首次上网日期，不代表论文的发表时间）