A comparative analysis of Bessel and Gaussian beams beyond the paraxial approximation

Fuscaldo, Walter; Burghignoli, Paolo; Galli, Alessandro

doi:10.1016/j.ijleo.2021.166834

Cited by 4 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For a Bessel beam polarized along the y-axis, the y-direction polarization vector (7) is Substituted into (9),…”

Section: The Scattering Of Bessel Beams By Fog Particlesmentioning

confidence: 99%

See 1 more Smart Citation

Multiple scattering of Bessel beams propagating in advection fog and radiation fog

Chen,

Zhang,

et al. 2024

Front. Phys.

View full text Add to dashboard Cite

The Bessel beams scattering of the fog particles were calculated by using the plane beams angle spectrum expansion method, and the effects of the topological charge and the half-conic angle of the Bessel beam on the differential scattering cross-section were analyzed by numerical calculation. Based on the scattering results of a single fog particle by a Bessel beam, by Monte Carlo method, the propagation characteristics of the Bessel beam in fogs with different visibility are simulated, and the effects of the wavelength, topological charge and semi-conic angle of the Bessel beam on transmissivity and reflectivity are analyzed. The studies show the self-healing ability of the Bessel beams, and the propagation distance of the Bessel beam is longer than that of the plane beams in fogs.

show abstract

“…For a Bessel beam polarized along the y-axis, the y-direction polarization vector (7) is Substituted into (9),…”

Section: The Scattering Of Bessel Beams By Fog Particlesmentioning

confidence: 99%

“…This theory predicts higher-order non-vortex Bessel beams. In 2021, Fuscaldo et al [7] compared the characteristics of Gaussian beams and Bessel beams in terms of application environment, and concluded that for the ability of beams transmitting over the longest distance, Bessel beams are superior to Gaussian beams.…”

Section: Introductionmentioning

confidence: 99%

Multiple scattering of Bessel beams propagating in advection fog and radiation fog

Chen,

Zhang,

et al. 2024

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…with the capability to reconstruct themselves after an obstacle [8]. In case of a low number of lobes, Bessel beams can also be preferred to the more localized Gaussian beams thanks to their limited-diffraction behavior, i.e., their ability to maintain the transverse intensity beam distribution almost constant during the propagation [9].…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Beam Focusing through Resonant Bessel-Beam Launchers for Millimeter-Wave WPT Applications

Negri

Benassi

Fuscaldo

et al. 2023

2023 17th European Conference on Antennas and Propagation (EuCAP)

Self Cite

View full text Add to dashboard Cite

Resonant Bessel-beam launchers have recently gained much attention due to their capability to radiate focused beams by means of a compact and low-cost devices at microwave and/or millimeter waves. Most realizations consider only the use of TM-polarized beams, whereas only few works deal with the TE case. Here, we present an original workflow based on leakywave theory for the design and performance analysis of both kinds of launchers in wireless power transfer (WPT) scenarios. Simple analytical formulas are provided and validated with both numerical and full-wave methods for different case studies. The results obtained here offer considerable insight into the WPT performance of such devices.

show abstract

An efficient and accurate semi-analytical matching technique for waveguide-fed antennas

Negri,

Fuscaldo,

Tofani

et al. 2024

Sci Rep

View full text Add to dashboard Cite

Several RF and microwave radiating devices, such as horn antennas, Fabry–Perot cavity antennas, and aperture-fed focusing devices, are excited through rectangular waveguides. The impedance matching of the overall system (from the waveguide feed to the radiating aperture) is a task of crucial importance that is often addressed by means of brute-force parameter-sweep full-wave analyses or blind optimization algorithms. In both cases, a significant amount of memory and time resources are required. For this purpose, we propose here a simple, yet effective solution, which only requires a single full-wave simulation and a semi-analytical procedure. The former is used to retrieve the antenna input impedance at the end of the waveguide port excitation. The semi-analytical procedure consists in a transmission-line equivalent circuit that models two waveguide discontinuities (namely two capacitive irises) within the waveguide section, whose position and geometric features are finely tuned to obtain a satisfactory impedance matching around the working frequency. The proposed method is shown to be effective in diverse and attractive application-oriented contexts, from the impedance matching of a Fabry–Perot cavity antenna to that of a wireless near-field link between two aperture-fed focusing devices. A remarkable agreement between full-wave simulations and numerical results is found in all cases. Thanks to its versatility, simplicity, and a rather low demand of computational resources, the proposed approach may become an essential tool for the effective design of waveguide-fed antennas.

show abstract

A comparative analysis of Bessel and Gaussian beams beyond the paraxial approximation

Cited by 4 publications

References 23 publications

Multiple scattering of Bessel beams propagating in advection fog and radiation fog

Multiple scattering of Bessel beams propagating in advection fog and radiation fog

Recent Advances in Beam Focusing through Resonant Bessel-Beam Launchers for Millimeter-Wave WPT Applications

An efficient and accurate semi-analytical matching technique for waveguide-fed antennas

Contact Info

Product

Resources

About