High-frequency electromagnetic field coupling to long terminated lines

• Published in: IEEE transactions on electromagnetic compatibility Vol. 43; no. 2; pp. 117 - 129
• Main Authors: Tkatchenko, S., Rachidi, F., Ianoz, M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-05-2001; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Approximation; Circuit properties; Electric, optical and optoelectronic circuits; Electromagnetic compatibility; Electromagnetic fields; Electronics; Exact sciences and technology; Exact solutions; Information, signal and communications theory; Joining; Mathematical analysis; Mathematical models; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Telecommunications and information theory; Terminals; Transmission lines; Waveguides, transmission lines, striplines; Plane wave; Induced current; Electromagnetic compatibility; Transmission line; High frequency; Electromagnetic coupling
• ISSN: 0018-9375; 1558-187X
• DOI: 10.1109/15.925531

We present a theory for the EMC problem of electromagnetic field coupling to a long line with arbitrary terminations. The theory is applicable for the high-frequency plane wave electromagnetic field excitations, when the transmission line approximation is no longer valid. Analytical expressions are derived for the induced current along the line, and at the two-line terminals. The coefficients of these expressions are determined using a procedure based on the exact solutions of the integral equation for two similar line configurations, but having a significantly shorter length. The method is, therefore, particularly efficient when considering the electromagnetic field coupling to very long lines. The advantage of the proposed approach is that, in contrast with transmission line approximation, it takes into account high-frequency radiation effects. Furthermore, it allows a considerable reduction in computation time and storage requirements with respect to conventional numerical solutions based on the thin-wire approximation.