A Transfer Function based Calculation Method for Radio Frequency Interference
A transfer function based calculation method is proposed to estimate radio frequency interference (RFI) problems. The closed-form equations are analytically derived from Maxwell's equations and the reciprocity theorem. The derived equations can clearly decompose the RFI problem into two parts: the noise source and the coupling transfer function to the antenna. Based on derivations, a transfer function concept is proposed to quantify the coupling coefficient from each unit dipole moment to the victim antenna. The transfer functions can be easily obtained from S-parameter measurements. The proposed method is validated through numeric simulations and real cellphone experiments. Engineering insights drawn from the method are also discussed. Overall, the proposed method is accurate, fast, and can provide physical insights for practical designs.
Q. Huang et al., "A Transfer Function based Calculation Method for Radio Frequency Interference," IEEE Transactions on Electromagnetic Compatibility, vol. 61, no. 4, pp. 1280-1288, Institute of Electrical and Electronics Engineers (IEEE), Aug 2019.
The definitive version is available at https://doi.org/10.1109/TEMC.2019.2912361
IEEE Symposium on Electromagnetic Compatibility, Signal and Power Integrity (2018: Jul-Aug, Singapore and Long Beach, CA)
Electrical and Computer Engineering
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
Antenna; Dipole Moment Model; Liquid Crystal Display (LCD); Mobile Phone; Radio Frequency (RFI); Reciprocity; Transfer Function
International Standard Serial Number (ISSN)
Article - Journal
© 2019 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 Aug 2019