Electromagnetic jet produced with loaded waveguide ended by an optimized multi-rectangular sections tip

Previous works have demonstrated that a parallel plate waveguide, equipped at the end with a tip, can be used to initiate an "electromagnetic jet (Ej)" (this name generalizes the photonic jet (Pj) phenomenon regardless of the wavelength). In addition to being easy to manufacture, a rectang...

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Bibliographic Details
Published in:Journal of electromagnetic waves and applications 2023-12, Vol.37 (18), p.1587-1596
Main Authors: Hyani, Hishem, Sauviac, Bruno, Granet, Gérard, Bayard, Bernard, Robert, Stéphane, Edee, Kofi
Format: Article
Language:English
Subjects:
electromagnetic jet
Electromagnetism
Engineering Sciences
full width at half maximum (fwhm) properties
loaded waveguide
microwave
Modal method
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Summary:Previous works have demonstrated that a parallel plate waveguide, equipped at the end with a tip, can be used to initiate an "electromagnetic jet (Ej)" (this name generalizes the photonic jet (Pj) phenomenon regardless of the wavelength). In addition to being easy to manufacture, a rectangular shape improves energy concentration, however concurrently the full-width at half maximum (FWHM) is slightly degraded. This article aims to introduce tips with multi-rectangular sections reducing the drawbacks previously mentioned. This article proposes the use of Aperiodic Polynomial Modal Method (A-PMM) as an efficient yet robust method to model and optimize an outgoing Ej, equipped with this kind of dielectric tips. Thus, a three rectangular sections tip can improve energy concentration and can reduce the FWHM beyond the diffraction limit compared to a single section tip.
ISSN:0920-5071
1569-3937
DOI:10.1080/09205071.2023.2262984