The impact of line integrals in full-wave modeling of coax-fed antennas
(2026) Eucap 2026 — Location: Dublin, Ireland (19.April.2026)
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- Abstract
- Special attention is required when applying the MoM to coaxial-fed printed antennas. First, the junction between vertical and horizontal conductors must be carefully considered. In this paper, we realize this transition thanks to broken rooftops which have the merit of being elementary basis functions, thus allowing a fine representation of the feeder structure. In this case, an additional line of charge distributions appear due to the difference between scalar potentials associated to vertical and horizontal conductors. The impact of these lines of charges is studied in this paper. Second, the feeding technique needs to be carefully selected. Here, we compare the accuracy of the delta-gap excitation to the one based on an impressed magnetic frill of current. The importance of both the line of charges and the technique of excitation is highlighted by confronting our results against the ones obtained from the CST software.
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Citations
Cavillot, J., & Craeye, C. (2026). The impact of line integrals in full-wave modeling of coax-fed antennas. Eucap 2026, Dublin, Ireland. https://hdl.handle.net/2078.5/278326