Academic Journal
TE-polarized leaky-wave beam launchers: generation of Bessel and Bessel–Gauss beams
| العنوان: | TE-polarized leaky-wave beam launchers: generation of Bessel and Bessel–Gauss beams |
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| المؤلفون: | Negri, E., Fuscaldo, W., González-Ovejero, D., Burghignoli, P., Galli, A. |
| المساهمون: | Negri, E., Fuscaldo, W., González-Ovejero, D., Burghignoli, P., Galli, A. |
| بيانات النشر: | AIP Publishing |
| سنة النشر: | 2024 |
| المجموعة: | Sapienza Università di Roma: CINECA IRIS |
| مصطلحات موضوعية: | Bessel beam, terahertz radiation, antenna, Gaussian beam |
| الوصف: | The generation of focused beams in the millimeter- and submillimeter-wave ranges, with transverse-electric (TE) polarization, is investigated in the radiative near-field region. The desired field distribution is achieved through a leaky-wave beam launcher consisting of a grounded dielectric slab with an annular strip grating on top excited by a circular slot on the bottom ground plane. The latter is fed by a Marié transducer, which converts the input, fundamental TE10 mode of a standard rectangular waveguide into the higher-order TE01 mode propagating in the circular waveguide connected to the device. The generation of TE-polarized diffraction-limited Bessel and Bessel–Gauss distributions is achieved by suitably synthesizing the annular strip grating. Simulated results are in excellent agreement with those predicted by leaky-wave analysis providing a proof-of-concept for the generation of TE-polarized Bessel and Bessel–Gauss beams at 300 GHz with a beam size of 1.7 and 1.9 mm up to the nondiffractive range of about 25 and 15 mm from an aperture plane with radius of 12.75 mm, respectively. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | volume:125; issue:181703; numberofpages:6; journal:APPLIED PHYSICS LETTERS; https://hdl.handle.net/11573/1724359 |
| DOI: | 10.1063/5.0234371 |
| الاتاحة: | https://hdl.handle.net/11573/1724359 https://doi.org/10.1063/5.0234371 |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.2CC6C517 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/5.0234371 |
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