Abstract
The beam mode expansion method is adapted to analyze the radiation of a corrugated conical horn without any restriction due to the balanced hybrid conditions, assuming an hybrid modal (HE11)feed. The fields are first calculated on the horn’s aperture and then transformed in a modal expansion. The approximations are discussed and illustrated with computer simulations. Achieved results are finally presented to show the interest of this method.
Résumé
La méthodebme (beam mode expansion) est adaptée à l’analyse du rayonnement d’un cornet cylindrique rainure hors régime d’équilibre hybride, dans l’hypothèse d’une excitation par le mode hybridehe 11. Le champ sur l’ouverture du cornet pour obtenir une expression exploitable, dans le cas général, est calculé ainsi que le rayonnement dans un formalisme vectoriel multimodal. Les approximations faites dans ces développements sont justifiées a posteriori sur des résultats de simulation. Enfin les résultats que l’on peut attendre de cette nouvelle analyse sont exposés.
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Lemaître, F., Soum, G., Pascal, O. et al. Corrugated horn radiation analysis using vectorial Gaussian beam expansion out of the balanced hybrid conditions. Ann. Télécommun. 52, 329–338 (1997). https://doi.org/10.1007/BF02996075
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DOI: https://doi.org/10.1007/BF02996075
Key words
- Horn antenna
- Corrugated waveguide
- Gaussian beam
- Series expansion
- Hybrid mode
- Multimode waveguide
- Bessel function.